/* ============================================================
   ux.css — Mejoras UX/UI sobre style.css
   Principios aplicados: jerarquía visual, WCAG AA, micro-
   interacciones, tipografía, animaciones de scroll, 8px grid.
   ============================================================ */

/* ---- Google Fonts: Inter ----------------------------------- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&display=swap');

/* ---- Variables complementarias ---------------------------- */
:root {
    --font-body:     'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* Brand tones — alineados con logo "en negro" */
    --brand-black:   #0a0a0a;
    --brand-navy:    #0f1e3d;
    --brand-blue:    #1e40af;

    /* Transiciones estándar */
    --ease-out:      cubic-bezier(.22,.68,0,1.2);
    --ease-smooth:   cubic-bezier(.4,0,.2,1);
    --dur-fast:      .15s;
    --dur-mid:       .25s;
    --dur-slow:      .4s;

    /* Elevaciones */
    --shadow-card:   0 2px 8px rgba(0,0,0,.06), 0 0 1px rgba(0,0,0,.08);
    --shadow-hover:  0 8px 24px rgba(0,0,0,.12), 0 2px 8px rgba(0,0,0,.06);
    --shadow-focus:  0 0 0 3px rgba(30,64,175,.25);
}

/* ---- Tipografía global ------------------------------------ */
body {
    font-family: var(--font-body);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-body);
    letter-spacing: -.015em;
}

/* ---- Accesibilidad: focus-visible ------------------------- */
:focus { outline: none; }
:focus-visible {
    outline: 2px solid var(--brand-blue);
    outline-offset: 3px;
    border-radius: 4px;
}
.btn:focus-visible {
    box-shadow: var(--shadow-focus);
    outline: none;
}

/* ---- Reducir movimiento ----------------------------------- */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: .01ms !important;
        transition-duration: .01ms !important;
    }
    .reveal, .reveal-left, .reveal-right, .reveal-up { opacity: 1 !important; transform: none !important; }
}

/* ============================================================
   LOGO EN HEADER
   ============================================================ */

/* Logo — ya no usa <picture>, solo <img> directo */

.logo img {
    height: 40px;
    width: auto;
    object-fit: contain;
    border-radius: 0;
    /* Logo transparente: añadir brillo para visibilidad sobre fondo oscuro */
    filter: brightness(1.2) contrast(1.05);
}

/* Fallback: si la imagen falla, mostrar nombre de la empresa */
.logo img[style*="display:none"] ~ span,
.logo img[style*="display: none"] ~ span { display: inline !important; font-weight: 700; font-size: 1.1rem; color: white; }

.logo > span { display: none; } /* Ocultar texto por defecto cuando hay logo */

/* ============================================================
   HEADER MEJORADO
   ============================================================ */

.site-header {
    background: var(--brand-navy);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid rgba(255,255,255,.06);
    transition: background var(--dur-mid) var(--ease-smooth);
}

.site-header.scrolled {
    background: rgba(15,30,61,.96);
    box-shadow: 0 1px 20px rgba(0,0,0,.25);
}

.header-nav a {
    font-weight: 500;
    letter-spacing: .01em;
    transition: background var(--dur-fast), color var(--dur-fast), transform var(--dur-fast);
}
.header-nav a:hover { transform: translateY(-1px); }

.btn-nav {
    transition: background var(--dur-fast), box-shadow var(--dur-fast), transform var(--dur-fast) !important;
}
.btn-nav:hover { transform: translateY(-1px); box-shadow: 0 4px 12px rgba(0,0,0,.15) !important; }

/* ============================================================
   HERO — MEJORAS
   ============================================================ */

.hero-headline { letter-spacing: -.03em; }

.hero-badge {
    font-family: var(--font-body);
    letter-spacing: .08em;
    animation: fadeInDown .6s var(--ease-out) both;
}

.hero-headline { animation: fadeInUp .7s .1s var(--ease-out) both; }
.hero-sub      { animation: fadeInUp .7s .2s var(--ease-out) both; }
.hero-ctas     { animation: fadeInUp .7s .3s var(--ease-out) both; }
.hero-trust-row{ animation: fadeInUp .7s .4s var(--ease-out) both; }

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-16px); }
    to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* Botones hero con sombra mejorada */
.btn-white {
    box-shadow: 0 4px 14px rgba(0,0,0,.18);
    transition: background var(--dur-fast), transform var(--dur-fast), box-shadow var(--dur-fast);
}
.btn-white:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0,0,0,.22);
}
.btn-ghost-white {
    transition: background var(--dur-fast), border-color var(--dur-fast), transform var(--dur-fast);
}
.btn-ghost-white:hover { transform: translateY(-2px); }

/* Trust row: iconos SVG inline reemplazando emojis */
.hero-trust-row {
    font-weight: 500;
    letter-spacing: .025em;
}
.trust-icon-wrap {
    display: inline-flex;
    align-items: center;
    gap: .375rem;
}
.trust-icon-svg {
    width: 15px; height: 15px;
    flex-shrink: 0;
    opacity: .8;
}

/* ============================================================
   TRUST STRIP — MEJORAS
   ============================================================ */

.trust-strip { border-top: 1px solid rgba(255,255,255,.06); }
.trust-num   { letter-spacing: -.01em; }

/* ============================================================
   SECCIONES — ANIMACIONES DE SCROLL
   ============================================================ */

/* Estado inicial: invisible + desplazado */
.reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity .55s var(--ease-smooth), transform .55s var(--ease-smooth);
}
.reveal-left {
    opacity: 0;
    transform: translateX(-28px);
    transition: opacity .55s var(--ease-smooth), transform .55s var(--ease-smooth);
}
.reveal-right {
    opacity: 0;
    transform: translateX(28px);
    transition: opacity .55s var(--ease-smooth), transform .55s var(--ease-smooth);
}
/* Estado visible: disparado por JS IntersectionObserver */
.reveal.is-visible,
.reveal-left.is-visible,
.reveal-right.is-visible {
    opacity: 1;
    transform: none;
}
/* Retrasos escalonados para grupos */
.reveal-delay-1 { transition-delay: .1s; }
.reveal-delay-2 { transition-delay: .2s; }
.reveal-delay-3 { transition-delay: .3s; }

/* ============================================================
   CARDS — MEJORAS
   ============================================================ */

.feature-card,
.option-card,
.form-card,
.type-card,
.policy-card,
.section-card {
    transition: box-shadow var(--dur-mid) var(--ease-smooth),
                transform var(--dur-mid) var(--ease-smooth),
                border-color var(--dur-mid) var(--ease-smooth);
}

.option-card:hover,
.policy-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.type-card:hover {
    transform: translateY(-3px);
}

/* ============================================================
   BOTONES — MICRO-INTERACCIONES
   ============================================================ */

.btn {
    position: relative;
    overflow: hidden;
    transition: background var(--dur-fast), border-color var(--dur-fast),
                box-shadow var(--dur-fast), transform var(--dur-fast),
                opacity var(--dur-fast);
}
/* Efecto ripple al hacer clic */
.btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255,255,255,.12);
    opacity: 0;
    border-radius: inherit;
    transition: opacity var(--dur-fast);
}
.btn:active::after { opacity: 1; }
.btn:active:not(:disabled) { transform: translateY(1px); }

.btn-primary:hover:not(:disabled) { transform: translateY(-1px); box-shadow: 0 4px 12px rgba(30,64,175,.35); }
.btn-secondary:hover:not(:disabled) { transform: translateY(-1px); }
.btn-outline:hover:not(:disabled)  { transform: translateY(-1px); }

/* ============================================================
   FORMS — MEJORAS UX
   ============================================================ */

/* Labels más definidos */
.form-group label {
    font-weight: 600;
    font-size: .8125rem;
    text-transform: uppercase;
    letter-spacing: .04em;
    color: var(--gray-600);
}

/* Inputs con mejor focus y transición suave */
.form-group input,
.form-group select,
.form-group textarea {
    transition: border-color var(--dur-fast), box-shadow var(--dur-fast), background var(--dur-fast);
    background: var(--gray-50);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    background: white;
    box-shadow: var(--shadow-focus);
}

/* Estado de error en campo */
.form-group input.input-error,
.form-group select.input-error,
.form-group textarea.input-error {
    border-color: var(--danger);
    box-shadow: 0 0 0 3px rgba(220,38,38,.15);
}
.field-error-msg {
    font-size: .75rem;
    color: var(--danger);
    display: flex;
    align-items: center;
    gap: .25rem;
    margin-top: .125rem;
}

/* Contador de caracteres en textarea */
.char-counter {
    font-size: .7rem;
    color: var(--gray-400);
    text-align: right;
    margin-top: .25rem;
}
.char-counter.near-limit { color: var(--accent); }
.char-counter.at-limit   { color: var(--danger); font-weight: 700; }

/* Checkbox / Radio mejorados */
.checkbox-label {
    padding: .5rem;
    border-radius: var(--radius);
    transition: background var(--dur-fast);
}
.checkbox-label:hover { background: var(--gray-50); }

/* ============================================================
   PROGRESO DE FORMULARIO MULTI-PASO
   ============================================================ */

.form-steps {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    margin-bottom: 2rem;
}
.form-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: .375rem;
    position: relative;
    flex: 1;
    max-width: 160px;
}
.form-step-dot {
    width: 32px; height: 32px;
    border-radius: 50%;
    border: 2px solid var(--gray-300);
    background: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: .8125rem;
    font-weight: 700;
    color: var(--gray-400);
    transition: border-color var(--dur-mid), background var(--dur-mid), color var(--dur-mid);
    z-index: 1;
}
.form-step-label {
    font-size: .7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .05em;
    color: var(--gray-400);
    text-align: center;
    transition: color var(--dur-mid);
    white-space: nowrap;
}
.form-step-line {
    flex: 1;
    height: 2px;
    background: var(--gray-200);
    margin-top: -20px;
    transition: background var(--dur-mid);
}
/* Paso activo */
.form-step.active .form-step-dot  { border-color: var(--primary); background: var(--primary); color: white; }
.form-step.active .form-step-label{ color: var(--primary); font-weight: 700; }
/* Paso completado */
.form-step.done .form-step-dot  { border-color: var(--success); background: var(--success); color: white; }
.form-step.done .form-step-label{ color: var(--success); }
.form-step.done + .form-step-line { background: var(--success); }

/* ============================================================
   PANTALLA DE ÉXITO — MEJORAS
   ============================================================ */

.success-screen {
    animation: fadeInUp .5s var(--ease-out) both;
}
.success-icon {
    animation: popIn .6s .1s var(--ease-out) both;
}
@keyframes popIn {
    0%   { transform: scale(0); opacity: 0; }
    70%  { transform: scale(1.15); opacity: 1; }
    100% { transform: scale(1); }
}

.credentials-box {
    border: 2px solid var(--primary-light);
    background: linear-gradient(135deg, #f0f7ff 0%, #e8f4f8 100%);
    position: relative;
}
.cred-value {
    font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    letter-spacing: .2em;
    color: var(--primary-dark);
    font-size: 1.375rem;
}

/* Botón copiar con feedback visual */
.copy-btn {
    display: inline-flex;
    align-items: center;
    gap: .375rem;
    font-size: .75rem;
    color: var(--primary);
    background: none;
    border: none;
    cursor: pointer;
    padding: .25rem .5rem;
    border-radius: var(--radius-sm);
    transition: background var(--dur-fast), color var(--dur-fast);
    font-family: inherit;
}
.copy-btn:hover { background: var(--primary-light); }
.copy-btn.copied { color: var(--success); }

/* ============================================================
   FOOTER — REDISEÑO COMPLETO
   ============================================================ */

.site-footer {
    background: var(--brand-navy);
    color: rgba(255,255,255,.7);
    padding: 0;
    font-size: .875rem;
    text-align: left;
    margin-top: auto;
}

.footer-top {
    padding: 3.5rem 0 2.5rem;
    border-bottom: 1px solid rgba(255,255,255,.08);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 2.5rem;
    align-items: start;
}

.footer-brand .footer-logo {
    display: inline-flex;
    align-items: center;
    text-decoration: none;
    margin-bottom: 1rem;
}
.footer-brand .footer-logo img {
    height: 38px;
    width: auto;
    object-fit: contain;
    /* Logo transparente: se ve con sus propios colores sobre fondo oscuro */
    filter: brightness(1.15) contrast(1.05);
    opacity: 1;
}
.footer-brand .footer-logo span { display: none; }
.footer-brand p {
    font-size: .8125rem;
    line-height: 1.65;
    color: rgba(255,255,255,.55);
    max-width: 280px;
    margin-bottom: 1.25rem;
}
.footer-certif {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    font-size: .7rem;
    font-weight: 600;
    letter-spacing: .06em;
    text-transform: uppercase;
    color: rgba(255,255,255,.4);
    border: 1px solid rgba(255,255,255,.12);
    padding: .3rem .75rem;
    border-radius: 999px;
}

.footer-col h4 {
    font-size: .75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .08em;
    color: rgba(255,255,255,.5);
    margin-bottom: 1rem;
}
.footer-col ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: .5rem;
}
.footer-col ul li a {
    color: rgba(255,255,255,.65);
    text-decoration: none;
    font-size: .8125rem;
    transition: color var(--dur-fast), padding-left var(--dur-fast);
    display: inline-block;
}
.footer-col ul li a:hover {
    color: white;
    padding-left: 4px;
}

.footer-contact p {
    font-size: .8125rem;
    color: rgba(255,255,255,.55);
    line-height: 1.6;
    display: flex;
    align-items: flex-start;
    gap: .5rem;
    margin-bottom: .5rem;
}
.footer-contact-icon {
    width: 14px; height: 14px;
    flex-shrink: 0;
    margin-top: 2px;
    opacity: .6;
}

.footer-bottom {
    padding: 1.25rem 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: .75rem;
}
.footer-bottom p {
    font-size: .75rem;
    color: rgba(255,255,255,.35);
    margin: 0;
}
.footer-law-badge {
    display: inline-flex;
    align-items: center;
    gap: .375rem;
    font-size: .7rem;
    font-weight: 600;
    letter-spacing: .05em;
    color: rgba(255,255,255,.4);
}

/* ============================================================
   TRACKING — MEJORAS
   ============================================================ */

.tracking-login-wrap {
    max-width: 440px;
    margin: 0 auto;
}
.tracking-header {
    text-align: center;
    margin-bottom: 2rem;
}
.tracking-icon {
    width: 56px; height: 56px;
    background: var(--primary-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
}
.tracking-icon svg { width: 24px; height: 24px; color: var(--primary); }

/* ============================================================
   GARANTÍAS — MEJORAS
   ============================================================ */

.guarantee-item {
    background: rgba(255,255,255,.06);
    border: 1px solid rgba(255,255,255,.1);
    border-radius: var(--radius-lg);
    padding: 1.75rem;
    text-align: center;
    transition: background var(--dur-mid), transform var(--dur-mid);
}
.guarantee-item:hover {
    background: rgba(255,255,255,.1);
    transform: translateY(-3px);
}
.guarantee-icon {
    width: 48px; height: 48px;
    background: rgba(255,255,255,.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto .875rem;
    font-size: 1.5rem;
}

.guarantees-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.25rem;
}

/* ============================================================
   POLÍTICAS — MEJORAS
   ============================================================ */

.policies-section { padding: 5rem 0; background: var(--gray-50); }

/* Grid 2 columnas para que las tarjetas respiren */
.policies-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(420px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.policy-card {
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    padding: 1.25rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.25rem;
    text-decoration: none;
    color: var(--gray-800);
    min-height: 84px;
    transition: box-shadow var(--dur-mid), transform var(--dur-mid), border-color var(--dur-mid);
}
.policy-card:hover {
    border-color: var(--primary);
    color: var(--gray-800);
    box-shadow: var(--shadow-hover);
}
.policy-icon {
    width: 48px; height: 48px;
    background: var(--primary-light);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}
.policy-info { flex: 1; min-width: 0; }
/* Título completo — sin truncación */
.policy-info h4 {
    font-size: .9375rem;
    font-weight: 700;
    margin-bottom: .25rem;
    line-height: 1.3;
    white-space: normal;
    overflow: visible;
    text-overflow: unset;
}
.policy-info p {
    font-size: .8125rem;
    color: var(--gray-500);
    line-height: 1.45;
    white-space: normal;
}
.policy-pdf-badge {
    font-size: .65rem;
    font-weight: 800;
    letter-spacing: .08em;
    color: var(--danger);
    border: 1.5px solid currentColor;
    padding: .2rem .45rem;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}

@media (max-width: 900px) {
    .policies-grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================================
   TOAST NOTIFICATIONS NATIVAS
   ============================================================ */

#toast-container {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: .5rem;
    pointer-events: none;
}
.toast {
    display: flex;
    align-items: center;
    gap: .75rem;
    padding: .875rem 1.125rem;
    border-radius: var(--radius);
    background: var(--gray-900);
    color: white;
    font-size: .875rem;
    font-weight: 500;
    box-shadow: 0 8px 24px rgba(0,0,0,.2);
    pointer-events: auto;
    animation: toastIn .3s var(--ease-out) both;
    max-width: 340px;
}
.toast.toast-success { background: #14532d; border-left: 3px solid var(--success); }
.toast.toast-error   { background: #7f1d1d; border-left: 3px solid var(--danger);  }
.toast.toast-info    { background: var(--brand-navy); border-left: 3px solid var(--primary); }
.toast.hiding        { animation: toastOut .25s var(--ease-smooth) both; }
@keyframes toastIn  { from { opacity:0; transform: translateX(24px); } to { opacity:1; transform:none; } }
@keyframes toastOut { from { opacity:1; transform:none; } to { opacity:0; transform: translateX(24px); } }

/* ============================================================
   LOADING SPINNER MEJORADO
   ============================================================ */

.spinner {
    display: inline-block;
    width: 18px; height: 18px;
    border: 2px solid rgba(255,255,255,.35);
    border-top-color: white;
    border-radius: 50%;
    animation: spin .7s linear infinite;
}
.spinner-dark {
    border-color: rgba(30,64,175,.2);
    border-top-color: var(--primary);
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ============================================================
   RESPONSIVE — MEJORAS MOBILE
   ============================================================ */

@media (max-width: 900px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }
    .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 640px) {
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    .form-steps { gap: 0; }
    .form-step-label { display: none; }

    .guarantees-grid {
        grid-template-columns: 1fr 1fr;
        gap: 1rem;
    }
    .policies-grid {
        grid-template-columns: 1fr;
    }
    .hero-trust-row { gap: .5rem; font-size: .75rem; }
}

@media (max-width: 480px) {
    .guarantees-grid { grid-template-columns: 1fr; }
    .steps-grid      { flex-direction: column; align-items: center; }
    .step-connector  { width: 2px; height: 30px; margin: 0; }
}

/* ============================================================
   FINAL CTA — MEJORAS
   ============================================================ */

.final-cta { padding: 5rem 0; background: var(--brand-navy); }
.final-cta-box {
    text-align: center;
    max-width: 620px;
    margin: 0 auto;
    color: white;
}
.final-cta-icon {
    width: 64px; height: 64px;
    background: rgba(255,255,255,.1);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin: 0 auto 1.5rem;
}
.final-cta-box h2 { font-size: clamp(1.5rem,3vw,2rem); margin-bottom: .75rem; }
.final-cta-box p  { opacity: .75; margin-bottom: 2rem; }
.final-cta-btns   { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }