:root {
    --navy: #0b1f3b;
    --navy-deep: #07152c;
    --navy-soft: #12315d;
    --gold: #f5c542;
    --gold-soft: #f8d36a;
    --ink: #122033;
    --mist: #f3f5f8;
    --mist-strong: #e9eef5;
    --line: #d9e1ea;
    --slate: #64748b;
    --success: #0f766e;
    --warning: #b45309;
    --danger: #b91c1c;
    --radius-xl: 28px;
    --radius-lg: 22px;
    --radius-md: 16px;
    --shadow-soft: 0 20px 45px -24px rgba(11, 31, 59, 0.25);
    --shadow-medium: 0 26px 52px -28px rgba(11, 31, 59, 0.34);
    --shadow-strong: 0 34px 74px -34px rgba(11, 31, 59, 0.42);
    --glass-surface: rgba(255, 255, 255, 0.78);
    --glass-stroke: rgba(255, 255, 255, 0.34);
    --transition-smooth: 0.28s ease;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: "Manrope", sans-serif;
    color: var(--ink);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    background:
        radial-gradient(circle at top, rgba(245, 197, 66, 0.12), transparent 24%),
        radial-gradient(circle at bottom left, rgba(11, 31, 59, 0.06), transparent 24%),
        linear-gradient(180deg, rgba(243, 245, 248, 0.78) 0%, rgba(255, 255, 255, 0) 24%),
        #ffffff;
}

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

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-smooth), opacity var(--transition-smooth), transform var(--transition-smooth);
}

button,
input,
select,
textarea {
    font: inherit;
}

.shell {
    width: min(1180px, calc(100% - 2rem));
    margin: 0 auto;
}

.flash-stack {
    margin-top: 1rem;
    position: relative;
    z-index: 3;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.45rem 0.85rem;
    border-radius: 999px;
    border: 1px solid rgba(245, 197, 66, 0.3);
    background: rgba(245, 197, 66, 0.12);
    color: var(--navy);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.18em;
    text-transform: uppercase;
}

.auth-page,
.dashboard-shell {
    min-height: 100vh;
}

.auth-wrap {
    min-height: 100vh;
}

.auth-hero,
.topbar {
    position: relative;
    overflow: hidden;
    background:
        radial-gradient(circle at top right, rgba(245, 197, 66, 0.22), transparent 22%),
        radial-gradient(circle at bottom left, rgba(255, 255, 255, 0.08), transparent 28%),
        linear-gradient(135deg, rgba(255, 255, 255, 0.08), transparent 52%),
        linear-gradient(180deg, var(--navy-soft), var(--navy-deep));
    color: #fff;
}

.auth-hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.auth-hero::before,
.topbar::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        linear-gradient(120deg, rgba(255, 255, 255, 0.03), transparent 40%),
        radial-gradient(circle at 82% 18%, rgba(245, 197, 66, 0.18), transparent 16%);
    pointer-events: none;
}

.auth-hero-glow {
    position: absolute;
    inset: auto auto -100px -60px;
    width: 280px;
    height: 280px;
    border-radius: 50%;
    background: rgba(245, 197, 66, 0.16);
    filter: blur(80px);
    animation: glowFloat 8s ease-in-out infinite;
}

.auth-grid {
    position: relative;
    z-index: 1;
    display: grid;
    gap: 3rem;
    align-items: center;
    padding: 4.75rem 0;
}

.auth-copy {
    display: grid;
    gap: 1.55rem;
    animation: fadeUp 0.7s ease both;
}

.auth-copy h1 {
    margin: 0.15rem 0;
    max-width: 11ch;
    font-size: clamp(2.6rem, 4.8vw, 4.8rem);
    line-height: 0.94;
    letter-spacing: -0.04em;
}

.auth-copy p {
    max-width: 38rem;
    color: rgba(255, 255, 255, 0.82);
    line-height: 1.85;
    font-size: 1.05rem;
}

.auth-feature-list,
.stats-grid,
.split-grid,
.content-grid,
.cards-grid,
.form-grid,
.quiz-options,
.activity-list {
    display: grid;
    gap: 1rem;
}

.info-card,
.panel,
.stat-card,
.empty-state,
.lesson-card {
    border: 1px solid rgba(217, 225, 234, 0.85);
    border-radius: var(--radius-xl);
    background: rgba(255, 255, 255, 0.97);
    box-shadow: var(--shadow-soft);
    transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), border-color var(--transition-smooth), background-color var(--transition-smooth);
}

.info-card {
    padding: 1.2rem 1.3rem;
    color: var(--ink);
    border-color: rgba(255, 255, 255, 0.18);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.18), rgba(255, 255, 255, 0.1));
    backdrop-filter: blur(18px);
    box-shadow: 0 22px 52px -36px rgba(0, 0, 0, 0.45);
}

.info-card:hover,
.panel:hover,
.stat-card:hover,
.lesson-card:hover,
.metric:hover,
.course-item:hover,
.activity-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-medium);
}

.info-card strong,
.metric strong,
.course-item strong,
.lesson-card strong,
.module-summary strong {
    display: block;
    color: var(--navy);
}

.auth-panel {
    display: flex;
    justify-content: flex-end;
    animation: fadeUp 0.82s ease both;
}

.panel {
    width: 100%;
    padding: 1.7rem;
}

.auth-panel .panel {
    max-width: 500px;
    padding: 1.9rem;
    border: 1px solid rgba(255, 255, 255, 0.42);
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.99), rgba(247, 249, 252, 0.97));
    backdrop-filter: blur(18px);
    box-shadow: var(--shadow-strong);
}

.panel-head,
.panel-title-row,
.page-title-row,
.inline-actions,
.topbar-row,
.topbar-actions,
.metric-row,
.course-item,
.course-meta,
.footer-inner,
.lesson-row {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.panel-head,
.panel-title-row,
.page-title-row,
.topbar-row,
.metric-row {
    justify-content: space-between;
}

.panel-head,
.panel-title-row {
    margin-bottom: 1.35rem;
}

.panel-head h2,
.panel-title-row h2,
.page-title-row h2 {
    margin: 0.5rem 0 0;
    font-size: clamp(1.45rem, 2.1vw, 1.8rem);
    color: var(--navy);
    letter-spacing: -0.03em;
}

.panel-logo {
    width: 150px;
    height: auto;
    filter: drop-shadow(0 8px 24px rgba(11, 31, 59, 0.16));
}

.form-stack {
    display: grid;
    gap: 1.05rem;
}

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

.field {
    display: grid;
    gap: 0.5rem;
    color: var(--navy);
    font-size: 0.95rem;
    font-weight: 600;
}

.field-note {
    color: var(--slate);
    font-size: 0.85rem;
    font-weight: 500;
}

.input,
.textarea,
.select {
    width: 100%;
    min-height: 54px;
    padding: 1rem 1rem;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    outline: none;
    color: var(--ink);
    background: rgba(255, 255, 255, 0.94);
    transition: border-color var(--transition-smooth), box-shadow var(--transition-smooth), background-color var(--transition-smooth);
}

.input:hover,
.textarea:hover,
.select:hover {
    border-color: rgba(11, 31, 59, 0.2);
}

.textarea {
    min-height: 150px;
    resize: vertical;
}

.input:focus,
.textarea:focus,
.select:focus {
    border-color: rgba(245, 197, 66, 0.72);
    background: #fff;
    box-shadow: 0 0 0 4px rgba(245, 197, 66, 0.18);
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    min-height: 48px;
    padding: 0.85rem 1.25rem;
    border: 0;
    border-radius: var(--radius-md);
    font-weight: 700;
    letter-spacing: -0.01em;
    cursor: pointer;
    transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), background-color var(--transition-smooth), border-color var(--transition-smooth), color var(--transition-smooth);
}

.button:hover {
    transform: translateY(-2px);
}

.button:active {
    transform: translateY(0);
}

.button-primary {
    color: var(--navy);
    background: linear-gradient(180deg, var(--gold-soft), var(--gold));
    box-shadow: 0 20px 36px -26px rgba(245, 197, 66, 0.85);
}

.button-primary:hover {
    background: linear-gradient(180deg, #f9db7b, #f5c542);
    box-shadow: 0 24px 44px -28px rgba(245, 197, 66, 0.95);
}

.button-secondary {
    color: var(--navy);
    background: rgba(255, 255, 255, 0.96);
    border: 1px solid rgba(11, 31, 59, 0.12);
    box-shadow: 0 14px 28px -24px rgba(11, 31, 59, 0.26);
}

.button-secondary:hover {
    border-color: rgba(11, 31, 59, 0.22);
    background: #fff;
}

.button-danger {
    color: #fff;
    background: var(--danger);
}

.button-link {
    color: var(--navy);
    background: rgba(11, 31, 59, 0.04);
    border: 1px solid rgba(11, 31, 59, 0.06);
}

.button-link:hover {
    background: rgba(11, 31, 59, 0.08);
}

.button-small {
    min-height: 40px;
    padding: 0.7rem 0.95rem;
    font-size: 0.9rem;
}

.button-block {
    width: 100%;
}

.helper-card,
.alert,
.user-chip,
.badge,
.pill {
    border-radius: var(--radius-md);
}

.helper-card {
    margin-top: 1.25rem;
    padding: 1rem 1.1rem;
    border: 1px solid rgba(217, 225, 234, 0.9);
    background: linear-gradient(180deg, #f8fafc, #eef3f8);
    color: var(--slate);
    line-height: 1.6;
}

.helper-card strong {
    display: block;
    color: var(--navy);
    margin-bottom: 0.2rem;
}

.alert {
    margin-bottom: 1rem;
    padding: 0.95rem 1rem;
    font-size: 0.95rem;
    font-weight: 600;
}

.alert-danger {
    background: rgba(185, 28, 28, 0.08);
    color: var(--danger);
}

.alert-success {
    background: rgba(15, 118, 110, 0.09);
    color: var(--success);
}

.topbar-inner {
    padding: 1.45rem 0 2.3rem;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    transition: opacity var(--transition-smooth), transform var(--transition-smooth);
}

.brand:hover {
    opacity: 0.92;
}

.brand img {
    width: 160px;
    height: auto;
}

.topbar-meta {
    margin-top: 1.75rem;
}

.topbar h1 {
    margin: 0.75rem 0 0.45rem;
    font-size: clamp(2.2rem, 3.5vw, 3.45rem);
    line-height: 0.98;
    letter-spacing: -0.04em;
}

.topbar-copy {
    margin: 0;
    max-width: 44rem;
    color: rgba(255, 255, 255, 0.78);
    line-height: 1.75;
}

.topbar-actions {
    flex-wrap: wrap;
    justify-content: flex-end;
}

.user-chip {
    display: inline-flex;
    align-items: center;
    padding: 0.85rem 1rem;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(10px);
    color: #fff;
    font-weight: 700;
}

.portal-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 1.5rem;
}

.portal-link {
    display: inline-flex;
    align-items: center;
    min-height: 42px;
    padding: 0.65rem 1rem;
    border-radius: 999px;
    color: rgba(255, 255, 255, 0.8);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(10px);
}

.portal-link.is-active,
.portal-link:hover {
    color: var(--navy);
    background: var(--gold);
    border-color: var(--gold);
    box-shadow: 0 16px 32px -24px rgba(245, 197, 66, 0.95);
}

.dashboard-grid {
    padding: 2.4rem 0 3.5rem;
}

.premium-stats {
    align-items: stretch;
}

.stats-grid {
    margin-bottom: 1.5rem;
}

.stat-card {
    padding: 1.45rem;
}

.stat-card p,
.muted,
.course-item p,
.helper-text,
.empty-state p,
.meta-text {
    margin: 0;
    color: var(--slate);
}

.stat-card strong {
    display: block;
    margin: 0.55rem 0 0.35rem;
    color: var(--navy);
    font-size: clamp(2rem, 3vw, 2.8rem);
    letter-spacing: -0.04em;
}

.stat-card-premium {
    position: relative;
    overflow: hidden;
    min-height: 170px;
    border-color: rgba(245, 197, 66, 0.24);
    background:
        radial-gradient(circle at top right, rgba(245, 197, 66, 0.22), transparent 32%),
        linear-gradient(180deg, rgba(11, 31, 59, 0.05), rgba(255, 255, 255, 0.98));
    backdrop-filter: blur(14px);
}

.stat-card-premium::after {
    content: "";
    position: absolute;
    inset: auto 1.35rem 1rem auto;
    width: 52px;
    height: 4px;
    border-radius: 999px;
    background: linear-gradient(90deg, rgba(245, 197, 66, 0), rgba(245, 197, 66, 0.95));
}

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

.content-grid-wide {
    grid-template-columns: repeat(1, minmax(0, 1fr));
}

.content-grid-single {
    grid-template-columns: 1fr;
}

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

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

.table-wrap {
    overflow-x: auto;
    border: 1px solid rgba(217, 225, 234, 0.8);
    border-radius: var(--radius-lg);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(246, 248, 251, 0.96));
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.55);
}

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

.data-table tbody tr {
    transition: background-color var(--transition-smooth), transform var(--transition-smooth);
}

.data-table tbody tr:hover {
    background: rgba(243, 245, 248, 0.55);
}

.data-table th,
.data-table td {
    padding: 1rem 0.75rem;
    border-bottom: 1px solid var(--line);
    text-align: left;
    font-size: 0.95rem;
    vertical-align: top;
}

.data-table th {
    color: var(--slate);
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.data-table td form {
    margin: 0;
}

.table-actions,
.stack-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

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

.course-list,
.module-list,
.lesson-list,
.metric-list,
.activity-list {
    display: grid;
    gap: 1rem;
}

.course-item,
.lesson-row,
.metric {
    justify-content: space-between;
}

.course-item,
.lesson-card,
.metric,
.empty-state,
.module-summary {
    padding: 1.2rem;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background: linear-gradient(180deg, rgba(243, 245, 248, 0.55), rgba(255, 255, 255, 0.95));
}

.course-meta,
.metric {
    flex-wrap: wrap;
}

.panel-premium {
    border-color: rgba(217, 225, 234, 0.78);
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(246, 248, 251, 0.96));
    box-shadow: var(--shadow-soft);
    backdrop-filter: blur(16px);
}

.panel-hero {
    border-color: rgba(245, 197, 66, 0.26);
    background:
        radial-gradient(circle at top right, rgba(245, 197, 66, 0.16), transparent 28%),
        linear-gradient(180deg, rgba(11, 31, 59, 0.02), rgba(255, 255, 255, 0.98));
}

.quick-actions-grid {
    align-items: stretch;
}

.metric-premium {
    min-height: 100%;
    border-color: rgba(217, 225, 234, 0.9);
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(243, 245, 248, 0.92));
    box-shadow: 0 18px 36px -30px rgba(11, 31, 59, 0.3);
}

.hero-summary-grid {
    display: grid;
    gap: 1rem;
}

.course-card-premium {
    align-items: flex-start;
    gap: 1.1rem;
    min-height: 100%;
    border-color: rgba(217, 225, 234, 0.85);
    background:
        radial-gradient(circle at top right, rgba(245, 197, 66, 0.12), transparent 28%),
        linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(243, 245, 248, 0.96));
}

.course-card-premium .course-meta {
    width: 100%;
}

.badge,
.pill {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.42rem 0.8rem;
    font-size: 0.8rem;
    font-weight: 800;
    letter-spacing: 0.01em;
}

.pill {
    color: var(--navy);
    background: rgba(245, 197, 66, 0.16);
    border: 1px solid rgba(245, 197, 66, 0.28);
}

.badge-success {
    background: rgba(15, 118, 110, 0.1);
    color: var(--success);
}

.badge-warning {
    background: rgba(180, 83, 9, 0.12);
    color: var(--warning);
}

.badge-danger {
    background: rgba(185, 28, 28, 0.1);
    color: var(--danger);
}

.badge-neutral {
    background: rgba(100, 116, 139, 0.12);
    color: var(--slate);
}

.progress-bar {
    width: min(260px, 100%);
    height: 10px;
    overflow: hidden;
    border-radius: 999px;
    background: rgba(11, 31, 59, 0.08);
    box-shadow: inset 0 1px 3px rgba(11, 31, 59, 0.12);
}

.progress-bar span {
    display: block;
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(90deg, var(--gold), #f7cf5e);
    box-shadow: 0 0 18px rgba(245, 197, 66, 0.34);
}

.module-card {
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background: #fff;
}

.module-summary {
    list-style: none;
    cursor: pointer;
    transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), border-color var(--transition-smooth);
}

.module-summary::-webkit-details-marker {
    display: none;
}

.module-body {
    padding: 0 1rem 1rem;
}

.lesson-row {
    padding: 0.95rem 0;
    border-bottom: 1px solid var(--line);
}

.lesson-row:last-child {
    border-bottom: 0;
}

.inline-form {
    display: inline-flex;
    margin: 0;
}

.resource-link {
    color: var(--navy);
    font-weight: 700;
}

.empty-state {
    text-align: center;
    padding: 2.15rem 1.5rem;
}

.empty-state h3 {
    margin: 0 0 0.45rem;
    color: var(--navy);
}

.empty-state-danger {
    border-color: rgba(185, 28, 28, 0.16);
    background: linear-gradient(180deg, rgba(255, 244, 244, 0.92), rgba(255, 255, 255, 0.98));
}

.activity-item,
.quiz-question,
.quiz-option,
.certificate-card,
.certificate-signature,
.certificate-actions {
    border-radius: var(--radius-lg);
}

.activity-item,
.quiz-question {
    padding: 1rem 1.1rem;
    border: 1px solid var(--line);
    background: linear-gradient(180deg, rgba(243, 245, 248, 0.55), rgba(255, 255, 255, 0.95));
}

.quiz-options {
    margin-top: 1rem;
}

.quiz-option {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.9rem 1rem;
    border: 1px solid var(--line);
    background: #fff;
}

.quiz-option input {
    margin-top: 0.2rem;
}

.certificate-page {
    background:
        radial-gradient(circle at top, rgba(245, 197, 66, 0.1), transparent 22%),
        #f7f8fb;
}

.certificate-shell {
    padding: 2rem 0 3rem;
}

.certificate-actions {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1rem;
}

.certificate-card {
    padding: 2.35rem;
    border: 8px solid rgba(245, 197, 66, 0.55);
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(243, 245, 248, 0.96));
    box-shadow: var(--shadow-strong);
}

.certificate-brand {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    text-align: center;
}

.certificate-brand img {
    width: 200px;
}

.certificate-body {
    padding: 2.5rem 0;
    text-align: center;
}

.certificate-body h1,
.certificate-body h2,
.certificate-body h3 {
    margin: 0.35rem 0;
    color: var(--navy);
}

.certificate-body h1 {
    font-size: clamp(2.2rem, 4vw, 3.6rem);
}

.certificate-body h2 {
    font-size: clamp(2rem, 3.2vw, 3rem);
}

.certificate-body h3 {
    font-size: clamp(1.5rem, 2.4vw, 2.2rem);
}

.certificate-copy {
    color: var(--slate);
    line-height: 1.8;
}

.certificate-kicker {
    margin: 0 0 1rem;
    color: var(--navy);
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.certificate-verification-card {
    margin-bottom: 1.8rem;
}

.certificate-footer {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 2rem;
}

.certificate-signature {
    text-align: center;
}

.certificate-signature span {
    display: block;
    height: 1px;
    margin-bottom: 0.8rem;
    background: rgba(11, 31, 59, 0.3);
}

.no-print {
    display: block;
}

.activity-item {
    padding: 0.95rem 1rem;
}

.activity-item strong {
    color: var(--navy);
}

.site-footer {
    border-top: 1px solid rgba(217, 225, 234, 0.9);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(246, 248, 251, 0.96));
}

.footer-inner {
    justify-content: space-between;
    padding: 1.25rem 0;
    color: var(--slate);
    font-size: 0.92rem;
}

code {
    padding: 0.15rem 0.4rem;
    border-radius: 8px;
    background: rgba(11, 31, 59, 0.06);
    color: var(--navy);
}

.verification-panel {
    width: min(860px, calc(100% - 2rem));
    margin: 0 auto;
    padding: 2rem;
    border: 1px solid rgba(217, 225, 234, 0.8);
    border-radius: var(--radius-xl);
    background:
        radial-gradient(circle at top right, rgba(245, 197, 66, 0.16), transparent 28%),
        linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(243, 245, 248, 0.96));
    box-shadow: var(--shadow-soft);
}

.verification-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.55rem 0.9rem;
    border-radius: 999px;
    font-size: 0.8rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.verification-badge-success {
    color: var(--success);
    background: rgba(15, 118, 110, 0.1);
}

@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(14px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes glowFloat {
    0%,
    100% {
        transform: translate3d(0, 0, 0);
    }
    50% {
        transform: translate3d(20px, -14px, 0);
    }
}

.hidden {
    display: none;
}

@media (min-width: 760px) {
    .auth-grid,
    .stats-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .split-grid,
    .form-grid,
    .cards-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .content-grid {
        grid-template-columns: 1.1fr 0.9fr;
    }

    .content-grid-wide {
        grid-template-columns: 1fr 1fr;
    }

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

@media (min-width: 1040px) {
    .auth-grid {
        grid-template-columns: 1.08fr 0.92fr;
    }

    .stats-grid {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }

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

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

@media (max-width: 820px) {
    .topbar-row,
    .course-item,
    .course-meta,
    .lesson-row,
    .footer-inner,
    .metric-row,
    .certificate-actions {
        flex-direction: column;
        align-items: flex-start;
    }

    .topbar-actions {
        justify-content: flex-start;
    }

    .brand img {
        width: 132px;
    }

    .auth-grid {
        gap: 2rem;
        padding: 2.75rem 0;
    }

    .auth-copy h1 {
        font-size: clamp(2rem, 10vw, 3rem);
    }

    .auth-copy p {
        font-size: 0.98rem;
        line-height: 1.7;
    }

    .auth-panel {
        justify-content: stretch;
    }

    .auth-panel .panel {
        max-width: none;
    }

    .certificate-footer {
        grid-template-columns: 1fr;
    }

    .table-wrap {
        border: 0;
        background: transparent;
    }

    .data-table,
    .data-table thead,
    .data-table tbody,
    .data-table th,
    .data-table td,
    .data-table tr {
        display: block;
        width: 100%;
    }

    .data-table thead {
        display: none;
    }

    .data-table tr {
        margin-bottom: 0.9rem;
        border: 1px solid var(--line);
        border-radius: var(--radius-lg);
        background: #fff;
        box-shadow: var(--shadow-soft);
        overflow: hidden;
    }

    .data-table td {
        padding: 0.85rem 1rem;
    }

    .data-table td:last-child {
        border-bottom: 0;
    }
}

@media print {
    .topbar,
    .site-footer,
    .no-print {
        display: none !important;
    }

    body.certificate-page {
        background: #fff;
    }

    .certificate-card {
        box-shadow: none;
        margin: 0;
        width: 100%;
    }

    .certificate-verification-card {
        border: 1px solid rgba(11, 31, 59, 0.14);
    }
}