/* ===========================================================
   YouTube Downloader — dark glassmorphism UI
   Font: IBM Plex Sans Thai (Cadson Demak) + IBM Plex Sans
   =========================================================== */

:root {
  --bg-0: #0c0a18;
  --bg-1: #150f28;
  --glass: rgba(255, 255, 255, 0.055);
  --glass-strong: rgba(255, 255, 255, 0.085);
  --border: rgba(255, 255, 255, 0.12);
  --border-soft: rgba(255, 255, 255, 0.08);
  --text: #f3f3f8;
  --muted: rgba(243, 243, 248, 0.58);
  --muted-2: rgba(243, 243, 248, 0.4);
  --accent: #ff2d55;
  --accent-2: #ff5e7e;
  --accent-glow: rgba(255, 45, 85, 0.45);
  --radius: 18px;
  --radius-sm: 12px;
  --shadow: 0 20px 60px -15px rgba(0, 0, 0, 0.6);
}

* { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  /* gradient อยู่ที่ root → เต็ม canvas รวม safe-area (Dynamic Island/notch) ไม่เป็นสีดำทึบ */
  background:
    radial-gradient(900px 600px at 12% -10%, rgba(255, 45, 85, 0.20), transparent 60%),
    radial-gradient(800px 600px at 95% 0%, rgba(120, 70, 255, 0.22), transparent 55%),
    radial-gradient(700px 700px at 50% 120%, rgba(0, 180, 220, 0.14), transparent 60%),
    linear-gradient(160deg, var(--bg-1), var(--bg-0));
  background-color: var(--bg-0);
  background-attachment: fixed;
}

body {
  margin: 0;
  /* 100vh บนมือถือใหญ่กว่าพื้นที่ที่เห็นจริง → เลื่อนได้นิดนึง; ใช้ 100dvh ให้พอดีจอ */
  min-height: 100vh;
  min-height: 100dvh;
  font-family: "IBM Plex Sans Thai", "IBM Plex Sans", system-ui, -apple-system, sans-serif;
  color: var(--text);
  line-height: 1.55;
  background: transparent;
  padding:
    calc(clamp(1rem, 4vw, 3rem) + env(safe-area-inset-top)) calc(1rem + env(safe-area-inset-right))
    calc(4rem + env(safe-area-inset-bottom)) calc(1rem + env(safe-area-inset-left));
  display: flex;
  justify-content: center;
}

.app {
  width: 100%;
  max-width: 640px;
}

/* ---------- Header ---------- */
.app-header {
  text-align: center;
  margin-bottom: 1.6rem;
}
.brand {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.55rem;
  font-weight: 600;
  font-size: clamp(1.4rem, 5vw, 2.05rem);
  letter-spacing: -0.02em;
  margin: 0;
}
.brand .logos { display: inline-flex; gap: 0.4rem; flex: none; }
.brand-text { white-space: nowrap; }
.brand-text .naja {
  background: linear-gradient(135deg, #25f4ee, #fe2c55);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-weight: 700;
}
.brand .logo {
  display: grid;
  place-items: center;
  width: 1.75em;
  height: 1.75em;
  border-radius: 0.5em;
  flex: none;
}
.brand .logo svg { width: 1.05em; height: 1.05em; fill: #fff; }
/* YouTube — แดง */
.brand .logo--yt {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 8px 22px -6px var(--accent-glow);
}
/* TikTok — ดำ + เงา cyan/แดง ตาม brand */
.brand .logo--tt {
  background: #0b0b0f;
  box-shadow: -2px 0 0 #25f4ee inset, 2px 0 0 #fe2c55 inset,
    0 8px 22px -6px rgba(37, 244, 238, 0.4);
}
.tagline {
  margin: 0.5rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

/* ---------- Glass card ---------- */
.card {
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  backdrop-filter: blur(22px) saturate(150%);
  -webkit-backdrop-filter: blur(22px) saturate(150%);
  box-shadow: var(--shadow);
  padding: clamp(1.1rem, 4vw, 1.6rem);
}
.card + .card { margin-top: 1.1rem; }

/* ---------- Search row ---------- */
.search {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}
.field {
  position: relative;
  flex: 1;
  min-width: 0;
}
.field .icon {
  position: absolute;
  left: 0.95rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted-2);
  pointer-events: none;
  display: flex;
}
.field .icon svg { width: 1.1rem; height: 1.1rem; }

input[type="text"],
input#url {
  width: 100%;
  padding: 0.85rem 2.9rem 0.85rem 2.7rem;
  font: inherit;
  font-size: 1rem;
  color: var(--text);
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}
input#url::placeholder { color: var(--muted-2); }
input#url:focus {
  border-color: var(--accent);
  background: rgba(0, 0, 0, 0.35);
  box-shadow: 0 0 0 4px var(--accent-glow);
}

/* ปุ่ม X ล้าง URL (สะดวกบนมือถือ) */
.clear-btn {
  position: absolute;
  right: 0.55rem;
  top: 50%;
  transform: translateY(-50%);
  width: 1.75rem;
  height: 1.75rem;
  padding: 0;
  display: grid;
  place-items: center;
  border: none;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.14);
  color: var(--text);
  cursor: pointer;
  transition: background 0.15s, transform 0.1s;
}
.clear-btn[hidden] { display: none; }
.clear-btn:hover { background: rgba(255, 255, 255, 0.24); }
.clear-btn:active { transform: translateY(-50%) scale(0.9); }
.clear-btn svg { width: 0.95rem; height: 0.95rem; }

/* ---------- Buttons ---------- */
.btn {
  appearance: none;
  font: inherit;
  font-weight: 600;
  font-size: 1rem;
  padding: 0.85rem 1.35rem;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 10px 28px -10px var(--accent-glow);
  transition: transform 0.12s ease, box-shadow 0.2s, filter 0.2s, opacity 0.2s;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}
.btn:hover { filter: brightness(1.08); box-shadow: 0 14px 34px -10px var(--accent-glow); }
.btn:active { transform: translateY(1px) scale(0.99); }
.btn:disabled {
  background: rgba(255, 255, 255, 0.1);
  color: var(--muted-2);
  box-shadow: none;
  cursor: not-allowed;
  filter: none;
}
.btn--block { width: 100%; justify-content: center; }

/* ---------- Result / info ---------- */
.info {
  margin-top: 0.2rem;
  animation: fade-up 0.45s ease both;
}
@keyframes fade-up {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

.media {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}
.media img {
  width: 168px;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-soft);
  flex: none;
  display: block;
}
.media .meta-block { min-width: 0; flex: 1; }
.media h3 {
  margin: 0.1rem 0 0.35rem;
  font-size: 1.08rem;
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: -0.01em;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.meta { color: var(--muted); font-size: 0.88rem; margin: 0; }
.error {
  color: #ff8fa3;
  background: rgba(255, 45, 85, 0.1);
  border: 1px solid rgba(255, 45, 85, 0.3);
  padding: 0.8rem 1rem;
  border-radius: var(--radius-sm);
  margin: 0;
}
.loading-text { color: var(--muted); margin: 0; }

/* ---------- Format selector row ---------- */
.row {
  display: flex;
  gap: 0.6rem;
  align-items: center;
  margin-top: 1.1rem;
  flex-wrap: wrap;
}
.row select,
select#fmtSel {
  flex: 1 1 0;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  text-overflow: ellipsis;
  padding: 0.8rem 2.4rem 0.8rem 1rem;
  font: inherit;
  font-size: 0.95rem;
  color: var(--text);
  background-color: rgba(0, 0, 0, 0.3);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23ffffff' stroke-opacity='0.5' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.9rem center;
  background-size: 1.1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  outline: none;
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
  transition: border-color 0.2s, box-shadow 0.2s;
}
select#fmtSel:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-glow);
}
select#fmtSel optgroup { color: var(--muted); background: var(--bg-1); font-style: normal; }
select#fmtSel option { color: var(--text); background: var(--bg-1); padding: 0.4rem; }

.note {
  margin-top: 0.9rem;
  font-size: 0.82rem;
  color: var(--muted-2);
  line-height: 1.6;
  display: flex;
  gap: 0.45rem;
  align-items: flex-start;
}
.note::before { content: "ℹ️"; flex: none; }

/* ---------- Progress ---------- */
.progress-wrap { margin-top: 1.2rem; display: none; }
.progress-wrap.active { display: block; animation: fade-up 0.35s ease both; }
.progress-bar {
  width: 100%;
  height: 26px;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--border-soft);
  border-radius: 13px;
  overflow: hidden;
  position: relative;
}
.progress-fill {
  height: 100%;
  width: 0%;
  border-radius: 13px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  background-size: 200% 100%;
  transition: width 0.3s ease;
  position: relative;
  overflow: hidden;
}
.progress-fill::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.35),
    transparent
  );
  transform: translateX(-100%);
  animation: shimmer 1.6s infinite;
}
@keyframes shimmer { to { transform: translateX(100%); } }
.progress-text {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.82rem;
  font-weight: 600;
  color: #fff;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.6);
}
.progress-meta {
  margin-top: 0.5rem;
  font-size: 0.82rem;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  flex-wrap: wrap;
}

/* ---------- Emoji rain ---------- */
.emoji-rain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 9999;
}
.emoji-drop {
  position: absolute;
  top: -2rem;
  font-size: 2rem;
  will-change: transform, opacity;
  animation: emoji-fall linear forwards;
}
@keyframes emoji-fall {
  0%   { transform: translateY(-10vh) rotate(0deg);   opacity: 0; }
  10%  { opacity: 1; }
  85%  { opacity: 1; }
  100% { transform: translateY(110vh) rotate(360deg); opacity: 0; }
}

/* ---------- Responsive ---------- */
@media (max-width: 560px) {
  .search { flex-direction: column; }
  .search .btn { width: 100%; justify-content: center; }
  .media { flex-direction: column; }
  .media img { width: 100%; }
  .row { flex-direction: column; align-items: stretch; }
  .row .btn { width: 100%; justify-content: center; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::after, *::before { animation: none !important; transition: none !important; }
}