:root {
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --secondary: #ec4899;
  --accent: #8b5cf6;
  --bg-dark: #0f172a;
  --text-light: #f8fafc;
  --text-dim: #94a3b8;
  --glass: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.1);
}

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

body {
  font-family: "Outfit", sans-serif;
  background: radial-gradient(circle at top right, #1e293b, #0f172a);
  background-attachment: fixed;
  color: var(--text-light);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: 2rem 0;
  overflow-x: hidden;
}

/* Background Blobs Removed for Performance */

/* Layout */
.container {
  width: 100%;
  max-width: 800px;
  padding: 2rem;
  position: relative;
  z-index: 10;
}

header {
  text-align: center;
  margin-bottom: 3rem;
}

.logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.8rem;
  margin-bottom: 0.5rem;
}

.logo-icon {
  font-size: 2.5rem;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 0 10px rgba(99, 102, 241, 0.3));
}

.logo h1 {
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: -1px;
  background: linear-gradient(to right, #fff, #94a3b8);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.tagline {
  color: var(--text-dim);
  font-size: 1.1rem;
  font-weight: 300;
}

/* Navigation Tabs */
.tabs-container {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.tab-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--glass-border);
  padding: 0.8rem 1.2rem;
  border-radius: 12px;
  color: var(--text-dim);
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 600;
  transition: all 0.2s ease;
}

.tab-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: white;
}

.tab-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

/* Card Styling */
.glass {
  background: var(--glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
}

.card {
  padding: 2.5rem;
  margin-bottom: 2rem;
}

.input-group {
  display: flex;
  gap: 12px;
  margin-bottom: 2rem;
  align-items: center;
  flex-wrap: nowrap;
  width: 100%;
}

.input-wrapper {
  flex: 1;
  min-width: 0;
  position: relative;
  display: flex;
  align-items: center;
}

.input-wrapper input[type="text"] {
  width: 100%;
  padding: 1rem 1.2rem;
  padding-right: 3.5rem;
  background: var(--bg-dark);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  color: white;
  font-family: inherit;
  font-size: 1rem;
  outline: none;
  transition: all 0.2s ease;
  height: 50px;
  display: block;
}

.icon-btn {
  position: absolute;
  right: 10px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  color: white;
  padding: 8px;
  width: 34px;
  height: 34px;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 5;
}

.input-wrapper input[type="text"]:focus {
  border-color: var(--primary);
  background: var(--bg-dark);
  box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2);
}

.icon-btn:hover {
  background: var(--primary);
  border-color: var(--primary);
}

.glass-select {
  flex: 0 0 auto;
  width: 160px;
  background: var(--bg-dark);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  height: 50px;
  padding: 0 1rem;
  color: white;
  font-family: inherit;
  font-size: 0.85rem;
  outline: none;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml;charset=UTF-8,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%2212%22%20height%3D%2212%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22rgba(255,255,255,0.6)%22%20stroke-width%3D%222%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Cpolyline%20points%3D%226%209%2012%2015%2018%209%22%3E%3C%2Fpolyline%3E%3C%2Fsvg%3E");
  background-repeat: no-repeat;
  background-position: right 0.8rem center;
  display: block;
}

.glass-select option {
  background: #1e293b;
  color: white;
}

button#convertBtn {
  background: linear-gradient(135deg, var(--primary), var(--primary-hover));
  border: none;
  border-radius: 12px;
  height: 50px;
  padding: 0 2rem;
  color: white;
  font-weight: 600;
  cursor: pointer;
  min-width: 130px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

@media (max-width: 600px) {
  .input-group {
    flex-wrap: wrap;
  }
  
  .input-wrapper {
    flex: 1 1 100%;
  }

  .glass-select {
    flex: 1 1 calc(50% - 6px);
    width: auto;
  }

  button#convertBtn {
    flex: 1 1 calc(50% - 6px);
    min-width: 0;
  }
}

button#convertBtn:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

button#convertBtn:active {
  transform: translateY(0);
}

/* Info Sections (FAQ & Changelog) */
.info-section {
  margin-top: 2rem;
  padding: 2rem;
  text-align: left;
}

.info-section h2 {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--primary);
}

.faq-item {
  margin-bottom: 1.5rem;
}

.faq-item h4 {
  color: var(--text-light);
  margin-bottom: 0.5rem;
  font-size: 1rem;
}

.faq-item p {
  color: var(--text-dim);
  font-size: 0.9rem;
  line-height: 1.5;
}

.change-item {
  display: flex;
  align-items: center;
  gap: 15px;
  margin-bottom: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.change-item:last-child {
  border-bottom: none;
}

.badge {
  background: var(--primary);
  color: white;
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  min-width: 60px;
  text-align: center;
}

.change-item p {
  color: var(--text-dim);
  font-size: 0.9rem;
}

/* Result Display */
#resultArea {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--glass-border);
}

.result-item {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.result-meta {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
}

.result-thumb {
  width: 120px;
  height: 120px;
  border-radius: 16px;
  object-fit: cover;
  background: #000;
  flex-shrink: 0;
}

.result-info {
  flex: 1;
}

.result-info h3 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.result-info p {
  font-size: 0.85rem;
  color: var(--text-dim);
}

.download-options {
  display: grid;
  gap: 10px;
}

.dl-link {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: rgba(255, 255, 255, 0.1);
  color: white;
  text-decoration: none;
  padding: 0.9rem;
  border-radius: 12px;
  font-weight: 600;
  transition: all 0.2s ease;
  border: 1px solid var(--glass-border);
}

.dl-link:hover {
  background: var(--primary);
  border-color: var(--primary);
}

.dl-link i {
  font-size: 1.1rem;
}


/* Footer */
footer {
  text-align: center;
  margin-top: 3rem;
  font-size: 0.9rem;
  color: var(--text-dim);
}

footer a {
  color: var(--text-light);
  text-decoration: none;
  font-weight: 600;
}

footer i {
  color: #ef4444;
}

/* Utils */
.hidden {
  display: none !important;
}

.error-msg {
  color: #f87171;
  font-size: 0.9rem;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px;
  background: rgba(248, 113, 113, 0.1);
  border-radius: 8px;
}

@media (max-width: 480px) {
  .container {
    padding: 1rem;
  }

  .logo h1 {
    font-size: 2.2rem;
  }

  .input-group {
    flex-direction: column;
    align-items: stretch;
  }

  .input-wrapper, .glass-select, button#convertBtn {
    width: 100%;
    flex: none;
  }

  button#convertBtn {
    padding: 1rem;
  }
}