/*
 * LMS visual language for the authenticated U5 application.
 *
 * This intentionally starts at .app-container so the public landing and its
 * sign-in dialog keep their own, separately scoped presentation.
 */
.app-container {
    --u5-lms-ink: #202e2a;
    --u5-lms-ink-soft: #4f5d56;
    --u5-lms-muted: #6d7771;
    --u5-lms-canvas: #fcfcfb;
    --u5-lms-sage: #edf3ed;
    --u5-lms-sage-strong: #e2ece3;
    --u5-lms-sage-deep: #d4e3d6;
    --u5-lms-line: #e3e7e3;
    --u5-lms-line-strong: #cfd7d0;
    --u5-lms-green: #255c4d;
    --u5-lms-green-hover: #174735;
    --u5-lms-green-soft: #e5eee5;
    --u5-lms-focus: #afcbb7;
    --u5-lms-danger: #a34a32;
    --u5-lms-danger-soft: #fff4ef;

    /* Existing components consume these variables throughout the app. */
    --primary-color: var(--u5-lms-green);
    --primary-dark: var(--u5-lms-green-hover);
    --primary-light: var(--u5-lms-green-soft);
    --primary-gradient: var(--u5-lms-green);
    --secondary-color: var(--u5-lms-sage);
    --accent-color: var(--u5-lms-green);
    --accent-secondary: var(--u5-lms-green);
    --accent-light: var(--u5-lms-green-soft);
    --success-color: #2e7a5b;
    --info-color: #356f8e;
    --warning-color: #9a6a16;
    --danger-color: var(--u5-lms-danger);
    --error-color: var(--u5-lms-danger);
    --bg-body: var(--u5-lms-canvas);
    --bg-primary: var(--u5-lms-canvas);
    --bg-secondary: #f6f8f5;
    --bg-card: #ffffff;
    --bg-sidebar: var(--u5-lms-sage);
    --sidebar-text: var(--u5-lms-ink-soft);
    --sidebar-text-muted: #68776d;
    --sidebar-hover-bg: var(--u5-lms-sage-strong);
    --sidebar-active-text: var(--u5-lms-green-hover);
    --text-primary: var(--u5-lms-ink);
    --text-secondary: var(--u5-lms-muted);
    --text-light: #ffffff;
    --border-color: var(--u5-lms-line);
    --border-radius: 10px;
    --border-radius-sm: 7px;
    --radius-sm: 7px;
    --shadow-sm: none;
    --shadow-md: none;
    --shadow-lg: none;
    --shadow-xl: none;
    --shadow-elevated: none;
    --shadow-accent: none;

    min-height: 100vh;
    background: var(--u5-lms-canvas);
    color: var(--u5-lms-ink);
    font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.5;
}

.app-container :is(button, input, select, textarea) {
    font: inherit;
}

/* Navigation: quiet, readable sage rail like the LMS. */
.app-container .sidebar {
    background: var(--u5-lms-sage);
    color: var(--u5-lms-ink-soft);
    border-right: 1px solid var(--u5-lms-line);
    box-shadow: none;
}

.app-container .sidebar::-webkit-scrollbar-thumb {
    background: #c3d2c6;
}

.app-container .sidebar::-webkit-scrollbar-thumb:hover {
    background: #9fb8a5;
}

.app-container .sidebar-logo {
    filter: none;
}

.app-container .sidebar-brand {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 64px;
    margin: 0.1rem 0.15rem 0.9rem;
    padding: 0.35rem;
    border-bottom: 1px solid var(--u5-lms-line);
}

.app-container .sidebar-brand .sidebar-logo {
    width: 42px;
    height: 50px;
    margin: 0;
    object-fit: contain;
}

.app-container .sidebar-toggle {
    background: #ffffff;
    border: 1px solid var(--u5-lms-line-strong);
    color: var(--u5-lms-green);
    box-shadow: none;
}

.app-container .sidebar-toggle:hover {
    background: var(--u5-lms-green-soft);
    color: var(--u5-lms-green-hover);
}

.app-container .section-title {
    color: #5e7064;
    font-size: 0.68rem;
    font-weight: 750;
    letter-spacing: 0.1em;
}

.app-container .section-title-button {
    background: transparent;
    border: 0;
}

.app-container .sidebar nav ul li button,
.app-container .sidebar nav ul li button.btn {
    min-height: 38px;
    border: 0;
    border-radius: 7px;
    background: transparent !important;
    box-shadow: none;
    color: var(--u5-lms-ink-soft);
    font-size: 0.875rem;
    font-weight: 550;
    letter-spacing: 0;
    text-shadow: none;
}

.app-container .sidebar nav ul li button::before,
.app-container .sidebar nav ul li button::after {
    content: none;
}

.app-container .sidebar nav ul li button:hover,
.app-container .sidebar nav ul li button.btn:hover {
    background: var(--u5-lms-sage-strong) !important;
    box-shadow: none;
    color: var(--u5-lms-green-hover);
    transform: none;
}

.app-container .sidebar nav ul li button.active,
.app-container .sidebar nav ul li button.btn.active {
    background: var(--u5-lms-green-soft) !important;
    box-shadow: none !important;
    color: var(--u5-lms-green-hover);
    font-weight: 700;
}

.app-container .sidebar nav ul li button.active .nav-icon {
    stroke: currentColor;
}

.app-container .portal-identity {
    background: rgba(255, 255, 255, 0.55);
    border: 1px solid var(--u5-lms-line);
    color: var(--u5-lms-ink);
    box-shadow: none;
}

.app-container .portal-identity small,
.app-container .active-tenant-label {
    color: var(--u5-lms-muted);
}

.app-container .active-tenant-bar {
    border-color: var(--u5-lms-line);
    background: rgba(255, 255, 255, 0.45);
}

.app-container .btn-change-school,
.app-container .theme-mode-toggle button {
    border-color: var(--u5-lms-line-strong);
    background: #ffffff;
    color: var(--u5-lms-ink-soft);
}

.app-container .theme-mode-toggle button.is-active,
.app-container .theme-mode-toggle button[aria-pressed="true"] {
    background: var(--u5-lms-green-soft);
    border-color: var(--u5-lms-green);
    color: var(--u5-lms-green-hover);
}

.app-container .btn-logout {
    margin-top: 0.75rem;
    border: 1px solid var(--u5-lms-line-strong);
    background: transparent !important;
    color: var(--u5-lms-ink-soft) !important;
    box-shadow: none !important;
}

.app-container .btn-logout:hover {
    border-color: var(--u5-lms-green);
    background: #ffffff !important;
    color: var(--u5-lms-green-hover) !important;
}

/* Canvas, typography, and shared work surfaces. */
.app-container .main-content {
    background: var(--u5-lms-canvas);
    padding: clamp(1.5rem, 3vw, 2.75rem) clamp(1.25rem, 3.4vw, 3.5rem);
}

.app-container .content-section {
    max-width: 1280px;
}

.app-container :is(h1, h2, h3, h4, h5, h6) {
    color: var(--u5-lms-ink);
    font-family: inherit;
    letter-spacing: -0.025em;
}

.app-container .dashboard-header {
    max-width: 820px;
    margin-bottom: 1.75rem;
    padding: 0;
    border: 0;
    border-radius: 0;
    background: transparent;
}

.app-container .dashboard-header h1 {
    max-width: 18ch;
    margin: 0 0 0.5rem;
    color: var(--u5-lms-ink);
    font-family: inherit;
    font-size: clamp(2rem, 3.5vw, 2.75rem);
    font-weight: 750;
    letter-spacing: -0.045em;
    line-height: 1.08;
}

.app-container .dashboard-subtitle {
    max-width: 65ch;
    color: var(--u5-lms-muted);
    font-size: 0.975rem;
    line-height: 1.6;
}

.app-container .dashboard-header h1::after {
    display: none;
}

.app-container .content-section :is(h1, h2)[tabindex="-1"]:focus-visible {
    border-radius: 7px;
    outline-color: var(--u5-lms-focus);
}

.app-container :is(.portal-panel, .dashboard-attention, .section-load-error) {
    border: 1px solid var(--u5-lms-line);
    border-radius: 10px;
    box-shadow: none;
}

.app-container .portal-panel {
    margin-bottom: 1rem;
    padding: clamp(1rem, 2vw, 1.35rem);
    background: var(--u5-lms-sage);
}

.app-container .portal-panel-header {
    margin-bottom: 0.9rem;
}

.app-container .portal-panel-header h2 {
    font-size: 1rem;
    font-weight: 720;
    letter-spacing: -0.015em;
}

.app-container .portal-role-pill {
    border-radius: 999px;
    background: #ffffff;
    color: var(--u5-lms-green-hover);
    font-size: 0.72rem;
    font-weight: 700;
}

.app-container .portal-action-grid {
    gap: 0.55rem;
}

.app-container .portal-action {
    min-height: 42px;
    border: 1px solid var(--u5-lms-line-strong);
    border-radius: 7px;
    background: #ffffff;
    color: var(--u5-lms-ink);
    box-shadow: none;
    font-size: 0.86rem;
    font-weight: 650;
}

.app-container .portal-action:hover {
    border-color: #91ae99;
    background: var(--u5-lms-green-soft);
    color: var(--u5-lms-green-hover);
}

/* The role queue remains prominent without the older floating-card treatment. */
.app-container .dashboard-attention {
    gap: 1rem;
    margin: 1rem 0 1.15rem;
    padding: clamp(1rem, 2vw, 1.3rem);
    background: #ffffff;
}

.app-container .dashboard-attention-heading h2,
.app-container .dashboard-frequent h3 {
    font-size: 1.1rem;
    font-weight: 720;
}

.app-container .dashboard-attention-summary,
.app-container .dashboard-attention-age,
.app-container .dashboard-attention-card p,
.app-container .dashboard-attention-facts dt,
.app-container .dashboard-frequent-task span {
    color: var(--u5-lms-muted);
}

.app-container .dashboard-attention-card {
    border-color: var(--u5-lms-line);
    border-radius: 7px;
    background: #ffffff;
}

.app-container .dashboard-attention-card.dashboard-attention-due-soon {
    border-color: #ddc687;
    background: #fffdf5;
}

.app-container .dashboard-attention-card.dashboard-attention-overdue {
    border-color: #edc8ba;
    background: var(--u5-lms-danger-soft);
}

.app-container .dashboard-attention-card.dashboard-attention-unknown {
    border-color: var(--u5-lms-line-strong);
}

.app-container .dashboard-attention-empty {
    border-color: var(--u5-lms-line-strong);
    border-radius: 7px;
    background: #f9fbf8;
    color: var(--u5-lms-muted);
}

.app-container .dashboard-frequent {
    border-top-color: var(--u5-lms-line);
}

.app-container .dashboard-frequent-task {
    border-color: var(--u5-lms-line);
    border-radius: 7px;
    background: #ffffff;
    box-shadow: none;
}

.app-container .dashboard-frequent-task:hover {
    border-color: #91ae99;
    box-shadow: none;
}

.app-container .ops-error {
    border: 1px solid #edc8ba;
    border-radius: 7px;
    background: var(--u5-lms-danger-soft);
    color: #8c462e;
}

.app-container .ops-permission-notice,
.app-container .ops-data-state {
    border-color: var(--u5-lms-line-strong);
    border-radius: 7px;
    background: #f8faf7;
    color: var(--u5-lms-muted);
}

/* Compact metrics: one calm, related information band. */
.app-container .dashboard-stats {
    gap: 0;
    margin: 0 0 1.5rem;
    overflow: hidden;
    border: 1px solid var(--u5-lms-line);
    border-radius: 10px;
    background: #ffffff;
}

.app-container .dashboard-stat-link,
.app-container .stat-card {
    min-height: 106px;
    padding: 1rem 1.1rem;
    border: 0;
    border-right: 1px solid var(--u5-lms-line);
    border-radius: 0;
    background: #ffffff;
    box-shadow: none;
    color: var(--u5-lms-ink);
}

.app-container .dashboard-stat-link:last-child {
    border-right: 0;
}

.app-container .dashboard-stat-link:hover,
.app-container .dashboard-stat-link:focus-visible,
.app-container .stat-card:hover {
    border-color: var(--u5-lms-line);
    background: #f8faf7;
    box-shadow: inset 0 -2px 0 var(--u5-lms-green);
    transform: none;
}

.app-container .dashboard-stat-link .stat-icon,
.app-container .dashboard-stat-teachers .stat-icon,
.app-container .dashboard-stat-payments .stat-icon,
.app-container .dashboard-stat-groups .stat-icon {
    width: 40px;
    height: 40px;
    border-radius: 7px;
    background: var(--u5-lms-sage);
    color: var(--u5-lms-green);
}

.app-container .stat-value {
    color: var(--u5-lms-ink);
    font-size: 1.55rem;
    font-weight: 750;
}

.app-container .stat-label {
    color: var(--u5-lms-muted);
    font-size: 0.78rem;
    font-weight: 550;
}

.app-container .dashboard-section {
    max-width: 100%;
    padding-top: 1.25rem;
    border-top-color: var(--u5-lms-line);
}

.app-container .dashboard-section h2 {
    font-family: inherit;
    font-size: 1.15rem;
    font-weight: 720;
    letter-spacing: -0.02em;
}

/* Controls and ordinary content surfaces. */
.app-container .btn {
    border: 1px solid var(--u5-lms-green);
    border-radius: 7px;
    background: var(--u5-lms-green);
    box-shadow: none;
    color: #ffffff;
    font-weight: 650;
    text-shadow: none;
}

.app-container .btn::after {
    content: none;
}

.app-container .btn:hover {
    border-color: var(--u5-lms-green-hover);
    background: var(--u5-lms-green-hover);
    box-shadow: none;
    transform: translateY(-1px);
}

.app-container .btn:active {
    box-shadow: none;
    transform: none;
}

.app-container :is(.btn-primary, .btn-accent, .btn-edit, .btn-success) {
    border-color: var(--u5-lms-green);
    background: var(--u5-lms-green);
    color: #ffffff;
}

.app-container :is(.btn-primary, .btn-accent, .btn-edit, .btn-success):hover {
    border-color: var(--u5-lms-green-hover);
    background: var(--u5-lms-green-hover);
}

.app-container :is(.btn-outline, .btn-ghost) {
    border-color: var(--u5-lms-line-strong);
    background: #ffffff;
    color: var(--u5-lms-green-hover);
}

.app-container :is(.btn-outline, .btn-ghost):hover {
    border-color: var(--u5-lms-green);
    background: var(--u5-lms-green-soft);
    color: var(--u5-lms-green-hover);
}

.app-container :is(.btn-delete, .btn-danger) {
    border-color: var(--u5-lms-danger);
    background: var(--u5-lms-danger);
    color: #ffffff;
}

.app-container :is(.btn-delete, .btn-danger):hover {
    border-color: #7f3524;
    background: #7f3524;
}

.app-container :is(input:not([type="checkbox"]):not([type="radio"]), select, textarea) {
    border-color: var(--u5-lms-line-strong);
    border-radius: 6px;
    background: #ffffff;
    color: var(--u5-lms-ink);
    box-shadow: none;
}

.app-container :is(input:not([type="checkbox"]):not([type="radio"]), select, textarea)::placeholder {
    color: #89928c;
}

.app-container :is(input:not([type="checkbox"]):not([type="radio"]), select, textarea):focus {
    border-color: #7da48a;
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--u5-lms-focus) 60%, transparent);
    outline: 0;
}

.app-container :is(.card, .form-container, .content-card, .table-container, .data-table-wrapper, .section-card) {
    border-color: var(--u5-lms-line);
    border-radius: 10px;
    box-shadow: none;
}

.app-container :is(table, .data-table) {
    border-color: var(--u5-lms-line);
}

.app-container :is(th, .data-table th) {
    border-color: var(--u5-lms-line);
    background: #f6f8f5;
    color: var(--u5-lms-ink-soft);
}

.app-container :is(td, .data-table td) {
    border-color: var(--u5-lms-line);
    color: var(--u5-lms-ink);
}

.app-container :is(tr:hover td, .data-table tr:hover td) {
    background: #f8faf7;
}

.app-container :is(button, a, input, select, textarea):focus-visible {
    outline: 3px solid var(--u5-lms-focus);
    outline-offset: 2px;
}

/* Modals physically inside the app use the same surfaces.  Most legacy
 * overlays are siblings after .app-container, hence the second selector. */
.app-container :is(.modal, .modal-rebuilt),
.app-container ~ .modal-overlay :is(.modal, .modal-rebuilt) {
    border: 1px solid var(--u5-lms-line);
    border-radius: 12px;
    background: #ffffff;
    box-shadow: 0 18px 90px rgba(24, 55, 34, 0.15);
    color: var(--u5-lms-ink);
    font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.app-container ~ .modal-overlay {
    background: rgba(32, 46, 42, 0.3);
}

.app-container :is(.modal-header, .modal-dialog-header),
.app-container ~ .modal-overlay :is(.modal-header, .modal-dialog-header) {
    border-color: var(--u5-lms-line);
}

.app-container :is(.modal-close, .close),
.app-container ~ .modal-overlay :is(.modal-close, .close) {
    border-color: var(--u5-lms-line-strong);
    background: #ffffff;
    color: var(--u5-lms-ink-soft);
}

/* Preserve a usable alternate theme for the existing control. */
body.dark-mode .app-container {
    --u5-lms-ink: #edf5ee;
    --u5-lms-ink-soft: #d3dfd4;
    --u5-lms-muted: #aebcaf;
    --u5-lms-canvas: #18231d;
    --u5-lms-sage: #213129;
    --u5-lms-sage-strong: #2a3d31;
    --u5-lms-sage-deep: #34503e;
    --u5-lms-line: #35463a;
    --u5-lms-line-strong: #485d4d;
    --u5-lms-green: #8ab99a;
    --u5-lms-green-hover: #b4d8bd;
    --u5-lms-green-soft: #2c4433;
    --u5-lms-focus: #b7d8be;
    --bg-card: #202d25;
    --bg-secondary: #1c2821;
    --text-light: #17241b;
}

body.dark-mode .app-container .sidebar,
body.dark-mode .app-container .portal-panel,
body.dark-mode .app-container .dashboard-stat-link,
body.dark-mode .app-container .stat-card,
body.dark-mode .app-container .portal-action,
body.dark-mode .app-container .dashboard-attention,
body.dark-mode .app-container .dashboard-attention-card,
body.dark-mode .app-container .dashboard-frequent-task,
body.dark-mode .app-container :is(.btn-outline, .btn-ghost),
body.dark-mode .app-container :is(input:not([type="checkbox"]):not([type="radio"]), select, textarea) {
    background: var(--bg-card);
}

body.dark-mode .app-container .portal-role-pill {
    background: var(--u5-lms-green-soft);
    color: #edf5ee;
}

body.dark-mode .app-container :is(th, .data-table th) {
    background: #26362c;
}

@media (max-width: 1100px) {
    .app-container .dashboard-stats {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .app-container .dashboard-stat-link:nth-child(2) {
        border-right: 0;
    }

    .app-container .dashboard-stat-link:nth-child(n + 3) {
        border-top: 1px solid var(--u5-lms-line);
    }
}

@media (max-width: 760px) {
    .app-container .main-content {
        padding: 1.25rem 1rem 2rem;
    }

    .app-container .dashboard-header h1 {
        font-size: clamp(1.8rem, 9vw, 2.3rem);
    }

    .app-container .portal-panel-header,
    .app-container .dashboard-attention-heading {
        align-items: flex-start;
        flex-direction: column;
    }

    .app-container .portal-action-grid {
        grid-template-columns: 1fr;
    }
}

.app-container .sidebar.collapsed .sidebar-brand {
    margin-bottom: 0.65rem;
    padding: 0.15rem 0;
}

.app-container .sidebar.collapsed .sidebar-brand .sidebar-logo {
    width: 34px;
    height: 42px;
    margin: 0;
}

/* Conserva el monograma U5 en la navegación compacta de teléfonos. */
@media (max-width: 768px) {
    .app-container .sidebar-brand {
        min-height: 48px;
        margin: 0 0 0.5rem;
        padding: 0.15rem 0 0.45rem;
    }

    .app-container .sidebar-brand .sidebar-logo {
        display: block !important;
        width: 32px;
        height: 38px;
    }
}

@media (max-width: 560px) {
    .app-container .dashboard-stats {
        grid-template-columns: 1fr;
    }

    .app-container .dashboard-stat-link,
    .app-container .dashboard-stat-link:nth-child(2) {
        min-height: 86px;
        border-right: 0;
        border-top: 1px solid var(--u5-lms-line);
    }

    .app-container .dashboard-stat-link:first-child {
        border-top: 0;
    }
}

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