:root {
    --bg-main: #090d16;
    --bg-card: rgba(17, 24, 39, 0.75);
    --border-card: rgba(255, 255, 255, 0.08);
    --border-focus: rgba(139, 92, 246, 0.6);
    --accent-purple: #8b5cf6;
    --accent-purple-glow: rgba(139, 92, 246, 0.35);
    --accent-blue: #3b82f6;
    --accent-cyan: #06b6d4;
    --accent-green: #10b981;
    --accent-red: #ef4444;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --radius-lg: 18px;
    --radius-md: 12px;
    --radius-sm: 8px;
}

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

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 24px 16px;
    position: relative;
    overflow-x: hidden;
}

.bg-glow {
    position: fixed;
    top: -20%;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 600px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.18) 0%, rgba(59, 130, 246, 0.12) 40%, rgba(9, 13, 22, 0) 70%);
    pointer-events: none;
    z-index: 0;
}

.container {
    width: 100%;
    max-width: 680px;
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* Header */
.header {
    text-align: center;
    margin-bottom: 8px;
}

.logo-box {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 6px;
}

.logo-icon {
    font-size: 1.8rem;
    filter: drop-shadow(0 0 12px rgba(234, 179, 8, 0.8));
}

.logo-text {
    font-size: 2.2rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    font-family: 'JetBrains Mono', monospace;
}

.logo-text .highlight {
    color: var(--accent-purple);
    text-shadow: 0 0 20px var(--accent-purple-glow);
}

.badge {
    background: linear-gradient(135deg, var(--accent-purple), var(--accent-blue));
    color: #fff;
    font-size: 0.7rem;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.subtitle strong {
    color: var(--accent-cyan);
}

/* Cards */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-radius: var(--radius-lg);
    padding: 28px;
    box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.05);
    transition: all 0.3s ease;
}

/* Dropzone */
.dropzone {
    border: 2px dashed rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-md);
    padding: 36px 20px;
    text-align: center;
    cursor: pointer;
    background: rgba(255, 255, 255, 0.02);
    position: relative;
    transition: all 0.25s ease;
}

.dropzone:hover, .dropzone.dragover {
    border-color: var(--accent-purple);
    background: rgba(139, 92, 246, 0.06);
    box-shadow: 0 0 25px rgba(139, 92, 246, 0.2);
}

.file-input {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
    width: 100%;
    height: 100%;
}

.icon-circle {
    width: 58px;
    height: 58px;
    margin: 0 auto 14px;
    border-radius: 50%;
    background: rgba(139, 92, 246, 0.12);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(139, 92, 246, 0.25);
}

.upload-icon {
    width: 28px;
    height: 28px;
    stroke: var(--accent-purple);
}

.dropzone-title {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--text-primary);
}

.dropzone-desc {
    font-size: 0.88rem;
    color: var(--text-muted);
    margin-bottom: 14px;
}

.formats-pill {
    display: inline-flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 6px;
    background: rgba(0, 0, 0, 0.35);
    padding: 6px 14px;
    border-radius: 30px;
    font-size: 0.72rem;
    font-family: 'JetBrains Mono', monospace;
    color: var(--text-secondary);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.formats-pill span {
    font-weight: 600;
}

.formats-pill .limit {
    color: var(--accent-cyan);
    margin-left: 4px;
    border-left: 1px solid rgba(255, 255, 255, 0.15);
    padding-left: 8px;
}

.storage-info-pill {
    margin-top: 14px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 0.82rem;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.03);
    padding: 8px 16px;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.06);
    width: 100%;
    box-sizing: border-box;
}

.storage-info-pill strong {
    color: var(--accent-cyan);
}

/* File Selected Box */
.file-selected-box {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(139, 92, 246, 0.3);
    border-radius: var(--radius-md);
    padding: 16px;
}

.file-info-row {
    display: flex;
    align-items: center;
    gap: 14px;
    text-align: left;
}

.media-icon {
    font-size: 2rem;
}

.file-details {
    flex: 1;
    overflow: hidden;
}

.file-name {
    font-weight: 600;
    font-size: 0.95rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: var(--text-primary);
}

.file-meta {
    font-size: 0.8rem;
    color: var(--accent-cyan);
    margin-top: 3px;
    font-family: 'JetBrains Mono', monospace;
}

.btn-icon {
    background: rgba(255, 255, 255, 0.08);
    border: none;
    color: var(--text-secondary);
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    z-index: 10;
}

.btn-icon:hover {
    background: rgba(239, 68, 68, 0.2);
    color: var(--accent-red);
}

/* Parameters */
.params-box {
    margin-top: 22px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.param-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
}

.param-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.mult-value-tag {
    font-family: 'JetBrains Mono', monospace;
    font-weight: 700;
    color: var(--accent-purple);
    font-size: 1.1rem;
    background: rgba(139, 92, 246, 0.15);
    padding: 2px 8px;
    border-radius: 6px;
    border: 1px solid rgba(139, 92, 246, 0.3);
}

.preset-chips {
    display: flex;
    gap: 6px;
}

.chip {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-secondary);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    padding: 5px 12px;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.2s;
}

.chip:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.chip.active {
    background: var(--accent-purple);
    border-color: var(--accent-purple);
    color: #fff;
    box-shadow: 0 0 12px var(--accent-purple-glow);
}

.slider-wrapper {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.custom-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 6px;
    border-radius: 5px;
    background: rgba(255, 255, 255, 0.1);
    outline: none;
    cursor: pointer;
}

.custom-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--accent-purple);
    cursor: pointer;
    box-shadow: 0 0 10px var(--accent-purple-glow);
    transition: transform 0.15s ease;
}

.custom-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.range-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.72rem;
    color: var(--text-muted);
    font-family: 'JetBrains Mono', monospace;
}

/* Buttons */
.btn-primary {
    margin-top: 24px;
    width: 100%;
    background: linear-gradient(135deg, var(--accent-purple), var(--accent-blue));
    color: #fff;
    border: none;
    padding: 15px;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    box-shadow: 0 10px 20px -8px var(--accent-purple-glow);
    transition: all 0.25s ease;
    text-decoration: none;
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 14px 25px -6px var(--accent-purple-glow);
}

.btn-primary:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    padding: 12px 20px;
    border-radius: var(--radius-md);
    font-size: 0.92rem;
    font-weight: 500;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.2s;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.12);
}

.btn-ghost {
    background: transparent;
    border: 1px dashed rgba(255, 255, 255, 0.15);
    color: var(--text-secondary);
    padding: 12px 20px;
    border-radius: var(--radius-md);
    font-size: 0.92rem;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
}

/* Progress Stage */
.progress-card {
    text-align: center;
    padding: 10px 0;
}

.spinner-container {
    position: relative;
    width: 90px;
    height: 90px;
    margin: 0 auto 18px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.neon-spinner {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    border: 3px solid rgba(139, 92, 246, 0.15);
    border-top-color: var(--accent-purple);
    border-right-color: var(--accent-blue);
    animation: spin 1s linear infinite;
}

.timer-badge {
    position: absolute;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--accent-cyan);
}

.progress-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.progress-sub {
    font-size: 0.88rem;
    color: var(--text-muted);
    margin-bottom: 24px;
}

.progress-bar-track {
    width: 100%;
    height: 8px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 10px;
    overflow: hidden;
    position: relative;
}

.progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-purple), var(--accent-cyan));
    border-radius: 10px;
    transition: width 0.2s ease;
    box-shadow: 0 0 10px var(--accent-cyan);
}

.progress-stats {
    display: flex;
    justify-content: space-between;
    margin-top: 8px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.78rem;
    color: var(--text-muted);
}

.steps-list {
    margin-top: 24px;
    text-align: left;
    display: flex;
    flex-direction: column;
    gap: 10px;
    background: rgba(0, 0, 0, 0.25);
    padding: 16px;
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.04);
}

.step-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.88rem;
    color: var(--text-muted);
    transition: color 0.2s;
}

.step-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transition: all 0.2s;
}

.step-item.active {
    color: var(--text-primary);
    font-weight: 600;
}

.step-item.active .step-dot {
    background: var(--accent-purple);
    box-shadow: 0 0 8px var(--accent-purple);
    transform: scale(1.3);
}

.step-item.completed {
    color: var(--accent-green);
}

.step-item.completed .step-dot {
    background: var(--accent-green);
    box-shadow: 0 0 6px var(--accent-green);
}

#cancelBtn {
    margin-top: 22px;
}

/* Results Stage */
.result-header {
    text-align: center;
    margin-bottom: 20px;
}

.result-badge-success {
    display: inline-block;
    background: rgba(16, 185, 129, 0.15);
    color: var(--accent-green);
    border: 1px solid rgba(16, 185, 129, 0.3);
    font-weight: 700;
    font-size: 0.82rem;
    padding: 4px 14px;
    border-radius: 20px;
    margin-bottom: 8px;
}

.result-title {
    font-size: 1.3rem;
    font-weight: 700;
}

.expiration-banner {
    display: flex;
    align-items: center;
    gap: 14px;
    background: rgba(234, 179, 8, 0.08);
    border: 1px solid rgba(234, 179, 8, 0.25);
    border-radius: var(--radius-md);
    padding: 14px 18px;
    margin-bottom: 20px;
    text-align: left;
}

.expiration-banner .exp-icon {
    font-size: 1.6rem;
    flex-shrink: 0;
}

.expiration-banner .exp-text {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.expiration-banner .exp-title {
    font-size: 0.92rem;
    font-weight: 600;
    color: #fde047;
}

.expiration-banner .exp-date {
    font-family: 'JetBrains Mono', monospace;
    color: #ffffff;
    font-weight: 700;
    background: rgba(234, 179, 8, 0.2);
    padding: 1px 6px;
    border-radius: 4px;
}

.expiration-banner .exp-hint {
    font-size: 0.78rem;
    color: var(--text-muted);
    line-height: 1.3;
}

.expiration-banner.hdd-tier {
    background: rgba(59, 130, 246, 0.08);
    border-color: rgba(59, 130, 246, 0.25);
}

.expiration-banner.hdd-tier .exp-title {
    color: var(--accent-cyan);
}

.expiration-banner.hdd-tier .exp-title strong {
    color: #60a5fa;
}

.preview-container {
    background: rgba(0, 0, 0, 0.45);
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.08);
    overflow: hidden;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 220px;
    max-height: 420px;
}

.preview-box {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.result-media-img {
    max-width: 100%;
    max-height: 420px;
    object-fit: contain;
}

.result-media-video {
    width: 100%;
    max-height: 420px;
    outline: none;
    border-radius: var(--radius-md);
}

.result-meta-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    margin-bottom: 22px;
}

.meta-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-sm);
    padding: 10px 8px;
    text-align: center;
}

.meta-label {
    display: block;
    font-size: 0.72rem;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.meta-val {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--text-primary);
}

.result-actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

/* Error Stage */
.error-card {
    text-align: center;
    padding: 10px 0;
}

.error-icon {
    font-size: 3rem;
    margin-bottom: 12px;
}

.error-title {
    font-size: 1.25rem;
    color: var(--accent-red);
    margin-bottom: 8px;
}

.error-message {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 20px;
    line-height: 1.5;
    word-break: break-word;
}

/* Footer */
.footer {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.78rem;
}

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

@keyframes spin {
    to { transform: rotate(360deg); }
}

@media (max-width: 600px) {
    .card {
        padding: 20px 16px;
    }
    .result-meta-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}