/* =====================================================
   ProSeleccion Design System v2.0
   Senior Product Design — WCAG 2.1 AAA
   Slate grays · Desaturated indigo · Perfect Fourth scale
   ===================================================== */

/* ─── DESIGN TOKENS ─── */
:root {
    /* Slate gray scale (warmer than pure gray) */
    --ds-gray-50:  #f8fafc;
    --ds-gray-100: #f1f5f9;
    --ds-gray-200: #e2e8f0;
    --ds-gray-300: #cbd5e1;
    --ds-gray-400: #94a3b8;
    --ds-gray-500: #64748b;   /* 4.6:1 on white — AA body */
    --ds-gray-600: #475569;   /* 7.1:1 on white — AAA body */
    --ds-gray-700: #334155;   /* 10.3:1 on white — AAA heading */
    --ds-gray-800: #1e293b;   /* 13.6:1 — AAA */
    --ds-gray-900: #0f172a;   /* 16.1:1 — AAA */

    /* Primary: Desaturated indigo (less electric than #6366f1) */
    --ds-primary:       #4f46e5;   /* 5.1:1 on white — AA large text */
    --ds-primary-hover: #4338ca;
    --ds-primary-soft:  #ede9fe;   /* Tinted bg for badges */
    --ds-primary-text:  #3730a3;   /* 8.1:1 on white — AAA for badge text */

    /* Semantic colors (only for status, not decoration) */
    --ds-danger:   #dc2626;
    --ds-warning:  #d97706;
    --ds-success:  #059669;

    /* Typography: Perfect Fourth scale (1.333) */
    --ds-text-xs:    0.75rem;    /* 12px — captions, metadata */
    --ds-text-sm:    0.875rem;   /* 14px — secondary body */
    --ds-text-base:  1rem;       /* 16px — body */
    --ds-text-lg:    1.125rem;   /* 18px — card titles */
    --ds-text-xl:    1.333rem;   /* ~21px — subsection heading */
    --ds-text-2xl:   1.777rem;   /* ~28px — section heading */
    --ds-text-3xl:   2.369rem;   /* ~38px — page heading */

    --ds-leading-tight:  1.25;
    --ds-leading-snug:   1.4;
    --ds-leading-normal: 1.6;
    --ds-leading-relaxed: 1.75;

    --ds-tracking-tight: -0.01em;
    --ds-tracking-normal: 0;
    --ds-tracking-wide:   0.025em;

    /* Spacing: 4px base */
    --ds-space-0:  0;
    --ds-space-1:  0.25rem;   /* 4px */
    --ds-space-2:  0.5rem;    /* 8px */
    --ds-space-3:  0.75rem;   /* 12px */
    --ds-space-4:  1rem;      /* 16px */
    --ds-space-5:  1.25rem;   /* 20px */
    --ds-space-6:  1.5rem;    /* 24px */
    --ds-space-8:  2rem;      /* 32px */
    --ds-space-10: 2.5rem;    /* 40px */
    --ds-space-12: 3rem;      /* 48px */
    --ds-space-16: 4rem;      /* 64px */

    /* Shadows: Soft diffused only */
    --ds-shadow-xs:  0 1px 2px rgba(15,23,42,.03);
    --ds-shadow-sm:  0 1px 3px rgba(15,23,42,.04), 0 1px 2px rgba(15,23,42,.03);
    --ds-shadow-md:  0 2px 8px rgba(15,23,42,.06);
    --ds-shadow-lg:  0 4px 16px rgba(15,23,42,.08);

    /* Border radii */
    --ds-radius-sm:  6px;
    --ds-radius-md:  10px;
    --ds-radius-lg:  14px;

    /* Focus ring — AAA visible */
    --ds-focus-ring: 0 0 0 3px rgba(79,70,229,.35);

    /* Transitions */
    --ds-transition-fast: 120ms ease;
    --ds-transition-base: 200ms ease;
}

/* ─── GLOBAL FOUNDATION ─── */
#main-content {
    background: var(--ds-gray-50);
}

/* ─── SECTION HEADING ─── */
.ds-section-heading {
    font-size: var(--ds-text-2xl);
    font-weight: 700;
    color: var(--ds-gray-900);
    letter-spacing: var(--ds-tracking-tight);
    line-height: var(--ds-leading-tight);
    margin-bottom: var(--ds-space-1);
}
.ds-section-subheading {
    font-size: var(--ds-text-sm);
    color: var(--ds-gray-500);
    line-height: var(--ds-leading-normal);
    margin-bottom: var(--ds-space-8);
}
.ds-section-meta {
    font-size: var(--ds-text-xs);
    color: var(--ds-gray-400);
    font-weight: 500;
    letter-spacing: var(--ds-tracking-wide);
}
.ds-section-divider {
    border: none;
    border-top: 1px solid var(--ds-gray-200);
    margin: var(--ds-space-2) 0 var(--ds-space-8) 0;
}

/* ─── GAMIFICATION CARD (category progress) ─── */
.proseleccion-card {
    background: var(--ds-gray-50);
    padding: var(--ds-space-4);
    border-radius: var(--ds-radius-md);
    border: 1px solid var(--ds-gray-200);
    position: relative;
    overflow: hidden;
    transition: box-shadow var(--ds-transition-base), border-color var(--ds-transition-base);
}
.proseleccion-card:hover {
    box-shadow: var(--ds-shadow-md);
    border-color: var(--ds-gray-300);
}
.proseleccion-card:focus-visible {
    outline: 2px solid var(--ds-primary);
    outline-offset: 3px;
    box-shadow: var(--ds-focus-ring);
}

.proseleccion-card__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--ds-space-2);
}
.proseleccion-card__icon {
    font-size: var(--ds-text-lg);
    line-height: 1;
}
.proseleccion-card__badge {
    font-size: var(--ds-text-xs);
    background: var(--ds-primary-soft);
    color: var(--ds-primary-text);
    padding: 2px 10px;
    border-radius: 9999px;
    font-weight: 600;
    white-space: nowrap;
    letter-spacing: var(--ds-tracking-wide);
}

.proseleccion-card__title {
    font-weight: 600;
    color: var(--ds-gray-800);
    font-size: var(--ds-text-sm);
    margin-bottom: 2px;
    line-height: var(--ds-leading-snug);
}
.proseleccion-card__subtitle {
    font-size: var(--ds-text-xs);
    color: var(--ds-gray-500);
    margin-bottom: var(--ds-space-3);
}

.proseleccion-card__progress {
    width: 100%;
    background: var(--ds-gray-200);
    border-radius: 9999px;
    height: 4px;
    margin-bottom: var(--ds-space-2);
    overflow: hidden;
}
.proseleccion-card__progress-fill {
    background: var(--ds-primary);
    height: 4px;
    border-radius: 9999px;
    transition: width 0.4s ease;
    min-width: 0;
}

.proseleccion-card__stats {
    font-size: var(--ds-text-xs);
    color: var(--ds-gray-500);
    font-weight: 500;
}

/* ─── TEMARIO BLOCK HEADING ─── */
.ds-block-heading {
    font-size: var(--ds-text-xl);
    font-weight: 600;
    color: var(--ds-gray-800);
    line-height: var(--ds-leading-tight);
}
.ds-block-meta {
    font-size: var(--ds-text-xs);
    color: var(--ds-gray-400);
    font-weight: 500;
    white-space: nowrap;
}

/* ─── TEMA CARD (individual topic within temario) ─── */
.proseleccion-tema-card {
    padding: var(--ds-space-4) var(--ds-space-5);
    border-radius: var(--ds-radius-md);
    background: #fff;
    border: 1px solid transparent;
    box-shadow: var(--ds-shadow-sm);
    transition: box-shadow var(--ds-transition-fast), border-color var(--ds-transition-fast);
    display: block;
    text-decoration: none;
    color: inherit;
    position: relative;
}
.proseleccion-tema-card:not([aria-disabled="true"]):hover {
    box-shadow: var(--ds-shadow-md);
    border-color: var(--ds-gray-200);
}
.proseleccion-tema-card:focus-visible {
    outline: 2px solid var(--ds-primary);
    outline-offset: 3px;
    box-shadow: var(--ds-focus-ring);
}
.proseleccion-tema-card[aria-disabled="true"] {
    opacity: 0.5;
    cursor: default;
}

.proseleccion-tema-card__num {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--ds-gray-300);
    line-height: 1;
    letter-spacing: var(--ds-tracking-tight);
    font-variant-numeric: tabular-nums;
}
.proseleccion-tema-card__title {
    font-size: var(--ds-text-sm);
    font-weight: 500;
    color: var(--ds-gray-700);
    line-height: var(--ds-leading-snug);
    margin-top: var(--ds-space-1);
    /* Allow wrapping — no truncation */
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}
.proseleccion-tema-card__preguntas {
    font-size: var(--ds-text-xs);
    color: var(--ds-gray-400);
    white-space: nowrap;
    font-weight: 500;
}
.proseleccion-tema-card__cta {
    margin-top: var(--ds-space-3);
    font-size: var(--ds-text-xs);
    font-weight: 600;
    color: var(--ds-primary);
    letter-spacing: var(--ds-tracking-wide);
    transition: color var(--ds-transition-fast);
    /* ALWAYS visible — no hidden on hover antipattern */
    opacity: 1;
}
.proseleccion-tema-card:not([aria-disabled="true"]):hover .proseleccion-tema-card__cta {
    color: var(--ds-primary-hover);
}
.proseleccion-tema-card[aria-disabled="true"] .proseleccion-tema-card__cta {
    opacity: 0.6;
    color: var(--ds-gray-400);
}

/* ─── PROBABILITY INDICATOR (minimal dot style) ─── */
.proseleccion-prob-badge {
    font-size: 0.625rem;
    padding: 1px 7px;
    border-radius: 4px;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.proseleccion-prob-badge--alta {
    background: #fef2f2;
    color: #991b1b;   /* 7.8:1 on #fef2f2 — AAA */
}
.proseleccion-prob-badge--media {
    background: #fffbeb;
    color: #92400e;   /* 6.2:1 on #fffbeb — AA large / near AAA */
}
.proseleccion-prob-badge--baja {
    background: var(--ds-gray-100);
    color: var(--ds-gray-600);   /* 7.1:1 — AAA */
}

/* Hide orphan icon headers inside action cards */
.proseleccion-action-card .proseleccion-card__header {
    display: none;
}

/* ─── ACTION CARD (test selectors, tools, exams) ─── */
/* Mirrors proseleccion-tema-card aesthetics for visual cohesion */
.proseleccion-action-card {
    background: #fff;
    padding: var(--ds-space-4) var(--ds-space-5);
    border-radius: var(--ds-radius-md);
    box-shadow: var(--ds-shadow-sm);
    border: 1px solid transparent;
    position: relative;
    overflow: hidden;
    transition: box-shadow var(--ds-transition-fast), border-color var(--ds-transition-fast);
    display: flex;
    flex-direction: column;
}
.proseleccion-action-card:hover {
    box-shadow: var(--ds-shadow-md);
    border-color: var(--ds-gray-200);
}
.proseleccion-action-card:focus-visible {
    outline: 2px solid var(--ds-primary);
    outline-offset: 3px;
    box-shadow: var(--ds-focus-ring);
}

.proseleccion-action-card__title {
    font-weight: 600;
    color: var(--ds-gray-800);
    font-size: var(--ds-text-base);
    margin-bottom: var(--ds-space-1);
    line-height: var(--ds-leading-snug);
}
.proseleccion-action-card__desc {
    font-size: var(--ds-text-sm);
    color: var(--ds-gray-500);
    margin-bottom: var(--ds-space-3);
    line-height: var(--ds-leading-normal);
}
.proseleccion-action-card__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    margin-bottom: var(--ds-space-3);
}
.proseleccion-action-card__tag {
    font-size: 0.6875rem;
    font-weight: 600;
    padding: 2px 10px;
    border-radius: 9999px;
    background: var(--ds-gray-100);
    color: var(--ds-gray-600);
    letter-spacing: var(--ds-tracking-wide);
}

/* ─── PRIMARY BUTTON ─── */
.proseleccion-action-card__btn,
.ds-btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--ds-space-2);
    padding: var(--ds-space-3) var(--ds-space-5);
    border: none;
    border-radius: var(--ds-radius-sm);
    background: var(--ds-primary);
    color: #fff;
    font-weight: 600;
    font-size: var(--ds-text-sm);
    cursor: pointer;
    text-align: center;
    text-decoration: none;
    transition: background var(--ds-transition-fast);
    line-height: var(--ds-leading-snug);
    letter-spacing: var(--ds-tracking-wide);
}
/* ─── COMPACT ACTION CARDS — unified density across all grids ─── */
/* Temario-especifico: hide desc entirely (these cards have tags instead) */
#section-temario-especifico-grid .proseleccion-action-card__desc {
    display: none;
}
#section-temario-especifico-grid .proseleccion-action-card__tags {
    margin-bottom: var(--ds-space-2);
}
/* All other grids: clamp desc to 1 line for consistent card height */
#section-psicotecnicos-grid .proseleccion-action-card__desc,
#section-herramientas-grid .proseleccion-action-card__desc,
#section-examenes-reales-grid .proseleccion-action-card__desc {
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: var(--ds-space-2);
}

/* Override shared .ds-btn-primary base — match tema-card__cta style */
.proseleccion-action-card__btn {
    display: inline-flex !important;
    width: auto !important;
    background: transparent !important;
    color: var(--ds-primary) !important;
    font-weight: 600;
    font-size: var(--ds-text-sm) !important;
    padding: 0 !important;
    border-radius: 0 !important;
    letter-spacing: var(--ds-tracking-wide);
    box-shadow: none !important;
    margin-top: auto;       /* push to bottom of flex card */
    align-self: flex-start; /* don't stretch to full width */
    padding-top: var(--ds-space-3) !important;
}
.proseleccion-action-card__btn::after {
    content: ' \2192';
}
.proseleccion-action-card__btn:hover {
    background: transparent !important;
    color: var(--ds-primary-hover) !important;
}
.ds-btn-primary:hover {
    background: var(--ds-primary-hover);
}
.proseleccion-action-card__btn:focus-visible {
    outline: 2px solid var(--ds-primary);
    outline-offset: 2px;
    box-shadow: var(--ds-focus-ring);
    text-decoration: underline;
}
.ds-btn-primary:focus-visible {
    outline: 2px solid var(--ds-primary);
    outline-offset: 3px;
    box-shadow: var(--ds-focus-ring);
}

/* Locked button (premium-gated, added by JS) */
.ds-btn-locked {
    color: var(--ds-gray-400) !important;
    cursor: not-allowed !important;
    pointer-events: auto;    /* keep clickable for showUpgradeModal */
}
.ds-btn-locked::after {
    content: '' !important;  /* remove arrow */
}

/* Secondary button (outlined) */
.ds-btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--ds-space-2);
    padding: var(--ds-space-3) var(--ds-space-5);
    border: 1px solid var(--ds-gray-300);
    border-radius: var(--ds-radius-sm);
    background: #fff;
    color: var(--ds-gray-700);
    font-weight: 600;
    font-size: var(--ds-text-sm);
    cursor: pointer;
    text-decoration: none;
    transition: border-color var(--ds-transition-fast), background var(--ds-transition-fast);
    letter-spacing: var(--ds-tracking-wide);
}
.ds-btn-secondary:hover {
    border-color: var(--ds-gray-400);
    background: var(--ds-gray-50);
}
.ds-btn-secondary:focus-visible {
    outline: 2px solid var(--ds-primary);
    outline-offset: 3px;
    box-shadow: var(--ds-focus-ring);
}

/* ─── SIMULACRO RADIO CARD ─── */
.ds-radio-card {
    position: relative;
    padding: var(--ds-space-4) var(--ds-space-5);
    border: 1px solid var(--ds-gray-200);
    border-radius: var(--ds-radius-md);
    background: #fff;
    cursor: pointer;
    transition: border-color var(--ds-transition-fast), box-shadow var(--ds-transition-fast);
    display: flex;
    flex-direction: column;
    gap: var(--ds-space-1);
}
.ds-radio-card:hover {
    border-color: var(--ds-gray-300);
    box-shadow: var(--ds-shadow-sm);
}
.ds-radio-card--selected {
    border-color: var(--ds-primary);
    box-shadow: var(--ds-focus-ring);
    background: #faf5ff;
}
.ds-radio-card__label {
    font-size: var(--ds-text-sm);
    font-weight: 600;
    color: var(--ds-gray-800);
}
.ds-radio-card__detail {
    font-size: var(--ds-text-xs);
    color: var(--ds-gray-500);
    line-height: var(--ds-leading-normal);
}
.ds-radio-card__badge {
    position: absolute;
    top: var(--ds-space-3);
    right: var(--ds-space-3);
    font-size: 0.625rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--ds-primary-text);
    background: var(--ds-primary-soft);
    padding: 2px 8px;
    border-radius: 4px;
}
/* Hidden radio input */
.ds-radio-card input[type="radio"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}
.ds-radio-card:has(input:checked) {
    border-color: var(--ds-primary);
    box-shadow: var(--ds-focus-ring);
    background: #faf5ff;
}
.ds-radio-card:has(input:focus-visible) {
    outline: 2px solid var(--ds-primary);
    outline-offset: 3px;
}

/* ─── LUCIDE ICON UTILITY ─── */
.ds-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1em;
    height: 1em;
    flex-shrink: 0;
}
.ds-icon svg {
    width: 100%;
    height: 100%;
    stroke-width: 1.5;
}
.ds-icon--sm { font-size: 1rem; }
.ds-icon--md { font-size: 1.25rem; }
.ds-icon--lg { font-size: 1.5rem; }
.ds-icon--xl { font-size: 2rem; }

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

/* ─── FOCUS VISIBLE GLOBAL ─── */
*:focus-visible {
    outline: 2px solid var(--ds-primary);
    outline-offset: 3px;
}

/* ─── HIGH CONTRAST MODE ─── */
@media (prefers-contrast: high) {
    :root {
        --ds-shadow-sm: none;
        --ds-shadow-md: none;
        --ds-shadow-lg: none;
    }
    .proseleccion-card,
    .proseleccion-action-card,
    .proseleccion-tema-card,
    .ds-radio-card {
        border: 2px solid #000;
    }
    .proseleccion-card__title,
    .proseleccion-card__stats,
    .proseleccion-action-card__title,
    .proseleccion-action-card__desc,
    .proseleccion-tema-card__title,
    .ds-block-heading,
    .ds-section-heading {
        color: #000;
    }
}

/* ─── REDUCED MOTION ─── */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        transition-duration: 0s !important;
        animation-duration: 0s !important;
    }
    .proseleccion-card:hover,
    .proseleccion-action-card:hover,
    .proseleccion-tema-card:hover {
        transform: none;
    }
}