/* style.css - Modern Premium UI with Glassmorphism and Dark Mode */

:root {
    /* Light Mode Palette - More vibrant and tailored */
    --primary-h: 224;
    --primary-s: 76%;
    --primary-l: 66%;
    --primary: hsl(var(--primary-h), var(--primary-s), var(--primary-l));
    --primary-dark: hsl(var(--primary-h), var(--primary-s), 50%);

    --secondary-h: 280;
    --secondary-s: 70%;
    --secondary-l: 60%;
    --secondary: hsl(var(--secondary-h), var(--secondary-s), var(--secondary-l));

    --accent-h: 340;
    --accent-s: 85%;
    --accent-l: 65%;
    --accent: hsl(var(--accent-h), var(--accent-s), var(--accent-l));

    --success: #22c55e;
    --danger: #ef4444;
    --warning: #f59e0b;

    --bg-gradient: linear-gradient(135deg, #f0f4ff 0%, #e5eaff 100%);
    --card-bg: rgba(255, 255, 255, 0.7);
    --card-border: rgba(255, 255, 255, 0.8);
    --text-main: #1e293b;
    --text-muted: #64748b;
    --bg-animated-bg: var(--bg-gradient);
    --footer-bg: rgba(255, 255, 255, 0.5);
    --footer-text: var(--text-muted);
    --navbar-bg: rgba(255, 255, 255, 0.8);

    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);

    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1.25rem;
    --radius-xl: 2rem;

    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);

    --primary-bg: hsla(var(--primary-h), var(--primary-s), var(--primary-l), 0.15);
    --secondary-bg: rgba(255, 255, 255, 0.4);
    --border: var(--card-border);
    --success-bg: rgba(34, 197, 94, 0.15);
    --hover-bg: hsla(var(--primary-h), var(--primary-s), var(--primary-l), 0.05);
}

[data-theme="dark"] {
    --primary-l: 55%;
    --bg-gradient: linear-gradient(135deg, #0f172a 0%, #1e1b4b 100%);
    --card-bg: rgba(30, 41, 59, 0.85);
    /* Slightly more opaque */
    --card-border: rgba(255, 255, 255, 0.15);
    --text-main: #f8fafc;
    --text-muted: #e2e8f0;
    /* Even lighter for maximum contrast */
    --navbar-bg: rgba(15, 23, 42, 0.8);
    --footer-bg: rgba(15, 23, 42, 0.8);
    --footer-text: #cbd5e1;
    --bg-main: #0f172a;
    --bg-secondary: #1e293b;

    --secondary-bg: rgba(15, 23, 42, 0.4);
    --hover-bg: hsla(var(--primary-h), var(--primary-s), var(--primary-l), 0.15);
    --success-bg: rgba(34, 197, 94, 0.25);
}

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

body {
    font-family: 'Outfit', sans-serif;
    background: var(--bg-gradient);
    color: var(--text-main);
    min-height: 100vh;
    overflow-x: hidden;
    transition: background 0.5s ease;
}

.text-muted {
    color: var(--text-muted) !important;
}

/* --- Animated Background --- */
.bg-animated {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: var(--bg-gradient);
}

.bg-animated::before {
    content: "";
    position: absolute;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, var(--primary) 0%, transparent 70%);
    filter: blur(80px);
    top: -400px;
    right: -200px;
    opacity: 0.2;
    animation: move 20s infinite alternate;
}

.bg-animated::after {
    content: "";
    position: absolute;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--secondary) 0%, transparent 70%);
    filter: blur(80px);
    bottom: -200px;
    left: -100px;
    opacity: 0.15;
    animation: move 15s infinite alternate-reverse;
}

@keyframes move {
    from {
        transform: translate(0, 0);
    }

    to {
        transform: translate(-10%, 10%);
    }
}

[data-theme="dark"] .bg-animated::before {
    opacity: 0.3;
}

[data-theme="dark"] .bg-animated::after {
    opacity: 0.25;
}

/* --- Navbar --- */
.navbar {
    background: var(--navbar-bg) !important;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--card-border);
    padding: 0.75rem 0;
    transition: var(--transition);
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.4rem;
    background: linear-gradient(to right, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.navbar-brand i {
    -webkit-text-fill-color: var(--primary);
}

.nav-link {
    color: var(--text-main) !important;
    font-weight: 500;
    transition: var(--transition);
    border-radius: var(--radius-sm);
}

.nav-link:hover {
    background: rgba(var(--primary-h), var(--primary-s), var(--primary-l), 0.1);
    color: var(--primary) !important;
}

/* --- Buttons --- */
.btn {
    border-radius: var(--radius-md);
    padding: 0.6rem 1.5rem;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    box-shadow: 0 4px 14px 0 rgba(102, 126, 234, 0.39);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.45);
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
}

.btn-secondary {
    background: linear-gradient(135deg, var(--secondary) 0%, #764ba2 100%);
    color: white;
}

.btn-success {
    background: var(--success);
    color: white;
}

.btn-danger {
    background: var(--danger);
    color: white;
}

/* --- Cards & Glassmorphism --- */
.card {
    background: var(--card-bg);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
    color: var(--text-main);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
}

.card-header {
    background: transparent;
    border-bottom: 1px solid var(--card-border);
    padding: 1.5rem;
    font-weight: 700;
    font-size: 1.25rem;
}

.card-body {
    padding: 1.5rem;
}

/* --- Forms --- */
.form-control {
    background: rgba(255, 255, 255, 0.5);
    border: 2px solid var(--card-border);
    border-radius: var(--radius-md);
    padding: 0.75rem 1rem;
    transition: var(--transition);
    color: var(--text-main);
}

[data-theme="dark"] .form-control {
    background: rgba(15, 23, 42, 0.6);
    color: var(--text-main);
}

.form-control::placeholder {
    color: var(--text-muted);
    opacity: 0.7;
}

[data-theme="dark"] .form-control::placeholder {
    color: #94a3b8;
    /* Slightly darker than text-muted but still very visible */
}

.form-control:focus {
    background: rgba(255, 255, 255, 0.8);
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
    outline: none;
}

[data-theme="dark"] .form-control:focus {
    background: rgba(15, 23, 42, 0.8);
}

.form-label {
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-main);
}

/* --- Login Specific --- */
.login-container {
    max-width: 450px;
    width: 100%;
    margin: 4rem auto;
}

.login-card {
    text-align: center;
}

.login-logo {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: white;
    box-shadow: var(--shadow-md);
}

/* --- Dashboard Specific --- */
.dashboard-title {
    font-weight: 800;
    margin-bottom: 2rem;
    color: var(--text-main);
}

.list-group-item {
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-md) !important;
    margin-bottom: 0.5rem;
    transition: var(--transition);
    color: var(--text-main);
}

.list-group-item:hover {
    background: rgba(var(--primary-h), var(--primary-s), var(--primary-l), 0.1);
    border-color: var(--primary);
    transform: translateX(5px);
}

/* --- Folder Tree Styling --- */
.folder-container {
    margin-bottom: 2px;
}

.folder-header {
    cursor: pointer;
    display: flex;
    align-items: center;
    padding: 0.6rem 0.75rem !important;
    gap: 0.5rem;
    font-weight: 600;
}

.folder-toggle-icon {
    font-size: 0.8rem;
    transition: transform 0.2s ease;
    width: 1rem;
    display: inline-block;
    text-align: center;
}

.folder-header.open .folder-toggle-icon {
    transform: rotate(90deg);
}

.folder-content {
    display: none;
    border-left: 1px solid var(--card-border);
    margin-left: 0.5rem !important;
    padding-left: 0.5rem;
}

.folder-header.open + .folder-content {
    display: block;
}

.file-item {
    margin-left: 1.5rem !important;
    padding: 0.5rem 0.75rem !important;
    font-size: 0.95rem;
}

[data-theme="dark"] .folder-header:hover,
[data-theme="dark"] .file-item:hover {
    background: rgba(255, 255, 255, 0.05);
}

/* --- QCM / QROL Rendering --- */
.question-title {
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.4;
}

.option-container {
    border: 2px solid var(--card-border);
    border-radius: var(--radius-md);
    padding: 0.5rem;
    transition: var(--transition);
    background: rgba(255, 255, 255, 0.2);
}

[data-theme="dark"] .option-container {
    background: rgba(15, 23, 42, 0.2);
}

.option-container:has(.correct-choice) {
    border-color: var(--success);
    background: rgba(34, 197, 94, 0.15);
    color: #166534;
}

.option-container:has(.incorrect-choice) {
    border-color: var(--danger);
    background: rgba(239, 68, 68, 0.15);
    color: #991b1b;
}

[data-theme="dark"] .option-container:has(.correct-choice) {
    background: rgba(34, 197, 94, 0.2);
    color: #4ade80;
}

[data-theme="dark"] .option-container:has(.incorrect-choice) {
    background: rgba(239, 68, 68, 0.2);
    color: #f87171;
}

.option-label {
    display: block;
    padding: 1rem 1.25rem;
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
}

[data-theme="dark"] .option-label {
    background: rgba(15, 23, 42, 0.3);
}

.option-label:hover {
    border-color: var(--primary);
    background: rgba(var(--primary-h), var(--primary-s), var(--primary-l), 0.05);
}

.option-label.selected {
    border-color: var(--primary);
    background: var(--primary);
    color: white;
    box-shadow: 0 4px 15px rgba(var(--primary-h), var(--primary-s), var(--primary-l), 0.3);
}

.option-label.correct-choice {
    border-color: var(--success);
    background: rgba(34, 197, 94, 0.15);
    color: #166534;
}

[data-theme="dark"] .option-label.correct-choice {
    background: rgba(34, 197, 94, 0.25);
    color: #4ade80;
    border-color: #22c55e;
}

.option-label.incorrect-choice {
    border-color: var(--danger);
    background: rgba(239, 68, 68, 0.15);
    color: #991b1b;
}

[data-theme="dark"] .option-label.incorrect-choice {
    background: rgba(239, 68, 68, 0.25);
    color: #f87171;
    border-color: #ef4444;
}

.explanation-content {
    padding: 0.75rem 1rem 0.5rem 1rem;
    animation: fadeIn 0.4s ease;
}

.explanation-content p {
    color: inherit;
}

/* --- QROL Specific --- */
.qrol-question-container {
    background: linear-gradient(135deg, rgba(var(--primary-h), var(--primary-s), var(--primary-l), 0.05), rgba(var(--secondary-h), var(--secondary-s), var(--secondary-l), 0.05));
    border-left: 5px solid var(--primary);
    padding: 2rem;
    border-radius: var(--radius-md);
    margin-bottom: 1.5rem;
}

.qrol-evaluation-card {
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-top: 1.5rem;
    border: 1px solid var(--card-border);
}

.evaluation-header {
    background: linear-gradient(to right, var(--primary), var(--secondary));
    color: white;
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.evaluation-score {
    background: rgba(255, 255, 255, 0.25);
    padding: 0.3rem 0.8rem;
    border-radius: var(--radius-xl);
    font-weight: 800;
}

.footer {
    background: var(--footer-bg) !important;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-top: 1px solid var(--card-border);
    color: var(--footer-text);
    transition: var(--transition);
}

/* --- Alerts --- */
.alert-info {
    background: rgba(var(--primary-h), var(--primary-s), var(--primary-l), 0.05);
    border: 1px solid rgba(var(--primary-h), var(--primary-s), var(--primary-l), 0.1);
    color: var(--text-main);
    border-radius: var(--radius-md);
}

.alert-info i {
    color: var(--primary);
}

[data-theme="dark"] .alert-info {
    background: rgba(var(--primary-h), var(--primary-s), var(--primary-l), 0.15);
    border: 1px solid rgba(var(--primary-h), var(--primary-s), var(--primary-l), 0.3);
    color: #e2e8f0;
}

/* --- Responsive --- */
@media (max-width: 768px) {
    .container {
        padding-left: 1.5rem;
        padding-right: 1.5rem;
    }

    .dashboard-title {
        font-size: 1.75rem;
    }

    .card {
        margin-bottom: 1.5rem;
    }

    .btn {
        width: 100%;
        margin-bottom: 0.5rem;
    }
}

/* --- Scrollbar --- */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

/* --- Annales Mode --- */
.qcm-progress-dots {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
}

.qcm-nav-dot {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    cursor: pointer;
    background: var(--secondary-bg);
    border: 2px solid var(--border);
    transition: all 0.2s;
}

.qcm-nav-dot:hover {
    background: var(--primary-bg);
    border-color: var(--primary);
}

.qcm-nav-dot.answered {
    background: var(--success-bg);
    border-color: var(--success);
    color: var(--success);
}

.qcm-nav-dot.current {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

.correction-item {
    border-left: 4px solid;
}

.correction-item.correct-choice {
    background: rgba(25, 135, 84, 0.1);
    border-color: var(--success);
}

.correction-item.incorrect-choice {
    background: rgba(220, 53, 69, 0.1);
    border-color: var(--danger);
}

.study-question .card-header.cursor-pointer {
    cursor: pointer;
}

.study-question .card-header:hover {
    background: var(--hover-bg);
}

.study-option {
    transition: var(--transition);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--secondary-bg);
}

.study-option:hover {
    border-color: var(--primary);
    background: var(--hover-bg);
}

.study-meta {
    border-top: 1px solid var(--border);
    padding-top: 10px;
    margin-top: 10px;
}

/* --- Modal Dark Mode --- */
[data-theme="dark"] .modal-backdrop {
    background-color: rgba(0, 0, 0, 0.7);
}

[data-theme="dark"] .modal-content {
    background: #1e293b;
    border-color: var(--border);
}

[data-theme="dark"] .modal-header {
    background: #0f172a;
    border-bottom-color: var(--border);
}

[data-theme="dark"] .modal-header .modal-title {
    color: var(--text-main);
}

[data-theme="dark"] .modal-header .btn-close {
    filter: invert(1);
}

[data-theme="dark"] .modal-body {
    background: #1e293b;
}

[data-theme="dark"] .modal-body .form-label {
    color: var(--text-main);
}

[data-theme="dark"] .modal-footer {
    background: #0f172a;
    border-top-color: var(--border);
}

[data-theme="dark"] #edit-question-modal .modal-dialog .modal-content,
[data-theme="dark"] #add-question-modal .modal-dialog .modal-content {
    background: #1e293b;
    border: 1px solid var(--border);
}

[data-theme="dark"] #edit-question-modal .input-group-text,
[data-theme="dark"] #add-question-modal .input-group-text {
    background: #0f172a;
    border-color: var(--border);
    color: var(--text-main);
}

[data-theme="dark"] #edit-question-modal .btn-outline-success,
[data-theme="dark"] #add-question-modal .btn-outline-success {
    color: #22c55e;
    border-color: #22c55e;
}

[data-theme="dark"] #edit-question-modal .btn-outline-success:hover,
[data-theme="dark"] #add-question-modal .btn-outline-success:hover {
    background: #22c55e;
    color: #000;
}