:root {
    --bg-dark: #0b0b0f;
    --card-bg: rgba(22, 22, 29, 0.65);
    --card-border: rgba(255, 255, 255, 0.07);
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --accent-red: #ff3b47;
    --accent-red-hover: #ff1c2a;
    --accent-red-glow: rgba(255, 59, 71, 0.25);
    --accent-green: #10b981;
    --accent-green-hover: #059669;
    --accent-green-glow: rgba(16, 185, 129, 0.25);
    --font-header: 'Outfit', 'Plus Jakarta Sans', system-ui, sans-serif;
    --font-body: 'Plus Jakarta Sans', system-ui, sans-serif;
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: var(--font-body);
    min-height: 100vh;
    padding: 2rem 1rem;
    position: relative;
    overflow-x: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Glass background accents */
.glass-bg-accent-1 {
    position: absolute;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(255, 59, 71, 0.12) 0%, rgba(0,0,0,0) 70%);
    top: -100px;
    right: -100px;
    z-index: -1;
    filter: blur(40px);
}

.glass-bg-accent-2 {
    position: absolute;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(16, 185, 129, 0.05) 0%, rgba(0,0,0,0) 70%);
    bottom: -150px;
    left: -150px;
    z-index: -1;
    filter: blur(50px);
}

.app-container {
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
    z-index: 1;
}

/* Header */
.app-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.logo-area {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.5rem;
}

.logo-badge {
    background: linear-gradient(135deg, var(--accent-red) 0%, #ff6b74 100%);
    color: #fff;
    font-family: var(--font-header);
    font-weight: 800;
    font-size: 0.75rem;
    padding: 0.25rem 0.6rem;
    border-radius: 6px;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 12px var(--accent-red-glow);
}

.app-header h1 {
    font-family: var(--font-header);
    font-weight: 800;
    font-size: 2.5rem;
    letter-spacing: -0.5px;
}

.accent-text {
    background: linear-gradient(90deg, var(--accent-red) 0%, #ff6b74 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 300;
    max-width: 600px;
    margin: 0.5rem auto 0;
    line-height: 1.5;
}

/* Card layout */
.card {
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

/* Config Card */
.input-group-row {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    align-items: flex-end;
}

.input-field-wrapper {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.url-field {
    flex: 2 1 350px;
}

.proxy-field {
    flex: 1 1 200px;
}

label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    letter-spacing: 0.25px;
}

.info-tag {
    font-size: 0.7rem;
    background-color: rgba(255, 255, 255, 0.08);
    color: var(--text-secondary);
    padding: 0.1rem 0.4rem;
    border-radius: 4px;
    margin-left: 0.25rem;
    vertical-align: middle;
}

input[type="text"] {
    background-color: rgba(10, 10, 15, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.95rem;
    padding: 0.75rem 1rem;
    outline: none;
    transition: all 0.2s ease;
}

input[type="text"]:focus {
    border-color: var(--accent-red);
    box-shadow: 0 0 0 3px var(--accent-red-glow);
}

/* Buttons */
.btn {
    font-family: var(--font-header);
    font-weight: 600;
    font-size: 0.95rem;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.2s ease;
    height: 46px;
    min-width: 120px;
}

.btn-primary {
    background-color: var(--accent-red);
    color: #fff;
    box-shadow: 0 4px 14px var(--accent-red-glow);
}

.btn-primary:hover {
    background-color: var(--accent-red-hover);
    transform: translateY(-1px);
}

.btn-success {
    background-color: var(--accent-green);
    color: #fff;
    box-shadow: 0 4px 14px var(--accent-green-glow);
    width: 100%;
}

.btn-success:hover {
    background-color: var(--accent-green-hover);
    transform: translateY(-1px);
}

.loader-spinner {
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.proxy-note {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 1rem;
    padding: 0.75rem 1rem;
    background-color: rgba(255, 59, 71, 0.05);
    border-left: 3px solid var(--accent-red);
    border-radius: 0 8px 8px 0;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.proxy-note code {
    background-color: rgba(255, 255, 255, 0.08);
    padding: 0.1rem 0.3rem;
    border-radius: 4px;
    font-family: monospace;
    color: var(--text-primary);
}

.code-box-wrapper {
    background-color: rgba(0, 0, 0, 0.35);
    border: 1px solid rgba(255, 255, 255, 0.06);
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    margin: 0.25rem 0;
}

.code-box-wrapper code {
    background-color: transparent !important;
    padding: 0 !important;
    color: #34d399 !important;
}

.sub-text {
    font-size: 0.75rem;
    opacity: 0.8;
}

/* Results Card */
.video-meta-row {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.video-thumbnail-wrapper {
    flex: 0 0 200px;
    height: 112px;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.video-thumbnail-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.video-info-details {
    flex: 1 1 400px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.video-info-details h2 {
    font-family: var(--font-header);
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    line-height: 1.3;
}

.meta-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.tag {
    font-size: 0.75rem;
    font-weight: 600;
    background-color: rgba(255, 255, 255, 0.07);
    color: var(--text-secondary);
    padding: 0.25rem 0.6rem;
    border-radius: 6px;
}

.video-desc-trunc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.4;
    max-height: 40px;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

/* Format Lists */
.formats-selection-row {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.format-select-column {
    flex: 1 1 350px;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    transition: opacity 0.2s ease;
}

.format-select-column h3 {
    font-family: var(--font-header);
    font-size: 0.95rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.optional-lbl {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 400;
    text-transform: none;
}

.format-list-wrapper {
    background-color: rgba(10, 10, 15, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 10px;
    overflow: hidden;
}

.format-select-list {
    width: 100%;
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.85rem;
    padding: 0.5rem;
    min-height: 130px;
    max-height: 160px;
}


.format-select-list option {
    padding: 0.6rem 0.8rem;
    border-radius: 6px;
    margin-bottom: 0.25rem;
    background-color: transparent;
    cursor: pointer;
    border-left: 2px solid transparent;
}

.format-select-list option:hover {
    background-color: rgba(255, 255, 255, 0.04);
}

.format-select-list option:checked {
    background-color: rgba(255, 59, 71, 0.12) !important;
    color: var(--text-primary);
    border-left-color: var(--accent-red);
}

/* Footer Action area */
.action-footer {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

/* Download Mode Selector */
.mode-selector-wrapper {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.mode-label {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.mode-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.mode-btn {
    font-family: var(--font-body);
    font-size: 0.82rem;
    font-weight: 600;
    padding: 0.45rem 0.9rem;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.18s ease;
    white-space: nowrap;
}

.mode-btn:hover {
    background-color: rgba(255, 255, 255, 0.09);
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.2);
}

.mode-btn.active {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.2) 0%, rgba(16, 185, 129, 0.1) 100%);
    border-color: var(--accent-green);
    color: #34d399;
    box-shadow: 0 0 10px rgba(16, 185, 129, 0.15);
}


/* Toggle Switch */
.toggle-switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(255, 255, 255, 0.15);
    transition: .3s;
    border-radius: 24px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: .3s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: var(--accent-green);
}

input:checked + .slider:before {
    transform: translateX(20px);
}

/* Operation Progress */
.progress-card h3 {
    font-family: var(--font-header);
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 1.25rem;
}

.progress-bars-container {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    margin-bottom: 1.5rem;
}

.progress-row {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.progress-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.progress-percent, .progress-status {
    color: var(--text-primary);
}

.progress-bar-track {
    width: 100%;
    height: 10px;
    background-color: rgba(255, 255, 255, 0.08);
    border-radius: 5px;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-red) 0%, #ff6b74 100%);
    border-radius: 5px;
    transition: width 0.1s ease;
}

/* Striped Progress for FFmpeg */
.progress-striped {
    background-image: linear-gradient(45deg, rgba(255,255,255,0.05) 25%, transparent 25%, transparent 50%, rgba(255,255,255,0.05) 50%, rgba(255,255,255,0.05) 75%, transparent 75%, transparent);
    background-size: 40px 40px;
}

.progress-bar-fill.progress-animated {
    background: linear-gradient(90deg, var(--accent-green) 0%, #34d399 100%);
    animation: progress-bar-stripes 2s linear infinite;
}

/* Console output log */
.log-console-wrapper {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.log-console-wrapper h4 {
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 700;
}

.log-console {
    background-color: rgba(0, 0, 0, 0.45);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    color: #e5e7eb;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.8rem;
    padding: 1rem;
    max-height: 200px;
    overflow-y: auto;
    white-space: pre-wrap;
    word-break: break-all;
    line-height: 1.4;
}

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

@keyframes progress-bar-stripes {
    0% { background-position: 0 0; }
    100% { background-position: 40px 0; }
}

.hidden {
    display: none !important;
}

@media (max-width: 600px) {
    body {
        padding: 1rem;
    }
    .card {
        padding: 1rem;
    }
    .action-footer {
        flex-direction: column;
        align-items: stretch;
    }
}