/* ========================================================
   KHUDKIBOOK MODERN DESIGN SYSTEM & MASTER STYLESHEET
   Light Professional Theme · Indigo Accent
   Optimized for AdSense, SEO & Clean Student-First UX
   ======================================================== */

:root {
    /* Color Palette - Light Professional */
    --bg-page: #f6f8fc;
    --bg-surface: #ffffff;
    --bg-card: #ffffff;
    --bg-card-hover: #fbfcff;
    --bg-glass: rgba(99, 102, 241, 0.06);
    --bg-soft: #eef1fb;

    /* Indigo Brand Accent */
    --accent: #4f46e5;
    --accent-hover: #6366f1;
    --accent-dark: #4338ca;
    --accent-gradient: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    --accent-glow: rgba(79, 70, 229, 0.18);

    /* Supporting palette */
    --indigo-100: #e0e7ff;
    --success: #16a34a;
    --success-soft: #dcfce7;
    --danger: #dc2626;

    /* Typography Colors */
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --text-inverse: #ffffff;

    /* Borders & Shadows */
    --border: #e5e9f2;
    --border-accent: rgba(79, 70, 229, 0.35);
    --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.08);
    --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.10);
    --shadow-lg: 0 18px 40px rgba(15, 23, 42, 0.14);
    --shadow-glow: 0 8px 24px rgba(79, 70, 229, 0.22);

    /* Legacy Variable Fallbacks (kept for inline-generated styles) */
    --primaryclr: #4f46e5;
    --pagebgclr: #f6f8fc;
    --secondary: #475569;
    --borderclr: #e5e9f2;
    /* Legacy dark fallbacks used by some inline styles */
    --card-bg: #ffffff;
    --text: #0f172a;
    --btn-hover: #6366f1;
}

/* Base Resets */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    transition: background-color 0.2s ease, border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    background-color: var(--bg-page);
    color: var(--text-primary);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    overflow-x: hidden;
    background-image:
        radial-gradient(circle at 15% 0%, rgba(79, 70, 229, 0.06) 0%, transparent 45%),
        radial-gradient(circle at 90% 90%, rgba(124, 58, 237, 0.05) 0%, transparent 45%);
    background-attachment: fixed;
    line-height: 1.6;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Outfit', 'Inter', sans-serif;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

a {
    color: var(--accent);
    text-decoration: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ========================================================
   NAVIGATION BAR
   ======================================================== */
nav#nav, .navbar-root {
    width: 100%;
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 1px 8px rgba(15, 23, 42, 0.04);
}

.navwrap {
    max-width: 1240px;
    margin: 0 auto;
    padding: 10px 24px;
    display: flex;
    align-items: center;
    gap: 8px;
    position: relative;
    overflow: hidden;
}

.brand-link {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.lohh {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    object-fit: cover;
    box-shadow: 0 0 0 1px rgba(79, 70, 229, 0.15);
}

.textl {
    font-family: 'Outfit', sans-serif;
    font-size: 1.4rem;
    font-weight: 800;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.03em;
}

.nav-links-desktop {
    display: flex;
    list-style: none;
    align-items: center;
    gap: 6px;
    margin-left: auto;
    flex-shrink: 0;
}

.nav-item-link, .nav-dropdown-btn {
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.92rem;
    padding: 9px 15px;
    border-radius: 10px;
    background: transparent;
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: inherit;
}

.nav-item-link:hover, .nav-dropdown-btn:hover {
    color: var(--accent);
    background: var(--bg-soft);
}

.nav-chevron {
    font-size: 0.72rem;
    transition: transform 0.2s ease;
}

/* Mega Dropdown */
.nav-dropdown-wrapper {
    position: relative;
}

.nav-dropdown-panel {
    display: none;
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    width: 680px;
    max-height: 70vh;
    overflow-y: auto;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    border-radius: 18px;
    padding: 20px;
    margin-top: 10px;
    z-index: 1001;
}

.nav-dropdown-wrapper:hover .nav-dropdown-panel {
    display: block;
    animation: dropdownFade 0.2s ease-out;
}

.nav-dropdown-wrapper:hover .nav-chevron {
    transform: rotate(180deg);
}

@keyframes dropdownFade {
    from { opacity: 0; transform: translate(-50%, 8px); }
    to { opacity: 1; transform: translate(-50%, 0); }
}

.dropdown-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.dropdown-branch-item {
    background: var(--bg-page);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 12px 14px;
}

.dropdown-branch-item:hover {
    border-color: var(--accent);
    background: var(--bg-soft);
}

.branch-title {
    color: var(--text-primary);
    font-size: 0.95rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
    text-decoration: none;
}

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

.sem-quick-links {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.sem-quick-links a {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 0.78rem;
    padding: 3px 9px;
    border-radius: 6px;
    font-weight: 600;
    text-decoration: none;
}

.sem-quick-links a:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: #ffffff;
}

/* Mobile Navigation Actions */
.nav-right-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: auto;
}

.mobile-nav-btn {
    display: none;
    background: var(--bg-soft, #eef1fb);
    border: 1px solid var(--border, #e5e9f2);
    color: var(--text-primary, #0f172a);
    width: 40px;
    height: 40px;
    min-width: 40px;
    min-height: 40px;
    border-radius: 10px;
    font-size: 1.05rem;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    padding: 0;
    transition: all 0.2s ease;
    box-sizing: border-box;
}

.mobile-nav-btn:hover {
    background: var(--border, #e5e9f2);
    color: var(--accent, #4f46e5);
}

.mobile-toggle-btn {
    display: none;
}

/* Mobile Off-Canvas Drawer */
.mobile-drawer {
    position: fixed;
    top: 0;
    right: 0;
    width: 85%;
    max-width: 380px;
    height: 100vh;
    background: var(--bg-surface);
    box-shadow: -10px 0 30px rgba(15, 23, 42, 0.15);
    border-left: 1px solid var(--border);
    z-index: 10000;
    padding: 24px;
    overflow-y: auto;
    animation: drawerSlide 0.25s ease-out;
}

@keyframes drawerSlide {
    from { transform: translateX(100%); }
    to { transform: translateX(0); }
}

.drawer-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 18px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 20px;
}

.drawer-close-btn {
    background: var(--bg-soft);
    border: 1px solid var(--border);
    color: var(--text-primary);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    font-size: 1.4rem;
    cursor: pointer;
}

.drawer-link {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-secondary);
    font-size: 1.05rem;
    font-weight: 600;
    padding: 12px 14px;
    border-radius: 10px;
    margin-bottom: 8px;
    text-decoration: none;
}

.drawer-link:hover {
    background: var(--bg-soft);
    color: var(--accent);
}

.drawer-section-title {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--accent);
    margin: 20px 0 10px 6px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.drawer-accordion {
    margin-bottom: 8px;
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
}

.accordion-header {
    width: 100%;
    background: var(--bg-page);
    border: none;
    color: var(--text-primary);
    padding: 12px 14px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    font-family: inherit;
}

.accordion-body {
    display: none;
    flex-direction: column;
    padding: 10px 14px;
    background: var(--bg-soft);
    gap: 8px;
}

.accordion-body a {
    color: var(--text-secondary);
    font-size: 0.88rem;
    padding: 6px 10px;
    border-radius: 6px;
    text-decoration: none;
}

.accordion-body a:hover {
    color: var(--accent);
    background: rgba(255, 255, 255, 0.6);
}

@media (max-width: 900px) {
    .nav-links-desktop {
        display: none !important;
    }
    .mobile-nav-btn {
        display: flex !important;
    }
    .navwrap .site-search-wrap:not(.expanded) {
        display: none !important;
    }
    .navwrap {
        padding: 10px 16px;
        justify-content: space-between;
    }
}

/* ========================================================
   HEADER & BREADCRUMBS
   ======================================================== */
header.homehead, header {
    width: 100%;
    max-width: 1240px;
    margin: 20px auto 10px;
    padding: 10px 24px;
    text-align: center;
}

.homehead h1, .ph748 {
    font-size: clamp(2rem, 4.5vw, 3.1rem);
    line-height: 1.15;
    margin-bottom: 12px;
    background: linear-gradient(135deg, #1e1b4b 20%, var(--accent) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.homehead p {
    font-size: 1.08rem;
    color: var(--text-muted);
    max-width: 680px;
    margin: 0 auto;
}

/* Breadcrumbs */
.nv759 {
    width: 100%;
    max-width: 1240px;
    margin: 0 auto 16px;
    padding: 0 24px;
}

.nvl153 {
    display: inline-flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    background: var(--bg-surface);
    padding: 8px 18px;
    border-radius: 9999px;
    border: 1px solid var(--border);
    font-size: 0.88rem;
    box-shadow: var(--shadow-sm);
}

.nvi751 {
    color: var(--text-muted);
    font-weight: 500;
}

.nvi751:hover {
    color: var(--accent);
}

.nvsep729 {
    color: #cbd5e1;
}

#atnvli953 {
    color: var(--accent);
    font-weight: 600;
}

/* ========================================================
   ADSENSE POLICY-COMPLIANT AD SLOTS (High CTR & 0 CLS)
   ======================================================== */
.ad-slot-wrapper {
    width: 100%;
    max-width: 1240px;
    margin: 24px auto;
    padding: 0 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    box-sizing: border-box;
}

.ad-label {
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--text-muted, #64748b);
    opacity: 0.7;
    margin-bottom: 6px;
    text-align: center;
}

.ad-container {
    width: 100%;
    min-height: 90px;
    background: rgba(248, 250, 252, 0.6);
    border: 1px dashed rgba(203, 213, 225, 0.7);
    border-radius: 12px;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    box-sizing: border-box;
}

.ad-leaderboard {
    max-width: 970px;
    min-height: 90px;
}

.ad-in-content {
    max-width: 800px;
    min-height: 250px;
    margin: 15px auto;
}

.ad-bottom-banner {
    max-width: 970px;
    min-height: 90px;
    margin: 20px auto 30px;
}

@media (max-width: 768px) {
    /* Completely hide top ad on mobile for a clean, distraction-free UX */
    .ad-top-wrapper,
    .kb-ad-topLeaderboard,
    .ad-slot-wrapper:has(.ad-leaderboard),
    .ad-slot-wrapper:has([data-ad-slot-name="topLeaderboard"]) {
        display: none !important;
    }
    .ad-slot-wrapper {
        margin: 16px auto;
        padding: 0 12px;
    }
    .ad-bottom-banner {
        min-height: 60px;
    }
    .ad-in-content {
        min-height: 250px;
    }
}

/* ========================================================
   MAIN CONTENT & CARDS (Home & Branch Pages)
   ======================================================== */
main {
    width: 100%;
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 24px 60px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.domain-section {
    width: 100%;
    max-width: 1100px;
    margin: 10px auto 35px;
    position: relative;
}

.kl789123 {
    font-size: 1.35rem;
    font-weight: 700;
    margin: 15px auto 20px;
    text-align: center;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: fit-content;
    max-width: 95%;
    position: sticky;
    top: 60px;
    z-index: 800;
    background: rgba(246, 248, 252, 0.94);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    padding: 10px 24px;
    border-radius: 9999px;
    border: 1px solid rgba(229, 233, 242, 0.9);
    box-shadow: 0 4px 16px rgba(15, 23, 42, 0.05);
}

.kl789123 i {
    color: var(--accent);
    flex-shrink: 0;
}

@media (max-width: 768px) {
    .domain-section {
        margin: 5px auto 25px;
    }
    .kl789123 {
        font-size: 1.15rem;
        top: 54px;
        padding: 8px 16px;
        margin: 10px auto 14px;
        border-radius: 12px;
        width: calc(100% - 24px);
        max-width: 440px;
        box-sizing: border-box;
    }
    .kl789123::before, .kl789123::after {
        display: none !important;
    }
    .kl789123 i {
        margin-right: 6px;
    }
}

.ab12345 {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.branch-grid-container {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.maniwrraper {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    width: 100%;
    max-width: 1100px;
}

/* Branch Grid Collapsible (Mobile) */
.kb-branch-toggle-wrap {
    display: none;
    width: 100%;
    text-align: center;
    margin: 16px auto 8px;
}

.kb-branch-toggle-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 24px;
    background: var(--bg-surface, #ffffff);
    border: 1.5px solid var(--border-accent, #c7d2fe);
    color: var(--accent, #4f46e5);
    border-radius: 9999px;
    font-size: 0.92rem;
    font-weight: 700;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: all 0.2s ease;
    font-family: inherit;
}

.kb-branch-toggle-btn:hover {
    background: var(--bg-soft, #eef1fb);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

@keyframes fadeInBranch {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 768px) {
    .kb-branch-toggle-wrap {
        display: block !important;
    }
    .maniwrraper:not(.is-expanded) .kb-branch-extra,
    .branch-grid-container:not(.is-expanded) .kb-branch-extra {
        display: none !important;
    }
    .maniwrraper.is-expanded .kb-branch-extra,
    .branch-grid-container.is-expanded .kb-branch-extra {
        display: flex !important;
        animation: fadeInBranch 0.25s ease-out;
    }
}

.navlink {
    background: linear-gradient(145deg, #eef1fb 0%, #ffffff 60%, #f5f3ff 100%);
    background-size: cover;
    background-position: center;
    border: 1.5px solid var(--border);
    border-radius: 18px;
    padding: 28px 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--accent-dark);
    font-size: 1.2rem;
    font-weight: 700;
    text-align: center;
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
    cursor: pointer;
    min-height: 110px;
}

.navlink::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 85% 15%, rgba(79,70,229,0.12) 0%, transparent 55%);
    z-index: 1;
}

.navlink:hover {
    transform: translateY(-4px);
    border-color: var(--accent);
    box-shadow: var(--shadow-glow);
}

.navlink span, .navlink, .navlink div {
    position: relative;
    z-index: 2;
}

/* Semester choice cards on branch homepages - strong contrast vs bg */
.sem-card-link {
    background: linear-gradient(150deg, #ffffff 0%, #f4f2ff 100%);
    border: 1.5px solid var(--border);
    min-height: 120px;
    padding: 24px 18px;
    text-align: left;
    align-items: flex-start;
    justify-content: flex-start;
}

.sem-card-title {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--accent-dark);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 10px;
    letter-spacing: -0.02em;
}

.sem-card-title i {
    color: var(--accent);
    font-size: 1.1rem;
    background: var(--indigo-100);
    width: 34px;
    height: 34px;
    line-height: 34px;
    text-align: center;
    border-radius: 10px;
}

.sem-card-sub {
    font-size: 0.9rem;
    color: var(--accent);
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.sem-card-link:hover .sem-card-sub {
    color: var(--accent-hover);
}

/* ========================================================
   SUBJECT / BOOK CARDS GRID
   ======================================================== */
.abc123456 {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 16px;
    display: flex;
    gap: 16px;
    align-items: center;
    width: 340px;
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.abc123456:hover {
    transform: translateY(-4px);
    border-color: var(--accent);
    background: var(--bg-card-hover);
    box-shadow: var(--shadow-md);
}

.i12345 {
    width: 76px;
    height: 104px;
    border-radius: 8px;
    object-fit: cover;
    box-shadow: 0 4px 12px rgba(15, 23, 42, 0.15);
    flex-shrink: 0;
    background: #eef1fb;
}

.mali147852 {
    display: flex;
    flex-direction: column;
    gap: 4px;
    flex: 1;
    min-width: 0;
}

.bn159, .bn1599 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.25;
    white-space: normal;
}

.d111, .md111 {
    font-size: 0.82rem;
    color: var(--text-muted);
    font-weight: 500;
}

.d212 {
    font-size: 0.78rem;
    color: var(--accent);
    font-weight: 600;
}

.kpb789123 {
    align-self: flex-start;
    margin-top: 6px;
    background: var(--accent-gradient);
    color: #ffffff;
    border: none;
    padding: 5px 14px;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 700;
    cursor: pointer;
    box-shadow: var(--accent-glow);
}

/* ========================================================
   BOOK PAGE SHOWCASE & ACTIONS
   ======================================================== */
.mc759351 {
    display: flex;
    flex-direction: column;
    gap: 20px;
    align-items: stretch;
    justify-content: flex-start;
    flex-wrap: nowrap;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 24px;
    width: 100%;
    max-width: 960px;
    margin: 20px auto;
    box-shadow: var(--shadow-md);
}

/* Year selector bar pinned to the top of the book showcase */
.kb-top-year {
    width: 100%;
}

.kb-top-year .year-selector {
    justify-content: center;
    background: var(--bg-soft);
    border: 1.5px solid var(--border-accent);
    border-radius: 14px;
    padding: 10px 14px;
    margin: 0;
}

.kb-top-year .year-selector.inner {
    justify-content: center;
}

.kb-top-year .year-selector-label {
    font-size: 0.95rem;
}

.year-current-chip {
    display: inline-flex;
    align-items: center;
    background: var(--accent);
    color: #ffffff;
    font-weight: 700;
    padding: 6px 16px;
    border-radius: 8px;
    font-size: 0.98rem;
}

/* Book showcase body (cover + info) as a horizontal flex row */
.mc759351body {
    display: flex;
    gap: 40px;
    align-items: flex-start;
    justify-content: center;
    flex-wrap: wrap;
    width: 100%;
}

.mc7593512, .main-cover {
    width: 240px;
    flex-shrink: 0;
}

.mc7593512345 {
    width: 100%;
    height: 330px;
    object-fit: cover;
    border-radius: 14px;
    box-shadow: 0 16px 36px rgba(15, 23, 42, 0.18), 0 0 25px rgba(79, 70, 229, 0.12);
    border: 1px solid var(--border);
}

.mac75935, .main-info {
    flex: 1;
    min-width: 280px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.mac75935 h1 {
    font-size: clamp(1.8rem, 3.5vw, 2.4rem);
    line-height: 1.15;
    color: var(--text-primary);
    background: none;
    -webkit-text-fill-color: initial;
}

/* Badges */
.badge-group {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 8px;
}

.badge {
    background: var(--bg-soft);
    border: 1px solid var(--border);
    padding: 4px 12px;
    border-radius: 9999px;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.badge.badge-accent {
    background: var(--indigo-100);
    border-color: var(--border-accent);
    color: var(--accent-dark);
}

/* Action Buttons */
.materials-section {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 15px;
}

/* Year Selector */
.year-selector {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 18px;
    padding: 10px 14px;
    background: var(--bg-page);
    border: 1px solid var(--border);
    border-radius: 12px;
}

.year-selector-label {
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--text-secondary);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.year-selector-label i {
    color: var(--accent);
}

.mdbtn {
    background: var(--bg-surface);
    color: var(--text-primary);
    border: 1.5px solid var(--border);
    padding: 12px 24px;
    border-radius: 12px;
    font-size: 0.98rem;
    font-weight: 700;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    box-shadow: var(--shadow-sm);
    font-family: inherit;
}

.mdbtn:hover {
    background: var(--accent-gradient);
    color: #ffffff;
    border-color: transparent;
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.shrbtn {
    background: var(--bg-soft);
    color: var(--text-muted);
    border: 1px solid var(--border);
    padding: 12px 20px;
    border-radius: 12px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    font-family: inherit;
}

.shrbtn:hover {
    color: var(--accent);
    background: var(--indigo-100);
    border-color: var(--accent);
}

/* ========================================================
   SEMESTER SYLLABUS TABLE
   ======================================================== */
.sydrp {
    width: 100%;
    max-width: 960px;
    margin: 20px auto;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 24px;
    box-shadow: var(--shadow-sm);
}

.syhdd {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

table#table {
    width: 100%;
    border-collapse: collapse;
    display: table;
}

table#table th {
    background: var(--bg-soft);
    color: var(--text-secondary);
    text-align: left;
    padding: 12px 16px;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--border);
}

table#table td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
    font-size: 0.95rem;
    color: var(--text-secondary);
}

table#table tr:hover td {
    background: var(--bg-soft);
}

.ssn {
    color: var(--text-primary);
    font-weight: 600;
    text-decoration: none;
}

.ssn:hover {
    color: var(--accent);
    text-decoration: underline;
}

/* ========================================================
   FOOTER & FEEDBACK
   ======================================================== */
footer#footer {
    width: 100%;
    background: #1e1b4b;
    color: #e0e7ff;
    border-top: 1px solid #312e81;
    margin-top: auto;
    padding: 50px 24px 30px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.ftrreviwwrap {
    width: 100%;
    max-width: 1100px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid #312e81;
    border-radius: 20px;
    padding: 35px;
    margin-bottom: 30px;
}

.fotthead {
    font-size: 1.2rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 12px;
}

.aboutdesc {
    color: #a5b4fc;
    font-size: 0.92rem;
    line-height: 1.6;
}

.ftrreviwwrap input, .ftrreviwwrap textarea {
    width: 100%;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid #4338ca;
    color: #ffffff;
    border-radius: 10px;
    padding: 12px;
    font-size: 0.9rem;
    margin-bottom: 10px;
}

.ftrreviwwrap input::placeholder, .ftrreviwwrap textarea::placeholder {
    color: #a5b4fc;
    opacity: 0.6;
}

.ftrreviwwrap input:focus, .ftrreviwwrap textarea:focus {
    outline: none;
    border-color: var(--accent-hover);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.25);
}

.ftrreviwwrap button#postfeed {
    background: var(--accent-gradient);
    color: #ffffff;
    border: none;
    padding: 12px;
    border-radius: 10px;
    font-weight: 700;
    font-size: 0.95rem;
    cursor: pointer;
    width: 100%;
}

.ftrreviwwrap button#postfeed:hover {
    filter: brightness(1.08);
    box-shadow: var(--shadow-glow);
}

.social .col {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.social .col a {
    color: #c7d2fe;
    font-size: 0.95rem;
}

.social .col a:hover {
    color: #ffffff;
}

/* ========================================================
   RECOMMENDATIONS & RELATED SUBJECTS GRID
   ======================================================== */
.rec-module {
    width: 100%;
    max-width: 1100px;
    margin: 40px auto 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.rec-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 18px;
    width: 100%;
    margin-top: 15px;
}

.rec-book-card {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 16px;
    display: flex;
    gap: 16px;
    align-items: center;
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
    overflow: hidden;
    color: inherit;
}

.rec-book-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent);
    background: var(--bg-card-hover);
    box-shadow: var(--shadow-md);
}

.rec-card-cover {
    width: 72px;
    height: 98px;
    flex-shrink: 0;
    border-radius: 8px;
    overflow: hidden;
    background: #eef1fb;
    box-shadow: 0 4px 10px rgba(15, 23, 42, 0.12);
}

.rec-card-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.rec-card-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
    flex: 1;
    min-width: 0;
}

.rec-card-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.25;
    white-space: normal;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.rec-card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin: 4px 0;
}

.rec-meta-badge {
    font-size: 0.75rem;
    color: var(--text-muted);
    background: var(--bg-soft);
    padding: 2px 6px;
    border-radius: 4px;
}

.rec-meta-credit {
    font-size: 0.75rem;
    color: var(--accent-dark);
    background: var(--indigo-100);
    padding: 2px 6px;
    border-radius: 4px;
    font-weight: 600;
}

.rec-card-btn {
    align-self: flex-start;
    background: var(--accent-gradient);
    color: #ffffff;
    font-size: 0.78rem;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 6px;
    margin-top: 4px;
}

/* Semester Switcher Pills */
.sem-switcher-section {
    width: 100%;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 24px;
    margin-top: 40px;
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.sem-switcher-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.sem-switcher-pills {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
}

.sem-switcher-pill {
    background: var(--bg-soft);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    padding: 8px 18px;
    border-radius: 9999px;
    font-size: 0.9rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}

.sem-switcher-pill:hover {
    background: var(--accent-gradient);
    color: #ffffff;
    border-color: transparent;
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.sem-switcher-pill.active {
    background: var(--accent);
    color: #ffffff;
    border-color: transparent;
    font-weight: 700;
}

/* ========================================================
   NEW: CSS-GENERATED BOOK COVERS
   (Realistic book cover when no image is available)
   ======================================================== */
.bookcover {
    position: relative;
    width: 100%;
    height: 100%;
    min-width: 0;
    border-radius: inherit;
    overflow: hidden;
    background: linear-gradient(160deg, #4f46e5 0%, #7c3aed 55%, #1e1b4b 130%);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    box-shadow: inset 0 0 0 1px rgba(255,255,255,0.12);
    isolation: isolate;
}

.bookcover::before {
    content: "";
    position: absolute;
    top: 0; left: 0; bottom: 0;
    width: 8px;
    background: linear-gradient(180deg, rgba(255,255,255,0.35), rgba(255,255,255,0.08));
    filter: blur(0.5px);
}

.bookcover-ribbon {
    position: absolute;
    top: 14px;
    right: -34px;
    transform: rotate(45deg);
    width: 110px;
    background: rgba(255,255,255,0.18);
    color: #fff;
    text-align: center;
    font-size: 0.5rem;
    letter-spacing: 0.08em;
    padding: 2px 0;
    text-transform: uppercase;
}

.bookcover-top {
    padding: 10px 12px 0;
    color: #fff;
}

.bookcover-brand {
    font-size: 0.55rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    opacity: 0.9;
    border-bottom: 1px solid rgba(255,255,255,0.35);
    padding-bottom: 3px;
    display: inline-block;
}

.bookcover-middle {
    padding: 0 14px;
    color: #fff;
    display: flex;
    flex-direction: column;
    gap: 2px;
    flex: 1;
    justify-content: center;
}

.bookcover-title {
    font-family: 'Outfit', sans-serif;
    font-weight: 800;
    line-height: 1.15;
    display: -webkit-box;
    -webkit-line-clamp: 4;
    -webkit-box-orient: vertical;
    overflow: hidden;
    overflow-wrap: break-word;
    word-break: break-word;
    hyphens: auto;
}

.bookcover-meta {
    font-size: 0.6rem;
    opacity: 0.85;
    margin-top: 4px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 100%;
}

.bookcover-bottom {
    padding: 0 14px 10px;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 6px;
    font-size: 0.55rem;
    opacity: 0.9;
    min-width: 0;
}

.bookcover-bottom .bc-rule {
    flex: 1;
    height: 0;
    border-top: 1px solid rgba(255,255,255,0.35);
    margin: 0 8px;
}

/* Compact cover for recommendation cards */
.rec-card-cover .bookcover {
    border-radius: 6px;
    font-size: 0.72em;
}
.rec-card-cover .bookcover-title { -webkit-line-clamp: 3; }
.rec-card-cover .bookcover-top { padding: 6px 10px 0; }
.rec-card-cover .bookcover-middle { padding: 0 10px; }
.rec-card-cover .bookcover-bottom { padding: 0 10px 6px; }
.rec-card-cover .bookcover-ribbon { top: 8px; font-size: 0.38rem; width: 84px; right: -30px; }

/* Cover for the book-card (i12345) grid */
.i12345 .bookcover { border-radius: 6px; font-size: 0.68em; }
.i12345 .bookcover-brand { font-size: 0.5em; }
.i12345 .bookcover-title { -webkit-line-clamp: 4; font-size: 1.05em; }
.i12345 .bookcover-ribbon { display: none; }

/* Showcase cover on the subject page */
.kb-showcase-cover {
    width: 100%;
    height: 330px;
    border-radius: 14px;
    overflow: hidden;
    box-shadow: 0 16px 36px rgba(15, 23, 42, 0.18), 0 0 25px rgba(79, 70, 229, 0.12);
    border: 1px solid var(--border);
    font-size: 1.35em;
}
.kb-showcase-cover .bookcover-title {
    font-size: 1.5em;
    -webkit-line-clamp: 6;
}
.kb-showcase-cover .bookcover-brand { font-size: 0.9em; }
.kb-showcase-cover .bookcover-ribbon { top: 20px; font-size: 0.6rem; width: 130px; right: -38px; }

/* Fix book image overflow in containers */
.rec-card-cover .bookcover,
.i12345 .bookcover,
.kb-showcase-cover .bookcover {
    width: 100%;
    height: 100%;
    min-height: 0;
}

@media (max-width: 500px) {
    .kb-showcase-cover { height: 260px; font-size: 1.05em; }
    .kb-showcase-cover .bookcover-title { font-size: 1.3em; }
}

/* ========================================================
   NEW: GLOBAL SEARCH BAR
   ======================================================== */
.site-search-wrap {
    flex: 1 1 auto;
    position: relative;
    margin: 0 12px;
    max-width: 420px;
    min-width: 180px;
}

.site-search {
    width: 100%;
    display: flex;
    align-items: center;
    background: var(--bg-page);
    border: 1.5px solid var(--border);
    border-radius: 9999px;
    padding: 0 6px 0 14px;
    transition: border-color 0.2s;
}

.site-search:focus-within {
    border-color: var(--accent);
    box-shadow: var(--accent-glow);
}

.site-search i {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.site-search input {
    border: none;
    background: transparent;
    padding: 9px 10px;
    font-size: 0.9rem;
    color: var(--text-primary);
    width: 100%;
    outline: none;
    font-family: inherit;
}

.site-search input::placeholder {
    color: var(--text-muted);
}

.site-search button {
    background: var(--accent);
    border: none;
    color: #fff;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    cursor: pointer;
    flex-shrink: 0;
}

.site-search button:hover {
    background: var(--accent-hover);
}

.kb-search-close {
    background: var(--bg-soft);
    color: var(--text-secondary);
    display: none !important;
}

.kb-search-close:hover {
    background: var(--bg-soft);
    color: var(--text-primary);
}

/* ========================================================
   MOBILE RESPONSIVE SEARCH:
   Collapse to a search icon; tapping expands full width.
   ======================================================== */
@media (max-width: 900px) {
    .navwrap .site-search-wrap {
        max-width: 44px;
        min-width: 44px;
        width: 44px;
        margin: 0 4px;
        flex: 0 0 44px;
    }
    .navwrap .site-search {
        padding: 0;
        justify-content: center;
        border: none;
        background: transparent;
        border-radius: 10px;
        cursor: pointer;
    }
    .navwrap .site-search:focus-within {
        border-color: transparent;
        box-shadow: none;
    }
    .navwrap .site-search input,
    .navwrap .site-search button#kb-search-submit {
        display: none;
    }
    .navwrap .site-search i.kb-search-icon-open {
        color: var(--text-primary);
        font-size: 1.05rem;
        padding: 11px;
    }

    /* Expanded: full-width search bar overlaying the nav row */
    .site-search-wrap.expanded {
        position: absolute;
        left: 12px;
        right: 12px;
        top: 50%;
        transform: translateY(-50%);
        max-width: none;
        min-width: 0;
        width: auto;
        flex: 1 1 auto;
        margin: 0;
        z-index: 1300;
    }
    .site-search-wrap.expanded .site-search {
        background: var(--bg-page);
        border: 1.5px solid var(--border);
        border-radius: 9999px;
        padding: 0 6px 0 14px;
        justify-content: flex-start;
        cursor: text;
    }
    .site-search-wrap.expanded .site-search:focus-within {
        border-color: var(--accent);
        box-shadow: var(--accent-glow);
    }
    .site-search-wrap.expanded .site-search input,
    .site-search-wrap.expanded .site-search button#kb-search-submit {
        display: block;
    }
    .site-search-wrap.expanded .site-search input {
        padding: 9px 10px;
        font-size: 0.9rem;
    }
    .site-search-wrap.expanded .site-search button#kb-search-submit {
        display: flex;
        align-items: center;
        justify-content: center;
        background: var(--accent);
        color: #fff;
        width: 34px;
        height: 34px;
        border-radius: 50%;
        cursor: pointer;
        transform: none;
    }
    .site-search-wrap.expanded .kb-search-close {
        display: flex !important;
        align-items: center;
        justify-content: center;
        width: 30px;
        height: 30px;
        border-radius: 50%;
        margin-left: 2px;
    }
    .site-search-wrap.expanded .site-search i.kb-search-icon-open {
        color: var(--text-muted);
        font-size: 0.85rem;
        padding: 0;
    }
    .search-results {
        left: 12px;
        right: 12px;
    }
    .navwrap:has(.site-search-wrap.expanded) {
        overflow: visible;
    }
    .site-search-wrap.expanded .search-results {
        left: 0;
        right: 0;
        top: calc(100% + 8px);
        max-height: calc(100vh - 90px);
    }
}

.search-results {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 14px;
    box-shadow: var(--shadow-lg);
    max-height: 60vh;
    overflow-y: auto;
    display: none;
    z-index: 1200;
}

.search-results.show {
    display: block;
}

.search-results a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border);
}

.search-results a:last-child {
    border-bottom: none;
}

.search-results a:hover {
    background: var(--bg-soft);
}

.search-results a img, .search-results a .sr-cover {
    width: 34px;
    height: 44px;
    border-radius: 5px;
    object-fit: cover;
    flex-shrink: 0;
    background: var(--indigo-100);
}

.search-results .sr-title {
    font-weight: 600;
    font-size: 0.9rem;
}

.search-results .sr-sub {
    font-size: 0.78rem;
    color: var(--text-muted);
}

.search-results .no-result {
    padding: 18px;
    text-align: center;
    color: var(--text-muted);
}

@media (max-width: 1100px) {
    .site-search-wrap {
        max-width: 280px;
        min-width: 140px;
    }
    .site-search input {
        padding: 7px 8px;
        font-size: 0.85rem;
    }
}

/* ========================================================
   NEW: HERO / STATS / CTA BANNER
   ======================================================== */
.hero-banner {
    width: 100%;
    max-width: 1160px;
    margin: 10px auto 30px;
    padding: 0 24px;
}

.hero-inner {
    border-radius: 24px;
    padding: 44px 40px;
    color: #fff;
    background:
        radial-gradient(circle at 90% 10%, rgba(124,58,237,0.4) 0%, transparent 40%),
        linear-gradient(135deg, #1e1b4b 0%, #4f46e5 60%, #7c3aed 100%);
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.hero-inner::after {
    content: "";
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='40' height='40' viewBox='0 0 40 40' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.06'%3E%3Cpath d='M0 38.59l2.83-2.83 1.41 1.41L1.41 40H0v-1.41zM0 1.4l2.83 2.83 1.41-1.41L1.41 0H0v1.41zM38.59 40l-2.83-2.83 1.41-1.41L40 38.59V40h-1.41zM40 1.41l-2.83 2.83-1.41-1.41L38.59 0H40v1.41zM20 18.6l2.83-2.83 1.41 1.41L21.41 20l2.83 2.83-1.41 1.41L20 21.41l-2.83 2.83-1.41-1.41L18.59 20l-2.83-2.83 1.41-1.41L20 18.6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.5;
}

.hero-inner > * {
    position: relative;
    z-index: 2;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(255,255,255,0.16);
    border: 1px solid rgba(255,255,255,0.25);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    padding: 5px 14px;
    border-radius: 9999px;
    margin-bottom: 16px;
}

.hero-inner h1 {
    color: #fff;
    font-size: clamp(1.8rem, 4vw, 2.9rem);
    margin-bottom: 12px;
}

.hero-inner p {
    color: #c7d2fe;
    font-size: 1.05rem;
    max-width: 640px;
    margin-bottom: 22px;
}

.hero-cta-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.hero-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 12px;
    font-weight: 700;
    font-size: 0.95rem;
    text-decoration: none;
}

.hero-btn-primary {
    background: #ffffff;
    color: var(--accent-dark);
    box-shadow: 0 4px 14px rgba(0,0,0,0.15);
}

.hero-btn-primary:hover { background: #f0f0ff; }

.hero-btn-ghost {
    background: rgba(255,255,255,0.12);
    color: #fff;
    border: 1px solid rgba(255,255,255,0.3);
}

.hero-btn-ghost:hover { background: rgba(255,255,255,0.2); }

/* Stats row */
.site-stats {
    width: 100%;
    max-width: 1160px;
    margin: 0 auto 30px;
    padding: 0 24px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 14px;
}

.stat-card {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 18px;
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.stat-card .stat-icon {
    width: 44px;
    height: 44px;
    margin: 0 auto 10px;
    border-radius: 12px;
    background: var(--indigo-100);
    color: var(--accent-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.stat-card .stat-value {
    font-family: 'Outfit', sans-serif;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
}

.stat-card .stat-label {
    font-size: 0.82rem;
    color: var(--text-muted);
    font-weight: 600;
}

/* ========================================================
   NEW: HOW IT WORKS / FEATURES (Homepage)
   ======================================================== */
.feature-grid {
    width: 100%;
    max-width: 1160px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin: 0 auto 20px;
}

.feature-card {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 24px 20px;
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.feature-card i {
    font-size: 1.8rem;
    color: var(--accent);
    margin-bottom: 12px;
    background: var(--indigo-100);
    width: 58px;
    height: 58px;
    line-height: 58px;
    border-radius: 16px;
    display: inline-block;
}

.feature-card h3 {
    font-size: 1.05rem;
    margin-bottom: 6px;
    color: var(--text-primary);
}

.feature-card p {
    font-size: 0.86rem;
    color: var(--text-muted);
}

/* App download banner */
.app-banner {
    width: 100%;
    max-width: 960px;
    margin: 15px auto 40px;
    background: linear-gradient(135deg, #eef1fb, #f5f3ff);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 24px 30px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 20px;
    box-shadow: var(--shadow-sm);
}

/* ========================================================
   NEW: SPECIAL SECTION & CTA BANNER
   ======================================================== */
.cta-banner {
    width: 100%;
    max-width: 1160px;
    margin: 40px auto;
    padding: 0 24px;
}

.cta-inner {
    background: linear-gradient(135deg, #4338ca, #7c3aed);
    border-radius: 20px;
    padding: 30px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
    color: #fff;
    box-shadow: var(--shadow-md);
}

.cta-inner h3 {
    color: #fff;
    font-size: 1.35rem;
}

.cta-inner p {
    color: #c7d2fe;
    font-size: 0.9rem;
}

/* Mobile Adjustments */
@media (max-width: 768px) {
    .mc759351 {
        padding: 18px;
    }

    .mc759351body {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 24px;
    }

    .mc7593512, .main-cover {
        width: 200px;
        max-width: 100%;
    }

    .mc7593512345 {
        height: 275px;
    }

    .kb-showcase-cover {
        height: 275px;
    }

    .kb-top-year .year-selector {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }

    .materials-section {
        justify-content: center;
        flex-wrap: wrap;
        gap: 8px;
    }

    .mdbtn {
        padding: 10px 16px;
        font-size: 0.9rem;
    }

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

    .maniwrraper {
        grid-template-columns: 1fr;
    }

    .sem-card-link {
        align-items: center;
        text-align: center;
    }

    .sem-card-title {
        justify-content: center;
    }

    .rec-grid {
        grid-template-columns: 1fr;
    }

    .hero-inner {
        padding: 32px 24px;
    }

    .site-stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .feature-grid {
        grid-template-columns: 1fr;
    }

    /* Ad responsiveness on mobile */
    .ad-slot-wrapper {
        padding: 0 12px;
        margin: 16px auto;
    }

    .ad-container {
        min-height: 60px;
        border-radius: 10px;
    }

    .ad-leaderboard {
        min-height: 60px;
    }

    .ad-in-content {
        min-height: 90px;
        margin: 20px auto;
    }

    .ad-label {
        font-size: 0.6rem;
    }
}

@media (max-width: 500px) {
    .mc7593512, .main-cover {
        width: 170px;
    }

    .mc7593512345,
    .kb-showcase-cover {
        height: 240px;
    }

    .mc759351 {
        padding: 14px;
    }

    .mac75935 h1 {
        font-size: 1.4rem;
    }

    .materials-section {
        gap: 6px;
    }

    .mdbtn {
        padding: 8px 14px;
        font-size: 0.85rem;
    }

    .shrbtn {
        padding: 8px 14px;
        font-size: 0.85rem;
    }

    .hero-inner {
        padding: 24px 18px;
        border-radius: 18px;
    }

    .hero-inner h1 {
        font-size: 1.5rem;
    }

    .hero-inner p {
        font-size: 0.9rem;
    }

    .hero-btn {
        padding: 10px 18px;
        font-size: 0.88rem;
    }

    .site-stats {
        padding: 0 12px;
        gap: 10px;
    }

    .stat-card {
        padding: 14px 10px;
    }

    .stat-card .stat-value {
        font-size: 1.2rem;
    }

    .feature-card {
        padding: 18px 14px;
    }

    .nvl153 {
        font-size: 0.78rem;
        padding: 6px 12px;
    }
}

@media (max-width: 400px) {
    .mc7593512, .main-cover {
        width: 150px;
    }
    .mc7593512345,
    .kb-showcase-cover {
        height: 200px;
    }

    .kb-showcase-cover .bookcover-title {
        font-size: 1.1em;
    }

    header.homehead, header {
        padding: 8px 14px;
        margin: 12px auto 6px;
    }

    .homehead h1, .ph748 {
        font-size: 1.6rem;
    }

    main {
        padding: 0 14px 40px;
    }

    .abc123456 {
        width: 100%;
        max-width: 340px;
        padding: 12px;
        gap: 12px;
    }

    .rec-book-card {
        padding: 10px;
        gap: 10px;
    }

    .rec-card-cover {
        width: 60px;
        height: 82px;
    }

    .badge {
        font-size: 0.72rem;
        padding: 3px 8px;
    }
}

/* Extra small screens (320px - common budget Android) */
@media (max-width: 360px) {
    .mc7593512, .main-cover {
        width: 130px;
    }

    .mc7593512345,
    .kb-showcase-cover {
        height: 180px;
    }

    .kb-showcase-cover .bookcover-title {
        font-size: 0.95em;
    }

    .mac75935 h1 {
        font-size: 1.2rem;
    }

    .mdbtn {
        padding: 7px 12px;
        font-size: 0.8rem;
        gap: 5px;
    }

    .materials-section {
        gap: 5px;
    }

    .hero-inner {
        padding: 20px 14px;
        border-radius: 14px;
    }

    .hero-inner h1 {
        font-size: 1.3rem;
    }

    .hero-btn {
        padding: 8px 14px;
        font-size: 0.82rem;
        border-radius: 8px;
    }

    .hero-cta-row {
        gap: 8px;
    }

    .site-stats {
        grid-template-columns: 1fr 1fr;
        gap: 8px;
        padding: 0 10px;
    }

    .stat-card {
        padding: 12px 8px;
        border-radius: 12px;
    }

    .stat-card .stat-value {
        font-size: 1.1rem;
    }

    .stat-card .stat-label {
        font-size: 0.72rem;
    }

    .feature-card {
        padding: 16px 12px;
    }

    .feature-card i {
        width: 48px;
        height: 48px;
        line-height: 48px;
        font-size: 1.4rem;
    }

    .navwrap {
        padding: 8px 14px;
    }

    .textl {
        font-size: 1.2rem;
    }

    .nvl153 {
        font-size: 0.72rem;
        padding: 5px 10px;
        gap: 5px;
    }

    /* Ad fixes for extra small screens */
    .ad-slot-wrapper {
        padding: 0 8px;
        margin: 12px auto;
    }

    .ad-container {
        min-height: 50px;
        border-radius: 8px;
    }

    .ad-leaderboard {
        min-height: 50px;
    }

    .ad-in-content {
        min-height: 70px;
        margin: 14px auto;
    }
}