/* ==================== CSS VARIABLES (THEME CONFIGURATION) ==================== */
:root {
  /* Dark Mode Colors */
  --bg-primary: #000000;
  --bg-secondary: #0a1929;
  --text-primary: #ffffff;
  --text-secondary: #b0bec5;
  --accent-color: #1e88e5;
  --border-color: rgba(255, 255, 255, 0.1);
  --card-bg: rgba(10, 25, 41, 0.5);
  --input-bg: rgba(255, 255, 255, 0.03);

  /* Animations */
  --transition-smooth: cubic-bezier(0.4, 0, 0.2, 1);

  /* Spacing */
  --section-spacing: 120px;
  --section-spacing-mobile: 80px;
}

/* Light Mode Theme */
[data-theme="light"] {
  --bg-primary: #ffffff;
  --bg-secondary: #f5f7fa;
  --text-primary: #1a1a1a;
  --text-secondary: #6b7280;
  --accent-color: #1e88e5;
  --border-color: rgba(0, 0, 0, 0.1);
  --card-bg: rgba(255, 255, 255, 0.8);
  --input-bg: rgba(0, 0, 0, 0.03);
}

/* ==================== BASE STYLES ==================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Inter", system-ui, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.3s var(--transition-smooth),
    color 0.3s var(--transition-smooth);
}

/* ==================== CUSTOM SCROLLBAR ==================== */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--accent-color);
  border-radius: 4px;
}

/* ==================== NAVIGATION ==================== */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--bg-primary);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  transition: all 0.3s var(--transition-smooth);
}

nav.scrolled {
  background: var(--bg-primary);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

/* ==================== HERO SECTION ==================== */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  background: linear-gradient(
    180deg,
    var(--bg-primary) 0%,
    var(--bg-secondary) 100%
  );
  overflow: hidden;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(var(--border-color) 1px, transparent 1px),
    linear-gradient(90deg, var(--border-color) 1px, transparent 1px);
  background-size: 60px 60px;
  animation: grid-move 20s linear infinite;
  opacity: 0.3;
}

@keyframes grid-move {
  0% {
    transform: translate(0, 0);
  }
  100% {
    transform: translate(60px, 60px);
  }
}

.hero-glow {
  position: absolute;
  width: 600px;
  height: 600px;
  background: radial-gradient(
    circle,
    rgba(30, 136, 229, 0.15) 0%,
    transparent 70%
  );
  top: -200px;
  right: -200px;
  animation: glow-pulse 8s ease-in-out infinite;
}

@keyframes glow-pulse {
  0%,
  100% {
    opacity: 0.3;
    transform: scale(1);
  }
  50% {
    opacity: 0.6;
    transform: scale(1.2);
  }
}

/* ==================== TYPOGRAPHY ==================== */
.display-xl {
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(3rem, 8vw, 7rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.display-lg {
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(2rem, 5vw, 4.5rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.display-md {
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(1.5rem, 3vw, 3rem);
  font-weight: 700;
  line-height: 1.2;
}

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

/* ==================== BUTTONS ==================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 2rem;
  font-weight: 600;
  border-radius: 0.5rem;
  transition: all 0.3s var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--accent-color);
  color: white;
  border: 2px solid var(--accent-color);
}

.btn-primary:hover {
  background: transparent;
  color: var(--accent-color);
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(30, 136, 229, 0.3);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 2px solid var(--border-color);
}

.btn-secondary:hover {
  border-color: var(--accent-color);
  transform: translateY(-2px);
}

/* ==================== CARDS ==================== */
.feature-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  padding: 2.5rem;
  transition: all 0.4s var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(30, 136, 229, 0.1) 0%,
    transparent 100%
  );
  opacity: 0;
  transition: opacity 0.4s var(--transition-smooth);
}

.feature-card:hover {
  border-color: var(--accent-color);
  transform: translateY(-8px);
}

.feature-card:hover::before {
  opacity: 1;
}

.company-card {
  background: var(--input-bg);
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  padding: 2rem;
  transition: all 0.3s var(--transition-smooth);
  text-align: center;
}

.company-card:hover {
  background: var(--card-bg);
  border-color: var(--accent-color);
  transform: translateY(-4px);
}

/* ==================== UTILITIES ==================== */
.number-indicator {
  font-family: "Space Grotesk", sans-serif;
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent-color);
  display: inline-block;
  margin-bottom: 1.5rem;
}

.stat-number {
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  background: linear-gradient(135deg, #1e88e5 0%, #64b5f6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ==================== ANIMATIONS ==================== */
.reveal,
.reveal-left,
.reveal-right {
  opacity: 0;
  transform: translateY(50px);
  transition: all 0.8s var(--transition-smooth);
}

.reveal-left {
  transform: translateX(-50px);
}

.reveal-right {
  transform: translateX(50px);
}

.reveal.active,
.reveal-left.active,
.reveal-right.active {
  opacity: 1;
  transform: translate(0, 0);
}

.delay-100 {
  transition-delay: 0.1s;
}
.delay-200 {
  transition-delay: 0.2s;
}
.delay-300 {
  transition-delay: 0.3s;
}
.delay-400 {
  transition-delay: 0.4s;
}
.delay-500 {
  transition-delay: 0.5s;
}
.delay-600 {
  transition-delay: 0.6s;
}

/* ==================== FORMS ==================== */
.form-input {
  width: 100%;
  background: var(--input-bg);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  padding: 1rem 1.25rem;
  color: var(--text-primary);
  font-size: 1rem;
  transition: all 0.3s var(--transition-smooth);
}

.form-input:focus {
  outline: none;
  border-color: var(--accent-color);
  background: var(--card-bg);
  box-shadow: 0 0 0 4px rgba(30, 136, 229, 0.1);
}

.form-input::placeholder {
  color: var(--text-secondary);
  opacity: 0.6;
}

/* ==================== MOBILE MENU ==================== */
.mobile-menu {
  transform: translateX(100%);
  transition: transform 0.3s var(--transition-smooth);
  background: var(--bg-primary);
}

.mobile-menu.active {
  transform: translateX(0);
}

/* ==================== THEME TOGGLE ==================== */
.theme-toggle {
  width: 60px;
  height: 30px;
  background: var(--border-color);
  border-radius: 15px;
  position: relative;
  cursor: pointer;
  transition: background 0.3s var(--transition-smooth);
}

.theme-toggle:hover {
  background: var(--accent-color);
}

.theme-toggle-slider {
  width: 24px;
  height: 24px;
  background: white;
  border-radius: 50%;
  position: absolute;
  top: 3px;
  left: 3px;
  transition: transform 0.3s var(--transition-smooth);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
}

[data-theme="light"] .theme-toggle-slider {
  transform: translateX(30px);
}

/* ==================== RESPONSIVE ==================== */
section {
  padding: var(--section-spacing-mobile) 1.5rem;
}

@media (min-width: 1024px) {
  section {
    padding: var(--section-spacing) 2rem;
  }
}

/* ==================== ACCESSIBILITY ==================== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}