/* ============================================================================
   MedicalAdmin — Design System
   Spec: docs/specs/002-ux-foundation
   Convención: tokens en :root, componentes con prefijo .app- o nombre semántico.
   No reemplaza Bootstrap; se carga después y sobrescribe por superficies de marca.
   ============================================================================ */

:root {
    /* ---------- Color: surfaces & text ---------- */
    --color-surface: #f6f8fb;
    --color-surface-elevated: #ffffff;
    --color-surface-sunken: #eef2f7;
    --color-border: #e3e8ef;
    --color-border-strong: #c9d1db;
    --color-text: #1f2937;
    --color-text-muted: #5b6b7d;
    --color-text-inverse: #ffffff;

    /* ---------- Color: brand (clinical teal-blue) ---------- */
    --color-primary: #0d7c93;
    --color-primary-hover: #0a6577;
    --color-primary-active: #084f5d;
    --color-primary-soft: #e1f1f5;
    --color-primary-strong: #074552;

    /* ---------- Color: semantic ---------- */
    --color-success: #1f7a4a;
    --color-success-soft: #e2f3ea;
    --color-warning: #a86200;
    --color-warning-soft: #fdf1d8;
    --color-danger: #b3261e;
    --color-danger-soft: #fbe5e3;
    --color-info: #1c5fa8;
    --color-info-soft: #e3eefb;

    /* ---------- Sidebar palette ---------- */
    --color-sidebar-bg: #ffffff;
    --color-sidebar-text: #38465a;
    --color-sidebar-text-muted: #8a97a8;
    --color-sidebar-active-bg: var(--color-primary-soft);
    --color-sidebar-active-text: var(--color-primary-strong);
    --color-sidebar-border: var(--color-border);

    /* ---------- Typography ---------- */
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Inter",
                 "Helvetica Neue", Arial, sans-serif;
    --font-size-xs: 0.75rem;     /* 12 */
    --font-size-sm: 0.875rem;    /* 14 */
    --font-size-base: 0.9375rem; /* 15 */
    --font-size-lg: 1.0625rem;   /* 17 */
    --font-size-xl: 1.25rem;     /* 20 */
    --font-size-2xl: 1.5rem;     /* 24 */
    --font-size-3xl: 1.875rem;   /* 30 */
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --line-height-tight: 1.2;
    --line-height-base: 1.5;
    --line-height-relaxed: 1.7;

    /* ---------- Spacing scale ---------- */
    --space-1: 0.25rem;  /* 4 */
    --space-2: 0.5rem;   /* 8 */
    --space-3: 0.75rem;  /* 12 */
    --space-4: 1rem;     /* 16 */
    --space-5: 1.25rem;  /* 20 */
    --space-6: 1.5rem;   /* 24 */
    --space-7: 2rem;     /* 32 */
    --space-8: 3rem;     /* 48 */

    /* ---------- Radius & shadow ---------- */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-pill: 999px;
    --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
    --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.12);

    /* ---------- Layout ---------- */
    --topbar-height: 56px;
    --sidebar-width: 240px;
}

/* ============================================================================
   Base
   ============================================================================ */
html, body {
    background-color: var(--color-surface);
    color: var(--color-text);
    font-family: var(--font-sans);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
}

a {
    color: var(--color-primary);
    text-decoration: none;
}
a:hover { color: var(--color-primary-hover); text-decoration: underline; }

*:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

hr { border-color: var(--color-border); opacity: 1; }

/* ============================================================================
   App shell
   ============================================================================ */
.app-topbar {
    background-color: var(--color-surface-elevated);
    border-bottom: 1px solid var(--color-border);
    height: var(--topbar-height);
    display: flex;
    align-items: center;
    padding: 0 var(--space-5);
    position: sticky;
    top: 0;
    z-index: 1020;
}

.app-topbar .brand {
    color: var(--color-text);
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-lg);
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    text-decoration: none;
}
.app-topbar .brand:hover { color: var(--color-primary); text-decoration: none; }
.app-topbar .brand i { color: var(--color-primary); }

.app-topbar-actions {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.app-body {
    display: flex;
    min-height: calc(100vh - var(--topbar-height));
}

.app-sidebar {
    width: var(--sidebar-width);
    flex: 0 0 var(--sidebar-width);
    background-color: var(--color-sidebar-bg);
    border-right: 1px solid var(--color-sidebar-border);
    padding: var(--space-5) var(--space-3);
    overflow-y: auto;
}

.app-sidebar .section-label {
    text-transform: uppercase;
    font-size: var(--font-size-xs);
    letter-spacing: 0.05em;
    color: var(--color-sidebar-text-muted);
    font-weight: var(--font-weight-semibold);
    padding: 0 var(--space-3);
    margin: var(--space-4) 0 var(--space-2);
}
.app-sidebar .section-label:first-child { margin-top: 0; }

.app-sidebar .nav-link {
    color: var(--color-sidebar-text);
    border-radius: var(--radius-md);
    padding: var(--space-2) var(--space-3);
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    border-left: 3px solid transparent;
    margin-bottom: 2px;
    transition: background-color 120ms ease, color 120ms ease;
}
.app-sidebar .nav-link:hover {
    background-color: var(--color-surface-sunken);
    color: var(--color-text);
    text-decoration: none;
}
.app-sidebar .nav-link.active,
.app-sidebar .nav-link[aria-current="page"] {
    background-color: var(--color-sidebar-active-bg);
    color: var(--color-sidebar-active-text);
    border-left-color: var(--color-primary);
}
.app-sidebar .nav-link i { width: 1.1rem; text-align: center; }

.app-content {
    flex: 1 1 auto;
    padding: var(--space-5) var(--space-6);
    min-width: 0; /* prevent flex overflow with tables */
}

/* ============================================================================
   Chips
   ============================================================================ */
.chip {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-pill);
    background-color: var(--color-surface-sunken);
    color: var(--color-text);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    border: 1px solid var(--color-border);
    line-height: 1.4;
}
.chip i { color: var(--color-text-muted); }

.chip-primary {
    background-color: var(--color-primary-soft);
    color: var(--color-primary-strong);
    border-color: transparent;
}
.chip-primary i { color: var(--color-primary); }

.chip-user {
    background: transparent;
    border-color: transparent;
    color: var(--color-text-muted);
    padding-left: var(--space-2);
    padding-right: var(--space-2);
}
.chip-user strong { color: var(--color-text); font-weight: var(--font-weight-semibold); }

.role-badge {
    display: inline-block;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    padding: 2px var(--space-2);
    border-radius: var(--radius-sm);
    background-color: var(--color-surface-sunken);
    color: var(--color-text-muted);
    margin-left: var(--space-2);
}

/* ============================================================================
   Tenant switcher dropdown (rich)
   ============================================================================ */
.tenant-switcher .dropdown-menu {
    min-width: 280px;
    padding: var(--space-2) 0;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border);
}
.tenant-switcher .dropdown-header {
    color: var(--color-text-muted);
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    padding: var(--space-2) var(--space-4);
}
.tenant-switcher .tenant-option {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    width: 100%;
    padding: var(--space-2) var(--space-4);
    background: none;
    border: 0;
    text-align: left;
    color: var(--color-text);
    font-size: var(--font-size-sm);
}
.tenant-switcher .tenant-option:hover { background-color: var(--color-surface-sunken); }
.tenant-switcher .tenant-option.is-active { color: var(--color-primary-strong); font-weight: var(--font-weight-semibold); }
.tenant-switcher .tenant-option .check { margin-left: auto; color: var(--color-primary); }
.tenant-switcher .tenant-option .check.is-hidden { visibility: hidden; }

/* ============================================================================
   Page header
   ============================================================================ */
.page-header {
    margin-bottom: var(--space-5);
}
.page-header .breadcrumb {
    margin-bottom: var(--space-3);
    font-size: var(--font-size-sm);
    background: transparent;
    padding: 0;
}
.page-header .breadcrumb a { color: var(--color-text-muted); }
.page-header .breadcrumb .active { color: var(--color-text); }
.page-header-row {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--space-4);
    flex-wrap: wrap;
}
.page-header-title {
    margin: 0;
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-tight);
    display: flex;
    align-items: center;
    gap: var(--space-3);
}
.page-header-title i { color: var(--color-primary); }
.page-header-subtitle {
    color: var(--color-text-muted);
    margin: var(--space-1) 0 0;
    font-size: var(--font-size-sm);
}
.page-header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    flex-wrap: wrap;
}

/* ============================================================================
   Filter bar
   ============================================================================ */
.filter-bar {
    background-color: var(--color-surface-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-4);
    margin-bottom: var(--space-4);
    box-shadow: var(--shadow-sm);
}

/* ============================================================================
   Cards & tables — visual harmonization with Bootstrap
   ============================================================================ */
.card {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}
.card-header { background-color: var(--color-surface-elevated); border-bottom: 1px solid var(--color-border); }
.table > :not(caption) > * > * { vertical-align: middle; }
.table thead.table-light th {
    background-color: var(--color-surface-sunken);
    color: var(--color-text-muted);
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    border-bottom: 1px solid var(--color-border);
}

/* ============================================================================
   Buttons — brand color
   ============================================================================ */
.btn-primary {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
}
.btn-primary:hover,
.btn-primary:focus {
    background-color: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
}
.btn-primary:active,
.btn-primary.active {
    background-color: var(--color-primary-active);
    border-color: var(--color-primary-active);
}
.btn-outline-primary {
    color: var(--color-primary);
    border-color: var(--color-primary);
}
.btn-outline-primary:hover {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
}
.text-primary { color: var(--color-primary) !important; }
.bg-primary { background-color: var(--color-primary) !important; }
.border-primary { border-color: var(--color-primary) !important; }

/* ============================================================================
   State partials
   ============================================================================ */
.state-block {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--space-7) var(--space-5);
    background-color: var(--color-surface-elevated);
    border: 1px dashed var(--color-border);
    border-radius: var(--radius-md);
}
.state-block .state-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-pill);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-surface-sunken);
    color: var(--color-text-muted);
    font-size: 1.75rem;
    margin-bottom: var(--space-4);
}
.state-block .state-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
    margin: 0;
}
.state-block .state-message {
    color: var(--color-text-muted);
    margin: var(--space-2) 0 0;
    max-width: 36rem;
}
.state-block .state-action { margin-top: var(--space-4); }

.state-block.state-error .state-icon {
    background-color: var(--color-danger-soft);
    color: var(--color-danger);
}
.state-block.state-error .state-title { color: var(--color-danger); }

.state-block.state-forbidden .state-icon,
.state-block.state-unauthorized .state-icon {
    background-color: var(--color-warning-soft);
    color: var(--color-warning);
}

.tenant-banner {
    background-color: var(--color-warning-soft);
    color: var(--color-warning);
    border: 1px solid color-mix(in srgb, var(--color-warning) 25%, transparent);
    border-radius: var(--radius-md);
    padding: var(--space-3) var(--space-4);
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
}
.tenant-banner a { color: var(--color-warning); text-decoration: underline; font-weight: var(--font-weight-semibold); }

/* ============================================================================
   Skeleton loaders
   ============================================================================ */
@keyframes skeleton-shimmer {
    0%   { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}
.skeleton {
    display: block;
    background: linear-gradient(90deg,
        var(--color-surface-sunken) 0%,
        color-mix(in srgb, var(--color-surface-sunken) 70%, white) 50%,
        var(--color-surface-sunken) 100%);
    background-size: 200% 100%;
    animation: skeleton-shimmer 1.4s ease-in-out infinite;
    border-radius: var(--radius-sm);
    color: transparent;
    user-select: none;
}
.skeleton-text { height: 0.85rem; margin: 0.35rem 0; }
.skeleton-text.w-25 { width: 25%; }
.skeleton-text.w-50 { width: 50%; }
.skeleton-text.w-75 { width: 75%; }
.skeleton-text.w-100 { width: 100%; }
.skeleton-circle { width: 2.5rem; height: 2.5rem; border-radius: var(--radius-pill); }
.skeleton-card { height: 7rem; border-radius: var(--radius-md); }

@media (prefers-reduced-motion: reduce) {
    .skeleton { animation: none; }
}

/* ============================================================================
   Tenant card grid (SelectTenant)
   ============================================================================ */
.tenant-card {
    background-color: var(--color-surface-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-5);
    text-align: left;
    width: 100%;
    display: flex;
    align-items: center;
    gap: var(--space-4);
    transition: border-color 120ms ease, box-shadow 120ms ease, transform 120ms ease;
    cursor: pointer;
}
.tenant-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}
.tenant-card .tenant-card-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background-color: var(--color-primary-soft);
    color: var(--color-primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}
.tenant-card .tenant-card-name {
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-base);
    color: var(--color-text);
    margin: 0;
}
.tenant-card .tenant-card-hint {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    margin: 0;
}
.tenant-card .tenant-card-cta {
    margin-left: auto;
    color: var(--color-primary);
}

/* ============================================================================
   Login screen
   ============================================================================ */
.login-shell {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background:
        radial-gradient(circle at top left, var(--color-primary-soft), transparent 40%),
        radial-gradient(circle at bottom right, var(--color-info-soft), transparent 40%),
        var(--color-surface);
    padding: var(--space-5);
}
.login-card {
    background-color: var(--color-surface-elevated);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--color-border);
    width: 100%;
    max-width: 420px;
    padding: var(--space-7);
}
.login-card .login-brand {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: var(--space-5);
}
.login-card .login-brand i { font-size: 2.5rem; color: var(--color-primary); }
.login-card .login-brand h1 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    margin: var(--space-2) 0 0;
}
.login-card .login-brand p { color: var(--color-text-muted); font-size: var(--font-size-sm); margin: var(--space-1) 0 0; }

/* ============================================================================
   Small responsiveness — hide sidebar on narrow viewports (basic)
   ============================================================================ */
@media (max-width: 768px) {
    .app-sidebar { display: none; }
    .app-content { padding: var(--space-4); }
    .chip-user { display: none; }
}