/* ==============================
   KODASTEK — Design System CSS
   ============================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* ── CSS Custom Properties ── */
:root {
  --clr-bg:         #080c10;
  --clr-bg-2:       #0d1117;
  --clr-bg-3:       #111820;
  --clr-surface:    rgba(255, 255, 255, 0.04);
  --clr-border:     rgba(255, 255, 255, 0.07);
  --clr-border-2:   rgba(255, 255, 255, 0.12);

  --clr-green:      #22c55e;
  --clr-green-dim:  #16a34a;
  --clr-green-glow: rgba(34, 197, 94, 0.18);
  --clr-green-pale: rgba(34, 197, 94, 0.08);

  --clr-blue:       #38bdf8;
  --clr-blue-dim:   #0284c7;
  --clr-blue-glow:  rgba(56, 189, 248, 0.16);
  --clr-blue-pale:  rgba(56, 189, 248, 0.07);

  --clr-teal:       #2dd4bf;

  --clr-text:       #f1f5f9;
  --clr-text-2:     #94a3b8;
  --clr-text-3:     #64748b;

  --radius-sm:  8px;
  --radius-md:  14px;
  --radius-lg:  20px;
  --radius-xl:  28px;

  --shadow-glow-green: 0 0 40px rgba(34, 197, 94, 0.12);
  --shadow-glow-blue:  0 0 40px rgba(56, 189, 248, 0.10);

  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, sans-serif;
  background-color: var(--clr-bg);
  color: var(--clr-text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
ul { list-style: none; }

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--clr-bg-2); }
::-webkit-scrollbar-thumb { background: var(--clr-border-2); border-radius: 3px; }

/* ── Background Mesh / Noise ── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 20% -10%, rgba(34,197,94,0.07) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 80% 110%, rgba(56,189,248,0.06) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
}

/* ── Layout ── */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

section { position: relative; z-index: 1; }

/* ─────────────────────────────
   NAVIGATION
───────────────────────────── */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 0 24px;
  height: 68px;
  display: flex;
  align-items: center;
  transition: background var(--transition), backdrop-filter var(--transition), border-color var(--transition);
}
.navbar.scrolled {
  background: rgba(8, 12, 16, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--clr-border);
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}
.nav-logo-icon {
  width: 34px;
  height: 34px;
  background: linear-gradient(135deg, var(--clr-green), var(--clr-blue));
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}
.nav-logo-text span { color: var(--clr-green); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}
.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--clr-text-2);
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--clr-text); }

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Language Toggle */
.lang-toggle {
  display: flex;
  align-items: center;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: 999px;
  padding: 3px;
  gap: 2px;
}
.lang-btn {
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  cursor: pointer;
  border: none;
  background: transparent;
  color: var(--clr-text-3);
  transition: all var(--transition);
}
.lang-btn.active {
  background: var(--clr-green);
  color: #000;
  box-shadow: 0 0 12px rgba(34,197,94,0.35);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--clr-text);
  border-radius: 2px;
  transition: all var(--transition);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile Menu */
.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  top: 68px;
  background: rgba(8, 12, 16, 0.97);
  backdrop-filter: blur(20px);
  z-index: 99;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 32px;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--clr-text-2);
  transition: color var(--transition);
}
.mobile-menu a:hover { color: var(--clr-green); }

/* ── Buttons ── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  background: var(--clr-green);
  color: #000;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn-primary:hover {
  background: #4ade80;
  box-shadow: 0 0 24px rgba(34,197,94,0.4);
  transform: translateY(-1px);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  background: transparent;
  color: var(--clr-text);
  border: 1px solid var(--clr-border-2);
  transition: all var(--transition);
  white-space: nowrap;
}
.btn-secondary:hover {
  background: var(--clr-surface);
  border-color: rgba(255,255,255,0.2);
  transform: translateY(-1px);
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 0.8125rem;
  font-weight: 600;
  cursor: pointer;
  background: var(--clr-green);
  color: #000;
  border: none;
  transition: all var(--transition);
}
.btn-ghost:hover { background: #4ade80; box-shadow: 0 0 16px rgba(34,197,94,0.35); }

/* ── Badge ── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: 1px solid;
  margin-bottom: 24px;
}
.badge-green {
  background: var(--clr-green-pale);
  border-color: rgba(34,197,94,0.25);
  color: var(--clr-green);
}
.badge-blue {
  background: var(--clr-blue-pale);
  border-color: rgba(56,189,248,0.2);
  color: var(--clr-blue);
}
.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  animation: pulse 2s infinite;
}

/* ─────────────────────────────
   HERO SECTION
───────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 0 80px;
  position: relative;
  overflow: hidden;
}

/* Glowing orbs */
.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
}
.hero-orb-1 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(34,197,94,0.15) 0%, transparent 70%);
  top: -100px; left: -200px;
  animation: float 8s ease-in-out infinite;
}
.hero-orb-2 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(56,189,248,0.12) 0%, transparent 70%);
  bottom: -100px; right: -150px;
  animation: float 10s ease-in-out infinite reverse;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-content { position: relative; z-index: 2; }

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.04em;
  margin-bottom: 20px;
}
.hero-title-highlight {
  background: linear-gradient(135deg, var(--clr-green) 0%, var(--clr-teal) 50%, var(--clr-blue) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: block;
}

.hero-subtitle {
  font-size: 1.125rem;
  color: var(--clr-text-2);
  line-height: 1.7;
  max-width: 480px;
  margin-bottom: 36px;
}

.hero-ctas {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 60px;
}

.hero-stats {
  display: flex;
  gap: 32px;
}
.hero-stat { }
.hero-stat-value {
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--clr-text);
  line-height: 1;
}
.hero-stat-label {
  font-size: 0.8rem;
  color: var(--clr-text-3);
  margin-top: 4px;
  font-weight: 500;
}

/* Hero Visual — IoT Device Card */
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.iot-device-card {
  width: 100%;
  max-width: 440px;
  background: rgba(13, 17, 23, 0.8);
  border: 1px solid var(--clr-border-2);
  border-radius: var(--radius-xl);
  padding: 28px;
  backdrop-filter: blur(16px);
  box-shadow: 0 32px 64px -16px rgba(0,0,0,0.6), var(--shadow-glow-green);
  position: relative;
  overflow: hidden;
  animation: float 6s ease-in-out infinite;
}
.iot-device-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(34,197,94,0.6), transparent);
}

.device-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}
.device-title-group { }
.device-label {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--clr-text-3);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 2px;
}
.device-name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--clr-text);
}
.device-status {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--clr-green-pale);
  border: 1px solid rgba(34,197,94,0.2);
  border-radius: 999px;
  padding: 5px 12px;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--clr-green);
}
.status-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--clr-green);
  animation: pulse 2s infinite;
}

.device-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 12px;
  margin-bottom: 20px;
}
.metric-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 14px 12px;
  text-align: center;
}
.metric-icon { font-size: 1.2rem; margin-bottom: 6px; }
.metric-value {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--clr-text);
  line-height: 1;
  margin-bottom: 3px;
}
.metric-label {
  font-size: 0.65rem;
  color: var(--clr-text-3);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.command-bar {
  background: rgba(34,197,94,0.06);
  border: 1px solid rgba(34,197,94,0.15);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  margin-bottom: 16px;
}
.command-label {
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--clr-green);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 6px;
}
.command-text {
  font-size: 0.85rem;
  color: var(--clr-text);
  font-weight: 500;
  font-family: 'SF Mono', 'Fira Code', monospace;
}

.device-integrations {
  display: flex;
  gap: 8px;
}
.integration-chip {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  padding: 8px;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--clr-text-2);
}

/* Floating mini cards */
.hero-float-card {
  position: absolute;
  background: rgba(13, 17, 23, 0.92);
  border: 1px solid var(--clr-border-2);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  backdrop-filter: blur(12px);
  font-size: 0.78rem;
  font-weight: 600;
  white-space: nowrap;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
}
.hero-float-card-1 {
  top: -20px;
  right: -40px;
  animation: float 5s ease-in-out infinite 1s;
  display: flex;
  align-items: center;
  gap: 8px;
}
.hero-float-card-2 {
  bottom: 20px;
  left: -50px;
  animation: float 7s ease-in-out infinite 2s;
  display: flex;
  align-items: center;
  gap: 8px;
}
.float-icon { font-size: 1rem; }
.float-content { }
.float-title { color: var(--clr-text-3); font-size: 0.65rem; font-weight: 500; margin-bottom: 1px; }
.float-value { color: var(--clr-text); font-weight: 700; }

/* ─────────────────────────────
   SECTION COMMON
───────────────────────────── */
.section {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 64px;
}

.section-title {
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.1;
  margin-bottom: 16px;
}
.section-title-highlight {
  background: linear-gradient(135deg, var(--clr-green), var(--clr-teal));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  font-size: 1.0625rem;
  color: var(--clr-text-2);
  line-height: 1.7;
}

/* ── Divider ── */
.section-divider {
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--clr-border-2), transparent);
  margin: 0;
}

/* ─────────────────────────────
   SOLUTIONS SECTION
───────────────────────────── */
.solutions-section {
  background: var(--clr-bg-2);
}

.solutions-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-bottom: 48px;
}

.solution-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.solution-card::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0;
  background: linear-gradient(135deg, var(--clr-green-pale), transparent);
  transition: opacity var(--transition);
  border-radius: inherit;
}
.solution-card:hover {
  border-color: rgba(34,197,94,0.25);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px -10px rgba(0,0,0,0.4), var(--shadow-glow-green);
}
.solution-card:hover::before { opacity: 1; }

.card-icon {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 18px;
}
.card-icon-green {
  background: var(--clr-green-pale);
  border: 1px solid rgba(34,197,94,0.2);
}
.card-icon-blue {
  background: var(--clr-blue-pale);
  border: 1px solid rgba(56,189,248,0.2);
}

.card-title {
  font-size: 1.0625rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--clr-text);
}
.card-desc {
  font-size: 0.9rem;
  color: var(--clr-text-2);
  line-height: 1.65;
}

/* Command Terminal */
.command-terminal {
  background: rgba(0, 0, 0, 0.5);
  border: 1px solid var(--clr-border-2);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.terminal-header {
  background: var(--clr-bg-3);
  padding: 14px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid var(--clr-border);
}
.terminal-dots {
  display: flex;
  gap: 6px;
}
.terminal-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.dot-red { background: #ff5f57; }
.dot-yellow { background: #ffbd2e; }
.dot-green { background: #28c840; }
.terminal-title {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--clr-text-3);
  font-family: 'SF Mono', 'Fira Code', monospace;
}
.terminal-body {
  padding: 24px 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.terminal-line {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  opacity: 0;
  animation: fadeInUp 0.5s ease forwards;
}
.terminal-line:nth-child(1) { animation-delay: 0.1s; }
.terminal-line:nth-child(2) { animation-delay: 0.5s; }
.terminal-line:nth-child(3) { animation-delay: 0.9s; }
.terminal-prompt {
  color: var(--clr-green);
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: 0.85rem;
  font-weight: 700;
  user-select: none;
  flex-shrink: 0;
}
.terminal-cmd {
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: 0.85rem;
  color: var(--clr-text);
  flex: 1;
}
.terminal-cmd .highlight { color: var(--clr-blue); }
.terminal-cmd .value { color: var(--clr-green); }

/* ─────────────────────────────
   MANAGEMENT SECTION
───────────────────────────── */
.management-section {
  background: var(--clr-bg);
}

.management-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.management-features {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.feature-item {
  display: flex;
  gap: 18px;
  padding: 22px;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  transition: all var(--transition);
  cursor: default;
}
.feature-item:hover {
  border-color: rgba(56,189,248,0.25);
  background: var(--clr-blue-pale);
  transform: translateX(4px);
}
.feature-icon-wrap {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
  background: var(--clr-blue-pale);
  border: 1px solid rgba(56,189,248,0.2);
}
.feature-body { }
.feature-title {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--clr-text);
  margin-bottom: 6px;
}
.feature-desc {
  font-size: 0.85rem;
  color: var(--clr-text-2);
  line-height: 1.65;
}

/* App Preview Panel */
.app-preview {
  background: rgba(13,17,23,0.9);
  border: 1px solid var(--clr-border-2);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 32px 64px -16px rgba(0,0,0,0.7), var(--shadow-glow-blue);
}
.app-topbar {
  background: var(--clr-bg-3);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--clr-border);
}
.app-topbar-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--clr-text);
}
.app-tabs {
  display: flex;
  gap: 4px;
}
.app-tab {
  padding: 5px 12px;
  border-radius: 6px;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--clr-text-3);
  cursor: pointer;
  transition: all var(--transition);
}
.app-tab.active {
  background: var(--clr-blue-pale);
  color: var(--clr-blue);
  border: 1px solid rgba(56,189,248,0.2);
}

.app-body { padding: 20px; }

.role-list { display: flex; flex-direction: column; gap: 10px; margin-bottom: 16px; }
.role-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
}
.role-user {
  display: flex;
  align-items: center;
  gap: 10px;
}
.role-avatar {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  font-weight: 800;
  color: #000;
}
.avatar-green { background: var(--clr-green); }
.avatar-blue  { background: var(--clr-blue); }
.avatar-teal  { background: var(--clr-teal); }

.role-user-name {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--clr-text);
}
.role-badge {
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}
.role-badge-green { background: var(--clr-green-pale); color: var(--clr-green); border: 1px solid rgba(34,197,94,0.2); }
.role-badge-blue  { background: var(--clr-blue-pale);  color: var(--clr-blue);  border: 1px solid rgba(56,189,248,0.2); }
.role-badge-teal  { background: rgba(45,212,191,0.08); color: var(--clr-teal);  border: 1px solid rgba(45,212,191,0.2); }

.task-timeline { display: flex; flex-direction: column; gap: 0; }
.task-day-label {
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--clr-text-3);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 8px 0 6px;
}
.task-item {
  display: flex;
  gap: 12px;
  padding: 10px 0;
  border-top: 1px solid var(--clr-border);
}
.task-dot-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}
.task-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-top: 5px;
  flex-shrink: 0;
}
.task-done { background: var(--clr-green); }
.task-doing { background: var(--clr-blue); box-shadow: 0 0 8px rgba(56,189,248,0.5); }
.task-plan  { background: var(--clr-text-3); }

.task-content { }
.task-title {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--clr-text);
  margin-bottom: 2px;
}
.task-meta {
  font-size: 0.7rem;
  color: var(--clr-text-3);
}

/* ─────────────────────────────
   WHY US SECTION
───────────────────────────── */
.whyus-section {
  background: var(--clr-bg-2);
  position: relative;
  overflow: hidden;
}
.whyus-section::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(34,197,94,0.05) 0%, transparent 65%);
  pointer-events: none;
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.why-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.why-card::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--clr-green), var(--clr-teal));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}
.why-card:hover {
  border-color: rgba(34,197,94,0.2);
  transform: translateY(-5px);
  box-shadow: 0 16px 40px -10px rgba(0,0,0,0.5);
}
.why-card:hover::after { transform: scaleX(1); }

.why-icon {
  font-size: 2rem;
  margin-bottom: 16px;
  display: block;
}
.why-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--clr-text);
  margin-bottom: 10px;
}
.why-desc {
  font-size: 0.875rem;
  color: var(--clr-text-2);
  line-height: 1.65;
}

/* ─────────────────────────────
   FOOTER
───────────────────────────── */
.footer {
  background: var(--clr-bg);
  border-top: 1px solid var(--clr-border);
  padding: 64px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand { }
.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}
.footer-logo span { color: var(--clr-green); }
.footer-tagline {
  font-size: 0.875rem;
  color: var(--clr-text-3);
  line-height: 1.65;
  max-width: 260px;
  margin-bottom: 24px;
}
.footer-socials {
  display: flex;
  gap: 10px;
}
.social-link {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  transition: all var(--transition);
  text-decoration: none;
}
.social-link:hover {
  background: var(--clr-green-pale);
  border-color: rgba(34,197,94,0.3);
  transform: translateY(-2px);
}

.footer-col-title {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--clr-text);
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}
.footer-col-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-col-links a {
  font-size: 0.875rem;
  color: var(--clr-text-3);
  transition: color var(--transition);
}
.footer-col-links a:hover { color: var(--clr-green); }

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid var(--clr-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-copy {
  font-size: 0.8rem;
  color: var(--clr-text-3);
}
.footer-legal {
  display: flex;
  gap: 20px;
}
.footer-legal a {
  font-size: 0.8rem;
  color: var(--clr-text-3);
  transition: color var(--transition);
}
.footer-legal a:hover { color: var(--clr-text); }

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

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.5; transform: scale(0.85); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes shimmer {
  0%   { background-position: -400px 0; }
  100% { background-position: 400px 0; }
}

/* Intersection observer reveal */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: none;
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }
.reveal-delay-6 { transition-delay: 0.6s; }

/* ─────────────────────────────
   RESPONSIVE
───────────────────────────── */
@media (max-width: 1024px) {
  .hero-inner { gap: 40px; }
  .hero-float-card-1 { right: -20px; top: -10px; }
  .hero-float-card-2 { left: -20px; }
  .management-inner { gap: 40px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-actions .btn-ghost { display: none; }
  .hamburger { display: flex; }

  .hero-inner {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .hero-title { font-size: 2.5rem; }
  .hero-visual { order: -1; }
  .hero-float-card { display: none; }
  .iot-device-card { max-width: 100%; }
  .hero-stats { gap: 24px; }

  .solutions-grid { grid-template-columns: 1fr; }
  .management-inner { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr 1fr; }

  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 480px) {
  .why-grid { grid-template-columns: 1fr; }
  .hero-ctas { flex-direction: column; }
  .btn-primary, .btn-secondary { justify-content: center; }
  .hero-stats { flex-wrap: wrap; gap: 20px; }
  .section { padding: 72px 0; }
}