/*
Theme Name:  EnergiX Pro
Theme URI:   https://energixpro.com
Author:      SEI Energy Solutions
Author URI:  https://sei-energy.com
Description: A premium, conversion-driven WordPress theme for industrial energy companies — Solar EPC, Electrical Engineering, IoT Monitoring, and EV Charging. Built for B2B credibility, engineering trust, and energy innovation.
Version:     1.0.0
License:     GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: energix
Tags:        energy, solar, industrial, corporate, business, custom-colors, custom-logo, custom-menu, featured-images, responsive-layout, rtl-language-support, translation-ready
*/

/* ==========================================================================
   TABLE OF CONTENTS
   1. CSS Variables / Design Tokens
   2. Reset & Base
   3. Typography
   4. Layout & Grid
   5. Header & Navigation
   6. Hero Section
   7. Business Units / Services Cards
   8. Stats Counter Section
   9. Case Studies Slider
   10. Client Logos
   11. Energy Calculator
   12. IoT Dashboard Preview
   13. About Page
   14. Services Pages
   15. Projects / Portfolio
   16. Blog / Insights
   17. Contact Page
   18. Footer
   19. Buttons & CTAs
   20. Utility Classes
   21. Animations
   22. Responsive / Mobile-First
   ========================================================================== */

/* ==========================================================================
   1. CSS VARIABLES / DESIGN TOKENS
   ========================================================================== */
:root {
  /* Brand Colors */
  --color-primary:       #0B1F3A;  /* Deep Navy */
  --color-primary-light: #162D54;
  --color-primary-dark:  #060F1D;
  --color-secondary:     #00C853;  /* Energy Green */
  --color-secondary-dark:#00962E;
  --color-accent:        #00B0FF;  /* Electric Blue */
  --color-accent-dark:   #007BB5;
  --color-solar:         #FF6F00;  /* Solar Orange */
  --color-solar-light:   #FFA000;

  /* Neutrals */
  --color-white:         #FFFFFF;
  --color-off-white:     #F8F9FC;
  --color-grey-100:      #F1F3F7;
  --color-grey-200:      #E2E8F0;
  --color-grey-300:      #CBD5E1;
  --color-grey-400:      #94A3B8;
  --color-grey-500:      #64748B;
  --color-grey-600:      #475569;
  --color-grey-700:      #334155;
  --color-grey-800:      #1E293B;
  --color-grey-900:      #0F172A;
  --color-text:          #1E293B;
  --color-text-muted:    #64748B;

  /* Typography */
  --font-heading:  'Inter', 'Segoe UI', -apple-system, sans-serif;
  --font-body:     'Inter', 'Segoe UI', -apple-system, sans-serif;
  --font-mono:     'JetBrains Mono', 'Fira Code', monospace;

  --text-xs:    0.75rem;
  --text-sm:    0.875rem;
  --text-base:  1rem;
  --text-lg:    1.125rem;
  --text-xl:    1.25rem;
  --text-2xl:   1.5rem;
  --text-3xl:   1.875rem;
  --text-4xl:   2.25rem;
  --text-5xl:   3rem;
  --text-6xl:   3.75rem;
  --text-7xl:   4.5rem;

  --font-normal:   400;
  --font-medium:   500;
  --font-semibold: 600;
  --font-bold:     700;
  --font-extrabold:800;

  --leading-tight:  1.2;
  --leading-snug:   1.375;
  --leading-normal: 1.5;
  --leading-relaxed:1.625;

  /* Spacing */
  --space-1:   0.25rem;
  --space-2:   0.5rem;
  --space-3:   0.75rem;
  --space-4:   1rem;
  --space-5:   1.25rem;
  --space-6:   1.5rem;
  --space-8:   2rem;
  --space-10:  2.5rem;
  --space-12:  3rem;
  --space-16:  4rem;
  --space-20:  5rem;
  --space-24:  6rem;
  --space-32:  8rem;

  /* Borders */
  --radius-sm:  0.25rem;
  --radius-md:  0.5rem;
  --radius-lg:  0.75rem;
  --radius-xl:  1rem;
  --radius-2xl: 1.5rem;
  --radius-full:9999px;

  /* Shadows */
  --shadow-sm:   0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md:   0 4px 16px rgba(0,0,0,0.10), 0 2px 6px rgba(0,0,0,0.06);
  --shadow-lg:   0 10px 40px rgba(0,0,0,0.12), 0 4px 16px rgba(0,0,0,0.08);
  --shadow-xl:   0 20px 60px rgba(0,0,0,0.16), 0 8px 24px rgba(0,0,0,0.10);
  --shadow-glow: 0 0 24px rgba(0,176,255,0.25);
  --shadow-green:0 0 24px rgba(0,200,83,0.25);

  /* Transitions */
  --transition-fast:   150ms cubic-bezier(0.4,0,0.2,1);
  --transition-base:   250ms cubic-bezier(0.4,0,0.2,1);
  --transition-slow:   400ms cubic-bezier(0.4,0,0.2,1);

  /* Layout */
  --container-max:   1280px;
  --container-wide:  1440px;
  --container-narrow: 900px;
  --header-height:   80px;

  /* Z-index scale */
  --z-below:  -1;
  --z-base:    0;
  --z-raised:  10;
  --z-overlay: 100;
  --z-sticky:  200;
  --z-modal:   300;
  --z-top:     400;
}

/* ==========================================================================
   2. RESET & BASE
   ========================================================================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  color: var(--color-text);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img, video, svg { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--color-accent); }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, textarea, select { font-family: inherit; font-size: inherit; }

/* WordPress generated classes */
.alignleft  { float: left; margin: 0 var(--space-6) var(--space-4) 0; }
.alignright { float: right; margin: 0 0 var(--space-4) var(--space-6); }
.aligncenter { display: block; margin: 0 auto var(--space-6); }
.wp-caption { max-width: 100%; }
.screen-reader-text { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }

/* ==========================================================================
   3. TYPOGRAPHY
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: var(--font-bold);
  line-height: var(--leading-tight);
  color: var(--color-primary);
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(var(--text-4xl), 5vw, var(--text-6xl)); font-weight: var(--font-extrabold); }
h2 { font-size: clamp(var(--text-3xl), 4vw, var(--text-5xl)); }
h3 { font-size: clamp(var(--text-2xl), 3vw, var(--text-4xl)); }
h4 { font-size: var(--text-2xl); }
h5 { font-size: var(--text-xl); }
h6 { font-size: var(--text-lg); }

p {
  line-height: var(--leading-relaxed);
  color: var(--color-text-muted);
  max-width: 65ch;
}

.lead {
  font-size: var(--text-xl);
  line-height: var(--leading-relaxed);
  color: var(--color-grey-600);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-4);
}

.eyebrow::before {
  content: '';
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-accent);
  border-radius: var(--radius-full);
}

.eyebrow--green { color: var(--color-secondary); }
.eyebrow--green::before { background: var(--color-secondary); }

.eyebrow--orange { color: var(--color-solar); }
.eyebrow--orange::before { background: var(--color-solar); }

/* ==========================================================================
   4. LAYOUT & GRID
   ========================================================================== */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.container--wide { max-width: var(--container-wide); }
.container--narrow { max-width: var(--container-narrow); }

.section {
  padding: var(--space-24) 0;
}

.section--sm { padding: var(--space-16) 0; }
.section--lg { padding: var(--space-32) 0; }
.section--dark { background: var(--color-primary); }
.section--grey { background: var(--color-off-white); }
.section--gradient {
  background: linear-gradient(135deg, var(--color-primary) 0%, #0D2845 60%, #0B3060 100%);
}

.grid {
  display: grid;
  gap: var(--space-8);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-auto { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--space-16);
}

.section-header h2 { margin-bottom: var(--space-4); }
.section-header p { margin: 0 auto; font-size: var(--text-lg); }

/* ==========================================================================
   5. HEADER & NAVIGATION
   ========================================================================== */
#site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  height: var(--header-height);
  transition: all var(--transition-base);
}

#site-header.header--transparent {
  background: transparent;
}

#site-header.header--scrolled {
  background: rgba(11, 31, 58, 0.97);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 rgba(255,255,255,0.08), var(--shadow-lg);
  height: 70px;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

/* Logo */
.site-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

.site-logo img {
  height: 44px;
  width: auto;
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.logo-brand {
  font-size: var(--text-xl);
  font-weight: var(--font-extrabold);
  color: var(--color-white);
  letter-spacing: -0.03em;
}

.logo-brand span { color: var(--color-accent); }

.logo-tagline {
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  color: rgba(255,255,255,0.55);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-top: 2px;
}

/* Primary Navigation */
.primary-nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.primary-nav > li { position: relative; }

.primary-nav > li > a {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: rgba(255,255,255,0.85);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.primary-nav > li > a:hover,
.primary-nav > li.current-menu-item > a,
.primary-nav > li.current-menu-parent > a {
  color: var(--color-white);
  background: rgba(255,255,255,0.10);
}

/* Dropdown */
.primary-nav .sub-menu {
  position: absolute;
  top: calc(100% + var(--space-2));
  left: 0;
  min-width: 220px;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--color-grey-200);
  padding: var(--space-2) 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all var(--transition-base);
  z-index: var(--z-overlay);
}

.primary-nav > li:hover .sub-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.primary-nav .sub-menu li a {
  display: block;
  padding: var(--space-3) var(--space-5);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-grey-700);
  transition: all var(--transition-fast);
}

.primary-nav .sub-menu li a:hover {
  color: var(--color-primary);
  background: var(--color-grey-100);
  padding-left: calc(var(--space-5) + 4px);
}

/* Header Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.header-lang {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: rgba(255,255,255,0.65);
  cursor: pointer;
  padding: var(--space-1) var(--space-2);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.header-lang:hover {
  color: var(--color-white);
  border-color: rgba(255,255,255,0.4);
}

/* Mobile menu toggle */
.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 32px;
  height: 32px;
  align-items: center;
  justify-content: center;
  padding: var(--space-1);
}

.mobile-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-white);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
}

/* Mobile Nav */
.mobile-nav {
  display: none;
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(360px, 100vw);
  background: var(--color-primary);
  z-index: var(--z-modal);
  padding: var(--space-8);
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform var(--transition-slow);
  box-shadow: -8px 0 40px rgba(0,0,0,0.3);
}

.mobile-nav.is-open { transform: translateX(0); }

.mobile-nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: calc(var(--z-modal) - 1);
  backdrop-filter: blur(4px);
}

.mobile-nav-overlay.is-active { display: block; }

/* ==========================================================================
   6. HERO SECTION
   ========================================================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: var(--header-height);
  background: var(--color-primary);
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__bg img,
.hero__bg video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(11,31,58,0.92) 0%,
    rgba(11,31,58,0.75) 50%,
    rgba(11,31,58,0.50) 100%
  );
  z-index: 1;
}

.hero__grid-pattern {
  position: absolute;
  inset: 0;
  z-index: 2;
  background-image:
    linear-gradient(rgba(0,176,255,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,176,255,0.05) 1px, transparent 1px);
  background-size: 60px 60px;
}

.hero__content {
  position: relative;
  z-index: 3;
  max-width: 820px;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: rgba(0,176,255,0.15);
  border: 1px solid rgba(0,176,255,0.3);
  border-radius: var(--radius-full);
  padding: var(--space-2) var(--space-5);
  margin-bottom: var(--space-6);
}

.hero__badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-secondary);
  animation: pulse-dot 2s ease-in-out infinite;
}

.hero__badge-text {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: rgba(255,255,255,0.9);
  letter-spacing: 0.05em;
}

.hero__headline {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: var(--font-extrabold);
  color: var(--color-white);
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-6);
}

.hero__headline .highlight {
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subheadline {
  font-size: clamp(var(--text-lg), 2vw, var(--text-xl));
  color: rgba(255,255,255,0.72);
  line-height: var(--leading-relaxed);
  max-width: 600px;
  margin-bottom: var(--space-10);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-bottom: var(--space-16);
}

.hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-8);
  padding-top: var(--space-8);
  border-top: 1px solid rgba(255,255,255,0.12);
}

.hero__stat-number {
  display: block;
  font-size: var(--text-3xl);
  font-weight: var(--font-extrabold);
  color: var(--color-white);
  line-height: 1;
  margin-bottom: var(--space-1);
}

.hero__stat-number .unit {
  font-size: var(--text-xl);
  color: var(--color-accent);
}

.hero__stat-label {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.55);
  font-weight: var(--font-medium);
  letter-spacing: 0.03em;
}

/* Hero Scroll Indicator */
.hero__scroll {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
}

.hero__scroll-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.4), transparent);
  animation: scroll-line 2s ease-in-out infinite;
}

.hero__scroll-text {
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.4);
}

/* ==========================================================================
   7. BUSINESS UNITS / SERVICE CARDS
   ========================================================================== */
.business-units { background: var(--color-off-white); }

.bu-card {
  position: relative;
  background: var(--color-white);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  border: 1px solid var(--color-grey-200);
  transition: all var(--transition-base);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.bu-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--card-color, var(--color-accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.bu-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: transparent;
}

.bu-card:hover::before { transform: scaleX(1); }

.bu-card--solar    { --card-color: var(--color-solar); }
.bu-card--elec     { --card-color: var(--color-accent); }
.bu-card--iot      { --card-color: var(--color-secondary); }
.bu-card--ev       { --card-color: #7C3AED; }

.bu-card__icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--icon-bg, rgba(0,176,255,0.1));
  flex-shrink: 0;
}

.bu-card--solar .bu-card__icon    { background: rgba(255,111,0,0.1); }
.bu-card--elec  .bu-card__icon    { background: rgba(0,176,255,0.1); }
.bu-card--iot   .bu-card__icon    { background: rgba(0,200,83,0.1); }
.bu-card--ev    .bu-card__icon    { background: rgba(124,58,237,0.1); }

.bu-card__icon svg,
.bu-card__icon i {
  width: 32px;
  height: 32px;
  font-size: 32px;
  color: var(--card-color, var(--color-accent));
}

.bu-card__title {
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: var(--color-primary);
  margin: 0;
}

.bu-card__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
  flex: 1;
  max-width: none;
}

.bu-card__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-top: var(--space-2);
}

.bu-card__list-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-grey-600);
}

.bu-card__list-item::before {
  content: '';
  display: block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--card-color, var(--color-accent));
  flex-shrink: 0;
}

.bu-card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--card-color, var(--color-accent));
  margin-top: auto;
  transition: gap var(--transition-fast);
}

.bu-card__link:hover { gap: var(--space-3); color: var(--card-color, var(--color-accent)); }

/* ==========================================================================
   8. STATS COUNTER SECTION
   ========================================================================== */
.stats-section {
  background: linear-gradient(135deg, var(--color-primary) 0%, #0D2845 100%);
  position: relative;
  overflow: hidden;
}

.stats-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,176,255,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-1);
}

.stat-item {
  text-align: center;
  padding: var(--space-12) var(--space-8);
  position: relative;
}

.stat-item:not(:last-child)::after {
  content: '';
  position: absolute;
  top: 20%;
  right: 0;
  width: 1px;
  height: 60%;
  background: rgba(255,255,255,0.10);
}

.stat-number {
  font-size: clamp(var(--text-4xl), 4vw, var(--text-6xl));
  font-weight: var(--font-extrabold);
  color: var(--color-white);
  line-height: 1;
  letter-spacing: -0.03em;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: var(--space-1);
}

.stat-number .stat-unit {
  font-size: var(--text-2xl);
  color: var(--color-accent);
  font-weight: var(--font-bold);
  margin-bottom: 4px;
}

.stat-number .stat-plus {
  font-size: var(--text-3xl);
  color: var(--color-secondary);
  margin-bottom: 2px;
}

.stat-label {
  margin-top: var(--space-3);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: rgba(255,255,255,0.55);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  max-width: none;
}

.stat-sublabel {
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.35);
  margin-top: var(--space-1);
  max-width: none;
}

/* ==========================================================================
   9. CASE STUDIES SLIDER
   ========================================================================== */
.case-studies-section { background: var(--color-white); }

.cs-slider-container { position: relative; overflow: hidden; }

.cs-slider {
  display: flex;
  gap: var(--space-6);
  transition: transform var(--transition-slow);
}

.cs-card {
  flex: 0 0 calc(33.333% - var(--space-4));
  min-width: 0;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--color-white);
  border: 1px solid var(--color-grey-200);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

.cs-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.cs-card__image {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
}

.cs-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.cs-card:hover .cs-card__image img { transform: scale(1.05); }

.cs-card__category {
  position: absolute;
  top: var(--space-4);
  left: var(--space-4);
  background: var(--color-primary);
  color: var(--color-white);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.cs-card__category--solar    { background: var(--color-solar); }
.cs-card__category--elec     { background: var(--color-accent); }
.cs-card__category--iot      { background: var(--color-secondary); color: var(--color-primary); }
.cs-card__category--ev       { background: #7C3AED; }

.cs-card__body {
  padding: var(--space-6);
}

.cs-card__metrics {
  display: flex;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-grey-100);
}

.cs-metric {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.cs-metric-value {
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
  color: var(--color-primary);
  line-height: 1;
}

.cs-metric-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  max-width: none;
}

.cs-card__title {
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
  color: var(--color-primary);
  margin-bottom: var(--space-2);
  line-height: var(--leading-snug);
}

.cs-card__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
  max-width: none;
}

/* Slider Controls */
.slider-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  margin-top: var(--space-10);
}

.slider-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-white);
  border: 2px solid var(--color-grey-200);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  color: var(--color-primary);
  cursor: pointer;
}

.slider-btn:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
  box-shadow: var(--shadow-md);
}

.slider-dots {
  display: flex;
  gap: var(--space-2);
}

.slider-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-grey-300);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.slider-dot.is-active {
  background: var(--color-accent);
  width: 24px;
  border-radius: var(--radius-full);
}

/* ==========================================================================
   10. CLIENT LOGOS
   ========================================================================== */
.clients-section { background: var(--color-grey-100); }

.clients-marquee {
  overflow: hidden;
  position: relative;
}

.clients-marquee::before,
.clients-marquee::after {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  width: 120px;
  z-index: 2;
  pointer-events: none;
}

.clients-marquee::before {
  left: 0;
  background: linear-gradient(to right, var(--color-grey-100), transparent);
}

.clients-marquee::after {
  right: 0;
  background: linear-gradient(to left, var(--color-grey-100), transparent);
}

.clients-track {
  display: flex;
  gap: var(--space-16);
  animation: marquee 30s linear infinite;
  width: max-content;
}

.clients-track:hover { animation-play-state: paused; }

.client-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 56px;
  flex-shrink: 0;
}

.client-logo img {
  max-height: 40px;
  width: auto;
  filter: grayscale(1) opacity(0.45);
  transition: filter var(--transition-base);
}

.client-logo img:hover { filter: grayscale(0) opacity(1); }

/* ==========================================================================
   11. ENERGY CALCULATOR
   ========================================================================== */
.calculator-section {
  background: var(--color-primary);
  position: relative;
  overflow: hidden;
}

.calculator-section::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(to right, transparent, rgba(0,176,255,0.4), transparent);
}

.calculator-wrapper {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-2xl);
  padding: var(--space-10);
  backdrop-filter: blur(10px);
}

.calc-header {
  text-align: center;
  margin-bottom: var(--space-10);
}

.calc-header h2 { color: var(--color-white); }
.calc-header p { color: rgba(255,255,255,0.6); margin: var(--space-3) auto 0; }

.calc-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
  align-items: start;
}

.calc-inputs { display: flex; flex-direction: column; gap: var(--space-6); }

.calc-field { display: flex; flex-direction: column; gap: var(--space-2); }

.calc-label {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: rgba(255,255,255,0.75);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.calc-label .calc-value-display {
  font-weight: var(--font-bold);
  color: var(--color-accent);
}

.calc-range {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  border-radius: var(--radius-full);
  background: rgba(255,255,255,0.15);
  outline: none;
  cursor: pointer;
}

.calc-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--color-accent);
  cursor: pointer;
  box-shadow: 0 0 0 4px rgba(0,176,255,0.2);
  transition: box-shadow var(--transition-fast);
}

.calc-range::-webkit-slider-thumb:hover {
  box-shadow: 0 0 0 6px rgba(0,176,255,0.3);
}

.calc-select {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  color: var(--color-white);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  cursor: pointer;
  transition: border-color var(--transition-fast);
}

.calc-select:focus { outline: none; border-color: var(--color-accent); }
.calc-select option { background: var(--color-primary); }

.calc-results {
  background: rgba(0,176,255,0.05);
  border: 1px solid rgba(0,176,255,0.2);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.calc-result-title {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.calc-result-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: var(--space-4);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.calc-result-item:last-of-type { border-bottom: none; }

.calc-result-label {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.6);
  max-width: none;
}

.calc-result-value {
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: var(--color-white);
}

.calc-result-value.highlight { color: var(--color-secondary); font-size: var(--text-2xl); }

.calc-disclaimer {
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.35);
  text-align: center;
  max-width: none;
}

/* ==========================================================================
   12. IOT DASHBOARD PREVIEW
   ========================================================================== */
.iot-section { background: var(--color-off-white); }

.dashboard-preview {
  background: var(--color-primary);
  border-radius: var(--radius-2xl);
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow: var(--shadow-xl);
}

.dashboard-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-6);
  background: rgba(255,255,255,0.04);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.dashboard-topbar-title {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: rgba(255,255,255,0.8);
}

.dashboard-live {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-secondary);
  font-weight: var(--font-semibold);
}

.live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-secondary);
  animation: pulse-dot 2s ease-in-out infinite;
}

.dashboard-body {
  padding: var(--space-6);
  display: grid;
  grid-template-columns: repeat(3, 1fr) 2fr;
  gap: var(--space-4);
}

.dash-metric-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
}

.dash-metric-label {
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.45);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-2);
  max-width: none;
}

.dash-metric-value {
  font-size: var(--text-2xl);
  font-weight: var(--font-extrabold);
  color: var(--color-white);
  line-height: 1;
}

.dash-metric-value .unit {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: rgba(255,255,255,0.5);
}

.dash-metric-delta {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  margin-top: var(--space-2);
}

.dash-metric-delta.up { color: var(--color-secondary); }
.dash-metric-delta.down { color: #F87171; }

.dash-chart-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
}

.dash-chart-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-4);
}

.dash-chart-title {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: rgba(255,255,255,0.8);
  max-width: none;
}

/* SVG Chart Bars */
.chart-bars {
  display: flex;
  align-items: flex-end;
  gap: var(--space-2);
  height: 80px;
}

.chart-bar {
  flex: 1;
  background: linear-gradient(to top, var(--color-accent), rgba(0,176,255,0.4));
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  position: relative;
  min-height: 4px;
  transition: opacity var(--transition-fast);
}

.chart-bar:hover { opacity: 0.8; }

/* ==========================================================================
   13. ABOUT PAGE
   ========================================================================== */
.about-hero {
  background: linear-gradient(135deg, var(--color-primary), #0D2845);
  padding: calc(var(--header-height) + var(--space-24)) 0 var(--space-24);
}

.vision-mission-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2);
}

.vision-box, .mission-box {
  padding: var(--space-12);
  border-radius: var(--radius-xl);
}

.vision-box {
  background: var(--color-primary);
  color: var(--color-white);
}

.mission-box {
  background: var(--color-off-white);
}

.timeline {
  position: relative;
  padding: var(--space-8) 0;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-accent), var(--color-secondary));
  transform: translateX(-50%);
}

.timeline-item {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: var(--space-6);
  margin-bottom: var(--space-10);
  align-items: center;
}

.timeline-item:nth-child(even) .timeline-content { grid-column: 3; }
.timeline-item:nth-child(even) .timeline-spacer { grid-column: 1; grid-row: 1; }

.timeline-year {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
  border: 3px solid var(--color-accent);
  flex-shrink: 0;
  position: relative;
  z-index: 1;
}

.timeline-content {
  background: var(--color-white);
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-grey-200);
}

/* Certifications */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-4);
}

.cert-badge {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  background: var(--color-white);
  border: 1px solid var(--color-grey-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.cert-badge i {
  font-size: var(--text-2xl);
  color: var(--color-accent);
  flex-shrink: 0;
}

.cert-name {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-primary);
  max-width: none;
}

/* ==========================================================================
   14. SERVICES PAGES
   ========================================================================== */
.service-hero {
  background: linear-gradient(135deg, var(--color-primary), #0D2845);
  padding: calc(var(--header-height) + var(--space-24)) 0 var(--space-24);
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  position: relative;
  gap: 0;
}

.process-steps::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 12.5%;
  right: 12.5%;
  height: 2px;
  background: linear-gradient(to right, var(--color-accent), var(--color-secondary));
  z-index: 0;
}

.process-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 0 var(--space-4);
  position: relative;
  z-index: 1;
}

.process-step__number {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--color-white);
  border: 3px solid var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xl);
  font-weight: var(--font-extrabold);
  color: var(--color-primary);
  margin-bottom: var(--space-6);
  position: relative;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
}

.process-step:hover .process-step__number {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-secondary);
  transform: scale(1.1);
}

.process-step__title {
  font-size: var(--text-base);
  font-weight: var(--font-bold);
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

.process-step__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
}

/* ROI Highlights */
.roi-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.roi-card {
  background: var(--color-off-white);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  text-align: center;
  border: 1px solid var(--color-grey-200);
  transition: all var(--transition-base);
}

.roi-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  background: var(--color-white);
}

.roi-value {
  font-size: var(--text-5xl);
  font-weight: var(--font-extrabold);
  background: linear-gradient(135deg, var(--color-accent), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: var(--space-2);
}

/* ==========================================================================
   15. PROJECTS / PORTFOLIO
   ========================================================================== */
.portfolio-filter {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: var(--space-12);
}

.filter-btn {
  padding: var(--space-2) var(--space-5);
  border: 2px solid var(--color-grey-300);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-grey-600);
  background: var(--color-white);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.is-active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
  box-shadow: var(--shadow-sm);
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.project-card {
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--color-white);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-grey-200);
  transition: all var(--transition-base);
}

.project-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
}

.project-card__image {
  position: relative;
  aspect-ratio: 4/3;
  overflow: hidden;
}

.project-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.project-card:hover .project-card__image img { transform: scale(1.08); }

.project-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(11,31,58,0.85), transparent 60%);
  opacity: 0;
  transition: opacity var(--transition-base);
  display: flex;
  align-items: flex-end;
  padding: var(--space-6);
}

.project-card:hover .project-card__overlay { opacity: 1; }

.project-card__overlay-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-white);
  font-weight: var(--font-semibold);
  font-size: var(--text-sm);
  border-bottom: 1px solid rgba(255,255,255,0.4);
  padding-bottom: 2px;
}

.project-card__body { padding: var(--space-5); }

.project-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

.project-tag {
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  padding: 3px var(--space-3);
  border-radius: var(--radius-full);
  background: var(--color-grey-100);
  color: var(--color-grey-600);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.project-card__specs {
  display: flex;
  gap: var(--space-4);
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-grey-100);
}

.project-spec { display: flex; flex-direction: column; gap: 2px; }

.project-spec-value {
  font-size: var(--text-base);
  font-weight: var(--font-bold);
  color: var(--color-primary);
  line-height: 1;
}

.project-spec-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  max-width: none;
}

/* ==========================================================================
   16. BLOG / INSIGHTS
   ========================================================================== */
.blog-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-6);
}

.blog-card {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--color-grey-200);
  transition: all var(--transition-base);
}

.blog-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.blog-card--featured { grid-row: span 2; }

.blog-card__image {
  aspect-ratio: 16/9;
  overflow: hidden;
}

.blog-card--featured .blog-card__image { aspect-ratio: 4/3; }

.blog-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.blog-card:hover .blog-card__image img { transform: scale(1.04); }

.blog-card__body { padding: var(--space-5); }

.blog-card__category {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-2);
}

.blog-card__title {
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
  color: var(--color-primary);
  line-height: var(--leading-snug);
  margin-bottom: var(--space-2);
  transition: color var(--transition-fast);
}

.blog-card--featured .blog-card__title { font-size: var(--text-2xl); }
.blog-card:hover .blog-card__title { color: var(--color-accent); }

.blog-card__meta {
  display: flex;
  gap: var(--space-4);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-4);
}

/* ==========================================================================
   17. CONTACT PAGE
   ========================================================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--space-12);
  align-items: start;
}

.contact-info { display: flex; flex-direction: column; gap: var(--space-6); }

.contact-info-item {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}

.contact-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  background: rgba(0,176,255,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-icon i { font-size: var(--text-xl); color: var(--color-accent); }

.contact-form-card {
  background: var(--color-white);
  border-radius: var(--radius-2xl);
  padding: var(--space-10);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--color-grey-200);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.form-label {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-grey-700);
}

.form-input,
.form-select,
.form-textarea {
  padding: var(--space-3) var(--space-4);
  border: 2px solid var(--color-grey-200);
  border-radius: var(--radius-md);
  font-size: var(--text-base);
  color: var(--color-text);
  background: var(--color-white);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  width: 100%;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(0,176,255,0.12);
}

.form-textarea { resize: vertical; min-height: 120px; }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

/* WhatsApp Button */
.whatsapp-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  background: #25D366;
  color: var(--color-white);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  font-weight: var(--font-semibold);
  font-size: var(--text-sm);
  text-decoration: none;
  box-shadow: 0 4px 16px rgba(37,211,102,0.35);
  transition: all var(--transition-fast);
}

.whatsapp-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(37,211,102,0.45);
  color: var(--color-white);
}

/* Sticky CTA */
.sticky-cta {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: var(--z-sticky);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  align-items: flex-end;
}

.sticky-cta-btn {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: var(--font-bold);
  color: var(--color-white);
  text-decoration: none;
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-base);
  white-space: nowrap;
}

.sticky-cta-main {
  background: linear-gradient(135deg, var(--color-accent), var(--color-secondary));
  box-shadow: var(--shadow-glow);
}

.sticky-cta-main:hover {
  transform: translateX(-4px) scale(1.02);
  box-shadow: 0 0 32px rgba(0,176,255,0.4);
  color: var(--color-white);
}

.sticky-cta-wa {
  background: #25D366;
  box-shadow: 0 4px 16px rgba(37,211,102,0.35);
}

.sticky-cta-wa:hover {
  transform: translateX(-4px) scale(1.02);
  color: var(--color-white);
}

/* ==========================================================================
   18. FOOTER
   ========================================================================== */
#site-footer {
  background: var(--color-primary-dark);
  color: rgba(255,255,255,0.65);
  padding-top: var(--space-20);
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-12);
  padding-bottom: var(--space-16);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-brand { display: flex; flex-direction: column; gap: var(--space-5); }

.footer-logo-text {
  font-size: var(--text-2xl);
  font-weight: var(--font-extrabold);
  color: var(--color-white);
  letter-spacing: -0.02em;
}

.footer-logo-text span { color: var(--color-accent); }

.footer-description { font-size: var(--text-sm); line-height: var(--leading-relaxed); }

.footer-social {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.footer-social-link {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-lg);
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.10);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.6);
  font-size: var(--text-sm);
  transition: all var(--transition-fast);
}

.footer-social-link:hover {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-white);
  transform: translateY(-2px);
}

.footer-col h4 {
  font-size: var(--text-sm);
  font-weight: var(--font-bold);
  color: var(--color-white);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: var(--space-5);
}

.footer-links { display: flex; flex-direction: column; gap: var(--space-3); }

.footer-link {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.55);
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.footer-link:hover {
  color: var(--color-accent);
  gap: var(--space-3);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-6) 0;
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.35);
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer-bottom-links {
  display: flex;
  gap: var(--space-6);
}

.footer-bottom-links a {
  color: rgba(255,255,255,0.35);
  transition: color var(--transition-fast);
}

.footer-bottom-links a:hover { color: var(--color-accent); }

/* ==========================================================================
   19. BUTTONS & CTAs
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  line-height: 1;
  text-decoration: none;
  transition: all var(--transition-fast);
  cursor: pointer;
  border: 2px solid transparent;
  white-space: nowrap;
}

.btn--lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
  border-radius: var(--radius-lg);
}

.btn--sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
}

/* Primary */
.btn--primary {
  background: linear-gradient(135deg, var(--color-accent) 0%, #0099DD 100%);
  color: var(--color-white);
  box-shadow: 0 4px 16px rgba(0,176,255,0.30);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(0,176,255,0.40);
  color: var(--color-white);
}

/* Secondary */
.btn--secondary {
  background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-secondary-dark) 100%);
  color: var(--color-white);
  box-shadow: 0 4px 16px rgba(0,200,83,0.25);
}

.btn--secondary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(0,200,83,0.35);
  color: var(--color-white);
}

/* Solar/Orange */
.btn--solar {
  background: linear-gradient(135deg, var(--color-solar) 0%, var(--color-solar-light) 100%);
  color: var(--color-white);
  box-shadow: 0 4px 16px rgba(255,111,0,0.25);
}

.btn--solar:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(255,111,0,0.35);
  color: var(--color-white);
}

/* Outline variants */
.btn--outline {
  background: transparent;
  border-color: rgba(255,255,255,0.35);
  color: var(--color-white);
}

.btn--outline:hover {
  background: rgba(255,255,255,0.10);
  border-color: rgba(255,255,255,0.6);
  color: var(--color-white);
}

.btn--outline-dark {
  background: transparent;
  border-color: var(--color-grey-300);
  color: var(--color-grey-700);
}

.btn--outline-dark:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
}

/* Ghost */
.btn--ghost {
  background: transparent;
  color: var(--color-accent);
  border-color: transparent;
}

.btn--ghost:hover {
  background: rgba(0,176,255,0.08);
  color: var(--color-accent);
}

/* Full width */
.btn--full { width: 100%; justify-content: center; }

/* Pill */
.btn--pill { border-radius: var(--radius-full); }

/* ==========================================================================
   20. UTILITY CLASSES
   ========================================================================== */
.text-center   { text-align: center; }
.text-left     { text-align: left; }
.text-right    { text-align: right; }
.text-white    { color: var(--color-white) !important; }
.text-accent   { color: var(--color-accent) !important; }
.text-green    { color: var(--color-secondary) !important; }
.text-muted    { color: var(--color-text-muted) !important; }
.text-primary  { color: var(--color-primary) !important; }

.bg-primary    { background-color: var(--color-primary); }
.bg-white      { background-color: var(--color-white); }
.bg-off-white  { background-color: var(--color-off-white); }

.mt-0  { margin-top: 0; }
.mt-4  { margin-top: var(--space-4); }
.mt-8  { margin-top: var(--space-8); }
.mt-12 { margin-top: var(--space-12); }
.mb-0  { margin-bottom: 0; }
.mb-4  { margin-bottom: var(--space-4); }
.mb-8  { margin-bottom: var(--space-8); }
.mb-12 { margin-bottom: var(--space-12); }

.hidden { display: none; }
.visible { display: block; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }

/* Divider */
.divider {
  border: none;
  height: 1px;
  background: var(--color-grey-200);
  margin: var(--space-12) 0;
}

/* Badge */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.badge--blue    { background: rgba(0,176,255,0.12); color: var(--color-accent); }
.badge--green   { background: rgba(0,200,83,0.12); color: var(--color-secondary-dark); }
.badge--orange  { background: rgba(255,111,0,0.12); color: var(--color-solar); }
.badge--purple  { background: rgba(124,58,237,0.12); color: #7C3AED; }

/* Page Hero (inner pages) */
.page-hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, #0D2845 100%);
  padding: calc(var(--header-height) + var(--space-16)) 0 var(--space-16);
  position: relative;
  overflow: hidden;
}

.page-hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(to right, transparent, rgba(0,176,255,0.4), transparent);
}

.page-hero h1 { color: var(--color-white); }
.page-hero .lead { color: rgba(255,255,255,0.7); }

/* Breadcrumb */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.5);
  margin-bottom: var(--space-4);
}

.breadcrumb a { color: rgba(255,255,255,0.5); transition: color var(--transition-fast); }
.breadcrumb a:hover { color: var(--color-accent); }
.breadcrumb-sep { color: rgba(255,255,255,0.3); }

/* ==========================================================================
   21. ANIMATIONS
   ========================================================================== */
@keyframes pulse-dot {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.3); opacity: 0.7; }
}

@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

@keyframes scroll-line {
  0%, 100% { transform: scaleY(1); opacity: 1; }
  50% { transform: scaleY(0.5); opacity: 0.5; }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInLeft {
  from { opacity: 0; transform: translateX(-30px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes fadeInRight {
  from { opacity: 0; transform: translateX(30px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes counterUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

/* Animate on scroll helpers */
.aos-init { opacity: 0; transform: translateY(20px); }
.aos-animate { opacity: 1; transform: translateY(0); transition: opacity 0.6s ease, transform 0.6s ease; }
.aos-init.delay-100 { transition-delay: 0.1s; }
.aos-init.delay-200 { transition-delay: 0.2s; }
.aos-init.delay-300 { transition-delay: 0.3s; }
.aos-init.delay-400 { transition-delay: 0.4s; }

/* ==========================================================================
   22. RESPONSIVE / MOBILE-FIRST
   ========================================================================== */

/* Large screens */
@media (min-width: 1536px) {
  :root { --container-max: 1440px; }
}

/* Tablet */
@media (max-width: 1024px) {
  .footer-top { grid-template-columns: 1fr 1fr; gap: var(--space-10); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-item:nth-child(2)::after { display: none; }
  .process-steps { grid-template-columns: repeat(2, 1fr); }
  .process-steps::before { display: none; }
  .blog-grid { grid-template-columns: 1fr 1fr; }
  .blog-card--featured { grid-column: span 2; }
  .dashboard-body { grid-template-columns: 1fr 1fr; }
  .calc-grid { grid-template-columns: 1fr; }
}

/* Mobile */
@media (max-width: 768px) {
  :root {
    --header-height: 64px;
    --space-24: 4rem;
    --space-32: 5rem;
  }

  .primary-nav { display: none; }
  .mobile-toggle { display: flex; }
  .mobile-nav { display: block; }
  .header-actions .btn { display: none; }
  .header-lang { display: none; }

  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .grid-2.grid-tablet-2 { grid-template-columns: repeat(2, 1fr); }

  .hero__headline { font-size: clamp(2rem, 8vw, 3rem); }
  .hero__stats { gap: var(--space-6); }

  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-item::after { display: none; }

  .process-steps { grid-template-columns: 1fr; }
  .vision-mission-grid { grid-template-columns: 1fr; }
  .timeline::before { left: 24px; }
  .timeline-item { grid-template-columns: auto 1fr; }
  .timeline-item:nth-child(even) .timeline-content { grid-column: 2; }
  .timeline-item:nth-child(even) .timeline-spacer { display: none; }

  .contact-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }

  .footer-top { grid-template-columns: 1fr; gap: var(--space-8); }
  .footer-bottom { flex-direction: column; text-align: center; }

  .cs-card { flex: 0 0 85%; }
  .project-grid { grid-template-columns: 1fr; }
  .blog-grid { grid-template-columns: 1fr; }
  .blog-card--featured { grid-column: span 1; }
  .roi-grid { grid-template-columns: 1fr; }
  .dashboard-body { grid-template-columns: 1fr; }

  .sticky-cta-btn span { display: none; }
  .sticky-cta-btn { width: 52px; height: 52px; padding: 0; justify-content: center; border-radius: 50%; }
}

@media (max-width: 480px) {
  .hero__actions { flex-direction: column; }
  .hero__actions .btn { width: 100%; justify-content: center; }
  .portfolio-filter { gap: var(--space-2); }
  .filter-btn { padding: var(--space-2) var(--space-3); font-size: var(--text-xs); }
}