/* ═══════════════════════════════════════════════════════════════
   OCTOPILOT — Component Library
   Buttons · Cards · Navigation · Chips · Modals
   ═══════════════════════════════════════════════════════════════ */

/* ── Button System ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 14px 28px;
  border-radius: var(--radius-full);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.02em;
  white-space: nowrap;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition:
    transform 0.35s var(--ease-out),
    box-shadow 0.35s var(--ease-out),
    background 0.35s var(--ease-out),
    border-color 0.35s var(--ease-out);
}

.btn:active {
  transform: scale(0.97);
}

/* Primary: Red power gradient */
.btn--primary {
  background: linear-gradient(180deg, #d91a28 0%, #9a0c14 100%);
  color: var(--white-pure);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.08) inset,
    0 12px 36px rgba(196, 20, 32, 0.3);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.12) inset,
    0 18px 48px rgba(196, 20, 32, 0.4);
}

.btn--primary::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(180deg, rgba(255,255,255,0.1), transparent 50%);
  opacity: 0;
  transition: opacity 0.3s;
}

.btn--primary:hover::after {
  opacity: 1;
}

/* Secondary: Glass panel */
.btn--secondary {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-primary);
  border: 1px solid var(--border-hover);
  backdrop-filter: blur(12px);
}

.btn--secondary:hover {
  transform: translateY(-2px);
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.22);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

/* Tertiary: Ghost / text */
.btn--ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid transparent;
  padding: 12px 20px;
}

.btn--ghost:hover {
  color: var(--text-primary);
  border-color: var(--border);
}

/* Small variant */
.btn--sm {
  padding: 10px 20px;
  font-size: var(--text-xs);
}

/* Large variant */
.btn--lg {
  padding: 18px 36px;
  font-size: var(--text-base);
}

/* Icon inside button */
.btn__icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

/* App Store badge style button */
.btn--appstore {
  background: linear-gradient(180deg, #1a1a1e 0%, #111113 100%);
  border: 1px solid rgba(255,255,255,0.16);
  padding: 12px 24px;
  gap: 12px;
  box-shadow:
    0 1px 0 rgba(255,255,255,0.06) inset,
    0 4px 20px rgba(0,0,0,0.3);
}

.btn--appstore:hover {
  transform: translateY(-2px);
  border-color: rgba(255,255,255,0.28);
  background: linear-gradient(180deg, #222226 0%, #161618 100%);
  box-shadow:
    0 1px 0 rgba(255,255,255,0.08) inset,
    0 10px 32px rgba(0,0,0,0.4);
}

.btn--appstore .btn__store-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  line-height: 1.2;
}

.btn--appstore .btn__store-label {
  font-size: 0.6rem;
  font-weight: 400;
  color: var(--text-secondary);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.btn--appstore .btn__store-name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}


/* ── Card System ── */
.card {
  position: relative;
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  background: transparent;
  border: none;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  overflow: hidden;
  transition:
    transform 0.4s var(--ease-out),
    background 0.4s var(--ease-out);
}

.card:hover {
  transform: translateY(-4px);
  background: rgba(255, 255, 255, 0.02);
}

/* Card top accent line on hover */
.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent-dim), transparent);
  opacity: 0;
  transition: opacity 0.4s;
}

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

/* Card icon */
.card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin-bottom: var(--space-lg);
  border-radius: 50%;
  background: var(--accent-subtle);
  color: var(--accent-bright);
  font-size: var(--text-lg);
}

.card__icon svg {
  width: 22px;
  height: 22px;
  stroke: var(--accent-bright);
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.card__number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  margin-bottom: var(--space-lg);
  border-radius: 50%;
  background: var(--accent-subtle);
  color: var(--accent-bright);
  font-size: var(--text-sm);
  font-weight: 700;
  font-family: var(--font-mono);
}

.card__title {
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-sm);
  color: var(--text-primary);
}

.card__text {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.7;
}

/* Large card variant */
.card--lg {
  padding: var(--space-xl);
}

/* Featured card with accent border */
.card--featured {
  border-color: var(--border-accent);
}

.card--featured::before {
  opacity: 0.6;
}

/* Glass card variant */
.card--glass {
  background: var(--glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

/* ── HUD Corner Labels ── */
.card__hud-label {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-ghost);
}


/* ── Navigation ── */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  padding: var(--space-md) var(--space-lg);
  transition: all 0.5s var(--ease-out);
}

.site-nav.is-scrolled {
  background: var(--glass-strong);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: var(--space-sm) var(--space-lg);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1440px;
  margin: 0 auto;
  gap: var(--space-xl);
}

/* Nav brand */
.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: calc(var(--z-nav) + 2);
}

.nav-brand__logo {
  width: 38px;
  height: 38px;
  object-fit: contain;
  filter: drop-shadow(0 0 12px var(--accent-glow));
}

.nav-brand__name {
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.nav-brand__ai {
  color: var(--accent-bright);
  font-weight: 700;
}

/* Nav links */
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav-links a {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  position: relative;
  padding: var(--space-xs) 0;
  transition: color 0.3s var(--ease-out);
}

.nav-links a::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1.5px;
  background: var(--accent-bright);
  transition: width 0.3s var(--ease-out);
}

.nav-links a:hover,
.nav-links a.is-active {
  color: var(--text-primary);
}

.nav-links a:hover::after,
.nav-links a.is-active::after {
  width: 100%;
}

/* Nav CTA */
.nav-cta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

/* Nav hamburger */
.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 28px;
  height: 28px;
  cursor: pointer;
  z-index: calc(var(--z-nav) + 2);
  position: relative;
}

.nav-hamburger__line {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all 0.3s var(--ease-out);
  transform-origin: center;
}

.nav-hamburger.is-open .nav-hamburger__line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-hamburger.is-open .nav-hamburger__line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.nav-hamburger.is-open .nav-hamburger__line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile nav overlay */
.mobile-nav {
  position: fixed;
  inset: 0;
  z-index: calc(var(--z-nav) + 1);
  background: var(--bg-deep);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-xl);
  opacity: 0;
  visibility: hidden;
  transition: all 0.5s var(--ease-out);
}

.mobile-nav.is-open {
  opacity: 1;
  visibility: visible;
}

.mobile-nav a {
  font-size: var(--text-2xl);
  font-family: var(--font-display);
  color: var(--text-secondary);
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.4s var(--ease-out), color 0.3s;
}

.mobile-nav.is-open a {
  opacity: 1;
  transform: translateY(0);
}

.mobile-nav a:hover {
  color: var(--accent-bright);
}

/* Stagger for mobile nav items */
.mobile-nav a:nth-child(1) { transition-delay: 0.1s; }
.mobile-nav a:nth-child(2) { transition-delay: 0.15s; }
.mobile-nav a:nth-child(3) { transition-delay: 0.2s; }
.mobile-nav a:nth-child(4) { transition-delay: 0.25s; }
.mobile-nav a:nth-child(5) { transition-delay: 0.3s; }
.mobile-nav a:nth-child(6) { transition-delay: 0.35s; }
.mobile-nav a:nth-child(7) { transition-delay: 0.4s; }


/* ── Value Chips / Proof Strip ── */
.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 8px 16px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.04em;
  transition: all 0.3s var(--ease-out);
}

.chip:hover {
  border-color: var(--border-accent);
  background: var(--accent-subtle);
  color: var(--text-primary);
}

.chip__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent-glow);
}


/* ── Pillar Module ── */
.pillar {
  position: relative;
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: var(--space-lg);
  padding: var(--space-xl) 0;
  border-bottom: 1px solid var(--border);
}

.pillar:last-child {
  border-bottom: none;
}

.pillar__number {
  font-family: var(--font-mono);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--accent-dim);
  line-height: 1;
}

.pillar__title {
  font-size: var(--text-xl);
  font-weight: 600;
  margin-bottom: var(--space-sm);
  color: var(--text-primary);
}

.pillar__text {
  font-size: var(--text-base);
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 48ch;
}


/* ── Orbital Node ── */
.orbital-node {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.02);
  cursor: pointer;
  transition: all 0.4s var(--ease-out);
}

.orbital-node:hover {
  border-color: var(--border-accent);
  background: var(--accent-subtle);
  transform: translateY(-6px);
  box-shadow: 0 12px 40px rgba(196, 20, 32, 0.15);
}

.orbital-node__icon {
  width: 48px;
  height: 48px;
  margin-bottom: var(--space-md);
  border-radius: 50%;
  background: var(--accent-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
}

.orbital-node__icon svg {
  width: 24px;
  height: 24px;
  stroke: var(--accent-bright);
  fill: none;
  stroke-width: 1.5;
}

.orbital-node__title {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.orbital-node__text {
  font-size: var(--text-xs);
  color: var(--text-muted);
  line-height: 1.5;
}


/* ── Trust Seal ── */
.trust-seal {
  text-align: center;
  padding: var(--space-xl);
}

.trust-seal__icon {
  width: 56px;
  height: 56px;
  margin: 0 auto var(--space-lg);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
}

.trust-seal__icon svg {
  width: 28px;
  height: 28px;
  stroke: var(--silver-bright);
  fill: none;
  stroke-width: 1.5;
}

.trust-seal__title {
  font-size: var(--text-md);
  font-weight: 600;
  margin-bottom: var(--space-sm);
  color: var(--text-primary);
}

.trust-seal__text {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 32ch;
  margin: 0 auto;
}


/* ── Browser Mockup ── */
.browser-mockup {
  position: relative;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--bg-surface);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.browser-mockup__bar {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 12px 16px;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
}

.browser-mockup__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.browser-mockup__dot--red    { background: #ff5f57; }
.browser-mockup__dot--yellow { background: #ffbd2e; }
.browser-mockup__dot--green  { background: #28c840; }

.browser-mockup__url {
  flex: 1;
  margin-left: var(--space-md);
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
}

.browser-mockup__content {
  padding: var(--space-xl);
  min-height: 320px;
  position: relative;
}

/* Animated lines inside mockup */
.mockup-line {
  height: 8px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.05);
  margin-bottom: var(--space-sm);
}

.mockup-line--short { width: 40%; }
.mockup-line--medium { width: 70%; }
.mockup-line--long { width: 90%; }
.mockup-line--accent {
  background: linear-gradient(90deg, var(--accent-subtle), transparent);
  width: 60%;
}


/* ── Scroll Indicator ── */
.scroll-indicator {
  position: absolute;
  bottom: var(--space-xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  color: var(--text-muted);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  animation: scroll-bounce 2s var(--ease-in-out) infinite;
}

.scroll-indicator__line {
  width: 1px;
  height: 40px;
  background: linear-gradient(180deg, var(--accent), transparent);
}

@keyframes scroll-bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}


/* ── Sound Toggle ── */
.sound-toggle {
  position: fixed;
  bottom: var(--space-lg);
  right: var(--space-lg);
  z-index: var(--z-overlay);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--glass);
  backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s var(--ease-out);
}

.sound-toggle:hover {
  border-color: var(--border-hover);
  transform: scale(1.05);
}

.sound-toggle svg {
  width: 16px;
  height: 16px;
  stroke: var(--text-muted);
  fill: none;
  stroke-width: 1.5;
}

.sound-toggle.is-active svg {
  stroke: var(--accent-bright);
}