/*
 * ============================================================
 *  PromedioPro — Modo Claro / Modo Oscuro
 *  blanco-negro.css
 * ============================================================
 *
 *  Este archivo gestiona el cambio completo de tema:
 *    • Por defecto: tema oscuro (tokens de style.css)
 *    • [data-theme="light"] en <html>: paleta Sky Blue
 *
 *  Cargado DESPUÉS de style.css y guia.css.
 *  El botón de alternancia lo gestiona blanco-negro.js
 * ============================================================
 */

/* ══════════════════════════════════════════════════════════
   1. BOTÓN DE ALTERNANCIA · THEME TOGGLE BUTTON
   ══════════════════════════════════════════════════════════ */

.theme-toggle-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 999px;           /* píldora */
    padding: 0.42rem 0.9rem;
    cursor: pointer;
    transition: background 0.3s ease, border-color 0.3s ease,
                color 0.3s ease, box-shadow 0.3s ease;
    font-size: 0.82rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.75);
    white-space: nowrap;
    line-height: 1;
    flex-shrink: 0;
}

.theme-toggle-btn:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
    color: #ffffff;
    box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.18);
}

/* Iconos SVG dentro del botón */
.theme-toggle-btn .icon-sun,
.theme-toggle-btn .icon-moon {
    width: 15px;
    height: 15px;
    flex-shrink: 0;
    transition: opacity 0.25s ease, transform 0.35s ease;
}

/* Oscuro → mostrar icono "☀" (para pasar a claro) */
.theme-toggle-btn .icon-sun  { display: block; }
.theme-toggle-btn .icon-moon { display: none;  }

/* ══════════════════════════════════════════════════════════
   2. MODO CLARO — [data-theme="light"]
   ══════════════════════════════════════════════════════════ */

[data-theme="light"] {

    /* ── Tokens base ────────────────────────────────────── */
    --primary:              #0EA5E9;
    --primary-active:       #0284C7;
    --secondary:            #345e75;
    --accent:               #EF4444;

    --bg-dark:              #F0F9FF;          /* fondo de página (inicio gradiente) */
    --bg-dark-end:          #E8F4FD;          /* fondo de página (fin gradiente)    */

    --card-bg:              rgba(255, 255, 255, 0.85);
    --glass-border:         rgba(186, 230, 253, 0.8);

    --text-main:            #0C4A6E;
    --text-dim:             #0369A1;

    --input-bg:             rgba(240, 249, 255, 0.9);
    --input-border:         #BAE6FD;
    --input-border-focus:   #38BDF8;
    --input-placeholder:    #94C3DD;

    --result-grad-start:    #0EA5E9;
    --result-grad-end:      #0284C7;

    --header-bg:            rgba(255, 255, 255, 0.70);
    --header-border:        rgba(186, 230, 253, 0.7);
    --header-nav-link:      #0369A1;
    --header-nav-hover:     #0EA5E9;

    --gradient:             linear-gradient(135deg, #0EA5E9, #0284C7);
}

/* ── Fondo de página ──────────────────────────────────────── */
[data-theme="light"] body {
    background: #E8F4FD;
    color: var(--text-main);
}

/* ── Header ────────────────────────────────────────────────── */
[data-theme="light"] header {
    background: var(--header-bg);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom-color: var(--header-border);
}

@media (max-width: 768px) {
    [data-theme="light"] header {
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        background: rgba(255, 255, 255, 0.95);
    }
}

/* ── Logo ──────────────────────────────────────────────────── */
[data-theme="light"] .logo-text {
    color: var(--text-main);
}

[data-theme="light"] header .logo-text span {
    color: var(--primary);
}

/* ── Nav links ─────────────────────────────────────────────── */
[data-theme="light"] .nav-links a {
    color: var(--header-nav-link);
}

[data-theme="light"] .nav-links a:hover {
    color: var(--header-nav-hover);
}

/* Menú móvil */
@media (max-width: 768px) {
    [data-theme="light"] .nav-links {
        background: rgba(255, 255, 255, 0.98);
        border-color: var(--header-border);
    }
    
    [data-theme="light"] .nav-links a:hover,
    [data-theme="light"] .nav-links a.active {
        background: rgba(14, 165, 233, 0.08);
        color: var(--primary);
        border-color: rgba(14, 165, 233, 0.15);
    }
}

/* Hover y activo de links en desktop (solo color, sin fondo) */
@media (min-width: 769px) {
    [data-theme="light"] .nav-links a:hover,
    [data-theme="light"] .nav-links a.active {
        background: transparent;
        color: var(--header-nav-hover);
        border: none;
    }
}

/* Hamburger lines */
[data-theme="light"] .hamburger span {
    background: var(--text-main);
}

[data-theme="light"] .hamburger.active span:nth-child(1),
[data-theme="light"] .hamburger.active span:nth-child(3) {
    background: var(--primary);
}

/* ── Hero ──────────────────────────────────────────────────── */
[data-theme="light"] .hero h1,
[data-theme="light"] .section-title {
    background: linear-gradient(135deg, #2395ce, #26b3fa);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

[data-theme="light"] .hero p {
    color: var(--text-dim);
}

[data-theme="light"] .circle-2 {
    background: rgba(14, 165, 233, 0.18);
}

/* ── Glass Card ────────────────────────────────────────────── */
[data-theme="light"] .glass-card {
    background: var(--card-bg);
    border-color: var(--glass-border);
    box-shadow: 0 8px 32px rgba(14, 165, 233, 0.10),
                0 2px 8px rgba(12, 74, 110, 0.06);
}

@media (max-width: 768px) {
    [data-theme="light"] .glass-card {
        background: rgba(255, 255, 255, 0.97);
    }
}

/* ── Selectores de escala y modo ───────────────────────────── */
[data-theme="light"] .mode-selector,
[data-theme="light"] .scale-selector {
    background: rgba(219, 225, 228, 0.35);
}

[data-theme="light"] .mode-selector button,
[data-theme="light"] .scale-selector button {
    color: var(--text-dim);
}

[data-theme="light"] .mode-selector button.active,
[data-theme="light"] .scale-selector button.active {
    background: var(--primary);
    color: #ffffff;
}

/* ── Textos de la tarjeta ──────────────────────────────────── */
[data-theme="light"] .scale-info {
    color: var(--text-main);
}

[data-theme="light"] .scale-info span {
    color: var(--primary);
}

[data-theme="light"] .threshold-field label {
    color: var(--text-dim);
}

/* ── Grade rows ─────────────────────────────────────────────── */
[data-theme="light"] .grade-row {
    background: rgb(244, 246, 248);
}

[data-theme="light"] .grade-row:hover {
    background: rgba(190, 212, 224, 0.3);
}

/* ── Inputs ─────────────────────────────────────────────────── */
[data-theme="light"] input {
   background: #ffffff;
    border-color: var(--input-border);
    color: var(--text-main);
}

[data-theme="light"] input::placeholder {
    color: var(--input-placeholder);
}

[data-theme="light"] input:focus {
    border-color: var(--input-border-focus);
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.22);
}

[data-theme="light"] input.input-error {
    border-color: var(--accent);
    color: var(--accent);
}

/* ── Botón eliminar fila ────────────────────────────────────── */
[data-theme="light"] .btn-remove {
    background: rgba(239, 68, 68, 0.08);
    color: var(--accent);
    border-color: rgba(239, 68, 68, 0.2);
}

[data-theme="light"] .btn-remove:hover {
    background: var(--accent);
    color: #ffffff;
}

/* ── Botones de acción (agregar / reiniciar) ────────────────── */
[data-theme="light"] .btn-secondary {
    border-color: var(--input-border);
    color: var(--text-dim);
}

[data-theme="light"] .btn-secondary:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(14, 165, 233, 0.06);
}

[data-theme="light"] .btn-outline {
    border-color: var(--glass-border);
    color: var(--text-dim);
}

[data-theme="light"] .btn-outline:hover {
    background: rgba(14, 165, 233, 0.06);
    border-color: var(--primary);
    color: var(--primary);
}

/* ── Result box (caja de resultado con gradiente) ───────────── */
[data-theme="light"] .result-container {
    border-top-color: var(--glass-border);
}

[data-theme="light"] .result-label {
    color: var(--text-dim);
}

[data-theme="light"] .result-value {
    color: var(--primary);
    text-shadow: 0 0 20px rgba(14, 165, 233, 0.25);
}

/* ── Status badge ───────────────────────────────────────────── */
[data-theme="light"] .status-badge {
    background: rgba(14, 165, 233, 0.08);
    color: var(--text-dim);
}

[data-theme="light"] .status-badge.pass {
    background: rgba(34, 197, 94, 0.1);
    color: #16a34a;
}

[data-theme="light"] .status-badge.fail {
    background: rgba(239, 68, 68, 0.1);
    color: #dc2626;
}

/* ── Share buttons ──────────────────────────────────────────── */
[data-theme="light"] .btn-share.outline {
    background: rgba(240, 249, 255, 0.9);
    border-color: var(--glass-border);
    color: var(--text-main);
}

[data-theme="light"] .btn-share.outline img {
    filter: brightness(0) saturate(100%) invert(48%) sepia(90%) saturate(2400%) hue-rotate(170deg) !important;
}

[data-theme="light"] .btn-share:hover:not(:disabled) {
    box-shadow: 0 8px 20px rgba(14, 165, 233, 0.18);
}

/* ── Share guide toggle ─────────────────────────────────────── */
[data-theme="light"] .btn-guide-toggle {
    border-color: var(--glass-border);
    color: var(--text-dim);
}

[data-theme="light"] .btn-guide-toggle:hover {
    background: rgba(186, 230, 253, 0.2);
}

[data-theme="light"] .btn-guide-toggle.active {
    border-color: rgba(14, 165, 233, 0.4);
    color: var(--primary);
}

/* ── Share guide cards ──────────────────────────────────────── */
[data-theme="light"] .share-guide-card {
    background: rgba(240, 249, 255, 0.7);
    border-color: var(--glass-border);
}

[data-theme="light"] .share-guide-card:hover {
    background: rgba(186, 230, 253, 0.25);
}

[data-theme="light"] .share-guide-text h4 {
    color: #0C4A6E;
}

[data-theme="light"] .share-guide-text p {
    color: var(--text-dim);
}

[data-theme="light"] .share-guide-icon {
    background: rgba(14, 165, 233, 0.15) !important;
    border-radius: 10px;
}

/* Forzar que los iconos sean visibles en modo claro */
/* Si los iconos originales son blancos, brightness(0) los volverá negros/oscuros */
[data-theme="light"] .share-guide-icon img {
    filter: brightness(0.2) !important; 
    opacity: 1 !important;
}

/* ── Info cards (cómo usar / pasos) ─────────────────────────── */
[data-theme="light"] .info-card {
    background: rgba(255, 255, 255, 0.75);
    border-color: var(--glass-border);
}

[data-theme="light"] .info-card h3 {
    color: var(--primary);
}

[data-theme="light"] .info-card p {
    color: var(--text-dim);
}

/* ── FAQ ─────────────────────────────────────────────────────── */
[data-theme="light"] .faq-item {
    background: rgba(255, 255, 255, 0.8);
    border-color: var(--glass-border);
}

[data-theme="light"] .faq-question {
    color: #146a9c;
}

[data-theme="light"] .faq-question:hover {
    background: rgba(186, 230, 253, 0.15);
}

[data-theme="light"] .faq-icon {
    color: var(--primary);
}

[data-theme="light"] .faq-answer,
[data-theme="light"] .faq-answer {
    color: #334155;
    border-top-color: var(--glass-border);
    background: transparent;
}

/* ── Predictor card ─────────────────────────────────────────── */
[data-theme="light"] .predictor-card {
    border-top-color: var(--primary);
}

[data-theme="light"] .subtitle {
    color: var(--text-dim);
}

[data-theme="light"] .input-help {
    color: var(--text-dim);
}

[data-theme="light"] .btn-sync {
    background: rgba(14, 165, 233, 0.08);
    border-color: rgba(14, 165, 233, 0.3);
    color: var(--primary);
}

[data-theme="light"] .btn-sync:hover {
    background: var(--primary);
    color: #ffffff;
}

/* ── Footer ─────────────────────────────────────────────────── */
[data-theme="light"] footer {
    background: var(--header-bg);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-top-color: var(--header-border);
}

[data-theme="light"] .footer-copy,
[data-theme="light"] .footer-links a {
    color: #606264;
}

[data-theme="light"] .footer-links a:hover {
    color: var(--header-nav-hover);
}

[data-theme="light"] .logo-footer .logo-text {
    color: #a6a8ac;
}

/* ── Modal de imagen ────────────────────────────────────────── */
[data-theme="light"] .modal-content {
    background: rgba(255, 255, 255, 0.95);
    border-color: var(--glass-border);
}

[data-theme="light"] .modal-content h3 {
    color: var(--text-main);
}

[data-theme="light"] .modal-actions .btn-share.outline {
    background: #ffffff;
    border-color: var(--primary);
    color: var(--text-main);
}

[data-theme="light"] .modal-actions .btn-share.whatsapp img {
    filter: none !important; /* El icono de whatsapp suele ser blanco/verde, sobre verde se ve bien */
}

[data-theme="light"] .close-modal {
    color: var(--text-dim);
}

[data-theme="light"] .close-modal:hover {
    color: var(--text-main);
}

/* ══════════════════════════════════════════════════════════
   3. BOTÓN EN MODO CLARO (icono invertido)
   ══════════════════════════════════════════════════════════ */

[data-theme="light"] .theme-toggle-btn {
    background: rgba(14, 165, 233, 0.1);
    border-color: rgba(186, 230, 253, 0.9);
    color: var(--primary);
}

[data-theme="light"] .theme-toggle-btn:hover {
    background: rgba(14, 165, 233, 0.18);
    border-color: var(--primary);
    color: var(--primary-active);
    box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.15);
}

/* En modo claro mostrar luna (para volver a oscuro) */
[data-theme="light"] .theme-toggle-btn .icon-sun  { display: none;  }
[data-theme="light"] .theme-toggle-btn .icon-moon { display: block; }

/* ══════════════════════════════════════════════════════════
   4. GUÍA — blanco-negro overrides para guia.html
   ══════════════════════════════════════════════════════════ */

/* Wrapper general guía */
[data-theme="light"] .guia-wrap {
    background: transparent;
}

/* Barra de progreso */
[data-theme="light"] .g-progress {
    background: rgba(186, 230, 253, 0.4);
}

[data-theme="light"] .g-progress-fill {
    background: linear-gradient(90deg, #0EA5E9, #38BDF8);
}

/* Hero de guía */
[data-theme="light"] .g-hero {
    background: transparent;
    border: none;
}

@media (max-width: 768px) {
    [data-theme="light"] .g-hero {
        background: #ffffff;
        border: 1px solid rgba(14, 165, 233, 0.1);
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
        /* El resto de margins/paddings se heredan de guia.css */
    }
}

[data-theme="light"] .g-hero h1 {
    color: var(--text-main);
}

[data-theme="light"] .g-hero p {
    color: var(--text-dim);
}

/* Botón back de guía */
[data-theme="light"] .g-back-btn {
    background: #ffffff;
    border-color: var(--header-border);
    color: var(--primary);
    box-shadow: 0 4px 12px rgba(14, 165, 233, 0.08);
}

[data-theme="light"] .g-back-btn:hover {
    background: var(--input-bg);
    border-color: var(--primary);
    transform: translateX(-5px);
}

/* Artículo de guía */
[data-theme="light"] .g-article {
    background: rgba(255, 255, 255, 0.88);
    border-color: var(--glass-border);
}

/* Secciones */
[data-theme="light"] .g-section {
    border-bottom-color: rgba(186, 230, 253, 0.5);
}

[data-theme="light"] .g-h2 {
    color: #0C4A6E;
    border-left-color: var(--primary);
}

[data-theme="light"] .g-p {
    color: #1e5f8a;
}

[data-theme="light"] .g-article strong,
[data-theme="light"] .g-h3 {
    color: #0C4A6E;
}

/* Fórmulas */
[data-theme="light"] .g-formula {
    background: rgba(240, 249, 255, 0.9);
    border-left-color: #0EA5E9;
    color: var(--text-main);
}

/* Highlight / success */
[data-theme="light"] .g-highlight {
    background: rgba(14, 165, 233, 0.1);
    border-left-color: #0EA5E9;
    color: #0C4A6E;
}

[data-theme="light"] .g-success {
    background: rgba(34, 197, 94, 0.1);
    color: #15803d;
}

/* Sidebar */
[data-theme="light"] .g-sidebar-card {
    background: rgba(255, 255, 255, 0.88);
    border-color: var(--glass-border);
}

[data-theme="light"] .g-sidebar-title {
    color: #0C4A6E;
    border-bottom-color: rgba(186, 230, 253, 0.6);
}

[data-theme="light"] .g-faq-item {
    border-bottom-color: rgba(186, 230, 253, 0.4);
}

[data-theme="light"] .g-faq-q {
    color: var(--text-main);
}

[data-theme="light"] .g-faq-q:hover {
    color: var(--primary);
}

[data-theme="light"] .g-faq-a {
    color: var(--text-main);
}

/* CTA sidebar */
[data-theme="light"] .g-cta {
    background: #f0f9ff;
    border: 1px solid rgba(14, 165, 233, 0.2);
}

[data-theme="light"] .g-cta-title {
    color: #0c4a6e;
}

[data-theme="light"] .g-cta-p {
    color: #475569;
}

[data-theme="light"] .g-cta-btn {
    background: linear-gradient(135deg, #0EA5E9 0%, #0284C7 100%);
    color: #ffffff;
    box-shadow: 0 4px 14px rgba(14, 165, 233, 0.3);
}

[data-theme="light"] .g-cta-btn:hover {
    background: linear-gradient(135deg, #0284C7 0%, #0369a1 100%);
    box-shadow: 0 6px 20px rgba(14, 165, 233, 0.4);
}

[data-theme="light"] .g-tip-item {
    background: rgba(14, 165, 233, 0.05);
}

