/* Global Variables & Colors */
:root {
    --bg-primary: #0a0b16;
    --bg-surface: rgba(18, 20, 38, 0.65);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.15);
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --accent-color: #7c3aed; /* Violet */
    --accent-glow: rgba(124, 58, 237, 0.4);
    --success-color: #10b981; /* Emerald */
    --success-glow: rgba(16, 185, 129, 0.2);
    --error-color: #ef4444; /* Rose/Red */
    --warning-color: #f59e0b; /* Amber */
    --font-sans: 'Plus Jakarta Sans', 'Outfit', sans-serif;
    --card-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    --transition-speed: 0.3s;
}

/* Reset & Base Styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

/* Dynamic Ambient Glows */
.glass-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 50%, rgba(13, 15, 30, 0.8), var(--bg-primary));
    z-index: -3;
}

.glow-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(140px);
    z-index: -2;
    opacity: 0.45;
}

#orb-1 {
    width: 450px;
    height: 450px;
    background: var(--accent-color);
    top: -100px;
    left: -100px;
    animation: float-slow 15s infinite alternate;
}

#orb-2 {
    width: 500px;
    height: 500px;
    background: #06b6d4; /* Cyan */
    bottom: -150px;
    right: -100px;
    animation: float-slow 20s infinite alternate-reverse;
}

@keyframes float-slow {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(60px, 40px) scale(1.1); }
}

/* Container & Layout */
.app-container {
    width: 100%;
    max-width: 1200px;
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    z-index: 1;
}

/* Header */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(18, 20, 38, 0.4);
    border: 1px solid var(--border-color);
    padding: 1.25rem 2rem;
    border-radius: 20px;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: var(--card-shadow);
}

.brand {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.brand-logo {
    font-size: 2rem;
    background: linear-gradient(135deg, var(--accent-color), #06b6d4);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: flex;
    align-items: center;
    justify-content: center;
}

.brand-text h1 {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.025em;
    background: linear-gradient(to right, #ffffff, #d1d5db);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.brand-text p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 400;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    background: rgba(255, 255, 255, 0.05);
    padding: 0.5rem 1rem;
    border-radius: 9999px;
    border: 1px solid var(--border-color);
    font-size: 0.8rem;
    font-weight: 500;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.status-dot.online {
    background-color: var(--success-color);
    box-shadow: 0 0 8px var(--success-color);
}

/* Main Panels */
.app-main {
    display: grid;
    grid-template-columns: 1.1fr 1.3fr;
    gap: 2rem;
}

@media (max-width: 900px) {
    .app-main {
        grid-template-columns: 1fr;
    }
}

.glass-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 2.25rem;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: var(--card-shadow);
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    transition: border-color var(--transition-speed);
}

.glass-card:hover {
    border-color: var(--border-hover);
}

.section-title {
    font-size: 1.25rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: #ffffff;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.75rem;
}

.section-title i {
    color: var(--accent-color);
}

/* Form Styles */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

label {
    font-size: 0.9rem;
    font-weight: 600;
    color: #e5e7eb;
}

textarea, select, input[type="text"] {
    background: rgba(10, 11, 22, 0.5);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-primary);
    padding: 0.85rem 1rem;
    font-family: var(--font-sans);
    font-size: 0.95rem;
    outline: none;
    transition: all var(--transition-speed);
}

textarea::placeholder {
    color: #4b5563;
}

textarea:focus, select:focus, input[type="text"]:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 12px var(--accent-glow);
    background: rgba(10, 11, 22, 0.8);
}

textarea {
    resize: vertical;
    line-height: 1.5;
}

.directory-picker {
    display: flex;
    gap: 0.75rem;
}

.directory-picker input {
    flex: 1;
    cursor: default;
}

/* Buttons */
.btn-primary, .btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    font-family: var(--font-sans);
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 12px;
    border: none;
    cursor: pointer;
    transition: all var(--transition-speed);
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-color), #6d28d9);
    color: #ffffff;
    padding: 1.1rem;
    width: 100%;
    margin-top: auto;
    box-shadow: 0 4px 14px var(--accent-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(124, 58, 237, 0.6);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0 1.5rem;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--border-hover);
}

.options-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.25rem;
    transition: all var(--transition-speed);
}

.options-grid.has-quality {
    grid-template-columns: 1fr 1fr;
}

/* Empty State Queue */
.queue-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.queue-count {
    font-size: 0.85rem;
    font-weight: 600;
    background: var(--accent-color);
    color: #ffffff;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
}

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 4rem 1.5rem;
    color: var(--text-secondary);
    gap: 1rem;
    border: 2px dashed rgba(255, 255, 255, 0.05);
    border-radius: 18px;
}

.empty-state i {
    font-size: 3rem;
    color: rgba(255, 255, 255, 0.15);
    animation: pulse 2s infinite alternate;
}

@keyframes pulse {
    0% { transform: scale(1); }
    100% { transform: scale(1.08); opacity: 0.7; }
}

.empty-state h3 {
    color: #ffffff;
    font-weight: 600;
}

.empty-state p {
    font-size: 0.9rem;
    max-width: 280px;
}

/* Queue List & Cards */
.queue-list {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    max-height: 480px;
    overflow-y: auto;
    padding-right: 0.5rem;
}

/* Custom Scrollbar for Queue */
.queue-list::-webkit-scrollbar {
    width: 6px;
}
.queue-list::-webkit-scrollbar-track {
    background: transparent;
}
.queue-list::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 9999px;
}
.queue-list::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.2);
}

.queue-card {
    background: rgba(10, 11, 22, 0.4);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 0.85rem 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    position: relative;
    overflow: hidden;
    transition: all var(--transition-speed);
}

.queue-card:hover {
    border-color: rgba(255, 255, 255, 0.15);
    background: rgba(10, 11, 22, 0.6);
}

.queue-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--warning-color); /* Defaults to warning (pending/downloading) */
}

.queue-card.downloading::before {
    background: var(--accent-color);
}

.queue-card.completed::before {
    background: var(--success-color);
}

.queue-card.failed::before {
    background: var(--error-color);
}

.card-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
}

.card-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: #ffffff;
    line-height: 1.4;
    word-break: break-all;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-badge {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    padding: 0.25rem 0.6rem;
    border-radius: 6px;
    white-space: nowrap;
}

.card-badge.pending {
    background: rgba(245, 158, 11, 0.15);
    color: var(--warning-color);
}

.card-badge.downloading {
    background: rgba(124, 58, 237, 0.15);
    color: var(--accent-color);
}

.card-badge.completed {
    background: rgba(16, 185, 129, 0.15);
    color: var(--success-color);
}

.card-badge.failed {
    background: rgba(239, 68, 68, 0.15);
    color: var(--error-color);
}

/* Progress Section */
.progress-container {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.progress-track {
    background: rgba(255, 255, 255, 0.05);
    height: 6px;
    border-radius: 9999px;
    overflow: hidden;
}

.progress-bar {
    background: linear-gradient(to right, var(--accent-color), #06b6d4);
    height: 100%;
    width: 0%;
    border-radius: 9999px;
    transition: width 0.4s ease;
}

.queue-card.completed .progress-bar {
    background: var(--success-color);
}

.queue-card.failed .progress-bar {
    background: var(--error-color);
}

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

.card-details {
    display: flex;
    gap: 1.25rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
    border-top: 1px solid rgba(255, 255, 255, 0.04);
    padding-top: 0.6rem;
}

.card-details span {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.card-details i {
    color: rgba(255, 255, 255, 0.3);
}

/* Toast Notifications */
.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: rgba(18, 20, 38, 0.95);
    border: 1px solid var(--border-color);
    padding: 1rem 1.75rem;
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    transform: translateY(150%);
    opacity: 0;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    z-index: 9999;
    backdrop-filter: blur(10px);
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

.toast.success {
    border-color: var(--success-color);
}

.toast.success i {
    color: var(--success-color);
}

.toast.error {
    border-color: var(--error-color);
}

.toast.error i {
    color: var(--error-color);
}

/* ==========================================
   Format Selection Toggle Pills (Segmented Control)
   ========================================== */
.format-toggle-group {
    display: flex;
    gap: 0.5rem;
    background: rgba(10, 11, 22, 0.4);
    padding: 0.35rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.format-toggle-option {
    flex: 1;
    cursor: pointer;
    margin: 0;
}

.format-toggle-option input[type="radio"] {
    display: none; /* Hide default radio button */
}

.toggle-pill {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    transition: all var(--transition-speed);
    text-align: center;
    user-select: none;
}

.format-toggle-option input[type="radio"]:checked + .toggle-pill {
    background: linear-gradient(135deg, var(--accent-color), #6d28d9);
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(124, 58, 237, 0.3);
}

/* ==========================================
   Extra Mobile-Friendliness & Responsiveness
   ========================================== */
@media (max-width: 640px) {
    .app-container {
        padding: 1rem;
        gap: 1.25rem;
    }

    .app-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
        padding: 1.25rem;
    }

    .status-indicator {
        align-self: flex-start;
    }

    .glass-card {
        padding: 1.25rem;
        gap: 1.25rem;
        border-radius: 20px;
    }

    .brand-logo {
        font-size: 1.75rem;
    }

    .brand-text h1 {
        font-size: 1.25rem;
    }

    .options-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .directory-picker {
        flex-direction: column;
        gap: 0.5rem;
    }

    .directory-picker button {
        padding: 0.85rem;
        width: 100%;
    }

    .queue-list {
        max-height: 380px;
    }

    .queue-card {
        padding: 1rem;
    }

    .card-top {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }

    .card-badge {
        align-self: flex-start;
    }

    .toast {
        left: 1rem;
        right: 1rem;
        bottom: 1rem;
        justify-content: center;
    }
}

/* ==========================================
   Pagination Controls
   ========================================== */
.pagination-container {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1.25rem;
    padding-top: 1rem;
    margin-top: 0.25rem;
    border-top: 1px solid rgba(255, 255, 255, 0.04);
}

.btn-pagination {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    width: 34px;
    height: 34px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-speed);
}

.btn-pagination:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--border-hover);
    color: #ffffff;
}

.btn-pagination:disabled {
    opacity: 0.25;
    cursor: not-allowed;
}

.pagination-info {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
}

/* --- Login Overlay --- */
.login-overlay {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
}

.login-card {
    width: 100%;
    max-width: 380px;
    padding: 2.5rem 2rem;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
}

.login-card .brand-logo {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.login-card h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.login-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.login-card input {
    width: 100%;
    padding: 0.85rem 1rem;
    background: rgba(0, 0, 0, 0.25);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 1rem;
    outline: none;
    transition: border-color var(--transition-speed);
}

.login-card input:focus {
    border-color: var(--accent-color);
}

.login-card .btn-primary {
    width: 100%;
    margin-top: 0.25rem;
}

.login-error {
    color: var(--error-color);
    font-size: 0.85rem;
    min-height: 1.1rem;
}

/* --- Queue header actions --- */
.queue-header-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

#btn-clear-queue {
    padding: 0.4rem 0.85rem;
    font-size: 0.8rem;
}

/* --- Download link on completed cards --- */
.download-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    margin-top: 0.6rem;
    padding: 0.4rem 0.85rem;
    background: var(--success-glow);
    border: 1px solid var(--success-color);
    border-radius: 10px;
    color: var(--success-color);
    font-size: 0.8rem;
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-speed);
}

.download-link:hover {
    background: var(--success-color);
    color: #fff;
}

/* --- Per-item cancel / delete action --- */
.card-top-right {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-shrink: 0;
}

.card-action {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.3rem 0.6rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background: rgba(0, 0, 0, 0.2);
    color: var(--text-secondary);
    font-family: var(--font-sans);
    font-size: 0.72rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-speed);
}

.card-action:hover {
    color: #fff;
}

.card-action.cancel:hover {
    background: var(--warning-color);
    border-color: var(--warning-color);
}

.card-action.delete:hover {
    background: var(--error-color);
    border-color: var(--error-color);
}

.card-action:disabled {
    opacity: 0.5;
    cursor: default;
}