:root {
    --bg-color: #000000;
    --card-bg: #0a0a0a;
    --text-color: #ffffff;
    --text-muted: #888888;
    --accent: #333333;
    --accent-hover: #555555;
    --accent-color: #38bdf8;
    --danger: #cc0000;
    --success: #009900;
    --border-color: #222222;
    --font-family: 'Inter', system-ui, sans-serif;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* Navbar */
.navbar {
    background: rgba(30, 41, 59, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.brand {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-color);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Layout */
.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 1rem;
}

.page-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--text-color);
}

/* Grid Dashboard */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 0.5rem;
}

.card {
    background: var(--card-bg);
    border-radius: 0;
    padding: 0.75rem;
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    border: 1px solid var(--border-color);
    transition: transform 0.1s, box-shadow 0.1s, border-color 0.1s;
}

.card:not(.disabled):hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.5);
    border-color: var(--accent);
}

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

.card-icon {
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.card-icon svg {
    width: 24px;
    height: 24px;
}

.card-content h2 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.card-content p {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Forms & Inputs */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-muted);
    font-size: 0.875rem;
}

.input-control {
    width: 100%;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    color: var(--text-color);
    padding: 0.5rem 0.75rem;
    border-radius: 0;
    font-size: 0.9rem;
    font-family: inherit;
    transition: border-color 0.2s;
}

.input-control:focus {
    outline: none;
    border-color: var(--accent);
}

select.input-control {
    appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23888888' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 1em;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    background: var(--accent);
    color: #fff;
    border: 1px solid var(--border-color);
    padding: 0.5rem 1rem;
    border-radius: 0;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
    width: 100%;
}

.btn-secondary {
    background: var(--border-color);
    color: var(--text-color);
}

.btn-secondary:hover {
    background: #475569;
}

.btn:hover {
    background: var(--accent-hover);
}

.btn:active {
    transform: scale(0.98);
}

.btn-danger {
    background: var(--danger);
}
.btn-danger:hover {
    background: #dc2626;
}

.button-group {
    display: flex;
    gap: 1rem;
    flex-direction: column;
}

@media (min-width: 600px) {
    .button-group {
        flex-direction: row;
    }
    .btn {
        width: auto;
        flex: 1;
    }
}

/* Progress */
.progress-card {
    background: var(--card-bg);
    border-radius: 0;
    padding: 1.5rem;
    border: 1px solid var(--border-color);
    margin-top: 1.5rem;
    display: none;
}

.progress-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.75rem;
    font-size: 0.875rem;
}

.progress-title {
    font-weight: 500;
}

.progress-track {
    width: 100%;
    height: 8px;
    background: var(--bg-color);
    border-radius: 0;
    overflow: hidden;
    margin-bottom: 1rem;
}

.progress-fill {
    height: 100%;
    background: var(--accent);
    width: 0%;
    border-radius: 0;
    transition: width 0.3s ease;
}

#progressText {
    font-size: 0.875rem;
    color: var(--text-muted);
    word-break: break-all;
}

/* Status Messages */
.status {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 0;
    font-size: 0.875rem;
    display: none;
}

.status.error {
    background: rgba(239, 68, 68, 0.1);
    color: #fca5a5;
    border: 1px solid rgba(239, 68, 68, 0.2);
    display: block;
}

.status.success {
    background: rgba(16, 185, 129, 0.1);
    color: #6ee7b7;
    border: 1px solid rgba(16, 185, 129, 0.2);
    display: block;
}

/* Result Card (ytmusic) */
.result-card {
    padding: 0.5rem 1rem;
}

/* Desktop Compact Mode */
@media (min-width: 600px) {
    .container {
        padding: 0.25rem;
    }
    .card {
        padding: 0.25rem 0.5rem;
        gap: 0.25rem;
    }
    .result-card {
        padding: 0.25rem 0.5rem !important;
    }
    .page-title {
        font-size: 1.1rem;
        margin-bottom: 0.5rem;
    }
    .btn {
        padding: 0.25rem 0.5rem;
        font-size: 0.75rem;
    }
    .input-control {
        padding: 0.25rem 0.5rem;
        font-size: 0.8rem;
    }
    .card-icon {
        width: 32px;
        height: 32px;
    }
    .card-icon svg {
        width: 18px;
        height: 18px;
    }
    .card-content h2 {
        font-size: 0.95rem;
    }
    .card-content p {
        font-size: 0.75rem;
    }
    .form-group {
        margin-bottom: 0.5rem;
    }
}