/* ============================================================
   YouCoder — Design System & Global Styles
   Inspired by: OpenAI, Anthropic, Google, Figma
   ============================================================ */

/* ---------- CSS Variables ---------- */
:root {
  /* Backgrounds */
  --bg-primary: #050508;
  --bg-secondary: #0a0a12;
  --bg-card: #111118;
  --bg-card-hover: #181825;
  --bg-glass: rgba(12, 12, 24, 0.85);

  /* Text */
  --text-primary: #f0f0f5;
  --text-secondary: #a0a0b8;
  --text-muted: #5c5c78;
  --text-inverse: #050508;

  /* Accent */
  --accent-emerald: #10b981;
  --accent-cyan: #06b6d4;
  --accent-blue: #3b82f6;
  --accent-gradient: linear-gradient(135deg, #10b981 0%, #06b6d4 50%, #3b82f6 100%);
  --accent-glow: rgba(16, 185, 129, 0.15);

  /* Mode Colors */
  --mode-plan: #f59e0b;
  --mode-ask: #3b82f6;
  --mode-act: #10b981;
  --mode-yolo: #ef4444;

  /* Borders */
  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-medium: rgba(255, 255, 255, 0.1);
  --border-strong: rgba(255, 255, 255, 0.16);

  /* Sizing */
  --nav-height: 64px;
  --max-width: 1200px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  /* Transitions */
  --ease-out-expo: cubic-bezier(0.19, 1, 0.22, 1);
  --ease-out-back: cubic-bezier(0.34, 1.56, 0.64, 1);
  --transition-fast: 150ms var(--ease-out-expo);
  --transition-base: 300ms var(--ease-out-expo);
  --transition-slow: 500ms var(--ease-out-expo);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
}

::selection {
  background: rgba(16, 185, 129, 0.3);
  color: #fff;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb {
  background: var(--border-medium);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover { background: var(--border-strong); }

/* ============================================================
   NAVBAR
   ============================================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  background: var(--bg-glass);
  border-bottom: 1px solid var(--border-subtle);
  transition: background var(--transition-base), border-color var(--transition-base);
}

.navbar.scrolled {
  background: rgba(5, 5, 8, 0.95);
  border-bottom-color: var(--border-medium);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 32px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -0.01em;
  transition: opacity var(--transition-fast);
}

.nav-logo:hover { opacity: 0.85; }

/* Logo cursor blink */
.logo-cursor {
  animation: logo-blink 1.2s var(--ease-out-expo) infinite;
}

@keyframes logo-blink {
  0%, 100% { opacity: 0.9; }
  50% { opacity: 0.15; }
}

.nav-links {
  display: flex;
  gap: 4px;
}

.nav-links a {
  padding: 6px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.nav-links a:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.nav-links a:active {
  transform: scale(0.96);
  transition: transform 0.08s ease;
}

.nav-links a.active {
  color: #10b981;
  background: rgba(16, 185, 129, 0.1);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-medium);
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.nav-cta:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--border-strong);
}

/* Language toggle */
.lang-toggle {
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 600;
  font-family: var(--font-sans);
  letter-spacing: 0.02em;
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.lang-toggle:hover {
  color: var(--text-primary);
  background: rgba(16, 185, 129, 0.12);
  border-color: rgba(16, 185, 129, 0.25);
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 32px 80px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

/* Animated gradient orbs */
.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.3;
  animation: orbFloat 20s ease-in-out infinite;
}

.orb-1 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(16, 185, 129, 0.4), transparent 70%);
  top: -200px;
  left: -100px;
  animation-delay: 0s;
}

.orb-2 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.35), transparent 70%);
  bottom: -150px;
  right: -100px;
  animation-delay: -7s;
}

.orb-3 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.3), transparent 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation-delay: -14s;
}

@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(40px, -30px) scale(1.08); }
  50% { transform: translate(-20px, 20px) scale(0.95); }
  75% { transform: translate(-30px, -10px) scale(1.05); }
}

/* Subtle grid overlay */
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse at 50% 50%, black 30%, transparent 70%);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
}

/* Badge */
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 100px;
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.2);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--accent-emerald);
  letter-spacing: 0.01em;
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-emerald);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.6); }
  50% { opacity: 0.6; box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
}

/* Title */
.hero-title {
  font-size: clamp(3rem, 7vw, 5.5rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.05;
}

.title-line {
  display: block;
}

.title-accent {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  color: transparent;
}

.hero-subtitle {
  font-size: clamp(1rem, 1.8vw, 1.2rem);
  color: var(--text-secondary);
  max-width: 560px;
  line-height: 1.7;
  font-weight: 400;
}

/* Buttons */
.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: center;
}

.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  transition: all var(--transition-base);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--accent-gradient);
  color: #fff;
  border: none;
  box-shadow: 0 0 40px rgba(16, 185, 129, 0.2), 0 4px 20px rgba(0, 0, 0, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 60px rgba(16, 185, 129, 0.35), 0 8px 30px rgba(0, 0, 0, 0.4);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-medium);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--border-strong);
  transform: translateY(-1px);
}

.btn-lg {
  padding: 18px 36px;
  font-size: 1rem;
}

/* Terminal mock */
.hero-terminal {
  margin-top: 16px;
  width: 100%;
  max-width: 480px;
  background: rgba(0, 0, 0, 0.5);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  overflow: hidden;
  backdrop-filter: blur(10px);
}

.term-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid var(--border-subtle);
}

.term-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.dot-red { background: #ff5f56; }
.dot-yellow { background: #ffbd2e; }
.dot-green { background: #27ca40; }

.term-title {
  margin-left: 8px;
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
}

.term-body {
  padding: 16px 18px;
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 0.875rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

.term-prompt {
  color: var(--accent-emerald);
  font-weight: 700;
}

.term-cmd {
  color: var(--text-primary);
}

.term-cursor {
  color: var(--accent-cyan);
  animation: blink 1s step-end infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

/* ── Hero Download Chips ── */
.hero-downloads {
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.download-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
}

.download-chips {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
}

.download-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-medium);
  border-radius: 100px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  transition: all var(--transition-base);
}

.download-chip:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--accent-emerald);
  color: var(--text-primary);
  transform: translateY(-1px);
}

.download-chip span {
  font-size: 1.1rem;
}

/* ============================================================
   SECTIONS (Shared)
   ============================================================ */
.section {
  padding: 120px 32px;
  position: relative;
}

.section-dark {
  background: var(--bg-secondary);
}

.section-header {
  max-width: 700px;
  margin: 0 auto 72px;
  text-align: center;
}

.section-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent-emerald);
  margin-bottom: 16px;
  padding: 4px 12px;
  border-radius: 4px;
  background: rgba(16, 185, 129, 0.08);
}

.section-title {
  font-size: clamp(2rem, 4vw, 3.25rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.15;
  margin-bottom: 20px;
}

.text-accent {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  color: transparent;
}

.section-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 540px;
  margin: 0 auto;
}

/* ============================================================
   FEATURES GRID
   ============================================================ */
.features-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.feature-card {
  background: var(--bg-card);
  padding: 40px 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: all var(--transition-base);
  position: relative;
}

.feature-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--accent-glow);
  opacity: 0;
  transition: opacity var(--transition-base);
}

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

.feature-card:hover {
  background: var(--bg-card-hover);
}

.feature-icon {
  position: relative;
  z-index: 1;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--accent-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: 0 4px 16px rgba(16, 185, 129, 0.2);
}

.feature-card h3 {
  position: relative;
  z-index: 1;
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.feature-card p {
  position: relative;
  z-index: 1;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ============================================================
   ARCHITECTURE DIAGRAM
   ============================================================ */
.arch-diagram {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.arch-layer {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
}

.arch-box {
  padding: 14px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 600;
  font-family: 'JetBrains Mono', monospace;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 2px;
  border: 1px solid var(--border-subtle);
  min-width: 120px;
  transition: all var(--transition-base);
}

.arch-box span {
  font-family: 'Inter', sans-serif;
  font-size: 0.7rem;
  font-weight: 400;
  color: var(--text-muted);
}

.arch-box:hover {
  border-color: var(--border-strong);
  background: rgba(255, 255, 255, 0.03);
}

.arch-cli { background: rgba(16, 185, 129, 0.08); border-color: rgba(16, 185, 129, 0.25); }
.arch-tui { background: rgba(6, 182, 212, 0.08); border-color: rgba(6, 182, 212, 0.25); }
.arch-core { background: rgba(239, 68, 68, 0.08); border-color: rgba(239, 68, 68, 0.25); }
.arch-llm { background: rgba(245, 158, 11, 0.08); border-color: rgba(245, 158, 11, 0.25); }
.arch-tools { background: rgba(59, 130, 246, 0.08); border-color: rgba(59, 130, 246, 0.25); }
.arch-sub { background: rgba(139, 92, 246, 0.06); border-color: rgba(139, 92, 246, 0.15); min-width: 100px; padding: 10px 14px; font-size: 0.72rem; }

.arch-arrow {
  text-align: center;
  font-size: 1.5rem;
  color: var(--text-muted);
  padding: 4px 0;
}

.arch-channel {
  text-align: center;
  padding: 16px 0;
  position: relative;
}

.channel-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.channel-flow {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 6px;
  flex-wrap: wrap;
}

.flow-item {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--text-secondary);
  padding: 4px 10px;
  background: rgba(255, 255, 255, 0.03);
  border-radius: 4px;
  border: 1px solid var(--border-subtle);
}

/* ============================================================
   TOOLS GRID
   ============================================================ */
.tools-grid {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}

.tool-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 100px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition-base);
  cursor: default;
}

.tool-chip:hover {
  color: var(--text-primary);
  border-color: var(--border-strong);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}

.tool-chip.highlight {
  background: rgba(16, 185, 129, 0.06);
  border-color: rgba(16, 185, 129, 0.2);
  color: var(--accent-emerald);
}

.tool-chip.highlight:hover {
  background: rgba(16, 185, 129, 0.1);
  border-color: rgba(16, 185, 129, 0.4);
}

/* ============================================================
   MODES
   ============================================================ */
.modes-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.mode-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: all var(--transition-base);
  position: relative;
}

.mode-card:hover {
  border-color: var(--border-medium);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
}

.mode-featured {
  border-color: rgba(16, 185, 129, 0.3);
  background: linear-gradient(180deg, rgba(16, 185, 129, 0.04) 0%, var(--bg-card) 100%);
}

.mode-badge {
  display: inline-block;
  padding: 3px 12px;
  border-radius: 4px;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  width: fit-content;
}

.mode-plan { background: rgba(245, 158, 11, 0.12); color: var(--mode-plan); }
.mode-ask { background: rgba(59, 130, 246, 0.12); color: var(--mode-ask); }
.mode-act { background: rgba(16, 185, 129, 0.12); color: var(--mode-act); }
.mode-yolo { background: rgba(239, 68, 68, 0.12); color: var(--mode-yolo); }

.mode-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
}

.mode-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.mode-card ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.mode-card ul li {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.mode-recommend {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  padding: 4px 14px;
  background: var(--accent-gradient);
  color: #fff;
  border-radius: 100px;
  font-size: 0.7rem;
  font-weight: 700;
  white-space: nowrap;
  letter-spacing: 0.03em;
}

/* ============================================================
   PROVIDERS
   ============================================================ */
.providers-row {
  max-width: 700px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.provider-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 28px 20px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  transition: all var(--transition-base);
}

.provider-card:hover {
  border-color: var(--border-medium);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}

.provider-logo {
  width: 48px;
  height: 48px;
}

.provider-more {
  display: flex;
  align-items: center;
  justify-content: center;
}

.provider-card h3 {
  font-size: 0.95rem;
  font-weight: 700;
}

.provider-card p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ============================================================
   CTA
   ============================================================ */
.section-cta {
  background: var(--bg-secondary);
  text-align: center;
}

.cta-content {
  max-width: 600px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.cta-content h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
}

.cta-content p {
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.cta-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: center;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--border-subtle);
  padding: 64px 32px 32px;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 60px;
  flex-wrap: wrap;
}

.footer-brand {
  max-width: 280px;
}

.footer-tagline {
  margin-top: 12px;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  gap: 60px;
  flex-wrap: wrap;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col h4 {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 2px;
}

.footer-col a {
  font-size: 0.875rem;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.footer-col a:hover {
  color: var(--text-primary);
}

.footer-bottom {
  max-width: var(--max-width);
  margin: 48px auto 0;
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
  text-align: center;
}

.footer-bottom p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .modes-grid {
    grid-template-columns: 1fr;
  }

  .providers-row {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero {
    padding: 100px 20px 60px;
  }

  .section {
    padding: 80px 20px;
  }

  .hero-terminal {
    max-width: 100%;
  }

  .channel-flow {
    flex-direction: column;
    align-items: center;
  }

  .footer-inner {
    flex-direction: column;
    gap: 40px;
  }

  .footer-links {
    gap: 40px;
  }
}

/* ============================================================
   SCROLL REVEAL ANIMATIONS
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s var(--ease-out-expo), transform 0.7s var(--ease-out-expo);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.05s; }
.reveal-delay-2 { transition-delay: 0.1s; }
.reveal-delay-3 { transition-delay: 0.15s; }
.reveal-delay-4 { transition-delay: 0.2s; }
.reveal-delay-5 { transition-delay: 0.25s; }
.reveal-delay-6 { transition-delay: 0.3s; }