:root {
    --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    --font-display: "Outfit", "Poppins", var(--font-sans);
    --app-brand-50: #fffde7;
    --app-brand-100: #fff9c4;
    --app-brand-500: #ffeb3b;
    --app-brand-600: #f9a825;
    --app-brand-700: #f57f17;
    --app-accent-500: #ff9800;
    --app-accent-600: #fb8c00;
    --app-cta-500: #e53935;
    --app-cta-600: #d32f2f;
    --app-surface: #fffbf5;
    --app-surface-alt: #f8f6f3;
    --app-card: #ffffff;
    --app-text: #0f172a;
    --app-text-muted: #475569;
    --app-border: #e2e8f0;
    --app-border-strong: #cbd5e1;
    --app-shadow-xs: 0 3px 10px rgba(15, 23, 42, 0.05);
    --app-shadow-sm: 0 8px 24px rgba(15, 23, 42, 0.06);
    --app-shadow-md: 0 16px 40px rgba(15, 23, 42, 0.08);
    --app-shadow-lg: 0 24px 60px rgba(15, 23, 42, 0.1);
    --app-radius-sm: 0.85rem;
    --app-radius-md: 1rem;
    --app-radius-lg: 1.5rem;
    --app-radius-xl: 2rem;
    --app-space-2: 0.5rem;
    --app-space-4: 1rem;
    --app-space-6: 1.5rem;
    --app-space-8: 2rem;
    --app-space-12: 3rem;
}

body {
    color: var(--app-text);
    background: var(--app-surface);
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

*:focus-visible {
    outline: 3px solid rgba(249, 168, 37, 0.55);
    outline-offset: 2px;
    border-radius: 4px;
}

/* Section / nav labels: readable minimum size vs ad-hoc 10px */
.app-dashboard-overline {
    font-size: 0.75rem;
    line-height: 1.3;
    font-weight: 800;
    letter-spacing: 0.18em;
    text-transform: uppercase;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-display);
    line-height: 1.14;
}

.app-kicker {
    font-size: 0.69rem;
    line-height: 1.2;
    font-weight: 800;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--app-accent-600);
}

.app-page {
    background:
        radial-gradient(circle at top left, rgba(255, 249, 196, 0.9), transparent 26rem),
        linear-gradient(180deg, #fffbf5 0%, #fff7eb 100%);
}

.app-card {
    background: var(--app-card);
    border: 1px solid rgba(226, 232, 240, 0.85);
    border-radius: 1.75rem;
    box-shadow: var(--app-shadow-md);
}

.app-card-soft {
    background: rgba(255, 255, 255, 0.88);
    border: 1px solid rgba(226, 232, 240, 0.8);
    border-radius: 1.5rem;
    box-shadow: var(--app-shadow-sm);
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
}

.app-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.72rem;
    line-height: 1;
    font-weight: 800;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--app-accent-600);
}

.app-title-xl {
    font-size: clamp(2rem, 3vw, 2.75rem);
    font-weight: 800;
    letter-spacing: -0.03em;
}

.app-title-lg {
    font-size: clamp(1.65rem, 2.4vw, 2.15rem);
    font-weight: 800;
    letter-spacing: -0.03em;
}

.app-title-md {
    font-size: clamp(1.35rem, 2vw, 1.75rem);
    font-weight: 800;
    letter-spacing: -0.025em;
}

.app-copy {
    font-size: 0.97rem;
    line-height: 1.75;
    color: var(--app-text-muted);
}

.app-copy-sm {
    font-size: 0.9rem;
    line-height: 1.7;
    color: var(--app-text-muted);
}

/* Bhaskar Academy logo (313×240 PNG). Only object-fit + max-width — use Tailwind h-* w-auto for size (base must not set height or it overrides .h-*). */
img.ba-brand-logo {
    max-width: 100%;
    object-fit: contain;
    object-position: center;
    flex-shrink: 0;
}

.app-label {
    display: block;
    margin-bottom: 0.55rem;
    font-size: 0.92rem;
    font-weight: 700;
    color: #334155;
}

.app-input,
.app-select,
.app-textarea {
    width: 100%;
    min-height: 48px;
    border: 1px solid var(--app-border-strong);
    border-radius: 1rem;
    background: #fff;
    color: var(--app-text);
    font-size: 0.98rem;
    line-height: 1.5;
    transition: border-color 180ms ease, box-shadow 180ms ease, background-color 180ms ease;
}

.app-input,
.app-select {
    padding: 0.9rem 1rem;
}

.app-textarea {
    padding: 0.9rem 1rem;
    min-height: 120px;
    resize: vertical;
}

.app-input:hover,
.app-select:hover,
.app-textarea:hover {
    border-color: #94a3b8;
}

.app-input:focus,
.app-select:focus,
.app-textarea:focus {
    outline: none;
    border-color: var(--app-accent-500);
    box-shadow: 0 0 0 4px rgba(255, 152, 0, 0.12);
}

.app-input.is-invalid,
.app-select.is-invalid,
.app-textarea.is-invalid {
    border-color: #ef4444;
    box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.08);
}

.app-field-note {
    margin-top: 0.45rem;
    font-size: 0.82rem;
    color: #dc2626;
}

.app-button-primary,
.app-button-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.55rem;
    min-height: 48px;
    padding: 0.85rem 1.35rem;
    border-radius: 1rem;
    font-size: 0.95rem;
    font-weight: 700;
    transition: transform 180ms ease, box-shadow 180ms ease, background-color 180ms ease, border-color 180ms ease;
}

.app-button-primary {
    background: linear-gradient(135deg, var(--app-cta-500), var(--app-accent-600));
    color: #fff;
    box-shadow: 0 14px 32px rgba(229, 57, 53, 0.18);
}

.app-button-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 18px 38px rgba(229, 57, 53, 0.22);
}

.app-button-secondary {
    background: rgba(255, 255, 255, 0.9);
    color: var(--app-text);
    border: 1px solid var(--app-border);
}

.app-button-secondary:hover {
    border-color: var(--app-border-strong);
    background: #fff;
}

.app-alert {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 1rem 1rem 0.95rem;
    border-radius: 1rem;
    font-size: 0.92rem;
    line-height: 1.55;
}

.app-alert--error {
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #b91c1c;
}

.app-alert--success {
    background: #ecfdf5;
    border: 1px solid #a7f3d0;
    color: #047857;
}

.app-inline-list {
    display: grid;
    gap: 0.85rem;
}

.app-note-card {
    border-radius: 1.25rem;
    border: 1px solid rgba(251, 146, 60, 0.18);
    background: linear-gradient(180deg, rgba(255, 251, 235, 0.96), rgba(255, 247, 237, 0.94));
    padding: 1rem 1.1rem;
}

.app-note-card strong {
    display: block;
    margin-bottom: 0.2rem;
    font-size: 0.76rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: #b45309;
}

.app-link {
    color: var(--app-accent-600);
    font-weight: 700;
    transition: color 180ms ease;
}

.app-link:hover {
    color: var(--app-brand-700);
}

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

.app-section {
    padding: clamp(3.5rem, 6vw, 5.5rem) 0;
}

.app-stack-sm,
.app-stack-md,
.app-stack-lg {
    display: grid;
}

.app-stack-sm {
    gap: 1rem;
}

.app-stack-md {
    gap: 1.5rem;
}

.app-stack-lg {
    gap: 2rem;
}

.app-grid-auto {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
}

.app-surface-panel {
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(255, 248, 235, 0.92)),
        radial-gradient(circle at top right, rgba(255, 235, 59, 0.16), transparent 32%);
    border: 1px solid rgba(226, 232, 240, 0.92);
    border-radius: 2rem;
    box-shadow: var(--app-shadow-md);
}

.app-status-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.45rem 0.8rem;
    border-radius: 999px;
    background: rgba(249, 168, 37, 0.12);
    color: var(--app-accent-600);
    font-size: 0.76rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.app-price-row {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.95rem 0;
    border-bottom: 1px solid rgba(226, 232, 240, 0.92);
}

.app-price-row:last-child {
    border-bottom: 0;
    padding-bottom: 0;
}

.app-price-row strong {
    color: var(--app-text);
    font-size: 0.98rem;
    font-weight: 700;
}

.app-price-row span:last-child {
    flex-shrink: 0;
    color: var(--app-text);
    font-weight: 800;
}

.app-list-clean {
    display: grid;
    gap: 0.8rem;
    padding-left: 1.1rem;
    color: var(--app-text-muted);
}

.app-list-clean li::marker {
    color: var(--app-accent-600);
}

.app-stat-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1.4rem 1.5rem;
    border-radius: 1.5rem;
    color: #fff;
    box-shadow: var(--app-shadow-sm);
}

.app-stat-card__title {
    font-size: 0.92rem;
    font-weight: 700;
    opacity: 0.95;
}

.app-stat-card__value {
    margin-top: 0.3rem;
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.04em;
}

.app-stat-card__meta {
    margin-top: 0.15rem;
    font-size: 0.84rem;
    opacity: 0.88;
}

.app-gradient-brand {
    background: linear-gradient(135deg, var(--app-brand-600), var(--app-accent-600));
}

.app-gradient-success {
    background: linear-gradient(135deg, #0f766e, #14b8a6);
}

.app-gradient-info {
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
}

.app-gradient-danger {
    background: linear-gradient(135deg, #dc2626, #ea580c);
}

@media (max-width: 768px) {
    .app-title-xl {
        font-size: 2rem;
    }

    .app-title-lg {
        font-size: 1.7rem;
    }

    .app-copy,
    .app-copy-sm {
        font-size: 0.92rem;
    }

    .app-shell {
        width: min(100%, calc(100% - 1.5rem));
    }

    .app-section {
        padding: 3rem 0;
    }

    .app-price-row {
        flex-direction: column;
        gap: 0.35rem;
    }
}

/* Skip link: visible on keyboard focus (works with or without Tailwind CDN) */
.ba-skip-link {
    position: absolute;
    left: -9999px;
    top: auto;
    width: 1px;
    height: 1px;
    overflow: hidden;
    z-index: 100;
}
.ba-skip-link:focus {
    left: 0.75rem;
    top: 0.75rem;
    width: auto;
    height: auto;
    overflow: visible;
    padding: 0.5rem 1rem;
    background: #0f172a;
    color: #fff;
    border-radius: 0.5rem;
    text-decoration: none;
    font-weight: 600;
    outline: 2px solid #e53935;
    outline-offset: 2px;
}