/* ============================================
   BeatDock — Landing Page Styles
   ============================================ */

/* --- Custom Properties --- */
:root {
  --color-bg: #0a0a0a;
  --color-bg-elevated: #111111;
  --color-bg-subtle: #181818;
  --color-border: #222222;
  --color-border-hover: #333333;
  --color-text-primary: #f5f5f5;
  --color-text-secondary: #a0a0a0;
  --color-text-tertiary: #666666;
  --color-accent: #0099FF;
  --color-accent-hover: #33adff;
  --color-accent-glow: rgba(0, 153, 255, 0.15);

  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Fira Mono', 'Roboto Mono', monospace;

  --radius-sm: 0.375rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;

  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 500ms ease;

  --navbar-height: 4rem;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text-secondary);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-accent-hover);
}

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

code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--color-bg-subtle);
  padding: 0.15em 0.4em;
  border-radius: var(--radius-sm);
  color: var(--color-text-primary);
}

/* --- Layout --- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.section {
  padding: 4rem 0;
}

.section--alt {
  background: var(--color-bg-elevated);
}

.section__title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-text-primary);
  text-align: center;
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}

.section__subtitle {
  text-align: center;
  color: var(--color-text-secondary);
  margin-bottom: 3rem;
  font-size: 1.0625rem;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-family);
  font-weight: 600;
  font-size: 0.9375rem;
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  line-height: 1.4;
}

.btn--primary {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}

.btn--primary:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  box-shadow: 0 0 20px var(--color-accent-glow);
  color: #fff;
}

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

.btn--secondary:hover {
  background: var(--color-accent-glow);
  border-color: var(--color-accent);
  color: var(--color-text-primary);
}

.btn--disabled {
  background: var(--color-bg-subtle);
  color: var(--color-text-tertiary);
  border-color: var(--color-border);
  cursor: default;
  pointer-events: none;
  opacity: 0.7;
}

.btn__badge {
  font-size: 0.625rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: var(--color-border-hover);
  color: var(--color-text-secondary);
  padding: 0.125rem 0.375rem;
  border-radius: 9999px;
  margin-left: 0.25rem;
}

.btn--sm {
  font-size: 0.8125rem;
  padding: 0.5rem 1rem;
}

.btn--lg {
  font-size: 1rem;
  padding: 0.75rem 1.5rem;
}

/* --- Badge --- */
.badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  background: var(--color-bg-subtle);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}

/* ============================================
   Navbar
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--navbar-height);
  background: transparent;
  transition: background var(--transition-base), border-color var(--transition-base);
  border-bottom: 1px solid transparent;
}

.navbar--scrolled {
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom-color: var(--color-border);
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.navbar__brand {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  text-decoration: none;
  color: var(--color-text-primary);
}

.navbar__logo {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
}

.navbar__name {
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: -0.01em;
}

.navbar__links {
  display: none;
  gap: 2rem;
}

.navbar__links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

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

.navbar__actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.navbar__actions .btn--sm {
  display: none;
}

/* Hamburger */
.navbar__hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 28px;
  height: 28px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.navbar__hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text-primary);
  border-radius: 1px;
  transition: all var(--transition-base);
  transform-origin: center;
}

.navbar__hamburger--active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.navbar__hamburger--active span:nth-child(2) {
  opacity: 0;
}

.navbar__hamburger--active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile nav overlay */
.navbar__links--open {
  display: flex;
  flex-direction: column;
  position: fixed;
  top: var(--navbar-height);
  left: 0;
  right: 0;
  background: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 1.5rem 1.25rem;
  gap: 1.25rem;
  border-bottom: 1px solid var(--color-border);
}

.navbar__links--open a {
  font-size: 1rem;
}

/* ============================================
   Hero
   ============================================ */
.hero {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: calc(var(--navbar-height) + 2rem) 0 4rem;
  overflow: hidden;
  background: url('wallpaper.avif') center center / cover no-repeat;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(10, 10, 10, 0.55) 0%,
    rgba(10, 10, 10, 0.7) 40%,
    rgba(10, 10, 10, 0.88) 75%,
    var(--color-bg) 100%
  );
  z-index: 0;
}

.hero__inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.hero__title {
  font-size: 2.25rem;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 1rem;
  max-width: 600px;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
}

.hero__subtitle {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  max-width: 500px;
  margin-bottom: 2rem;
  line-height: 1.6;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.hero__badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
}

/* ============================================
   Features
   ============================================ */
.features__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

/* --- Card --- */
.card {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}

.card:hover {
  transform: translateY(-2px);
  border-color: var(--color-border-hover);
  box-shadow: 0 4px 24px var(--color-accent-glow);
}

.card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--color-accent-glow);
  color: var(--color-accent);
  margin-bottom: 1rem;
}

.card__title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 0.375rem;
}

.card__description {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

/* ============================================
   Commands
   ============================================ */
.commands__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.625rem;
}

.command {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  padding: 0.75rem 1rem;
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast);
}

.command:hover {
  border-color: var(--color-border-hover);
}

.command__name {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-accent);
  background: none;
  padding: 0;
  white-space: nowrap;
  flex-shrink: 0;
}

.command__name span {
  color: var(--color-text-tertiary);
  font-weight: 400;
}

.command__desc {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
}

/* ============================================
   Quick Start (Steps)
   ============================================ */
.steps {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  max-width: 900px;
  margin: 0 auto 2rem;
}

.step {
  text-align: center;
  padding: 1.5rem;
}

.step__number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 2px solid var(--color-accent);
  color: var(--color-accent);
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.step__title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 0.5rem;
}

.step__desc {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  max-width: 280px;
  margin: 0 auto;
}

.step__desc a {
  font-weight: 500;
}

.step__connector {
  display: none;
}

.steps__cta {
  text-align: center;
  font-size: 0.875rem;
  color: var(--color-text-tertiary);
}

.steps__cta a {
  font-weight: 500;
}

/* ============================================
   Setup Guide
   ============================================ */
.guide {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.guide__block {
  padding: 0;
}

.guide__heading {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 1rem;
}

.guide__heading-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-accent-glow);
  color: var(--color-accent);
  font-size: 0.8125rem;
  font-weight: 700;
  flex-shrink: 0;
}

.guide__text {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 1rem;
}

.guide__text strong {
  color: var(--color-text-primary);
  font-weight: 600;
}

.guide__text--muted {
  color: var(--color-text-tertiary);
  font-size: 0.8125rem;
  margin-top: 0.75rem;
  margin-bottom: 0;
}

.guide__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 0;
}

.guide__list li {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  padding-left: 1.25rem;
  position: relative;
}

.guide__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
}

/* Intents */
.guide__intents {
  display: flex;
  flex-wrap: wrap;
  gap: 0.625rem;
  margin: 1rem 0;
}

.guide__intent {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-text-primary);
  padding: 0.5rem 0.875rem;
  border-radius: var(--radius-md);
  background: rgba(34, 197, 94, 0.08);
  border: 1px solid rgba(34, 197, 94, 0.2);
}

.guide__intent svg {
  color: #22c55e;
  flex-shrink: 0;
}

/* Code blocks */
.guide__code {
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  overflow: hidden;
  margin: 0.75rem 0;
}

.guide__code-header {
  display: flex;
  align-items: center;
  padding: 0.5rem 1rem;
  background: var(--color-bg-subtle);
  border-bottom: 1px solid var(--color-border);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-text-tertiary);
  font-family: var(--font-mono);
}

.guide__code pre {
  margin: 0;
  padding: 1rem;
  overflow-x: auto;
  background: var(--color-bg);
  -webkit-overflow-scrolling: touch;
}

.guide__code code {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
  background: none;
  padding: 0;
  border-radius: 0;
}

/* Config table */
.guide__table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  -webkit-overflow-scrolling: touch;
}

.guide__table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8125rem;
}

.guide__table th {
  text-align: left;
  padding: 0.625rem 1rem;
  font-weight: 600;
  color: var(--color-text-primary);
  background: var(--color-bg-subtle);
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
}

.guide__table td {
  padding: 0.5rem 1rem;
  color: var(--color-text-secondary);
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
}

.guide__table tr:last-child td {
  border-bottom: none;
}

.guide__table tr:hover td {
  background: var(--color-bg-subtle);
}

.guide__table code {
  font-size: 0.75rem;
}

/* ============================================
   Built With
   ============================================ */
.tech__grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.5rem;
}

.tech__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.625rem;
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-bg-subtle);
  transition: transform var(--transition-base), border-color var(--transition-base);
  text-decoration: none;
  min-width: 120px;
}

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

.tech__logo {
  width: 40px;
  height: 40px;
  object-fit: contain;
}

.tech__logo--text {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
}

.tech__name {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-text-secondary);
}

/* ============================================
   Footer
   ============================================ */
.footer {
  border-top: 1px solid var(--color-border);
  background: var(--color-bg);
}

.footer__inner {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
  padding: 3rem 1.25rem;
}

.footer__brand-row {
  display: flex;
  align-items: center;
  gap: 0.625rem;
}

.footer__logo {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
}

.footer__name {
  font-weight: 700;
  font-size: 1rem;
  color: var(--color-text-primary);
}

.footer__tagline {
  font-size: 0.8125rem;
  color: var(--color-text-tertiary);
  margin-top: 0.5rem;
}

.footer__links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.footer__column {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer__heading {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.25rem;
}

.footer__column a {
  font-size: 0.8125rem;
  color: var(--color-text-tertiary);
}

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

.footer__bottom {
  border-top: 1px solid var(--color-border);
  padding: 1.25rem 0;
}

.footer__bottom p {
  font-size: 0.75rem;
  color: var(--color-text-tertiary);
  text-align: center;
}

/* ============================================
   Animations
   ============================================ */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Staggered fade-in for feature cards */
.features__grid .card:nth-child(1) { transition-delay: 0ms; }
.features__grid .card:nth-child(2) { transition-delay: 80ms; }
.features__grid .card:nth-child(3) { transition-delay: 160ms; }
.features__grid .card:nth-child(4) { transition-delay: 240ms; }
.features__grid .card:nth-child(5) { transition-delay: 320ms; }
.features__grid .card:nth-child(6) { transition-delay: 400ms; }
.features__grid .card:nth-child(7) { transition-delay: 480ms; }
.features__grid .card:nth-child(8) { transition-delay: 560ms; }
.features__grid .card:nth-child(9) { transition-delay: 640ms; }

/* Staggered fade-in for commands */
.commands__grid .command:nth-child(1) { transition-delay: 0ms; }
.commands__grid .command:nth-child(2) { transition-delay: 40ms; }
.commands__grid .command:nth-child(3) { transition-delay: 80ms; }
.commands__grid .command:nth-child(4) { transition-delay: 120ms; }
.commands__grid .command:nth-child(5) { transition-delay: 160ms; }
.commands__grid .command:nth-child(6) { transition-delay: 200ms; }
.commands__grid .command:nth-child(7) { transition-delay: 240ms; }
.commands__grid .command:nth-child(8) { transition-delay: 280ms; }
.commands__grid .command:nth-child(9) { transition-delay: 320ms; }
.commands__grid .command:nth-child(10) { transition-delay: 360ms; }
.commands__grid .command:nth-child(11) { transition-delay: 400ms; }
.commands__grid .command:nth-child(12) { transition-delay: 440ms; }
.commands__grid .command:nth-child(13) { transition-delay: 480ms; }
.commands__grid .command:nth-child(14) { transition-delay: 520ms; }
.commands__grid .command:nth-child(15) { transition-delay: 560ms; }
.commands__grid .command:nth-child(16) { transition-delay: 600ms; }
.commands__grid .command:nth-child(17) { transition-delay: 640ms; }

/* ============================================
   Responsive — Tablet (768px+)
   ============================================ */
@media (min-width: 768px) {
  .section {
    padding: 5rem 0;
  }

  .section__title {
    font-size: 2rem;
  }

  .container {
    padding: 0 2rem;
  }

  /* Navbar */
  .navbar__links {
    display: flex;
  }

  .navbar__hamburger {
    display: none;
  }

  .navbar__actions .btn--sm {
    display: inline-flex;
  }

  /* Hero */
  .hero__title {
    font-size: 3rem;
  }

  /* Features */
  .features__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
  }

  /* Commands */
  .commands__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.625rem;
  }

  /* Steps */
  .steps {
    flex-direction: row;
    align-items: flex-start;
    gap: 0;
  }

  .step {
    flex: 1;
  }

  .step__connector {
    display: block;
    flex-shrink: 0;
    width: 40px;
    height: 2px;
    background: var(--color-border);
    margin-top: 2.85rem;
  }

  /* Footer */
  .footer__inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-start;
    padding: 3rem 2rem;
  }

  .footer__brand {
    flex-shrink: 0;
  }
}

/* ============================================
   Responsive — Desktop (1024px+)
   ============================================ */
@media (min-width: 1024px) {
  .section {
    padding: 6rem 0;
  }

  .section__title {
    font-size: 2.25rem;
  }

  .section__subtitle {
    margin-bottom: 3.5rem;
  }

  /* Hero */
  .hero__title {
    font-size: 3.5rem;
  }

  /* Features */
  .features__grid {
    grid-template-columns: repeat(3, 1fr);
  }

  /* Commands */
  .commands__grid {
    grid-template-columns: repeat(4, 1fr);
  }
}