/* =============================================
   X / Twitter Video Downloader — style.css
   ============================================= */

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

:root {
  --bg:       #000000;
  --surface:  #0f0f0f;
  --card:     #16181c;
  --border:   #2f3336;
  --x-blue:   #1d9bf0;
  --muted:    #71767b;
  --text:     #e7e9ea;
  --green:    #00ba7c;
}

/* ── Base ── */
body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Space Grotesk', sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 2rem 1rem 4rem;
}

body::before {
  content: '';
  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: 40px 40px;
  pointer-events: none;
  z-index: 0;
}

/* ── Layout ── */
.wrapper {
  position: relative;
  width: 100%;
  max-width: 580px;
  z-index: 1;
}

/* ── Top Bar ── */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2.5rem;
  animation: fadeIn 0.5s ease both;
}

.x-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.x-icon {
  width: 36px;
  height: 36px;
  background: #fff;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.x-icon svg { width: 22px; height: 22px; }

.brand-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.02em;
}

.brand-sub {
  font-size: 0.72rem;
  color: var(--muted);
  font-weight: 400;
}

.free-badge {
  background: rgba(0,186,124,0.1);
  border: 1px solid rgba(0,186,124,0.25);
  color: var(--green);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.3rem 0.75rem;
  border-radius: 100px;
}

/* ── Hero ── */
.hero {
  text-align: center;
  margin-bottom: 2rem;
  animation: fadeIn 0.5s 0.1s ease both;
}

.hero h1 {
  font-size: clamp(2rem, 6vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.1;
  color: #fff;
  margin-bottom: 0.6rem;
}

.hero h1 span {
  background: linear-gradient(90deg, #fff 0%, #888 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  color: var(--muted);
  font-size: 0.92rem;
}

/* ── Supported Badges ── */
.supported {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
  animation: fadeIn 0.5s 0.15s ease both;
}

.sup-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 0.35rem 0.9rem 0.35rem 0.5rem;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text);
}

.sup-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 6px var(--green);
  animation: pulse 2s ease-in-out infinite;
}

/* ── Card ── */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.5rem;
  margin-bottom: 1rem;
  animation: slideUp 0.5s 0.2s ease both;
}

.card-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.75rem;
}

/* ── URL Input ── */
.input-wrap {
  position: relative;
  margin-bottom: 0.75rem;
}

.url-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
  pointer-events: none;
}

.url-icon svg { width: 16px; height: 16px; display: block; }

.url-input {
  width: 100%;
  background: var(--bg);
  border: 1.5px solid var(--border);
  border-radius: 10px;
  padding: 0.85rem 3rem 0.85rem 2.75rem;
  color: var(--text);
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.2s;
}

.url-input:focus { border-color: var(--x-blue); }
.url-input::placeholder { color: var(--muted); }

.clear-btn {
  position: absolute;
  right: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  padding: 0.2rem;
  display: none;
  transition: color 0.15s;
}

.clear-btn:hover { color: var(--text); }
.clear-btn svg { width: 16px; height: 16px; display: block; }

/* ── Fetch Button ── */
.fetch-btn {
  width: 100%;
  background: #fff;
  color: #000;
  border: none;
  border-radius: 10px;
  padding: 0.85rem;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.15s, transform 0.15s;
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.fetch-btn:hover { background: #e7e9ea; transform: translateY(-1px); }
.fetch-btn:active { transform: translateY(0); }
.fetch-btn:disabled { opacity: 0.4; cursor: not-allowed; transform: none; }
.fetch-btn svg { width: 17px; height: 17px; }

/* ── Error Box ── */
.error-box {
  display: none;
  background: rgba(244,33,46,0.08);
  border: 1px solid rgba(244,33,46,0.2);
  border-radius: 10px;
  padding: 0.75rem 1rem;
  font-size: 0.85rem;
  color: #f4212e;
  margin-top: 0.75rem;
}

.error-box.show { display: block; animation: fadeIn 0.3s ease; }

/* ── Loader / Skeleton ── */
.loader { display: none; }
.loader.show { display: block; animation: fadeIn 0.3s ease; }

.tweet-skeleton {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  margin-bottom: 1rem;
}

.skel {
  background: linear-gradient(90deg, var(--border) 25%, #2a2d31 50%, var(--border) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.4s infinite;
  border-radius: 6px;
}

.skel-avatar  { width: 40px; height: 40px; border-radius: 50%; flex-shrink: 0; }
.skel-lines   { flex: 1; display: flex; flex-direction: column; gap: 0.5rem; padding-top: 0.3rem; }
.skel-line    { height: 12px; }
.skel-video   { width: 100%; height: 160px; border-radius: 12px; margin-top: 0.5rem; }
.loader-text  { font-size: 0.82rem; color: var(--muted); }

/* ── Results ── */
.results { display: none; }
.results.show { display: block; animation: slideUp 0.4s ease; }

/* Tweet preview card */
.tweet-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem;
  margin-bottom: 1rem;
}

.tweet-header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.75rem;
}

.avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
  background: var(--border);
}

.avatar img { width: 100%; height: 100%; object-fit: cover; }

.tweet-user strong { font-size: 0.9rem; font-weight: 700; color: #fff; display: block; }
.tweet-user span   { font-size: 0.78rem; color: var(--muted); }

.x-verified { margin-left: auto; color: var(--x-blue); }
.x-verified svg { width: 18px; height: 18px; }

.tweet-text {
  font-size: 0.88rem;
  line-height: 1.55;
  color: var(--text);
  margin-bottom: 0.85rem;
}

.tweet-thumb {
  width: 100%;
  height: 170px;
  border-radius: 10px;
  overflow: hidden;
  background: var(--border);
  position: relative;
}

.tweet-thumb img { width: 100%; height: 100%; object-fit: cover; }

.play-badge {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.4);
}

.play-badge svg {
  width: 44px;
  height: 44px;
  color: #fff;
  filter: drop-shadow(0 2px 8px rgba(0,0,0,0.5));
}

.tweet-stats {
  display: flex;
  gap: 1.2rem;
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border);
}

.tweet-stat {
  font-size: 0.75rem;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.tweet-stat svg { width: 13px; height: 13px; }

/* ── Quality List ── */
.section-title {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.65rem;
}

.quality-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.quality-item { position: relative; }

.quality-item input[type="radio"] {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.quality-item label {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--bg);
  border: 1.5px solid var(--border);
  border-radius: 10px;
  padding: 0.75rem 1rem;
  cursor: pointer;
  transition: all 0.2s;
}

.quality-item label:hover { border-color: #555; }

.quality-item input:checked + label {
  border-color: var(--x-blue);
  background: rgba(29,155,240,0.05);
}

.radio-dot {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 2px solid var(--border);
  flex-shrink: 0;
  transition: all 0.15s;
  position: relative;
}

.quality-item input:checked + label .radio-dot { border-color: var(--x-blue); background: var(--x-blue); }
.quality-item input:checked + label .radio-dot::after {
  content: '';
  position: absolute;
  inset: 3px;
  border-radius: 50%;
  background: #fff;
}

.q-info  { flex: 1; }
.q-res   { font-size: 0.9rem; font-weight: 700; color: var(--text); display: block; }
.q-meta  { font-size: 0.75rem; color: var(--muted); }
.q-size  { font-size: 0.78rem; color: var(--muted); font-weight: 500; }

.hd-tag {
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  background: var(--x-blue);
  color: #fff;
  border-radius: 4px;
  padding: 0.1rem 0.4rem;
}

/* ── Download Button ── */
.dl-btn {
  width: 100%;
  background: var(--x-blue);
  border: none;
  border-radius: 10px;
  padding: 0.9rem;
  color: #fff;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.15s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  letter-spacing: -0.01em;
}

.dl-btn:hover { background: #1a8cd8; transform: translateY(-1px); }
.dl-btn:active { transform: translateY(0); }
.dl-btn svg { width: 16px; height: 16px; }

/* ── How To Section ── */
.howto {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.25rem 1.5rem;
  animation: slideUp 0.5s 0.3s ease both;
}

.howto-title {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1rem;
}

.steps { display: flex; flex-direction: column; gap: 0.7rem; }

.step { display: flex; align-items: flex-start; gap: 0.75rem; }

.step-num {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--border);
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 0.05rem;
}

.step-text { font-size: 0.85rem; color: var(--muted); line-height: 1.5; }
.step-text strong { color: var(--text); font-weight: 600; }

/* ── Footer ── */
footer {
  text-align: center;
  margin-top: 1.5rem;
  font-size: 0.75rem;
  color: var(--muted);
  line-height: 1.6;
  animation: fadeIn 0.5s 0.4s ease both;
}

/* ── Animations ── */
@keyframes fadeIn  { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes pulse   { 0%, 100% { opacity: 1; transform: scale(1); } 50% { opacity: 0.6; transform: scale(0.85); } }
@keyframes shimmer { to { background-position: -200% 0; } }
@keyframes spin    { to { transform: rotate(360deg); } }

/* ── Responsive ── */
@media (max-width: 400px) {
  .supported { flex-wrap: wrap; }
}