@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=Syne:wght@700;800&display=swap');

:root {
  --bg: #f5f5f7;
  --bg-gradient: radial-gradient(circle at top, #fff0f3 0%, #f5f5f7 45%);
  --card: #ffffff;
  --card-border: rgba(0, 0, 0, 0.08);
  --card-glow: rgba(244, 63, 94, 0.06);

  --primary: #f43f5e;
  --primary-hover: #e11d48;
  --primary-glow: rgba(244, 63, 94, 0.2);

  --text: #18181b;
  --text-muted: #71717a;

  --success: #059669;
  --success-glow: rgba(5, 150, 105, 0.15);

  --warning: #d97706;
  --warning-bg: rgba(217, 119, 6, 0.08);
  --warning-border: rgba(217, 119, 6, 0.2);

  --radius: 18px;
  --radius-sm: 12px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  background: var(--bg);
  background-image: var(--bg-gradient);
  color: var(--text);
  font-family: 'Outfit', sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

header {
  height: 70px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid var(--card-border);
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 1px 6px rgba(0, 0, 0, 0.06);
}

.logo {
  font-family: 'Syne', sans-serif;
  font-size: 24px;
  font-weight: 800;
  letter-spacing: 0.5px;
  text-decoration: none;
  color: var(--text);
}

.logo span {
  color: var(--primary);
}

main {
  flex: 1;
  max-width: 620px;
  width: 100%;
  margin: 0 auto;
  padding: 40px 20px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 30px;
  backdrop-filter: blur(16px);
  box-shadow:
    0 4px 24px rgba(0, 0, 0, 0.07),
    0 1px 0 0 rgba(255, 255, 255, 0.9) inset,
    0 0 30px var(--card-glow);
  margin-bottom: 24px;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}

.card:hover {
  border-color: rgba(244, 63, 94, 0.2);
  box-shadow:
    0 8px 32px rgba(0, 0, 0, 0.1),
    0 1px 0 0 rgba(255, 255, 255, 0.9) inset,
    0 0 30px var(--card-glow);
}

h2 {
  font-family: 'Syne', sans-serif;
  font-size: 26px;
  font-weight: 800;
  margin-bottom: 10px;
  text-align: center;
  color: var(--text);
}

.subtitle {
  color: var(--text-muted);
  font-size: 14px;
  text-align: center;
  margin-bottom: 30px;
}

.input-group {
  margin-bottom: 20px;
}

.input-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.input-wrapper {
  position: relative;
}

input[type="text"] {
  width: 100%;
  background: #f9f9fb;
  border: 1px solid rgba(0, 0, 0, 0.1);
  border-radius: var(--radius-sm);
  padding: 15px 20px;
  color: var(--text);
  font-family: inherit;
  font-size: 15px;
  transition: var(--transition);
}

input[type="text"]:focus {
  outline: none;
  background: #ffffff;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(244, 63, 94, 0.1);
}

.btn-primary {
  width: 100%;
  background: linear-gradient(185deg, var(--primary), var(--primary-hover));
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  padding: 15px 24px;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  box-shadow: 0 4px 16px var(--primary-glow);
  transition: var(--transition);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px var(--primary-glow);
}

.btn-primary:active {
  transform: translateY(0);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(244, 63, 94, 0.07);
  color: #e11d48;
  font-size: 11px;
  font-weight: 700;
  padding: 6px 12px;
  border-radius: 99px;
  border: 1px solid rgba(244, 63, 94, 0.15);
  margin-bottom: 20px;
}

.filename {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 25px;
  word-break: break-word;
  color: var(--text);
}

.meta-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 30px;
}

.meta-item {
  background: #f9f9fb;
  border: 1px solid rgba(0, 0, 0, 0.07);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
}

.meta-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 4px;
}

.meta-value {
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
}

.alert-warning {
  background: var(--warning-bg);
  border: 1px solid var(--warning-border);
  color: var(--warning);
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  line-height: 1.5;
  margin-bottom: 24px;
  display: flex;
  gap: 10px;
  align-items: flex-start;
}

.download-grid {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.server-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #f9f9fb;
  border: 1px solid rgba(0, 0, 0, 0.07);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.server-btn::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--primary);
  opacity: 0.7;
}

.server-btn:hover {
  background: #fff5f7;
  border-color: rgba(244, 63, 94, 0.2);
  transform: translateX(4px);
  box-shadow: 0 4px 16px rgba(244, 63, 94, 0.08);
}

.server-info {
  display: flex;
  align-items: center;
  gap: 12px;
}

.server-icon-wrapper {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: rgba(244, 63, 94, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
}

.server-name {
  font-weight: 700;
  margin-bottom: 2px;
  color: var(--text);
}

.server-desc {
  font-size: 11px;
  color: var(--text-muted);
}

.server-arrow {
  color: var(--text-muted);
  opacity: 0.5;
  transition: var(--transition);
}

.server-btn:hover .server-arrow {
  color: var(--primary);
  opacity: 1;
  transform: translateX(4px);
}

.skeleton {
  animation: skeleton-loading 1.5s infinite linear;
}

@keyframes skeleton-loading {
  0%   { background-color: rgba(0, 0, 0, 0.04); }
  50%  { background-color: rgba(0, 0, 0, 0.09); }
  100% { background-color: rgba(0, 0, 0, 0.04); }
}

.skeleton-text {
  height: 16px;
  border-radius: 4px;
  margin-bottom: 12px;
}

.skeleton-title {
  height: 24px;
  width: 80%;
  border-radius: 6px;
  margin-bottom: 25px;
}

.skeleton-btn {
  height: 58px;
  border-radius: var(--radius-sm);
  margin-bottom: 14px;
}

footer {
  text-align: center;
  font-size: 12px;
  color: var(--text-muted);
  padding: 30px;
  border-top: 1px solid var(--card-border);
  background: rgba(255, 255, 255, 0.6);
}

.error-container {
  text-align: center;
  padding: 20px 0;
}

.error-icon {
  font-size: 48px;
  color: var(--primary);
  margin-bottom: 16px;
}

.error-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
}

.error-desc {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.source-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #f9f9fb;
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 99px;
  padding: 8px 18px;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 12px;
  font-weight: 500;
  transition: var(--transition);
}

.source-btn:hover {
  background: #fff0f3;
  border-color: rgba(244, 63, 94, 0.2);
  color: var(--primary);
  transform: translateY(-1px);
}

@media (max-width: 480px) {
  main { padding: 20px 14px; }
  .card { padding: 20px; }
  .meta-grid { grid-template-columns: 1fr; }
}