/**
 * Public student application — layout, theme, mobile-first.
 */

:root {
    --app-brand: #0c4a6e;
    --app-brand-mid: #0369a1;
    --app-brand-light: #e0f2fe;
    --app-accent: #d97706;
    --app-accent-soft: #fff7ed;
    --app-surface: #ffffff;
    --app-text: #0f172a;
    --app-text-muted: #64748b;
    --app-border: rgba(15, 23, 42, 0.08);
    --app-shadow: 0 4px 6px -1px rgba(15, 23, 42, 0.07), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
    --app-shadow-lg: 0 10px 40px -10px rgba(12, 74, 110, 0.25);
    --app-radius: 14px;
    --app-radius-sm: 10px;
    --app-font: "DM Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    /* Match Bootstrap container-xl — used for main column and footer text block */
    --app-content-max: 1140px;
}

/* Page shell */
body.public-app {
    min-height: 100vh;
    margin: 0;
    font-family: var(--app-font);
    font-size: 1rem;
    color: var(--app-text);
    background: linear-gradient(165deg, #f0f9ff 0%, #e0f2fe 35%, #f8fafc 70%, #f1f5f9 100%);
    background-attachment: fixed;
    padding-bottom: 0;
}

/* Sticky footer: pin footer to viewport bottom when content is shorter than the screen */
.public-app-shell {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    min-height: 100dvh;
    position: relative;
    z-index: 1;
}

.app-form-bg {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    background:
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(56, 189, 248, 0.18), transparent 55%),
        radial-gradient(ellipse 60% 40% at 100% 50%, rgba(251, 191, 36, 0.06), transparent 50%);
}

.app-form-main {
    position: relative;
    z-index: 1;
    flex: 1 1 auto;
    max-width: var(--app-content-max);
    margin-left: auto;
    margin-right: auto;
}

/* Cards (sections) */
.app-form-page .card:not(.app-form-hero):not(.app-form-actions-card) {
    border-radius: var(--app-radius);
    border: 1px solid var(--app-border);
    background: var(--app-surface);
    box-shadow: var(--app-shadow);
    transition: box-shadow 0.2s ease;
}

.app-form-page .card:not(.app-form-hero):not(.app-form-actions-card):hover {
    box-shadow: 0 8px 30px -8px rgba(15, 23, 42, 0.1);
}

.app-form-page .card-body {
    padding: 1.25rem 1.5rem;
}

@media (max-width: 575.98px) {
    .app-form-page .card-body {
        padding: 1rem 1.15rem;
    }
}

/* Hero */
.app-form-hero {
    position: relative;
    border-radius: var(--app-radius);
    border: 1px solid rgba(12, 74, 110, 0.12);
    background: linear-gradient(135deg, #ffffff 0%, #f8fbff 55%, #f0f9ff 100%);
    box-shadow: var(--app-shadow-lg);
    overflow: hidden;
}

.app-form-hero-accent {
    height: 5px;
    background: linear-gradient(90deg, var(--app-brand) 0%, var(--app-brand-mid) 45%, var(--app-accent) 100%);
}

.app-form-level-pill {
    display: inline-flex;
    align-items: center;
    padding: 0.45rem 1rem;
    font-size: 0.8125rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--app-brand);
    background: linear-gradient(180deg, #fff 0%, var(--app-brand-light) 100%);
    border: 1px solid rgba(12, 74, 110, 0.15);
    border-radius: 999px;
    box-shadow: 0 1px 2px rgba(12, 74, 110, 0.08);
    flex-shrink: 0;
}

.app-form-hero-kicker {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--app-brand-mid);
    letter-spacing: 0.02em;
}

.app-form-hero-title {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--app-brand);
    line-height: 1.25;
}

@media (min-width: 576px) {
    .app-form-hero-title {
        font-size: 1.75rem;
    }
}

.app-form-hero-text {
    font-size: 0.9375rem;
    line-height: 1.6;
    color: var(--app-text-muted);
}

.app-form-hero-text strong {
    color: var(--app-text);
    font-weight: 600;
}

/* Hero notes list */
.app-form-notes-title {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--app-brand-mid);
}

.app-form-notes-list {
    padding-left: 1.15rem;
    margin: 0;
}

.app-form-notes-list li {
    margin: 0.25rem 0;
    line-height: 1.55;
}

.app-form-notes-list li::marker {
    color: rgba(3, 105, 161, 0.55);
}

/* Section titles */
.app-form-section-title {
    font-size: 1.0625rem;
    font-weight: 700;
    color: var(--app-brand);
    margin-bottom: 1.1rem;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
}

.app-form-section-title::after {
    content: "";
    flex: 1 1 100%;
    height: 3px;
    margin-top: 0.35rem;
    border-radius: 2px;
    background: linear-gradient(90deg, var(--app-brand-mid) 0%, rgba(56, 189, 248, 0.45) 55%, rgba(251, 191, 36, 0.35) 100%);
}

.app-form-section-title i {
    opacity: 0.9;
    color: var(--app-brand-mid);
}

.app-form-grid {
    --bs-gutter-x: 1rem;
    --bs-gutter-y: 0.75rem;
}

.app-form-page .form-label {
    font-size: 0.8125rem;
    font-weight: 500;
    margin-bottom: 0.3rem;
    color: #334155;
}

.app-form-page .form-control,
.app-form-page .form-select {
    border-radius: var(--app-radius-sm);
    border-color: #cbd5e1;
    min-height: calc(1.5em + 0.75rem + 2px);
    font-size: 0.9375rem;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.app-form-page .form-control-sm,
.app-form-page .form-select-sm {
    min-height: calc(1.5em + 0.5rem + 2px);
    font-size: 0.875rem;
}

.app-form-page textarea.form-control {
    min-height: 5rem;
}

.app-form-page input[type="file"].form-control {
    padding: 0.45rem 0.65rem;
    line-height: 1.4;
    background: #fafbfc;
}

.app-form-page input[type="date"].app-input-dob {
    cursor: pointer;
    min-height: calc(1.5em + 0.5rem + 2px);
}

.app-form-page .form-control:hover,
.app-form-page .form-select:hover {
    border-color: #94a3b8;
}

.app-form-page .form-control:focus,
.app-form-page .form-select:focus {
    border-color: var(--app-brand-mid);
    box-shadow: 0 0 0 3px rgba(3, 105, 161, 0.18);
}

/* Subject rows — line 1: title; line 2: name + Mark (aligned) */
.app-ol-row,
.app-al-row {
    padding: 0.5rem 0;
    border-bottom: 1px solid #e2e8f0;
}

.app-ol-row:last-child,
.app-al-row:last-child {
    border-bottom: none;
}

.app-subject-block {
    width: 100%;
}

.app-subj-title {
    font-weight: 600;
    color: #334155;
    font-size: 0.8125rem;
    letter-spacing: 0.01em;
    margin-bottom: 0.35rem;
    line-height: 1.3;
}

.app-subj-fields {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    column-gap: 0.75rem;
    row-gap: 0.35rem;
}

.app-subj-mark-group {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    flex-shrink: 0;
}

.app-form-page .app-subj-mark-label {
    font-size: 0.75rem;
    font-weight: 500;
    color: #64748b;
    margin-bottom: 0;
    white-space: nowrap;
}

.app-mark-input {
    width: 4rem;
    min-width: 3.75rem;
    padding-left: 0.4rem;
    padding-right: 0.4rem;
    text-align: center;
}

.app-subj-name {
    min-width: 0;
    width: 100%;
}

/* O/L & A/L subjects: 2 per row on desktop (lg+), compact fields */
.app-exam-subjects-grid .app-ol-row.app-exam-subj-cell,
.app-exam-subjects-grid .app-al-row.app-exam-subj-cell {
    padding: 0.4rem 0.55rem;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    background: #fafbfc;
}

.app-exam-subjects-grid .app-subj-title {
    font-size: 0.75rem;
    margin-bottom: 0.28rem;
}

.app-exam-subjects-grid .app-subj-fields {
    column-gap: 0.5rem;
}

.app-exam-subjects-grid .app-subj-mark-label {
    font-size: 0.7rem;
}

.app-exam-subjects-grid .app-mark-input {
    width: 3.35rem;
    min-width: 3rem;
    padding-left: 0.3rem;
    padding-right: 0.3rem;
}

.app-exam-input-compact {
    font-size: 0.8125rem !important;
    padding: 0.22rem 0.45rem !important;
    min-height: calc(1.4em + 0.35rem + 2px) !important;
}

.app-course-pref .form-label {
    display: block;
}

.app-course-pref .border.rounded-3 {
    border-color: #e2e8f0 !important;
    background: linear-gradient(180deg, #fafbfc 0%, #ffffff 100%) !important;
}

/* Alerts */
.app-form-alert {
    border-radius: var(--app-radius-sm);
    border: none;
    border-left: 4px solid;
    padding: 1rem 1.15rem;
    font-size: 0.9375rem;
}

.app-form-alert-success {
    background: linear-gradient(90deg, #ecfdf5 0%, #f0fdf4 100%);
    border-left-color: #059669;
    color: #065f46;
}

.app-form-alert-danger {
    background: linear-gradient(90deg, #fef2f2 0%, #fff7f7 100%);
    border-left-color: #dc2626;
    color: #7f1d1d;
}

.app-form-info-banner {
    border-radius: var(--app-radius-sm);
    border: none;
    border-left: 4px solid var(--app-brand-mid);
    background: linear-gradient(90deg, #ecfdf5 0%, #f0f9ff 50%, #fffbeb 100%);
    color: #0c4a6e;
    padding: 1rem 1.15rem;
    box-shadow: var(--app-shadow);
}

.app-form-info-banner strong {
    color: var(--app-brand);
}

/* Footer */
.app-form-footer {
    position: relative;
    z-index: 1;
    border-top: 1px solid rgba(12, 74, 110, 0.12);
    margin-top: 1.5rem;
    background: linear-gradient(180deg, rgba(248, 250, 252, 0.5) 0%, rgba(255, 255, 255, 0.92) 45%, #f8fafc 100%);
    box-shadow: 0 -12px 24px -16px rgba(12, 74, 110, 0.12);
}

.app-form-footer-inner {
    max-width: var(--app-content-max);
    margin-left: auto;
    margin-right: auto;
}

.app-form-footer-brand {
    font-size: 0.9375rem;
    font-weight: 700;
    color: var(--app-brand);
    letter-spacing: 0.02em;
}

.app-form-footer-meta {
    font-size: 0.8125rem;
    color: var(--app-text-muted);
}

/* Submit actions */
.app-form-actions-card {
    border-radius: var(--app-radius);
    background: linear-gradient(165deg, #f8fafc 0%, #ffffff 100%);
    border: 1px solid var(--app-border) !important;
    box-shadow: var(--app-shadow);
}

.app-form-actions-card {
    position: sticky;
    bottom: 0.75rem;
    z-index: 2;
}

.app-form-actions-card .card-body {
    border-radius: var(--app-radius);
}

.app-form-btn-submit {
    font-weight: 600;
    border: none;
    border-radius: var(--app-radius-sm);
    padding: 0.65rem 1.5rem;
    color: #fff;
    background: linear-gradient(135deg, var(--app-brand) 0%, var(--app-brand-mid) 55%, #0284c7 100%);
    box-shadow: 0 4px 14px -3px rgba(12, 74, 110, 0.45);
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.app-form-btn-submit:hover {
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 6px 20px -4px rgba(12, 74, 110, 0.5);
}

.app-form-btn-submit:active {
    transform: translateY(0);
}

.app-form-btn-back {
    font-weight: 600;
    border-radius: var(--app-radius-sm);
    border: 2px solid #cbd5e1;
    color: #475569;
    background: #fff;
    border-color: #cbd5e1;
}

.app-form-btn-back:hover {
    background: #f8fafc;
    border-color: #94a3b8;
    color: #334155;
}

/* Legacy alert compatibility */
.app-form-page .alert:not(.app-form-alert):not(.app-form-info-banner) {
    border-radius: var(--app-radius-sm);
}