/* ═══════════════════════════════════════════════════════════
   TikTok Auto — TikTok Downloader Styles
   Dark theme, glassmorphism, TikTok-inspired gradients
   ═══════════════════════════════════════════════════════════ */

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

:root {
  --bg-primary: #050507;
  --bg-secondary: #0c0c10;
  --bg-card: rgba(255, 255, 255, 0.03);
  --bg-card-hover: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.06);
  --border-focus: rgba(255, 255, 255, 0.15);
  --text-primary: #f0f0f2;
  --text-secondary: #8b8b9e;
  --text-muted: #55556a;
  --accent-pink: #fe2c55;
  --accent-cyan: #25f4ee;
  --accent-purple: #6c5ce7;
  --gradient-main: linear-gradient(135deg, #fe2c55, #6c5ce7, #25f4ee);
  --gradient-btn: linear-gradient(135deg, #fe2c55 0%, #d42a72 50%, #6c5ce7 100%);
  --gradient-hd: linear-gradient(135deg, #fe2c55, #ff6b81);
  --gradient-sd: linear-gradient(135deg, #6c5ce7, #a29bfe);
  --gradient-audio: linear-gradient(135deg, #25f4ee, #55efc4);
  --shadow-glow: 0 0 60px rgba(254, 44, 85, 0.15);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --font: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
  -webkit-font-smoothing: antialiased;
}

/* ─── Animated Background ──────────────────────────────── */

.bg-grid {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

.bg-glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.4;
}

.bg-glow--1 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(254, 44, 85, 0.15), transparent 70%);
  top: -200px;
  left: -100px;
  animation: float-glow 20s ease-in-out infinite;
}

.bg-glow--2 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(108, 92, 231, 0.12), transparent 70%);
  top: 40%;
  right: -150px;
  animation: float-glow 25s ease-in-out infinite reverse;
}

.bg-glow--3 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(37, 244, 238, 0.08), transparent 70%);
  bottom: -100px;
  left: 30%;
  animation: float-glow 18s ease-in-out infinite 5s;
}

@keyframes float-glow {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(30px, -40px) scale(1.1); }
  50% { transform: translate(-20px, 20px) scale(0.95); }
  75% { transform: translate(40px, 30px) scale(1.05); }
}

/* ─── Header ───────────────────────────────────────────── */

.header {
  position: relative;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 40px;
  max-width: 1200px;
  margin: 0 auto;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.header__icon {
  width: 42px;
  height: 42px;
  background: var(--gradient-btn);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  box-shadow: 0 4px 20px rgba(254, 44, 85, 0.3);
}

.header__title {
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--text-primary);
}

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

.header__nav {
  display: flex;
  gap: 8px;
}

.header__badge {
  padding: 4px 12px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  border-radius: 100px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  text-transform: uppercase;
}

.header__badge--hd {
  background: rgba(254, 44, 85, 0.1);
  border-color: rgba(254, 44, 85, 0.2);
  color: var(--accent-pink);
}

.header__badge--nw {
  background: rgba(37, 244, 238, 0.08);
  border-color: rgba(37, 244, 238, 0.15);
  color: var(--accent-cyan);
}

/* ─── Main ─────────────────────────────────────────────── */

.main {
  position: relative;
  z-index: 10;
  max-width: 800px;
  margin: 0 auto;
  padding: 0 24px 80px;
}

/* ─── Hero ─────────────────────────────────────────────── */

.hero {
  text-align: center;
  padding: 80px 0 40px;
}

.hero__title {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -1.5px;
  margin-bottom: 16px;
}

.hero__title--gradient {
  display: block;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 500px;
  margin: 0 auto 40px;
  line-height: 1.6;
}

/* ─── Input Group ──────────────────────────────────────── */

.input-group {
  display: flex;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 6px 6px 6px 18px;
  gap: 12px;
  transition: var(--transition);
  backdrop-filter: blur(20px);
}

.input-group:focus-within {
  border-color: var(--border-focus);
  box-shadow: var(--shadow-glow);
}

.input-group__icon {
  color: var(--text-muted);
  flex-shrink: 0;
}

.input-group__input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  font-size: 0.95rem;
  font-family: var(--font);
  color: var(--text-primary);
  padding: 14px 0;
}

.input-group__input::placeholder {
  color: var(--text-muted);
}

.input-group__btn {
  position: relative;
  padding: 14px 28px;
  background: var(--gradient-btn);
  border: none;
  border-radius: var(--radius-md);
  color: white;
  font-family: var(--font);
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
  flex-shrink: 0;
  overflow: hidden;
}

.input-group__btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 30px rgba(254, 44, 85, 0.35);
}

.input-group__btn:active {
  transform: translateY(0);
}

.input-group__btn--loading .input-group__btn-text {
  opacity: 0;
}

.input-group__btn--loading .input-group__btn-loader {
  opacity: 1;
}

.input-group__btn-loader {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition);
}

.spinner {
  width: 20px;
  height: 20px;
  border: 2.5px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ─── Error ────────────────────────────────────────────── */

.error-msg {
  margin-top: 16px;
  font-size: 0.85rem;
  color: var(--accent-pink);
  min-height: 20px;
  transition: var(--transition);
}

/* ─── Result Card ──────────────────────────────────────── */

.result {
  margin-top: 40px;
  animation: slide-up 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slide-up {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.result__card {
  display: flex;
  gap: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 20px;
  backdrop-filter: blur(20px);
}

.result__preview {
  position: relative;
  flex-shrink: 0;
  width: 200px;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.result__cover {
  width: 100%;
  height: 280px;
  object-fit: cover;
  display: block;
}

.result__duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0, 0, 0, 0.75);
  color: white;
  font-size: 0.7rem;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 6px;
  backdrop-filter: blur(8px);
}

.result__info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-width: 0;
}

.result__author {
  display: flex;
  align-items: center;
  gap: 10px;
}

.result__avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--border);
}

.result__author-name {
  font-weight: 700;
  font-size: 0.9rem;
}

.result__author-handle {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.result__title {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ─── Stats ────────────────────────────────────────────── */

.result__stats {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.result__stat {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.result__stat svg {
  opacity: 0.5;
}

/* ─── Download Buttons ─────────────────────────────────── */

.result__downloads {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: auto;
}

.dl-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--radius-md);
  font-family: var(--font);
  font-size: 0.82rem;
  font-weight: 600;
  text-decoration: none;
  color: white;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
}

.dl-btn:hover {
  transform: translateY(-2px);
}

.dl-btn--hd {
  background: var(--gradient-hd);
  box-shadow: 0 4px 20px rgba(254, 44, 85, 0.25);
}

.dl-btn--hd:hover {
  box-shadow: 0 8px 30px rgba(254, 44, 85, 0.4);
}

.dl-btn--sd {
  background: var(--gradient-sd);
  box-shadow: 0 4px 20px rgba(108, 92, 231, 0.2);
}

.dl-btn--sd:hover {
  box-shadow: 0 8px 30px rgba(108, 92, 231, 0.35);
}

.dl-btn--audio {
  background: var(--gradient-audio);
  color: #050507;
  box-shadow: 0 4px 20px rgba(37, 244, 238, 0.15);
}

.dl-btn--audio:hover {
  box-shadow: 0 8px 30px rgba(37, 244, 238, 0.3);
}

.dl-btn__tag {
  font-size: 0.6rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  background: rgba(255, 255, 255, 0.2);
  padding: 2px 6px;
  border-radius: 4px;
}

.dl-btn--disabled {
  opacity: 0.3;
  pointer-events: none;
}

/* ─── Features Grid ────────────────────────────────────── */

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 16px;
  margin-top: 80px;
}

.feature {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  text-align: center;
  transition: var(--transition);
}

.feature:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-focus);
  transform: translateY(-4px);
}

.feature__icon {
  font-size: 1.8rem;
  margin-bottom: 12px;
}

.feature__title {
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.feature__desc {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ─── Footer ───────────────────────────────────────────── */

.footer {
  position: relative;
  z-index: 10;
  text-align: center;
  padding: 30px;
  font-size: 0.75rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
}

/* ─── Responsive ───────────────────────────────────────── */

@media (max-width: 640px) {
  .header {
    padding: 16px 20px;
  }

  .header__nav {
    display: none;
  }

  .hero {
    padding: 50px 0 30px;
  }

  .input-group {
    flex-direction: column;
    padding: 12px;
    gap: 8px;
  }

  .input-group__icon {
    display: none;
  }

  .input-group__input {
    width: 100%;
    padding: 12px;
    text-align: center;
  }

  .input-group__btn {
    width: 100%;
    padding: 14px;
  }

  .result__card {
    flex-direction: column;
  }

  .result__preview {
    width: 100%;
  }

  .result__cover {
    height: 200px;
    width: 100%;
  }

  .result__downloads {
    flex-direction: column;
  }

  .dl-btn {
    justify-content: center;
  }
}