/* ============================================================
   PresentTimer — styles.css
   Aesthetic: Dark precision instrument. High contrast. Zero fluff.
   ============================================================ */

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

:root {
  /* Core palette */
  --bg:          #060608;
  --bg-raised:   #0e0e12;
  --bg-card:     #13131a;
  --bg-hover:    #1a1a24;
  --border:      #1e1e2a;
  --border-glow: #2a2a3a;

  /* Text */
  --text:        #e8e8ec;
  --text-dim:    #8888a0;
  --text-muted:  #55556a;

  /* Accent — electric cyan */
  --accent:      #00f0ff;
  --accent-dim:  #00b8c5;
  --accent-glow: rgba(0, 240, 255, 0.15);
  --accent-hot:  #ff3366;

  /* Fonts */
  --font-display: 'Syne', sans-serif;
  --font-mono:    'JetBrains Mono', monospace;
  --font-body:    'Syne', sans-serif;

  /* Sizing */
  --max-w: 1200px;
  --gap:   1.5rem;

  /* Ring */
  --ring-circumference: 565.48;
}

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

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

a { color: var(--accent); text-decoration: none; transition: color 0.2s; }
a:hover { color: #fff; }

.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}

/* --- HEADER --- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(6, 6, 8, 0.85);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--text);
  letter-spacing: -0.02em;
}
.logo:hover { color: var(--text); }
.logo-icon { font-size: 1.3rem; }
.logo-accent { color: var(--accent); }

.main-nav { display: flex; gap: 2rem; }
.nav-link {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 400;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  transition: color 0.2s;
}
.nav-link:hover { color: var(--accent); }

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.mobile-menu-btn span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-dim);
  border-radius: 2px;
  transition: all 0.3s;
}
.mobile-menu-btn.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.mobile-menu-btn.active span:nth-child(2) { opacity: 0; }
.mobile-menu-btn.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

.mobile-nav {
  display: none;
  position: fixed;
  top: 60px; left: 0; right: 0;
  z-index: 99;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  flex-direction: column;
  padding: 1rem 1.5rem;
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-dim);
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.mobile-nav a:last-child { border-bottom: none; }

/* --- HERO --- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 100px 1.5rem 60px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
  opacity: 0.5;
}

.hero-inner {
  text-align: center;
  max-width: 700px;
  width: 100%;
  position: relative;
  z-index: 1;
}

.hero-headline { margin-bottom: 0.5rem; }
.hero-sub {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  margin-bottom: 0.25rem;
}
.hero-main {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 10vw, 7rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.04em;
  background: linear-gradient(135deg, #fff 30%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-tagline {
  font-family: var(--font-body);
  font-size: 1.1rem;
  color: var(--text-dim);
  margin-bottom: 3rem;
}

/* --- TIMER DISPLAY --- */
.timer-display { margin-bottom: 2rem; }

.timer-ring {
  position: relative;
  width: 280px;
  height: 280px;
  margin: 0 auto;
}

.ring-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.ring-bg {
  fill: none;
  stroke: var(--border);
  stroke-width: 3;
}

.ring-progress {
  fill: none;
  stroke: var(--accent);
  stroke-width: 3;
  stroke-linecap: round;
  stroke-dasharray: var(--ring-circumference);
  stroke-dashoffset: var(--ring-circumference);
  transition: stroke-dashoffset 0.3s ease;
  filter: drop-shadow(0 0 8px var(--accent-glow));
}

.timer-digits {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
}

.digit-group {
  font-family: var(--font-mono);
  font-size: clamp(2.5rem, 8vw, 4rem);
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.02em;
  min-width: 2ch;
  text-align: center;
}

.digit-sep {
  font-family: var(--font-mono);
  font-size: clamp(2rem, 6vw, 3rem);
  color: var(--text-muted);
  margin: 0 0.1em;
  animation: blink 1s step-end infinite;
}

@keyframes blink {
  50% { opacity: 0.2; }
}

/* Finished state */
.timer-display.finished .digit-group { color: var(--accent-hot); }
.timer-display.finished .ring-progress { stroke: var(--accent-hot); filter: drop-shadow(0 0 12px rgba(255, 51, 102, 0.4)); }

/* --- TIMER CONTROLS --- */
.timer-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}

.duration-input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.duration-input {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.7rem 2.8rem 0.7rem 1rem;
  width: 120px;
  text-align: center;
  outline: none;
  transition: border-color 0.2s;
  -moz-appearance: textfield;
}
.duration-input::-webkit-inner-spin-button,
.duration-input::-webkit-outer-spin-button { -webkit-appearance: none; }
.duration-input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow); }

.duration-unit {
  position: absolute;
  right: 0.8rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  pointer-events: none;
}

/* Buttons */
.btn {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border: none;
  border-radius: 8px;
  padding: 0.75rem 1.8rem;
  cursor: pointer;
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* Ensure hidden attribute works properly */
.btn[hidden] {
  display: none !important;
}

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

.btn-pause {
  background: var(--bg-card);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-pause:hover { border-color: var(--accent); color: var(--accent); }

.btn-reset {
  background: transparent;
  color: var(--text-dim);
  border: 1px solid var(--border);
}
.btn-reset:hover { border-color: var(--accent-hot); color: var(--accent-hot); }

.btn-stop-alarm {
  background: var(--accent-hot);
  color: #fff;
  animation: pulse 1s ease-in-out infinite;
}
.btn-stop-alarm:hover {
  background: #ff5577;
  box-shadow: 0 0 20px rgba(255, 51, 102, 0.4);
  animation: none;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.8; }
}

.btn-outline {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 0.7rem 1.6rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-radius: 8px;
  display: inline-block;
  transition: all 0.2s;
}
.btn-outline:hover { background: var(--accent); color: var(--bg); }

/* --- QUICK PRESETS --- */
.quick-presets {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
}

.preset {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--text-dim);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.4rem 0.9rem;
  cursor: pointer;
  transition: all 0.15s;
}
.preset:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--bg-hover);
}
.preset.active {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-glow);
}

/* --- SECTIONS --- */
.section {
  padding: 5rem 1.5rem;
}

.section-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 0.3rem;
}

.section-subtitle {
  font-size: 1rem;
  color: var(--text-dim);
  margin-bottom: 2.5rem;
}

.section-cta {
  margin-top: 2rem;
  text-align: center;
}

/* --- TIMER GRID (Popular Timers) --- */
.timer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 0.75rem;
}

.timer-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem 0.75rem;
  text-align: center;
  transition: all 0.2s;
  color: var(--text);
}
.timer-card:hover {
  border-color: var(--accent);
  background: var(--bg-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 24px rgba(0, 240, 255, 0.08);
  color: var(--text);
}

.card-duration {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 800;
  line-height: 1;
  color: var(--accent);
}

.card-unit {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-top: 0.15rem;
}

.card-use {
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
}

/* --- COLLECTIONS GRID --- */
.collections-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.25rem;
}

.collection-block {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  transition: border-color 0.2s;
}
.collection-block:hover { border-color: var(--border-glow); }

.collection-header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 1rem;
}
.collection-icon { font-size: 1.4rem; }
.collection-name {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
}

.collection-links {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.25rem 1rem;
  margin-bottom: 0.75rem;
}
.collection-links a {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-dim);
  padding: 0.3rem 0;
  transition: color 0.15s;
}
.collection-links a:hover { color: var(--accent); }

.collection-more {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent-dim);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.collection-more:hover { color: var(--accent); }

/* --- CURATED GRID --- */
.curated-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1rem;
}

.curated-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  display: block;
  color: var(--text);
  transition: all 0.2s;
  position: relative;
}
.curated-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 4px 30px rgba(0, 240, 255, 0.06);
  color: var(--text);
}

.curated-badge {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  background: var(--accent-glow);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  display: inline-block;
  margin-bottom: 0.75rem;
}

.curated-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.3rem;
}

.curated-card p {
  font-size: 0.85rem;
  color: var(--text-dim);
  line-height: 1.5;
}

/* --- EMBED SECTION --- */
.section-embed {
  background: var(--bg-raised);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.embed-block {
  display: flex;
  align-items: center;
  gap: 4rem;
}

.embed-text { flex: 1; }
.embed-text h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 0.75rem;
}
.embed-text p {
  color: var(--text-dim);
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
  max-width: 480px;
}

.embed-code-preview {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  margin-bottom: 1.5rem;
  overflow-x: auto;
}
.embed-code-preview code {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-dim);
  white-space: nowrap;
}

.embed-visual { flex: 0 0 260px; }
.embed-mock {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.4);
}

.mock-bar {
  background: var(--bg-card);
  padding: 8px 12px;
  display: flex;
  gap: 6px;
  border-bottom: 1px solid var(--border);
}
.mock-bar span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-muted);
}
.mock-bar span:first-child { background: var(--accent-hot); }
.mock-bar span:nth-child(2) { background: #f5a623; }
.mock-bar span:nth-child(3) { background: #7ed321; }

.mock-timer {
  font-family: var(--font-mono);
  font-size: 3.5rem;
  font-weight: 800;
  color: var(--accent);
  text-align: center;
  padding: 2.5rem 1.5rem;
  text-shadow: 0 0 20px var(--accent-glow);
}

/* --- ALL DURATIONS --- */
.duration-columns {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 2rem;
}

.dur-col h3 {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--accent-dim);
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.dur-col ul { list-style: none; }
.dur-col li { margin-bottom: 0.3rem; }
.dur-col a {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-dim);
  transition: color 0.15s;
}
.dur-col a:hover { color: var(--accent); }

/* --- FAQ --- */
.faq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 0.75rem;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  transition: border-color 0.2s;
}
.faq-item[open] { border-color: var(--border-glow); }

.faq-item summary {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 1rem 1.25rem;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--text);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--text-muted);
  transition: transform 0.2s;
}
.faq-item[open] summary::after {
  content: '−';
  color: var(--accent);
}

.faq-item div {
  padding: 0 1.25rem 1rem;
}
.faq-item p {
  font-size: 0.88rem;
  color: var(--text-dim);
  line-height: 1.6;
}

/* --- FOOTER --- */
.site-footer {
  background: var(--bg-raised);
  border-top: 1px solid var(--border);
  padding: 4rem 1.5rem 2rem;
}

.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.footer-brand { margin-bottom: 2.5rem; }
.footer-tagline {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.3rem;
}

.footer-links-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.footer-col h4 {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.75rem;
}
.footer-col a {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  padding: 0.2rem 0;
  transition: color 0.15s;
}
.footer-col a:hover { color: var(--accent); }

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-bottom p {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
}

.footer-langs {
  display: flex;
  gap: 1rem;
}
.footer-langs a {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
}
.footer-langs a:hover { color: var(--accent); }

/* --- ANIMATIONS --- */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

.hero-inner > * {
  animation: fadeUp 0.6s ease-out both;
}
.hero-headline   { animation-delay: 0s; }
.hero-tagline    { animation-delay: 0.1s; }
.timer-display   { animation-delay: 0.2s; }
.timer-controls  { animation-delay: 0.3s; }
.quick-presets   { animation-delay: 0.4s; }

/* --- RESPONSIVE --- */
@media (max-width: 768px) {
  .main-nav { display: none; }
  .mobile-menu-btn { display: flex; }

  .timer-ring { width: 220px; height: 220px; }

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

  .embed-block {
    flex-direction: column;
    gap: 2rem;
  }
  .embed-visual { flex: none; width: 100%; max-width: 300px; }

  .duration-columns {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }

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

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

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero { padding: 80px 1rem 40px; }
  .section { padding: 3rem 1rem; }
  .timer-grid { grid-template-columns: repeat(2, 1fr); }
  .duration-columns { grid-template-columns: 1fr; }
  .curated-grid { grid-template-columns: 1fr; }
  .footer-links-grid { grid-template-columns: 1fr; }
}

/* --- PRINT --- */
@media print {
  .site-header, .mobile-nav, .timer-controls, .quick-presets,
  .section-embed, .site-footer { display: none; }
  body { background: #fff; color: #000; }
  a { color: #000; }
}