/* Video Downloader Styles */

:root {
    --color-bg: #0f1419;
    --color-surface: #1a1f26;
    --color-surface-hover: #242b35;
    --color-border: #2f3843;
    --color-text: #e7e9ea;
    --color-text-muted: #8b98a5;
    --color-primary: #1d9bf0;
    --color-primary-hover: #1a8cd8;
    --color-success: #00ba7c;
    --color-error: #f4212e;
    --color-warning: #ffad1f;

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;

    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;

    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

body {
    font-family: var(--font-family);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.5;
    min-height: 100vh;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.container {
    max-width: 600px;
    margin: 0 auto;
    padding: var(--spacing-lg);
}

/* Header */
.header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.header__title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.header__subtitle {
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

/* Form Section */
.form-section {
    margin-bottom: var(--spacing-xl);
}

.download-form {
    width: 100%;
}

.input-group {
    display: flex;
    gap: var(--spacing-sm);
}

.url-input {
    flex: 1;
    padding: var(--spacing-md);
    font-size: 1rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    color: var(--color-text);
    outline: none;
    transition: border-color 0.2s;
}

.url-input:focus {
    border-color: var(--color-primary);
}

.url-input::placeholder {
    color: var(--color-text-muted);
}

.submit-btn {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 1rem;
    font-weight: 600;
    background: var(--color-primary);
    color: white;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: background 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 120px;
}

.submit-btn:hover:not(:disabled) {
    background: var(--color-primary-hover);
}

.submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid transparent;
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.form-error {
    margin-top: var(--spacing-sm);
    color: var(--color-error);
    font-size: 0.9rem;
}

/* Storage Section */
.storage-section {
    margin-bottom: var(--spacing-lg);
}

.storage-bar {
    height: 6px;
    background: var(--color-surface);
    border-radius: var(--radius-sm);
    overflow: hidden;
    margin-bottom: var(--spacing-xs);
}

.storage-bar__fill {
    height: 100%;
    background: var(--color-primary);
    border-radius: var(--radius-sm);
    transition: width 0.3s ease;
    width: 0%;
}

.storage-bar__fill--warning {
    background: var(--color-warning);
}

.storage-bar__fill--critical {
    background: var(--color-error);
}

.storage-text {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    text-align: center;
}

/* Section Titles */
.section-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Download Card */
.download-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.download-card--active {
    border-color: var(--color-primary);
}

.download-card--mine {
    border-color: var(--color-success);
}

.download-card__header {
    margin-bottom: var(--spacing-md);
}

.download-card__title {
    font-weight: 600;
    word-break: break-word;
}

.download-card__meta {
    display: flex;
    gap: var(--spacing-md);
    font-size: 0.9rem;
    color: var(--color-text-muted);
    margin-top: var(--spacing-sm);
}

/* Progress Bar */
.progress-bar {
    height: 8px;
    background: var(--color-bg);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.progress-bar__fill {
    height: 100%;
    background: var(--color-primary);
    border-radius: var(--radius-sm);
    transition: width 0.3s ease;
    width: 0%;
}

/* Queue List */
.queue-list,
.completed-list {
    list-style: none;
}

.queue-item,
.completed-item {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.queue-item__position {
    font-weight: 600;
    color: var(--color-text-muted);
}

.queue-item__time {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

/* Completed Item */
.completed-item {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.completed-item__info {
    width: 100%;
}

.completed-item__title {
    font-weight: 600;
    word-break: break-word;
    margin-bottom: var(--spacing-xs);
}

.completed-item__meta {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    display: flex;
    gap: var(--spacing-md);
}

.completed-item__actions {
    width: 100%;
    display: flex;
    gap: var(--spacing-sm);
}

.download-btn {
    flex: 1;
    display: block;
    padding: var(--spacing-md);
    font-size: 1rem;
    font-weight: 600;
    background: var(--color-success);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    text-align: center;
    text-decoration: none;
    transition: opacity 0.2s;
}

.download-btn:hover {
    opacity: 0.9;
}

.delete-btn {
    padding: var(--spacing-md);
    font-size: 1rem;
    font-weight: 600;
    background: transparent;
    color: var(--color-error);
    border: 1px solid var(--color-error);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background 0.2s, color 0.2s;
}

.delete-btn:hover {
    background: var(--color-error);
    color: white;
}

/* Status badges */
.status-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.8rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    text-transform: uppercase;
}

.status-badge--queued {
    background: var(--color-warning);
    color: black;
}

.status-badge--downloading {
    background: var(--color-primary);
    color: white;
}

.status-badge--complete {
    background: var(--color-success);
    color: white;
}

.status-badge--failed {
    background: var(--color-error);
    color: white;
}

/* Active section */
.active-section,
.queue-section,
.my-download-section,
.completed-section {
    margin-bottom: var(--spacing-xl);
}

/* Footer */
.footer {
    text-align: center;
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-border);
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

.footer p {
    margin-bottom: var(--spacing-sm);
}

.footer a {
    color: var(--color-primary);
    text-decoration: none;
}

.footer a:hover {
    text-decoration: underline;
}

/* Responsive */
@media (max-width: 480px) {
    .container {
        padding: var(--spacing-md);
    }

    .input-group {
        flex-direction: column;
    }

    .submit-btn {
        width: 100%;
    }

    .download-card__meta {
        flex-wrap: wrap;
    }
}