/* ============================================
   ULTRA MINIMALIST EXAM DATABASE VIEWER
   Compact layout with slot machine carousels
   ============================================ */

/* CSS Custom Properties for Ultra Minimalist Themes */
:root {
    /* Neutral base colors */
    --neutral-50: #fafafa;
    --neutral-100: #f5f5f5;
    --neutral-200: #e5e5e5;
    --neutral-300: #d4d4d4;
    --neutral-400: #a3a3a3;
    --neutral-500: #737373;
    --neutral-600: #525252;
    --neutral-700: #404040;
    --neutral-800: #262626;
    --neutral-900: #171717;

    /* Subtle accent colors */
    --accent-blue: #6366f1;
    --accent-blue-soft: #818cf8;
    --accent-green: #10b981;
    --accent-orange: #f59e0b;
    --accent-red: #ef4444;

    /* Shadows */
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

/* Light Theme - Ultra Minimalist */
[data-bs-theme="light"] {
    --bs-body-bg: var(--neutral-50);
    --bs-body-color: var(--neutral-700);
    --bs-border-color: var(--neutral-200);
    --navbar-bg: #ffffff;
    --navbar-border: var(--neutral-200);
    --filter-bg: #ffffff;
    --card-bg: #ffffff;
    --card-border: var(--neutral-200);
    --input-bg: #ffffff;
    --input-border: var(--neutral-300);
    --input-focus: var(--accent-blue);
    --text-muted: var(--neutral-500);
    --text-primary: var(--neutral-700);
    --btn-primary-bg: var(--neutral-700);
    --btn-primary-hover: var(--neutral-800);
    --btn-secondary-bg: var(--neutral-100);
    --btn-secondary-hover: var(--neutral-200);
    --btn-secondary-text: var(--neutral-600);
    --success-color: var(--accent-green);
    --warning-color: var(--accent-orange);
    --danger-color: var(--accent-red);
    --info-color: var(--accent-blue-soft);
}

/* Dark Theme - Ultra Minimalist */
[data-bs-theme="dark"] {
    --bs-body-bg: var(--neutral-900);
    --bs-body-color: var(--neutral-300);
    --bs-border-color: var(--neutral-700);
    --navbar-bg: var(--neutral-800);
    --navbar-border: var(--neutral-700);
    --filter-bg: var(--neutral-800);
    --card-bg: var(--neutral-800);
    --card-border: var(--neutral-700);
    --input-bg: var(--neutral-800);
    --input-border: var(--neutral-600);
    --input-focus: var(--accent-blue-soft);
    --text-muted: var(--neutral-500);
    --text-primary: var(--neutral-300);
    --btn-primary-bg: var(--neutral-700);
    --btn-primary-hover: var(--neutral-600);
    --btn-secondary-bg: var(--neutral-700);
    --btn-secondary-hover: var(--neutral-600);
    --btn-secondary-text: var(--neutral-400);
    --success-color: var(--accent-green);
    --warning-color: var(--accent-orange);
    --danger-color: var(--accent-red);
    --info-color: var(--accent-blue-soft);
}

/* ============================================
   GLOBAL STYLES
   ============================================ */

* {
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 14px;
    line-height: 1.5;
    background-color: var(--bs-body-bg);
    color: var(--bs-body-color);
    transition: all 0.2s ease;
    margin: 0;
    padding: 0;
}

/* ============================================
   LOGIN PAGE STYLES
   ============================================ */

.login-body {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--bs-body-bg) 0%, var(--filter-bg) 100%);
}

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 2rem;
}

.login-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 3rem 2rem;
    box-shadow: var(--shadow-lg);
    position: relative;
    animation: slideInUp 0.6s ease-out;
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-logo {
    width: 64px;
    height: 64px;
    margin: 0 auto 1rem;
    background: linear-gradient(135deg, var(--btn-primary-bg), var(--info-color));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 24px;
}

.login-title {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.login-subtitle {
    font-size: 14px;
    color: var(--text-muted);
    margin: 0;
}

.login-form .form-floating {
    margin-bottom: 1rem;
}

.login-form .form-control {
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 14px;
    padding: 0.75rem;
    transition: all 0.2s ease;
}

.login-form .form-control:focus {
    border-color: var(--input-focus);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
    outline: none;
}

.login-form .form-floating>label {
    color: var(--text-muted);
    font-size: 14px;
}

.btn-login {
    width: 100%;
    background: var(--btn-primary-bg);
    border: none;
    border-radius: 8px;
    color: white;
    font-size: 14px;
    font-weight: 500;
    padding: 0.75rem;
    transition: all 0.2s ease;
}

.btn-login:hover {
    background: var(--btn-primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.login-footer {
    margin-top: 2rem;
    text-align: center;
}

.login-accounts {
    margin-top: 1.5rem;
}

.demo-accounts {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.demo-badge {
    display: inline-block;
    background: var(--btn-secondary-bg);
    color: var(--btn-secondary-text);
    padding: 0.25rem 0.75rem;
    border-radius: 6px;
    font-size: 12px;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
}

.theme-toggle-login {
    position: absolute;
    top: 1rem;
    right: 1rem;
}

/* ============================================
   MAIN APPLICATION STYLES
   ============================================ */

/* Navigation Bar */
.navbar-custom {
    background: linear-gradient(135deg, var(--navbar-bg) 0%, rgba(255, 255, 255, 0.1) 100%);
    border-bottom: 1px solid var(--navbar-border);
    backdrop-filter: blur(10px);
    padding: 0.75rem 1rem;
    box-shadow: var(--shadow-xs);
}

.navbar-brand {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary) !important;
    margin-right: 2rem;
}

.navbar-nav {
    align-items: center;
}

.nav-item {
    margin: 0 0.5rem;
}

.nav-link {
    color: var(--text-muted) !important;
    font-size: 14px;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    border-radius: 6px;
    transition: all 0.2s ease;
}

.nav-link:hover {
    background: var(--btn-secondary-bg);
    color: var(--text-primary) !important;
}

/* Theme Toggle */
.form-check-input {
    background-color: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 1rem;
    transition: all 0.2s ease;
}

.form-check-input:checked {
    background-color: var(--info-color);
    border-color: var(--info-color);
}

.form-check-input:focus {
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-check-label {
    color: var(--text-muted);
    font-size: 16px;
    cursor: pointer;
    margin-left: 0.5rem;
}

/* ============================================
   COMPACT FILTER SYSTEM
   ============================================ */

.filter-section-compact {
    background: var(--filter-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 1rem;
    margin-bottom: 1rem;
    box-shadow: var(--shadow-sm);
}

.filters-single-row {
    display: flex;
    align-items: end;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
    flex-wrap: wrap;
}

.filter-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    min-width: 100px;
}

.filter-item-small {
    min-width: 80px;
    max-width: 120px;
}

.filter-item-subject {
    min-width: 140px;
    max-width: 160px;
}

.filter-item label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin: 0;
}

.form-select-compact {
    padding: 0.4rem 0.6rem;
    border-radius: 6px;
    border: 1px solid var(--input-border);
    background-color: var(--input-bg);
    color: var(--text-primary);
    font-size: 0.85rem;
    transition: all 0.2s ease;
    appearance: none;
    background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath fill='none' stroke='%23666' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.5rem center;
    background-size: 12px 8px;
}

.form-select-compact:focus {
    border-color: var(--input-focus);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.1);
    outline: none;
}

.form-select-compact:disabled {
    background-color: var(--btn-secondary-bg);
    color: var(--text-muted);
    cursor: not-allowed;
    opacity: 0.6;
}

/* Ensure long text (e.g. URL strings) wraps inside question/part/marking text areas */
#questionText,
#partText,
#markingSchemeText {
    white-space: pre-wrap;
    /* Preserve newlines but allow wrapping */
    word-break: break-word;
    /* Break long words/URLs */
    overflow-wrap: anywhere;
    /* Allow breaks anywhere if necessary */
    hyphens: auto;
    /* Optional hyphenation */
    max-width: 100%;
}

/* Also ensure card body content doesn't overflow horizontally */
.question-card .card-body,
.criteria-card,
.question-container {
    overflow-wrap: anywhere;
}

/* Switch Groups */
.switch-group-compact {
    display: flex;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 6px;
    overflow: hidden;
}

.switch-input-compact {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.switch-label-compact {
    flex: 1;
    padding: 0.4rem 0.6rem;
    text-align: center;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--text-muted);
    background: transparent;
    transition: all 0.2s ease;
    border: none;
    margin: 0;
    min-width: 30px;
}

.switch-input-compact:checked+.switch-label-compact {
    background: var(--accent-blue);
    color: white;
}

.switch-label-compact:hover {
    background: var(--btn-secondary-hover);
}

.switch-input-compact:checked+.switch-label-compact:hover {
    background: var(--accent-blue);
}

/* Clear Button */
.filter-actions-compact {
    display: flex;
    align-items: end;
    gap: 0.5rem;
}

.btn-clear-compact {
    width: 32px;
    height: 32px;
    border: none;
    border-radius: 50%;
    background: linear-gradient(135deg, #ff9a9e 0%, #fecfef 100%);
    color: white;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-clear-compact:hover {
    background: linear-gradient(135deg, #ff758c 0%, #ff7eb3 100%);
    transform: scale(1.1);
}

/* Global Record Button */
.btn-record-compact {
    width: 32px;
    height: 32px;
    border: none;
    border-radius: 50%;
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    color: white;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-record-compact:hover {
    background: linear-gradient(135deg, #d97706 0%, #b45309 100%);
    transform: scale(1.1);
}

.btn-record-compact:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* Green Download Button */
.btn-download-compact {
    width: 32px;
    height: 32px;
    border: none;
    border-radius: 50%;
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-download-compact:hover {
    background: linear-gradient(135deg, #059669 0%, #047857 100%);
    transform: scale(1.1);
}

/* Next Button */
.btn-next-compact {
    width: 32px;
    height: 32px;
    border: none;
    border-radius: 50%;
    background: linear-gradient(135deg, #6366f1 0%, #a5b4fc 100%);
    color: white;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-next-compact:hover {
    background: linear-gradient(135deg, #4f46e5 0%, #818cf8 100%);
    transform: scale(1.1);
}

/* Question Details Inline */
.filter-item-details {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    min-width: 200px;
}

.filter-item-details label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin: 0;
}

.details-carousel-group-inline {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.detail-carousel {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    background: var(--input-bg);
    padding: 0.3rem 0.5rem;
    border-radius: 6px;
    border: 1px solid var(--input-border);
}

.detail-label {
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--text-muted);
    min-width: 20px;
}

.detail-display {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-primary);
    min-width: 25px;
    text-align: center;
}

.carousel-btn-compact {
    width: 20px;
    height: 20px;
    border: none;
    border-radius: 50%;
    background: var(--btn-secondary-bg);
    color: var(--text-muted);
    font-size: 0.7rem;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
}

.carousel-btn-compact:hover {
    background: var(--accent-blue);
    color: white;
    transform: scale(1.1);
}

.carousel-btn-compact:disabled {
    opacity: 0.3;
    cursor: not-allowed;
    transform: none;
}

/* Content Centering */
.centered-content {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 300px;
    text-align: center;
}

/* PDF Viewer Styles */
.pdf-container {
    position: relative;
    width: 100%;
    height: 100%;
}

.pdf-viewer {
    display: block;
    border: none;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* Image Container Styles */
.image-container {
    width: 100%;
    height: 100%;
}

/* Image Popup Styles */
.clickable-image {
    transition: opacity 0.2s ease;
    max-width: 100%;
    max-height: 250px;
    object-fit: contain;
}

.clickable-image:hover {
    opacity: 0.8;
}

.image-popup-backdrop {
    backdrop-filter: blur(2px);
}

/* Responsive PDF viewer */
@media (max-width: 768px) {
    .pdf-viewer {
        height: 250px !important;
    }

    .centered-content {
        min-height: 250px;
    }

    .clickable-image {
        max-height: 200px;
    }
}

/* Image popup responsive styles */
@media (max-width: 768px) {
    .image-popup-backdrop .img-container {
        max-width: 95% !important;
        max-height: 80% !important;
        padding: 0px !important;
    }

    .image-popup-backdrop img {
        max-width: 350px !important;
        max-height: 300px !important;
    }
}

/* Marks Display */
.filter-item-marks {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    min-width: 120px;
}

.filter-item-marks label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin: 0;
}

.marks-display-group {
    display: flex;
    gap: 0.5rem;
}

.marks-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: var(--input-bg);
    padding: 0.3rem 0.5rem;
    border-radius: 6px;
    border: 1px solid var(--input-border);
    min-width: 50px;
}

.marks-label {
    font-size: 0.65rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    margin-bottom: 0.1rem;
}

.marks-value {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--accent-blue);
    text-align: center;
}

/* ============================================
   QUESTION CONTENT CARDS
   ============================================ */

.question-container {
    margin-top: 1rem;
}

.question-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all 0.2s ease;
    position: relative;
}

.question-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.card-header {
    padding: 0.75rem 1rem;
    font-weight: 600;
    font-size: 0.9rem;
    border-bottom: 1px solid var(--card-border);
    display: flex;
    align-items: center;
}

.card-header.primary {
    background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-blue-soft) 100%);
    color: white;
    border-bottom-color: var(--accent-blue);
}

.card-header.warning {
    background: linear-gradient(135deg, var(--warning-color) 0%, #fbbf24 100%);
    color: white;
    border-bottom-color: var(--warning-color);
}

.card-header.success {
    background: linear-gradient(135deg, var(--success-color) 0%, #34d399 100%);
    color: white;
    border-bottom-color: var(--success-color);
}

.card-header.question {
    background: linear-gradient(135deg, #6366f1, #a5b4fc);
    /* Indigo */
    color: white;
    border-bottom-color: #6366f1;
}

.card-header.question-part {
    background: linear-gradient(135deg, #10b981, #6ee7b7);
    /* Green */
    color: white;
    border-bottom-color: #10b981;
}

.card-header.marking-scheme {
    background: linear-gradient(135deg, #f97316, #fdba74);
    /* Orange */
    color: white;
    border-bottom-color: #f97316;
}

.card-body {
    padding: 1rem;
    color: var(--text-primary);
    font-size: 0.9rem;
    line-height: 1.6;
}

.card-body img {
    max-width: 100%;
    height: auto;
    border-radius: 6px;
    box-shadow: var(--shadow-sm);
    margin-top: 0.5rem;
}

/* ============================================
   CRITERIA CARDS
   ============================================ */

.criteria-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    padding: 1rem;
    text-align: center;
    transition: all 0.2s ease;
    position: relative;
    overflow: hidden;
}

.criteria-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.criteria-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, transparent 0%, var(--accent-color) 50%, transparent 100%);
}

.criteria-card.low::before {
    --accent-color: var(--danger-color);
}

.criteria-card.mid::before {
    --accent-color: var(--warning-color);
}

.criteria-card.high::before {
    --accent-color: var(--success-color);
}

.criteria-marks {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.criteria-card.low .criteria-marks {
    color: var(--danger-color);
}

.criteria-card.mid .criteria-marks {
    color: var(--warning-color);
}

.criteria-card.high .criteria-marks {
    color: var(--success-color);
}

.criteria-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.5rem;
}

.criteria-text {
    font-size: 0.85rem;
    color: var(--text-primary);
    line-height: 1.4;
}

/* ============================================
   STATE CONTAINERS
   ============================================ */

.state-container {
    padding: 3rem 2rem;
    text-align: center;
    color: var(--text-muted);
}

.state-container h5 {
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.state-container p {
    color: var(--text-muted);
}

/* Loading Spinner */
.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--card-border);
    border-top: 3px solid var(--accent-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

/* ============================================
   ANIMATIONS
   ============================================ */

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideOutRight {
    from {
        opacity: 1;
        transform: translateX(0);
    }

    to {
        opacity: 0;
        transform: translateX(30px);
    }
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 768px) {
    .filters-single-row {
        gap: 0.5rem;
    }

    .filter-item {
        min-width: 80px;
    }

    .filter-item-details {
        min-width: 160px;
    }

    .filter-item-marks {
        min-width: 100px;
    }

    .marks-display-group {
        gap: 0.3rem;
    }

    .marks-item {
        min-width: 40px;
        padding: 0.2rem 0.3rem;
    }

    .detail-carousel {
        gap: 0.2rem;
        padding: 0.2rem 0.3rem;
    }

    .navbar-brand {
        font-size: 16px;
    }

    .question-card {
        margin-bottom: 1rem;
    }
}

@media (max-width: 576px) {
    .filters-single-row {
        flex-direction: column;
        align-items: stretch;
    }

    .filter-item,
    .filter-item-small,
    .filter-item-subject,
    .filter-item-details,
    .filter-item-marks {
        min-width: auto;
        max-width: none;
    }

    .details-carousel-group-inline,
    .marks-display-group {
        justify-content: center;
    }

    .login-container {
        padding: 1rem;
    }

    .login-card {
        padding: 2rem 1.5rem;
    }
}

/* ============================================
   PRINT STYLES
   ============================================ */

@media print {

    .navbar-custom,
    .filter-section-compact,
    .state-container {
        display: none !important;
    }

    .question-container {
        margin-top: 0 !important;
    }

    .question-card,
    .criteria-card {
        break-inside: avoid;
        box-shadow: none !important;
        border: 1px solid #ccc !important;
    }
}