/* ============================================
   SkinLab – Base Stylesheet
   Variables + Reset + Utilidades base
   Mobile First approach
   ============================================ */

/* ── Design System Tokens ── */
:root {
    color-scheme: light;

    /* ── Typography ── */
    --sl-font:          'Lato', -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
    --sl-font-mono:     'Consolas', 'Monaco', 'Courier New', monospace;

    --sl-text-xs:       0.8125rem;  /* 13px — badges, tags, uppercase labels */
    --sl-text-sm:       0.875rem;   /* 14px — hints, metadata */
    --sl-text-base:     1rem;       /* 16px — body, inputs, buttons */
    --sl-text-md:       1.0625rem;  /* 17px — body principal */
    --sl-text-lg:       1.25rem;    /* 20px — h3, títulos de sección */
    --sl-text-xl:       1.5rem;     /* 24px — h2, títulos de página */
    --sl-text-2xl:      2rem;       /* 32px — h1, hero */

    --sl-weight-normal:   400;
    --sl-weight-medium:   500;
    --sl-weight-semibold: 600;
    --sl-weight-bold:     700;

    --sl-leading-tight:   1.25;
    --sl-leading-normal:  1.5;
    --sl-leading-relaxed: 1.7;

    /* ── Spacing (múltiplos de 4px) ── */
    --sl-space-1:  0.25rem;   /* 4px */
    --sl-space-2:  0.5rem;    /* 8px */
    --sl-space-3:  0.75rem;   /* 12px */
    --sl-space-4:  1rem;      /* 16px */
    --sl-space-5:  1.25rem;   /* 20px */
    --sl-space-6:  1.5rem;    /* 24px */
    --sl-space-8:  2rem;      /* 32px */
    --sl-space-10: 2.5rem;    /* 40px */
    --sl-space-12: 3rem;      /* 48px */

    /* ── Colors (SkinLab brand) ── */
    --sl-primary:       #495293;    /* Victoria — botones, enlaces, acentos */
    --sl-primary-hover: #4D6BD0;
    --sl-primary-dark:  #2E4A9E;
    --sl-brand:         #332550;    /* Port Gore — sidebar, toolbar, marca */
    --sl-brand-light:   #D92579;
    --sl-accent:        #BFCDF1;    /* Spindle — fondos suaves, badges */
    --sl-highlight:     #e87c53;    /* Burnt Sienna — CTA, notificaciones */
    --sl-secondary:     #3E5DC2;
    --sl-secondary-light: #4D6BD0;
    --sl-white:         #FEFEFE;

    /* Backgrounds */
    --sl-bg:            #F5F5F5;
    --sl-bg-white:      #FEFEFE;
    --sl-bg-dark:       #1A1A2E;

    /* Text */
    --sl-text:          #2D3045;
    --sl-text-light:    #566069;
    --sl-text-muted:    #717B84;
    --sl-page-title:    #555555;

    /* Borders */
    --sl-border:        #C7CDD1;
    --sl-border-light:  #E0E0E0;

    /* Status */
    --sl-success:       #0B874B;
    --sl-success-bg:    #E8F5E9;
    --sl-danger:        #C62828;
    --sl-danger-bg:     #FFEBEE;
    --sl-warning:       #FC7E2C;    /* Pumpkin Spice */
    --sl-warning-dark:  #E56A1A;
    --sl-warning-bg:    #FFF3E0;

    /* ── Borders & Radius ── */
    --sl-radius:        0.375rem;   /* 6px — inputs, buttons */
    --sl-radius-lg:     0.75rem;    /* 12px — cards, modals */
    --sl-radius-full:   9999px;     /* pills, avatars */
    --sl-border-width:  1px;
    --sl-border-width-thick: 2px;

    /* ── Shadows ── */
    --sl-shadow-sm:     0 1px 3px color-mix(in srgb, black 8%, transparent);
    --sl-shadow:        0 0.25rem 0.75rem color-mix(in srgb, black 10%, transparent);
    --sl-shadow-lg:     0 1.25rem 3.75rem color-mix(in srgb, black 30%, transparent);

    /* ── Transitions ── */
    --sl-transition:      0.25s ease;
    --sl-transition-fast: 0.15s ease;

    /* Canvas LMS Variables (heredadas por proyectos) */
    --ic-brand-primary:             #0374B5;
    --ic-brand-font-color-dark:     #2D3B45;
    --ic-link-color:                #0374B5;
    --ic-brand-button--primary-bgd: #0374B5;
    --ic-brand-button--primary-text:#FFFFFF;
    --ic-brand-global-nav-bgd:      #394B58;
}

/* ── Reset ── */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html, html body {
    height: 100%;
    color-scheme: light;
    font-family: var(--sl-font);
    font-size: var(--sl-text-base);
    line-height: var(--sl-leading-normal);
    color: var(--sl-text);
    background: var(--sl-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body h1, body h2, body h3,
body h4, body h5, body h6 {
    color: var(--sl-text);
}

a {
    color: var(--sl-primary);
    text-decoration: none !important;
    transition: color var(--sl-transition-fast);
}

a:hover {
    color: var(--sl-primary-hover);
    text-decoration: none !important;
}

/* Underline solo en enlaces de texto dentro de contenido */
.sl-content-body a:hover,
.docs-body a:hover,
.docs-list a:hover {
    text-decoration: underline;
}

img {
    max-width: 100%;
    height: auto;
}

/* ── Accesibilidad ── */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.sr-only-focusable:focus {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 9999;
    width: auto;
    height: auto;
    padding: 0.5rem 1rem;
    margin: 0;
    overflow: visible;
    clip: auto;
    white-space: normal;
    background: var(--sl-primary);
    color: var(--sl-white);
    font-size: 0.875rem;
    font-weight: 600;
    text-decoration: none;
}

:focus-visible {
    outline: 2px solid var(--sl-primary);
    outline-offset: 2px;
}

/* ── Páginas de auth (login, setup, reset) ── */
.auth-page {
    background: var(--sl-bg-dark);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.25rem;
    background-image: url('../img/login_bg.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    position: relative;
}

.auth-page::before {
    content: '';
    position: absolute;
    inset: 0;
    background: color-mix(in srgb, var(--sl-bg-dark) 70%, transparent);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.auth-card {
    background: var(--sl-bg-white);
    border-radius: var(--sl-radius-lg);
    padding: 2rem;
    width: 100%;
    max-width: 25rem;
    box-shadow: var(--sl-shadow-lg);
    position: relative;
    z-index: 1;
}

.auth-card-wide {
    max-width: 30rem;
}

.auth-logo {
    text-align: center;
    margin-bottom: 2rem;
}

.auth-logo i {
    font-size: 2.5rem;
    color: var(--sl-primary);
}

.auth-logo h1 {
    font-size: 1.125rem;
    color: var(--sl-text);
    margin-top: 0.5rem;
}

.auth-logo p {
    font-size: 0.75rem;
    color: var(--sl-text-muted);
    margin-top: 0.25rem;
}

/* ── Auth sections (fieldset) ── */
.auth-section {
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border: none;
    border-bottom: 1px solid var(--sl-border-light);
}

.auth-section-last {
    border-bottom: none;
    margin-bottom: 1rem;
}

.auth-section-legend {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--sl-text);
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    width: 100%;
    padding: 0;
}

.auth-section-legend i {
    color: var(--sl-primary);
}

/* ── Auth footer ── */
.auth-footer {
    text-align: center;
    margin-top: 1rem;
}

.auth-footer a {
    font-size: 0.75rem;
    color: var(--sl-text-muted);
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.auth-footer a:hover {
    color: var(--sl-primary);
}

/* ── Formularios ── */
.form-group {
    margin-bottom: var(--sl-space-4);
}

.form-group label,
.form-label {
    display: block;
    font-size: var(--sl-text-base);
    font-weight: var(--sl-weight-semibold);
    color: var(--sl-text);
    margin-bottom: var(--sl-space-2);
}

.form-input {
    width: 100%;
    padding: var(--sl-space-3);
    border: var(--sl-border-width) solid var(--sl-border-light);
    border-radius: var(--sl-radius);
    font-size: var(--sl-text-base);
    font-family: var(--sl-font);
    color: var(--sl-text);
    background: var(--sl-bg-white);
    transition: border-color var(--sl-transition-fast), box-shadow var(--sl-transition-fast);
}

.form-input:focus {
    outline: none;
    border-color: var(--sl-primary);
    box-shadow: 0 0 0 var(--sl-border-width-thick) color-mix(in srgb, var(--sl-primary) 15%, transparent);
}

.form-input-sm {
    padding: var(--sl-space-2) var(--sl-space-3);
    font-size: var(--sl-text-sm);
}

.form-hint {
    font-size: var(--sl-text-sm);
    color: var(--sl-text-muted);
    margin-top: 0.25rem;
}

/* Mobile First: form-row apila en mobile, 2 cols desde sm */
.form-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.75rem;
}

.form-actions {
    display: flex;
    gap: var(--sl-space-2);
    margin-top: var(--sl-space-4);
}

/* ── Botones ── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--sl-space-2);
    padding: var(--sl-space-3) var(--sl-space-4);
    border: none;
    border-radius: var(--sl-radius);
    font-size: var(--sl-text-base);
    font-weight: var(--sl-weight-semibold);
    font-family: var(--sl-font);
    cursor: pointer;
    text-decoration: none;
    transition: background var(--sl-transition-fast), opacity var(--sl-transition-fast);
}

.btn-sm {
    padding: var(--sl-space-2) var(--sl-space-3);
    font-size: var(--sl-text-sm);
}

a.btn:hover {
    text-decoration: none;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--sl-primary);
    color: var(--sl-white);
}

.btn-primary:hover {
    color: var(--sl-white);
}

.btn-primary:hover:not(:disabled) {
    background: var(--sl-primary-hover);
}

.btn-block {
    width: 100%;
}

.btn-secondary {
    background: var(--sl-border-light);
    color: var(--sl-text);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--sl-border);
}

.btn-danger {
    background: var(--sl-danger);
    color: #FFFFFF;
}

.btn-danger:hover:not(:disabled) {
    background: #B71C1C;
}

/* ── Mensajes flash / alertas ── */
.alert {
    padding: var(--sl-space-3) var(--sl-space-4);
    border-radius: var(--sl-radius);
    font-size: var(--sl-text-sm);
    margin-bottom: var(--sl-space-4);
    display: flex;
    align-items: center;
    gap: var(--sl-space-2);
}

.alert-error {
    background: var(--sl-danger-bg);
    color: var(--sl-danger);
}

.alert-success {
    background: var(--sl-success-bg);
    color: var(--sl-success);
}

.alert-warning {
    background: var(--sl-warning-bg);
    color: var(--sl-warning);
}

/* ── Badges ── */
.badge {
    font-size: var(--sl-text-xs);
    font-weight: var(--sl-weight-bold);
    padding: var(--sl-space-1) var(--sl-space-2);
    border-radius: var(--sl-radius-full);
}

.badge-required {
    background: var(--sl-danger);
    color: #FFFFFF;
}

.badge-optional {
    background: var(--sl-border-light);
    color: var(--sl-text-muted);
}

/* ── Checkbox label ── */
.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    cursor: pointer;
    font-size: 0.8125rem;
    color: var(--sl-text);
}

.checkbox-label input[type="checkbox"] {
    width: 1rem;
    height: 1rem;
    flex-shrink: 0;
    accent-color: var(--sl-primary);
}

/* ── Select styling ── */
select.form-input {
    appearance: auto;
}

/* ── Dashboard placeholder ── */
.dashboard-placeholder {
    max-width: 40rem;
    margin: 2rem auto;
    padding: 0 1.5rem;
}

.dashboard-placeholder-header {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
    padding-bottom: 1.25rem;
    border-bottom: 1px solid var(--sl-border-light);
}

.dashboard-placeholder-welcome h1 {
    font-size: 1.375rem;
    color: var(--sl-text);
    display: flex;
    align-items: center;
    gap: 0.625rem;
}

.dashboard-placeholder-welcome p {
    font-size: 0.8125rem;
    color: var(--sl-text-muted);
    margin-top: 0.25rem;
}

.dashboard-placeholder-user {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.user-badge {
    font-size: 0.625rem;
    font-weight: 700;
    padding: 0.1875rem 0.5rem;
    border-radius: 0.625rem;
    text-transform: uppercase;
}

.user-badge-admin  { background: color-mix(in srgb, var(--sl-primary) 10%, transparent); color: var(--sl-primary); }
.user-badge-editor { background: color-mix(in srgb, var(--sl-warning) 10%, transparent); color: var(--sl-warning); }
.user-badge-guest  { background: color-mix(in srgb, var(--sl-text-muted) 10%, transparent); color: var(--sl-text-muted); }

.user-name {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--sl-text);
}

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

.dashboard-placeholder-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
    margin-top: 1.5rem;
}

/* ── Páginas de error ── */
.error-page {
    background: var(--sl-bg);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.error-container {
    text-align: center;
}

.error-card {
    padding: 2.5rem;
}

.error-code {
    font-size: clamp(4rem, 10vw, 6rem);
    font-weight: 700;
    color: var(--sl-border);
    line-height: 1;
}

.error-card h1 {
    font-size: 1.5rem;
    color: var(--sl-text);
    margin: 1rem 0 0.5rem;
}

.error-card p {
    color: var(--sl-text-muted);
    margin-bottom: 1.5rem;
}

.error-link {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    color: var(--sl-primary);
    font-weight: 600;
}

/* ── Welcome page ── */
.welcome-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.welcome-card {
    text-align: center;
    padding: 2.5rem;
}

.welcome-logo i {
    font-size: 4rem;
    color: var(--sl-primary);
}

.welcome-card h1 {
    font-size: 1.75rem;
    color: var(--sl-text);
    margin: 1rem 0 0.5rem;
}

.welcome-card p {
    color: var(--sl-text-muted);
}

.welcome-version {
    font-size: 0.75rem;
    color: var(--sl-border);
    margin-top: 1rem;
}

/* ── Utilidades ── */
.hidden,
[hidden] {
    display: none !important;
}

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

.text-muted {
    color: var(--sl-text-muted);
}

.text-danger {
    color: var(--sl-danger);
}

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }

/* ── Toast notifications (global) ── */
.sl-toast-container {
    position: fixed;
    bottom: var(--sl-space-12);
    left: 50%;
    transform: translateX(-50%);
    z-index: 2000;
    display: flex;
    flex-direction: column-reverse;
    align-items: center;
    gap: var(--sl-space-2);
    pointer-events: none;
}

.sl-toast {
    padding: var(--sl-space-3) var(--sl-space-5);
    border-radius: var(--sl-radius-full);
    font-size: var(--sl-text-base);
    font-weight: var(--sl-weight-semibold);
    box-shadow: var(--sl-shadow);
    pointer-events: auto;
    animation: toastUp 0.35s ease;
    max-width: min(24rem, 90vw);
    display: flex;
    align-items: center;
    gap: var(--sl-space-2);
    white-space: nowrap;
}

.sl-toast-success { background: var(--sl-success); color: var(--sl-white); }
.sl-toast-error   { background: var(--sl-danger); color: var(--sl-white); }

@keyframes toastUp {
    from { opacity: 0; transform: translateY(1rem); }
    to   { opacity: 1; transform: translateY(0); }
}

@keyframes toastOut {
    from { opacity: 1; transform: translateY(0); }
    to   { opacity: 0; transform: translateY(1rem); }
}

/* ══════════════════════════════════════════════
   MEDIA QUERIES CONSOLIDADOS
   ══════════════════════════════════════════════ */

@media (min-width: 576px) {
    .auth-card {
        padding: 2.5rem;
    }

    .form-row {
        grid-template-columns: 1fr 1fr;
    }

    .dashboard-placeholder-header {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
    }
}