:root {
    --bg: #f4f7fb;
    --surface: #ffffff;
    --surface-muted: #eef3f9;
    --ink: #0d1b2a;
    --muted: #5f6f82;
    --line: #d8e1ea;
    --brand: #113f67;
    --brand-strong: #0b2948;
    --accent: #cc8b3c;
    --accent-soft: #fff4e7;
    --success: #1f7a4d;
    --warning: #9b6c18;
    --danger: #b43c3c;
    --radius: 18px;
    --radius-sm: 12px;
    --shadow: 0 18px 50px rgba(13, 27, 42, 0.08);
}

body {
    background:
        radial-gradient(circle at top right, rgba(17, 63, 103, 0.08), transparent 28%),
        linear-gradient(180deg, #f8fbff 0%, #f4f7fb 100%);
    color: var(--ink);
    font-family: "IBM Plex Sans", sans-serif;
    line-height: 1.6;
}

a,
button,
input,
select,
textarea {
    transition: box-shadow 0.2s ease, border-color 0.2s ease, background-color 0.2s ease, transform 0.2s ease;
}

a {
    color: inherit;
    text-decoration: none;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
summary:focus-visible {
    outline: 3px solid rgba(204, 139, 60, 0.32);
    outline-offset: 3px;
    box-shadow: 0 0 0 4px rgba(17, 63, 103, 0.18);
}

h1,
h2,
h3,
h4 {
    font-family: "Manrope", sans-serif;
    line-height: 1.15;
    letter-spacing: -0.03em;
}

.container {
    width: min(1180px, calc(100% - 32px));
    margin: 0 auto;
}

.section {
    padding: 64px 0;
}

.section-compact {
    padding: 48px 0;
}

.section-soft {
    background: linear-gradient(180deg, rgba(17, 63, 103, 0.04), rgba(17, 63, 103, 0.01));
    border-top: 1px solid rgba(17, 63, 103, 0.08);
    border-bottom: 1px solid rgba(17, 63, 103, 0.08);
}

.section-heading {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    align-items: end;
    margin-bottom: 24px;
}

.section-heading h1,
.section-heading h2 {
    max-width: 720px;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--brand);
    margin-bottom: 12px;
}

.card,
.page-hero-card,
.feature-box,
.auth-card,
.exam-intro-card,
.admin-header-card {
    background: rgba(255, 255, 255, 0.88);
    border: 1px solid rgba(17, 63, 103, 0.08);
    box-shadow: var(--shadow);
    border-radius: var(--radius);
}

.card,
.feature-box,
.auth-card,
.exam-intro-card,
.admin-header-card {
    padding: 24px;
}

.page-hero-card {
    padding: 32px;
}

.card-grid {
    display: grid;
    gap: 20px;
}

.card-grid.three {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card-grid.two {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.feature-grid,
.two-column,
.student-grid,
.auth-wrap,
.hero-grid,
.search-results,
.pack-grid,
.admin-stat-grid {
    display: grid;
    gap: 24px;
}

.two-column {
    grid-template-columns: minmax(0, 1.3fr) minmax(320px, 0.7fr);
}

.hero-grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
    align-items: stretch;
}

.student-grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(280px, 0.7fr);
}

.auth-wrap {
    grid-template-columns: minmax(0, 480px) minmax(0, 360px);
    justify-content: center;
}

.auth-wrap--balanced {
    align-items: start;
}

.search-results,
.pack-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.admin-stat-grid {
    grid-template-columns: repeat(5, minmax(0, 1fr));
}

.content-stack,
.sidebar-stack,
.student-main,
.student-side {
    display: grid;
    gap: 20px;
}

.auth-side {
    display: grid;
    gap: 18px;
    align-content: start;
}

.auth-panel {
    display: grid;
    gap: 14px;
}

.auth-panel h3 {
    margin-bottom: 0;
}

.auth-feature-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 14px;
}

.auth-feature-list li {
    display: grid;
    gap: 4px;
    padding-top: 14px;
    border-top: 1px solid rgba(17, 63, 103, 0.1);
}

.auth-feature-list li:first-child {
    border-top: 0;
    padding-top: 0;
}

.auth-feature-list strong {
    font-size: 0.98rem;
}

.auth-feature-list span {
    color: var(--muted);
    font-size: 0.94rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    border-radius: 999px;
    min-height: 48px;
    padding: 12px 18px;
    border: 1px solid transparent;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
    transform: translateY(-1px);
}

.btn-primary {
    background: linear-gradient(135deg, var(--brand), var(--brand-strong));
    color: #fff;
    box-shadow: 0 12px 28px rgba(17, 63, 103, 0.25);
}

.btn-danger {
    background: linear-gradient(135deg, #a73333, #7c1f1f);
    color: #fff;
    box-shadow: 0 12px 28px rgba(167, 51, 51, 0.22);
}

.btn-subtle {
    background: rgba(17, 63, 103, 0.06);
    border-color: rgba(17, 63, 103, 0.12);
    color: var(--brand);
}

.btn-block {
    width: 100%;
}

.text-link {
    color: var(--brand);
    font-weight: 700;
}

.pill {
    display: inline-flex;
    align-items: center;
    padding: 7px 12px;
    border-radius: 999px;
    background: rgba(17, 63, 103, 0.08);
    color: var(--brand);
    font-size: 0.82rem;
    font-weight: 700;
}

.pill.accent {
    background: var(--accent-soft);
    color: var(--warning);
}

.muted {
    color: var(--muted);
}

.inline-status {
    min-height: 24px;
    font-weight: 600;
}

.inline-status.is-error {
    color: var(--danger);
}

.inline-status.is-success {
    color: var(--success);
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 30;
    backdrop-filter: blur(18px);
    background: rgba(248, 251, 255, 0.88);
    border-bottom: 1px solid rgba(17, 63, 103, 0.08);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    min-height: 76px;
}

.brand-mark {
    display: inline-flex;
    align-items: center;
    gap: 14px;
}

.brand-mark strong {
    display: block;
    font-family: "Manrope", sans-serif;
    font-size: 1.1rem;
}

.brand-mark small {
    display: block;
    color: var(--muted);
}

.brand-badge {
    display: grid;
    place-items: center;
    width: 42px;
    height: 42px;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--brand), #245d8a);
    color: #fff;
    font-family: "Manrope", sans-serif;
    font-weight: 800;
}

.primary-nav,
.app-nav,
.app-userbar {
    display: flex;
    align-items: center;
    gap: 14px;
}

.primary-nav a:not(.btn),
.app-nav a {
    padding: 8px 10px;
    color: var(--muted);
    font-weight: 600;
}

.user-chip {
    display: grid;
    text-align: right;
}

.user-chip small {
    color: var(--muted);
}

.site-footer {
    padding: 36px 0 48px;
    border-top: 1px solid rgba(17, 63, 103, 0.08);
    background: rgba(17, 63, 103, 0.03);
    margin-top: 48px;
}

.footer-grid {
    display: grid;
    gap: 20px;
    grid-template-columns: 1.6fr repeat(3, 1fr);
}

.footer-grid h3,
.footer-grid h4 {
    margin-bottom: 10px;
}

.footer-grid a,
.footer-grid span,
.footer-grid p {
    display: block;
    color: var(--muted);
    margin-bottom: 8px;
}

.flash {
    display: flex;
    align-items: center;
    gap: 14px;
    border-radius: var(--radius-sm);
    padding: 14px 16px;
    margin-top: 18px;
    border: 1px solid transparent;
}

.flash-success {
    background: rgba(31, 122, 77, 0.08);
    border-color: rgba(31, 122, 77, 0.18);
    color: var(--success);
}

.flash-error {
    background: rgba(180, 60, 60, 0.08);
    border-color: rgba(180, 60, 60, 0.18);
    color: var(--danger);
}

.flash-info {
    background: rgba(17, 63, 103, 0.08);
    border-color: rgba(17, 63, 103, 0.14);
    color: var(--brand);
}

.flash-close {
    margin-left: auto;
    background: transparent;
    border: 0;
    color: inherit;
    cursor: pointer;
    font-size: 1.2rem;
}

.meta-row,
.price-row,
.price-highlight,
.hero-actions,
.trust-strip,
.stack-list,
.link-stack,
.stat-list,
.test-card-list,
.breadcrumbs {
    display: grid;
    gap: 12px;
}

.product-card__badge-row,
.exam-card__badge-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.breadcrumbs {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
    color: rgba(17, 63, 103, 0.72);
    font-size: 0.94rem;
}

.breadcrumbs a {
    color: inherit;
}

.meta-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    color: var(--muted);
    font-size: 0.95rem;
}

.price-row,
.price-highlight {
    display: flex;
    align-items: baseline;
    gap: 10px;
}

.price-row strong,
.price-highlight strong {
    font-size: 1.55rem;
    font-family: "Manrope", sans-serif;
}

.price-row span,
.price-highlight span {
    color: var(--muted);
    text-decoration: line-through;
}

.search-bar {
    display: flex;
    gap: 12px;
    background: rgba(255, 255, 255, 0.88);
    border: 1px solid rgba(17, 63, 103, 0.1);
    box-shadow: var(--shadow);
    border-radius: 999px;
    padding: 8px;
    margin-bottom: 24px;
}

.search-bar input {
    flex: 1;
    border: 0;
    background: transparent;
    padding: 0 14px;
    color: var(--ink);
    min-height: 46px;
}

.search-bar button {
    border: 0;
    border-radius: 999px;
    background: var(--brand);
    color: #fff;
    padding: 12px 20px;
    cursor: pointer;
}

.stack-form {
    display: grid;
    gap: 16px;
}

.stack-form label {
    display: grid;
    gap: 8px;
    font-weight: 600;
}

.stack-form input,
.stack-form textarea,
.stack-form select {
    width: 100%;
    border: 1px solid var(--line);
    background: #fff;
    border-radius: 12px;
    padding: 12px 14px;
}

.prose > * + * {
    margin-top: 14px;
}

.prose ul {
    list-style: disc;
    margin-left: 20px;
}

.feature-list {
    display: grid;
    gap: 10px;
    list-style: disc;
    margin-left: 18px;
}

.feature-list li {
    color: var(--muted);
}

.resource-grid {
    display: grid;
    gap: 16px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.resource-card {
    display: grid;
    gap: 8px;
    padding: 18px;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(17, 63, 103, 0.1);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(17, 63, 103, 0.03));
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.resource-card:hover {
    transform: translateY(-2px);
    border-color: rgba(17, 63, 103, 0.22);
}

.resource-card strong {
    color: var(--ink);
}

.resource-card span {
    color: var(--muted);
    font-size: 0.94rem;
}

.list-link {
    display: grid;
    gap: 4px;
    padding: 12px 0;
    border-bottom: 1px solid rgba(17, 63, 103, 0.08);
}

.list-link:last-child {
    border-bottom: 0;
}

.list-link strong {
    color: var(--ink);
}

.list-link span {
    color: var(--muted);
    font-size: 0.94rem;
}

.empty-state {
    text-align: center;
    padding: 56px 24px;
    background: rgba(255, 255, 255, 0.88);
    border: 1px solid rgba(17, 63, 103, 0.08);
    box-shadow: var(--shadow);
    border-radius: var(--radius);
}

.table-wrap {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th,
.data-table td {
    padding: 14px 10px;
    border-bottom: 1px solid rgba(17, 63, 103, 0.08);
    text-align: left;
}

.nav-toggle {
    display: none;
}

.inline-form {
    display: inline-flex;
}

.debug-block {
    margin-top: 16px;
    padding: 16px;
    background: rgba(13, 27, 42, 0.94);
    color: #fff;
    border-radius: 12px;
    overflow: auto;
    text-align: left;
}

@media (max-width: 980px) {
    .card-grid.three,
    .card-grid.two,
    .two-column,
    .hero-grid,
    .student-grid,
    .auth-wrap,
    .search-results,
    .pack-grid,
    .footer-grid,
    .admin-stat-grid,
    .resource-grid {
        grid-template-columns: 1fr;
    }

    .primary-nav {
        position: absolute;
        top: 76px;
        left: 16px;
        right: 16px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        padding: 18px;
        background: rgba(255, 255, 255, 0.96);
        border: 1px solid rgba(17, 63, 103, 0.12);
        border-radius: 20px;
        box-shadow: var(--shadow);
    }

    .primary-nav.is-open {
        display: flex;
    }

    .nav-toggle {
        display: inline-flex;
        min-height: 44px;
        border: 1px solid rgba(17, 63, 103, 0.14);
        background: rgba(17, 63, 103, 0.06);
        border-radius: 999px;
        padding: 10px 14px;
        color: var(--brand);
    }

    .header-inner {
        position: relative;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
    }

    .btn:hover,
    .resource-card:hover {
        transform: none;
    }
}