/* ═══════════════════════════════════════════════════════════════════
   JobSolution.thbd.in — Design System
   Custom CSS — Premium, Unique, Not Generic AI Design
   Mobile: 220px → Desktop: 1920px
════════════════════════════════════════════════════════════════════ */

/* ─── Google Fonts ─────────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Anek+Bangla:wght@100..800&family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ─── CSS Custom Properties (Design Tokens) ─────────────────────── */
:root {
    /* Brand Colors */
    --color-primary: #2563EB;
    /* Blue 600 */
    --color-primary-dark: #1D4ED8;
    /* Blue 700 */
    --color-primary-light: #3B82F6;
    /* Blue 500 */
    --color-primary-glow: rgba(37, 99, 235, 0.15);

    --color-accent: #10B981;
    /* Emerald 500 — correct answer */
    --color-accent-dark: #059669;
    --color-accent-glow: rgba(16, 185, 129, 0.15);

    --color-danger: #EF4444;
    /* Red 500 */
    --color-warning: #F59E0B;
    /* Amber 500 */
    --color-info: #06B6D4;
    /* Cyan 500 */
    --color-purple: #8B5CF6;
    --color-purple-light: #A78BFA;
    --color-pink: #EC4899;
    --color-pink-light: #F472B6;

    /* Neutral Palette */
    --color-bg: #0F1117;
    /* Main background — deep dark */
    --color-bg-2: #161B27;
    /* Card background */
    --color-bg-3: #1E2535;
    /* Elevated surface */
    --color-bg-4: #252D3D;
    /* Hover state */
    --color-surface: #161B27;
    --color-surface-card: #161B27;
    --color-border: #2A3249;
    /* Border */
    --color-border-light: #374151;

    --color-text: #E2E8F0;
    /* Body text */
    --color-text-muted: #cfdbe7bd;
    /* Muted text */
    --color-text-dim: #d2d7df;
    /* Very muted */
    --color-text-white: #F8FAFC;
    /* Headings */

    /* Typography */
    --font-primary: 'Inter', 'Anek Bangla', sans-serif;
    --font-bengali: 'Anek Bangla', 'Inter', sans-serif;

    /* Font Sizes (fluid, clamp) */
    --text-xs: clamp(0.65rem, 1.5vw, 0.75rem);
    --text-sm: clamp(0.75rem, 2vw, 0.875rem);
    --text-base: clamp(0.875rem, 2.5vw, 1rem);
    --text-lg: clamp(1rem, 3vw, 1.125rem);
    --text-xl: clamp(1.1rem, 3.5vw, 1.25rem);
    --text-2xl: clamp(1.2rem, 4vw, 1.5rem);
    --text-3xl: clamp(1.4rem, 5vw, 1.875rem);
    --text-4xl: clamp(1.6rem, 6vw, 2.25rem);

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4), 0 2px 6px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5), 0 4px 12px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 24px var(--color-primary-glow);
    --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.05);

    /* Transitions */
    --transition-fast: all 0.15s ease;
    --transition-base: all 0.25s ease;
    --transition-slow: all 0.4s ease;

    /* Layout */
    --container-max: 1280px;
    --sidebar-width: 270px;
    --header-height: 64px;
    --navbar-mobile-height: 56px;
}

/* ─── Reset & Base ──────────────────────────────────────────────── */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-primary);
    background-color: var(--color-bg);
    color: var(--color-text);
    font-size: var(--text-base);
    line-height: 1.7;
    min-height: 100vh;
    overflow-x: hidden;
    /* Minimum supported: 220px */
    min-width: 220px;
}

/* Bangla text */
.text-bn,
p,
li,
td,
.mcq-text {
    font-family: var(--font-bengali);
}

/* ─── Scrollbar (Custom) ────────────────────────────────────────── */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: var(--radius-full);
}

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

/* ─── Typography ────────────────────────────────────────────────── */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-primary);
    color: var(--color-text-white);
    font-weight: 700;
    line-height: 1.3;
}

h1 {
    font-size: var(--text-4xl);
}

h2 {
    font-size: var(--text-3xl);
}

h3 {
    font-size: var(--text-2xl);
}

h4 {
    font-size: var(--text-xl);
}

h5 {
    font-size: var(--text-lg);
}

h6 {
    font-size: var(--text-base);
}

a {
    color: var(--color-primary-light);
    text-decoration: none;
    transition: var(--transition-fast);
}

a:hover {
    color: var(--color-primary-dark);
}

/* ─── Layout ────────────────────────────────────────────────────── */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-4);
}

@media (min-width: 640px) {
    .container {
        padding: 0 var(--space-6);
    }
}

@media (min-width: 1024px) {
    .container {
        padding: 0 var(--space-8);
    }
}

.layout-main {
    display: flex;
    min-height: 100vh;
    padding-top: var(--header-height);
}

.layout-sidebar {
    width: var(--sidebar-width);
    min-height: calc(100vh - var(--header-height));
    flex-shrink: 0;
    position: sticky;
    top: var(--header-height);
    height: calc(100vh - var(--header-height));
    overflow-y: auto;
    background: var(--color-bg-2);
    border-right: 1px solid var(--color-border);
    display: none;
}

@media (min-width: 1024px) {
    .layout-sidebar {
        display: block;
    }
}

.layout-content {
    flex: 1;
    min-width: 0;
    padding: var(--space-6) var(--space-4);
}

@media (min-width: 768px) {
    .layout-content {
        padding: var(--space-8) var(--space-6);
    }
}

/* ─── Navbar ────────────────────────────────────────────────────── */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    z-index: 1000;
    background: rgba(15, 17, 23, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
}

.navbar-inner {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-4);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-weight: 800;
    font-size: var(--text-xl);
    color: var(--color-text-white);
    text-decoration: none;
    letter-spacing: -0.5px;
    flex-shrink: 0;
}

.navbar-brand .brand-icon {
    width: 34px;
    height: 34px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-info));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}

.navbar-brand .brand-text span {
    color: var(--color-primary-light);
}

.navbar-nav {
    display: none;
    list-style: none;
    flex-direction: row;
    gap: var(--space-1);
}

@media (min-width: 768px) {
    .navbar-nav {
        display: flex;
    }
}

.navbar-nav a {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    color: var(--color-text-dim);
    font-size: var(--text-sm);
    font-weight: 500;
    transition: var(--transition-fast);
}

.navbar-nav a:hover,
.navbar-nav a.active {
    background: var(--color-bg-3);
    color: var(--color-text-white);
}

.navbar-nav a.active {
    color: var(--color-primary-light);
}

.navbar-actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

/* Hamburger */
.navbar-toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: var(--space-2);
    border-radius: var(--radius-sm);
    background: none;
    border: none;
    transition: var(--transition-fast);
}

@media (min-width: 768px) {
    .navbar-toggle {
        display: none;
    }
}

.navbar-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--color-text-muted);
    border-radius: var(--radius-full);
    transition: var(--transition-base);
}

.navbar-toggle:hover span {
    background: var(--color-text-white);
}

/* ─── Cards ──────────────────────────────────────────────────────── */
.card {
    background: var(--color-bg-2);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    overflow: hidden;
    transition: var(--transition-base);
}

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

.card-body {
    padding: var(--space-6);
}

.card-header {
    padding: var(--space-4) var(--space-6);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-title {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--color-text-white);
}

/* Glass Card */
.card-glass {
    background: rgba(22, 27, 39, 0.7);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.07);
}

/* ─── Buttons ────────────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-5);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: var(--transition-fast);
    white-space: nowrap;
    text-decoration: none;
    letter-spacing: 0.2px;
    line-height: 1.5;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: #fff;
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.35);
}

.btn-primary:hover:not(:disabled) {
    background: linear-gradient(135deg, var(--color-primary-dark), #1e40af);
    box-shadow: 0 4px 16px rgba(37, 99, 235, 0.5);
    transform: translateY(-1px);
    color: #fff;
}

.btn-accent {
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    color: #fff;
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.3);
}

.btn-accent:hover:not(:disabled) {
    box-shadow: 0 4px 16px rgba(16, 185, 129, 0.5);
    transform: translateY(-1px);
    color: #fff;
}

.btn-outline {
    background: transparent;
    color: var(--color-primary-light);
    border: 1px solid var(--color-primary);
}

.btn-outline:hover:not(:disabled) {
    background: var(--color-primary-glow);
    color: var(--color-primary-light);
}

.btn-ghost {
    background: transparent;
    color: var(--color-text-muted);
    border: 1px solid var(--color-border);
}

.btn-ghost:hover:not(:disabled) {
    background: var(--color-bg-3);
    color: var(--color-text-white);
    border-color: var(--color-border-light);
}

.btn-danger {
    background: linear-gradient(135deg, var(--color-danger), #b91c1c);
    color: #fff;
}

.btn-sm {
    padding: var(--space-1) var(--space-3);
    font-size: var(--text-xs);
    border-radius: var(--radius-sm);
}

.btn-lg {
    padding: var(--space-3) var(--space-8);
    font-size: var(--text-lg);
    border-radius: var(--radius-lg);
}

.btn-block {
    width: 100%;
    display: flex;
}

/* Google Sign-in Button */
.btn-google {
    background: #fff;
    color: #1f1f1f;
    border: 1px solid #dadce0;
    font-family: 'Inter', sans-serif;
    font-weight: 500;
    gap: var(--space-3);
    padding: var(--space-2) var(--space-3);
}

.btn-google:hover:not(:disabled) {
    background: #f8f9fa;
    box-shadow: var(--shadow-sm);
    color: #1f1f1f;
}

/* ─── Badges ─────────────────────────────────────────────────────── */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 2px var(--space-2);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 600;
    line-height: 1.5;
}

.badge-primary {
    background: var(--color-primary-glow);
    color: var(--color-primary-light);
    border: 1px solid rgba(37, 99, 235, 0.3);
}

.badge-accent {
    background: var(--color-accent-glow);
    color: var(--color-accent);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-warning {
    background: rgba(245, 158, 11, 0.15);
    color: #F59E0B;
    border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge-danger {
    background: rgba(239, 68, 68, 0.15);
    color: var(--color-danger);
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.badge-muted {
    background: var(--color-bg-3);
    color: var(--color-text-muted);
    border: 1px solid var(--color-border);
}

/* ─── Forms ──────────────────────────────────────────────────────── */
.form-group {
    margin-bottom: var(--space-4);
}

.form-label {
    display: block;
    margin-bottom: var(--space-2);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-muted);
}

.form-control {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    background: var(--color-bg-3);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-white);
    font-size: var(--text-base);
    font-family: var(--font-primary);
    transition: var(--transition-fast);
    outline: none;
}

.form-control:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-glow);
    background: var(--color-bg-4);
}

.form-control::placeholder {
    color: var(--color-text-dim);
}

.form-control:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ─── MCQ Specific Styles ────────────────────────────────────────── */
.mcq-card {
    background: var(--color-bg-2);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    margin-bottom: var(--space-4);
    transition: var(--transition-base);
    position: relative;
}

.mcq-card:hover {
    border-color: var(--color-border-light);
    box-shadow: var(--shadow-md);
}

.mcq-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: var(--color-primary-glow);
    border: 1px solid rgba(37, 99, 235, 0.3);
    border-radius: var(--radius-sm);
    font-size: var(--text-xs);
    font-weight: 700;
    color: var(--color-primary-light);
    flex-shrink: 0;
    margin-right: var(--space-3);
}

.mcq-question {
    font-size: var(--text-base);
    font-weight: 500;
    color: var(--color-text-white);
    line-height: 1.7;
    margin-bottom: var(--space-4);
    display: flex;
    align-items: flex-start;
}

.mcq-options {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    margin-bottom: var(--space-4);
}

.mcq-option {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    background: var(--color-bg-3);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-fast);
}

.mcq-option:hover {
    background: var(--color-bg-4);
    border-color: var(--color-border-light);
}

.mcq-option-letter {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 26px;
    height: 26px;
    border-radius: var(--radius-sm);
    background: var(--color-bg-4);
    border: 1px solid var(--color-border);
    font-size: var(--text-xs);
    font-weight: 700;
    color: var(--color-text-muted);
    flex-shrink: 0;
}

/* Correct Answer — always visible, green */
.mcq-correct-answer {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    background: var(--color-accent-glow);
    border: 1px solid rgba(16, 185, 129, 0.4);
    border-radius: var(--radius-md);
    margin-top: var(--space-3);
    margin-bottom: var(--space-3);
}

.mcq-correct-answer .answer-label {
    font-size: var(--text-xs);
    font-weight: 700;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    flex-shrink: 0;
}

.mcq-correct-answer .answer-text {
    color: var(--color-accent);
    font-weight: 600;
    font-size: var(--text-sm);
}

/* Explanation */
.mcq-explanation {
    display: none;
    /* Hidden by default */
    padding: var(--space-4);
    background: rgba(6, 182, 212, 0.07);
    border: 1px solid rgba(6, 182, 212, 0.2);
    border-radius: var(--radius-md);
    margin-top: var(--space-3);
    color: var(--color-text-muted);
    font-size: var(--text-sm);
    line-height: 1.8;
    animation: fadeIn 0.3s ease;
}

.mcq-explanation.show {
    display: block;
}

.btn-explanation {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: transparent;
    border: 1px dashed rgba(6, 182, 212, 0.4);
    border-radius: var(--radius-md);
    color: var(--color-info);
    font-size: var(--text-sm);
    cursor: pointer;
    transition: var(--transition-fast);
    font-family: var(--font-bengali);
}

.btn-explanation:hover {
    background: rgba(6, 182, 212, 0.1);
    border-style: solid;
}

/* ─── Reading Progress Bar ───────────────────────────────────────── */
#reading-progress {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 0%;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-info), var(--color-accent));
    z-index: 999;
    transition: width 0.1s linear;
    border-radius: 0 var(--radius-full) var(--radius-full) 0;
}

/* ─── Pagination ─────────────────────────────────────────────────── */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    flex-wrap: wrap;
    padding: var(--space-6) 0;
}

.pagination .page-item {
    display: inline-flex;
}

.pagination .page-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 38px;
    height: 38px;
    padding: 0 var(--space-3);
    border-radius: var(--radius-md);
    background: var(--color-bg-2);
    border: 1px solid var(--color-border);
    color: var(--color-text-muted);
    font-size: var(--text-sm);
    font-weight: 500;
    transition: var(--transition-fast);
    text-decoration: none;
}

.pagination .page-link:hover {
    background: var(--color-bg-3);
    border-color: var(--color-primary);
    color: var(--color-text-white);
}

.pagination .page-link.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.4);
}

.pagination .page-link.disabled {
    opacity: 0.4;
    cursor: not-allowed;
    pointer-events: none;
}

/* ─── Alerts / Flash Messages ────────────────────────────────────── */
.alert {
    padding: var(--space-4);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    border: 1px solid transparent;
    margin-bottom: var(--space-4);
    animation: slideDown 0.3s ease;
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    border-color: rgba(16, 185, 129, 0.3);
    color: #34D399;
}

.alert-danger {
    background: rgba(239, 68, 68, 0.1);
    border-color: rgba(239, 68, 68, 0.3);
    color: #F87171;
}

.alert-warning {
    background: rgba(245, 158, 11, 0.1);
    border-color: rgba(245, 158, 11, 0.3);
    color: #FCD34D;
}

.alert-info {
    background: rgba(6, 182, 212, 0.1);
    border-color: rgba(6, 182, 212, 0.3);
    color: #67E8F9;
}

/* ─── Sidebar Nav ────────────────────────────────────────────────── */
.sidebar-nav {
    padding: var(--space-4) var(--space-3);
}

.sidebar-section {
    margin-bottom: var(--space-6);
}

.sidebar-section-title {
    font-size: var(--text-xs);
    font-weight: 700;
    color: var(--color-text-dim);
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 0 var(--space-3);
    margin-bottom: var(--space-2);
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    color: var(--color-text);
    font-size: var(--text-sm);
    font-weight: 500;
    transition: var(--transition-fast);
    text-decoration: none;
}

.sidebar-link:hover {
    background: var(--color-bg-3);
    color: var(--color-text-white);
}

.sidebar-link.active {
    background: var(--color-primary-glow);
    color: var(--color-primary-light);
    border-left: 2px solid var(--color-primary);
}

.sidebar-link .icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    opacity: 0.7;
    font-size: 16px;
    /* Bootstrap Icons i element size */
    line-height: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

/* ─── Hero / Banner ──────────────────────────────────────────────── */
.hero {
    padding: var(--space-16) 0 var(--space-12);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.12) 0%, transparent 70%);
    pointer-events: none;
}

.hero-title {
    font-size: var(--text-4xl);
    font-weight: 800;
    background: linear-gradient(135deg, var(--color-text-white) 30%, var(--color-primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-4);
}

.hero-subtitle {
    font-size: var(--text-lg);
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto var(--space-8);
    font-family: var(--font-bengali);
}

/* ─── Category Grid ──────────────────────────────────────────────── */
.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: var(--space-4);
}

@media (max-width: 480px) {
    .category-grid {
        grid-template-columns: 1fr;
    }
}

.category-card {
    padding: var(--space-5);
    background: var(--color-bg-2);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: var(--transition-base);
    text-decoration: none;
    display: block;
    position: relative;
    overflow: hidden;
}

.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-info));
    opacity: 0;
    transition: var(--transition-fast);
}

.category-card:hover::before {
    opacity: 1;
}

.category-card:hover {
    border-color: var(--color-border-light);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.category-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    margin-bottom: var(--space-3);
    background: var(--color-bg-3);
}

.category-name {
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--color-text-white);
    margin-bottom: var(--space-1);
    font-family: var(--font-bengali);
}

.category-count {
    font-size: var(--text-xs);
    color: var(--color-text-dim);
}

/* ─── Ads Container ──────────────────────────────────────────────── */
.ads-container {
    width: 100%;
    text-align: center;
    margin: var(--space-6) 0;
    min-height: 90px;
}

.ads-container.ads-hidden {
    display: none;
}

/* ─── Footer ─────────────────────────────────────────────────────── */
.site-footer {
    background: var(--color-bg-2);
    border-top: 1px solid var(--color-border);
    padding: var(--space-12) 0 var(--space-6);
    margin-top: var(--space-16);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-8);
    margin-bottom: var(--space-8);
}

.footer-brand {
    font-size: var(--text-xl);
    font-weight: 800;
    color: var(--color-text-white);
    margin-bottom: var(--space-3);
}

.footer-desc {
    font-size: var(--text-sm);
    color: var(--color-text-dim);
    line-height: 1.7;
    font-family: var(--font-bengali);
}

.footer-heading {
    font-size: var(--text-sm);
    font-weight: 700;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-bottom: var(--space-3);
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.footer-links a {
    font-size: var(--text-sm);
    color: var(--color-text-dim);
    transition: var(--transition-fast);
    margin-top: -10px;
}

.footer-links a:hover {
    color: var(--color-primary-light);
}

.footer-links li:hover::before {
    content: '\F285' !important;
    font-family: bootstrap-icons !important;
}

.footer-links li::before {
    font-size: 12px;
    content: '\F234';
    font-family: bootstrap-icons !important;
    color: var(--color-primary-light);
    margin-right: 5px;

}

.footer-bottom {
    border-top: 1px solid var(--color-border);
    padding-top: var(--space-6);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-4);
}

.footer-copy {
    font-size: var(--text-xs);
    color: var(--color-text-dim);
    font-family: var(--font-bengali);
}

/* ─── Loading Spinner ────────────────────────────────────────────── */
.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: var(--radius-full);
    animation: spin 0.8s linear infinite;
}

.spinner-lg {
    width: 40px;
    height: 40px;
    border-width: 3px;
}

/* ─── Skeleton Loader ────────────────────────────────────────────── */
.skeleton {
    background: linear-gradient(90deg, var(--color-bg-2) 25%, var(--color-bg-3) 50%, var(--color-bg-2) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-md);
}

/* ─── Mobile Bottom Nav ──────────────────────────────────────────── */
.mobile-bottom-nav {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: var(--navbar-mobile-height);
    background: rgba(22, 27, 39, 0.95);
    backdrop-filter: blur(12px);
    border-top: 1px solid var(--color-border);
    z-index: 999;
    padding: 0 var(--space-2);
}

@media (max-width: 767px) {
    .mobile-bottom-nav {
        display: flex;
        align-items: center;
        justify-content: space-around;
    }

    body {
        padding-bottom: var(--navbar-mobile-height);
    }
}

.mobile-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3px;
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    color: var(--color-text-dim);
    text-decoration: none;
    font-size: 10px;
    font-weight: 500;
    transition: var(--transition-fast);
    min-width: 52px;
}

.mobile-nav-item svg {
    width: 22px;
    height: 22px;
}

.mobile-nav-item:hover,
.mobile-nav-item.active {
    color: var(--color-primary-light);
}

/* ─── Animations ─────────────────────────────────────────────────── */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-6px);
    }

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

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

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

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

@keyframes shimmer {
    0% {
        background-position: 200% 0;
    }

    100% {
        background-position: -200% 0;
    }
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

/* ─── Utility Classes ────────────────────────────────────────────── */
.text-center {
    text-align: center;
}

.text-right {
    text-align: right;
}


.text-dim {
    color: var(--color-text-dim);
}

.text-accent {
    color: var(--color-accent);
}

.text-primary {
    color: var(--color-primary-light);
}

.text-danger {
    color: var(--color-danger);
}

.text-white {
    color: var(--color-text-white);
}

.text-sm {
    font-size: var(--text-sm);
}

.text-xs {
    font-size: var(--text-xs);
}

.text-bn {
    font-family: var(--font-bengali);
}

.fw-500 {
    font-weight: 500;
}

.fw-600 {
    font-weight: 600;
}

.fw-700 {
    font-weight: 700;
}

.fw-800 {
    font-weight: 800;
}

.d-flex {
    display: flex;
}

.d-none {
    display: none !important;
}

.d-block {
    display: block;
}

.d-grid {
    display: grid;
}

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

.justify-center {
    justify-content: center;
}

.justify-between {
    justify-content: space-between;
}

.gap-2 {
    gap: var(--space-2);
}

.gap-3 {
    gap: var(--space-3);
}

.gap-4 {
    gap: var(--space-4);
}

.gap-6 {
    gap: var(--space-6);
}

.mt-2 {
    margin-top: var(--space-2);
}

.mt-4 {
    margin-top: var(--space-4);
}

.mt-6 {
    margin-top: var(--space-6);
}

.mt-8 {
    margin-top: var(--space-8);
}

.mb-2 {
    margin-bottom: var(--space-2);
}

.mb-4 {
    margin-bottom: var(--space-4);
}

.mb-6 {
    margin-bottom: var(--space-6);
}

.mb-8 {
    margin-bottom: var(--space-8);
}

.py-4 {
    padding-top: var(--space-4);
    padding-bottom: var(--space-4);
}

.py-8 {
    padding-top: var(--space-8);
    padding-bottom: var(--space-8);
}

.px-4 {
    padding-left: var(--space-4);
    padding-right: var(--space-4);
}

.rounded {
    border-radius: var(--radius-md);
}

.rounded-lg {
    border-radius: var(--radius-lg);
}

.rounded-full {
    border-radius: var(--radius-full);
}

.w-full {
    width: 100%;
}

.min-h-screen {
    min-height: 100vh;
}

.overflow-hidden {
    overflow: hidden;
}

.position-relative {
    position: relative;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* ─── Divider ────────────────────────────────────────────────────── */
.divider {
    border: none;
    border-top: 1px solid var(--color-border);
    margin: var(--space-6) 0;
}

/* ─── Section Title ──────────────────────────────────────────────── */
.section-title {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--color-text-white);
    margin-bottom: var(--space-2);
}

.section-subtitle {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--space-6);
    font-family: var(--font-bengali);
}

/* Gradient text */
.gradient-text {
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-info));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ─── Very Small Screen Fix (220px min) ──────────────────────────── */
@media (max-width: 359px) {
    .btn {
        padding: var(--space-2) var(--space-3);
        font-size: var(--text-xs);
    }

    .card-body {
        padding: var(--space-4);
    }

    .mcq-card {
        padding: var(--space-4);
    }

    .hero-title {
        font-size: var(--text-3xl);
    }

    .container {
        padding: 0 var(--space-3);
    }
}

input,
textarea {
    color: black !important;
}

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

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

/* ─── Global Hero Banner Component ───────────────────────────────── */
.hero-banner {
    position: relative;
    overflow: hidden;
    color: #ffffff;
    border-radius: var(--radius-lg, 16px);
    border: 1px solid var(--color-border);
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.15) 0%, rgba(99, 102, 241, 0.15) 100%), var(--color-surface);
}

/* Section Specific Gradient Variants */
.hero-banner-jobs {
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.2) 0%, rgba(99, 102, 241, 0.2) 100%), var(--color-surface);
}

.hero-banner-mcq {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2) 0%, rgba(168, 85, 247, 0.2) 100%), var(--color-surface);
}

.hero-banner-exam {
    background: linear-gradient(135deg, rgba(168, 85, 247, 0.2) 0%, rgba(99, 102, 241, 0.2) 100%), var(--color-surface);
}

.hero-banner-cv {
    background: linear-gradient(135deg, rgba(236, 72, 153, 0.2) 0%, rgba(99, 102, 241, 0.2) 100%), var(--color-surface);
}

.hero-banner-articles {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.2) 0%, rgba(147, 51, 234, 0.2) 100%), var(--color-surface);
}

/* Hero Watermark Decorative Icon */
.hero-banner-icon {
    font-size: clamp(4.5rem, 8vw, 6rem);
    opacity: 0.7;
    line-height: 1;
    pointer-events: none;
    user-select: none;
}

/* ─── Form Input & Textarea Placeholder Styling ──────────────────── */
/* Make placeholders clearly legible and darker across all inputs/textareas */
input::placeholder,
textarea::placeholder,
select::placeholder,
.form-control::placeholder,
.form-select::placeholder {
    color: #838892 !important;
    /* Crisp, dark slate gray */
    opacity: 1 !important;
    /* Ensure full opacity in Firefox */
}

/* Vendor Prefixes for Cross-Browser Compatibility */
input::-webkit-input-placeholder,
textarea::-webkit-input-placeholder,
.form-control::-webkit-input-placeholder {
    color: #838892 !important;
    opacity: 1 !important;
}

input::-moz-placeholder,
textarea::-moz-placeholder,
.form-control::-moz-placeholder {
    color: #838892 !important;
    opacity: 1 !important;
}

input:-ms-input-placeholder,
textarea:-ms-input-placeholder,
.form-control:-ms-input-placeholder {
    color: #838892 !important;
    opacity: 1 !important;
}

/* Specific styling for bg-body-tertiary and light form-controls */
.form-control.bg-body-tertiary::placeholder,
.form-control.bg-light::placeholder,
.form-control.bg-white::placeholder,
input.bg-body-tertiary::placeholder,
textarea.bg-body-tertiary::placeholder {
    color: #838892 !important;
    /* Extra contrast dark slate for light input backgrounds */
    opacity: 1 !important;
}

/* Maintain proper contrast for inputs with dark backgrounds */
.form-control.bg-dark::placeholder,
input.bg-dark::placeholder,
textarea.bg-dark::placeholder {
    color: #838892 !important;
    /* Readable cool silver for dark inputs */
    opacity: 1 !important;
}

@media (max-width: 567px) {
    .layout-content {
        padding: 6px;
    }

    .site-footer {
        padding: 20px 10px;
    }

    #mcq-list {
        gap: 2px !important;

    }

    /* .no_count */
    .cq-card .no_count {
        position: absolute;
        top: 0;
        left: 0;
        width: 100;

    }

    .cq-card .no_count.bg-primary {
        background-color: rgba(var(--bs-dark-rgb), var(--bs-bg-opacity)) !important;
        border: 1px solid #dee2e647 !important;
    }

    .cq-card .cq_explaination,
    .cq-card .questions-list .cq_q,
    .cq-card .questions-list .cq_ans {
        font-size: 13px !important;
    }

    .btn-google span,
    .lang-switch-wrap {
        display: none;
    }

    .container {
        padding: 1px !important;
    }

    .btn-google {
        padding: 5px 5px;
    }


}