:root {
    --clr1: #09203F;
    --clr2: #537895;
    --clr3: #09203F;
    --clr4: #537895;
    --btn-bg: rgba(255, 255, 255, 0.85);
    --btn-shadow: rgba(0, 0, 0, 0.15);
    --input-bg: rgba(255, 255, 255, 0.7);
    --input-shadow: rgba(0, 0, 0, 0.05);
    --radius: 6px;
    --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --btn-gap: 0.75rem;
}

html, body { height: 100%; margin: 0; padding: 0; }

body {
    font-family: var(--font);
    min-height: 100vh;
    background: linear-gradient(45deg, var(--clr1), var(--clr2), var(--clr3), var(--clr4));
    background-size: 400% 400%;
    animation: gradientBG 15s ease infinite;
    display: flex;
    flex-direction: column;
    align-items: center;
    color: #2b2b2b;
    overflow-y: auto;
}

@keyframes gradientBG {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.header, .container {
    width: min(1100px, 94vw);
    background: rgba(255, 255, 255, 0.311);
    border-radius: var(--radius);
    backdrop-filter: blur(15px);
    box-shadow: 0 8px 32px rgba(0,0,0,0.08);
    padding: 1.5rem;
    margin: 1rem;
    text-align: center;
}

.header h1 { 
    margin: 0 0 .35rem 0; 
    color: #000;
    font-size: 2rem;
}

.header h2 { 
    margin: 0; 
    font-weight: 500; 
    opacity: .9; 
    color: #000;
    font-size: 1.2rem;
}

button, select {
    background: var(--btn-bg);
    border: none;
    border-radius: var(--radius);
    padding: 0.6rem 1.2rem;
    font-size: 1rem;
    color: #333;
    cursor: pointer;
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
    box-shadow: 4px 4px 8px var(--btn-shadow), -4px -4px 8px #fff;
}

button:hover, select:hover {
    transform: translateY(-2px);
    background: rgba(255,255,255,1);
    box-shadow: 6px 6px 12px var(--btn-shadow), -6px -6px 12px #fff;
}

button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

#drop-zone {
    border: 2px dashed rgba(255,255,255,0.9);
    border-radius: var(--radius);
    padding: 4rem 2rem;
    text-align: center;
    color: #fff;
    font-size: 1.1rem;
    transition: background .3s, border-color .3s;
    background: rgba(255,255,255,0.1);
    margin: 1.25rem auto;
    cursor: pointer;
}

#drop-zone.dragover {
    background: rgba(255,255,255,0.2);
    border-color: #fff;
}

.controls {
    display: flex;
    flex-wrap: wrap;
    gap: var(--btn-gap);
    justify-content: center;
    align-items: center;
    margin: 1.25rem 0;
}

.controls label {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    background: rgba(255,255,255,0.65);
    border-radius: var(--radius);
    padding: .45rem .75rem;
    box-shadow: inset 4px 4px 8px var(--input-shadow), inset -4px -4px 8px #fff;
    color: #333;
}

select {
    background: var(--input-bg);
    border: none;
    border-radius: var(--radius);
    box-shadow: inset 4px 4px 8px var(--input-shadow), inset -4px -4px 8px #fff;
    padding: .6rem .8rem;
  min-width: 200px;
    color: #333;
}

.video-list {
    margin: 2rem 0;
    display: grid;
    gap: 1rem;
}

.video-item {
    background: rgba(255,255,255,0.9);
    border-radius: var(--radius);
    padding: 1rem;
    display: grid;
    grid-template-columns: auto 1fr auto auto;
    gap: 1rem;
    align-items: center;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.video-preview {
    width: 120px;
    height: 80px;
    background: #000;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 2rem;
}

.video-info {
    text-align: left;
}

.video-info .name {
    font-weight: bold;
    color: #333;
    margin-bottom: .25rem;
}

.video-info .details {
    font-size: 0.85rem;
    color: #666;
}

.status-badge {
    padding: .4rem .8rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: bold;
    white-space: nowrap;
}

.status-ready { background: #e3f2fd; color: #1976d2; }
.status-processing { background: #fff3e0; color: #f57c00; }
.status-complete { background: #e8f5e8; color: #388e3c; }

.btn-small {
    padding: .4rem .8rem;
    font-size: 0.9rem;
}

.btn-danger {
    background: linear-gradient(135deg, #ff416c, #ff4b2b);
    color: white;
}

.btn-danger:hover {
    background: linear-gradient(135deg, #ff4b2b, #ff416c);
}

.download-section {
    margin-top: 2rem;
    padding: 1.5rem;
    background: rgba(255,255,255,0.9);
    border-radius: var(--radius);
    display: none;
}

.download-section.show {
    display: block;
}

.download-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    margin: .5rem 0;
    background: rgba(255,255,255,0.5);
    border-radius: var(--radius);
}

.progress-container {
    width: 100%;
    height: 8px;
    background: rgba(0,0,0,0.1);
    border-radius: 4px;
    overflow: hidden;
    margin: 1rem 0;
    display: none;
}

.progress-container.show {
    display: block;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, #667eea, #764ba2);
    width: 0%;
    transition: width 0.3s ease;
}

.contact {
    position: fixed;
    bottom: 1rem;
  left: 90%;
    transform: translateX(-50%);
    background: var(--btn-bg);
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius);
    text-decoration: none;
    color: #333;
    font-weight: bold;
    opacity: 0;
    animation: slideUpFadeIn 0.8s ease-out forwards;
    transition: transform 0.3s ease, background 0.3s ease;
}

@keyframes slideUpFadeIn {
    from { opacity: 0; transform: translateX(-50%) translateY(20px); }
    to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

.contact:hover {
    transform: translateX(-50%) translateY(-3px);
    background: rgba(255, 255, 255, 1);
}

.hidden { display: none !important; }

@media (max-width: 768px) {
    .video-item {
    grid-template-columns: 1fr;
    text-align: center;
    }
    
    .video-preview {
    margin: 0 auto;
    }

  .contact {
    left: 50%;
  }

  select {
    min-width: 140px;
  }
}