/* ================================================
   TWProtector Website — Consolidated Style Sheet
   ================================================ */

/* === Brand Design Tokens === */
:root {
  --color-primary: #00d4ff;
  --color-primary-hover: #00b8e6;
  --color-primary-muted: rgba(0, 212, 255, 0.15);
  --color-primary-dim: rgba(0, 212, 255, 0.08);

  --color-bg-page: #0a0f1e;
  --color-bg-card: #111827;
  --color-bg-card-hover: #1a2332;
  --color-bg-surface: #0f1629;
  --color-bg-elevated: #162032;
  --color-bg-input: #1a2332;

  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-hover: rgba(0, 212, 255, 0.3);

  --color-text-primary: #f0f4f8;
  --color-text-secondary: #94a3b8;
  --color-text-muted: #64748b;
  --color-text-accent: #00d4ff;

  --state-success: #10b981;
  --state-warning: #f59e0b;
  --state-error: #ef4444;
  --state-info: #3b82f6;

  --gradient-primary: linear-gradient(135deg, #00d4ff, #0088cc);
  --gradient-hero: linear-gradient(180deg, #0a0f1e 0%, #0d1a2d 100%);
  --gradient-card: linear-gradient(145deg, rgba(0, 212, 255, 0.05), transparent);
  --gradient-glow: radial-gradient(ellipse at center, rgba(0, 212, 255, 0.12), transparent 70%);

  --font-display: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-body: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', 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;

  --leading-tight: 1.2;
  --leading-snug: 1.35;
  --leading-normal: 1.6;
  --leading-relaxed: 1.75;

  --tracking-tight: -0.025em;
  --tracking-normal: 0;
  --tracking-wide: 0.05em;

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

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

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 20px rgba(0, 212, 255, 0.15);
  --shadow-glow-lg: 0 0 40px rgba(0, 212, 255, 0.2);

  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
}

/* === Display Typography Classes === */
.heading-display {
  font-family: var(--font-display);
  font-size: var(--text-6xl);
  font-weight: var(--weight-extrabold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--color-text-primary);
}

.heading-1 {
  font-family: var(--font-display);
  font-size: var(--text-5xl);
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--color-text-primary);
}

.heading-2 {
  font-family: var(--font-display);
  font-size: var(--text-4xl);
  font-weight: var(--weight-bold);
  line-height: var(--leading-snug);
  letter-spacing: var(--tracking-tight);
  color: var(--color-text-primary);
}

.heading-3 {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: var(--weight-semibold);
  line-height: var(--leading-snug);
  color: var(--color-text-primary);
}

.heading-4 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--weight-semibold);
  line-height: var(--leading-snug);
  color: var(--color-text-primary);
}

.text-body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--weight-normal);
  line-height: var(--leading-normal);
  color: var(--color-text-secondary);
}

.text-body-lg {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-weight: var(--weight-normal);
  line-height: var(--leading-relaxed);
  color: var(--color-text-secondary);
}

.text-caption {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: var(--weight-normal);
  line-height: var(--leading-normal);
  color: var(--color-text-muted);
}

.text-mono {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: var(--weight-normal);
  line-height: var(--leading-normal);
  color: var(--color-text-secondary);
}

/* === Utility Styles === */
.no-scrollbar::-webkit-scrollbar {
  display: none;
}
.no-scrollbar {
  -ms-overflow-style: none;
  scrollbar-width: none;
}

[data-icon] {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  -webkit-mask-size: contain;
  mask-size: contain;
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
  -webkit-mask-position: center;
  mask-position: center;
  background-color: currentColor;
}

/* === Navigation Active State === */
.nav-link[data-active="true"] {
  color: #00d4ff !important;
  border-bottom-color: #00d4ff !important;
}

/* === Features Page: Timeline & Layer Cards === */
.timeline-line {
  position: absolute;
  left: 23px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, rgba(0,212,255,0.4), rgba(0,212,255,0.1));
}
.phase-label-gradient-1 {
  background: linear-gradient(135deg, rgba(0,212,255,0.2), rgba(0,136,204,0.15));
}
.phase-label-gradient-2 {
  background: linear-gradient(135deg, rgba(16,185,129,0.2), rgba(0,212,255,0.15));
}
.phase-label-gradient-3 {
  background: linear-gradient(135deg, rgba(245,158,11,0.2), rgba(0,212,255,0.15));
}
.phase-label-gradient-4 {
  background: linear-gradient(135deg, rgba(139,92,246,0.2), rgba(0,212,255,0.15));
}
.layer-card {
  background: #111827;
  border: 1px solid rgba(255,255,255,0.06);
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}
.layer-card:hover {
  border-color: rgba(0,212,255,0.3);
  box-shadow: 0 0 20px rgba(0,212,255,0.08);
}
.order-badge {
  background: linear-gradient(135deg, #00d4ff, #0088cc);
  color: #fff;
  min-width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
  font-size: 0.8rem;
  font-weight: 700;
  border-radius: 10px;
  padding: 0 8px;
}

/* === Pricing Page: Enterprise Card Glow === */
.pricing-card-enterprise {
  position: relative;
  background: linear-gradient(145deg, rgba(0, 212, 255, 0.08), rgba(17, 24, 39, 0.95));
  border: 1px solid rgba(0, 212, 255, 0.4);
  box-shadow: 0 0 30px rgba(0, 212, 255, 0.12), 0 0 60px rgba(0, 212, 255, 0.06), inset 0 1px 0 rgba(0, 212, 255, 0.1);
}
.pricing-card-enterprise::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.5), rgba(0, 136, 204, 0.2), rgba(0, 212, 255, 0.5));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

/* === Pricing Page: FAQ Accordion === */
.faq-item .faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}
.faq-item.open .faq-answer {
  max-height: 240px;
}
.faq-item .faq-chevron {
  transition: transform 0.3s ease;
}
.faq-item.open .faq-chevron {
  transform: rotate(180deg);
}