/* ============================================
   RAMAR ADVISORY - Stylesheet Mejorado 2026
   ============================================ */

/* Variables CSS */
:root {
    --primary: #1a365d;
    --primary-light: #2c5282;
    --primary-dark: #0f2744;
    --secondary: #2b6cb0;
    --accent: #d69e2e;
    --accent-hover: #b7791f;
    --success: #38a169;
    --success-hover: #2f855a;
    --text: #2d3748;
    --text-light: #718096;
    --text-muted: #a0aec0;
    --bg: #ffffff;
    --bg-light: #f7fafc;
    --bg-dark: #edf2f7;
    --border: #e2e8f0;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.07);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 40px rgba(0,0,0,0.12);
    --radius: 12px;
    --radius-lg: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
    font-size: 16px;
}

body {
    font-family: var(--font-family);
    color: var(--text);
    line-height: 1.7;
    background: var(--bg);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Utilidades */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary);
    text-align: center;
    margin-bottom: 12px;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.section-subtitle {
    font-size: 1.15rem;
    color: var(--text-light);
    text-align: center;
    max-width: 600px;
    margin: 0 auto 48px;
    line-height: 1.6;
}

/* ============================================
   HEADER / NAVEGACION
   ============================================ */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    transition: var(--transition);
}

header.scrolled {
    box-shadow: var(--shadow-md);
    background: rgba(255,255,255,0.98);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: -0.03em;
    text-decoration: none;
    transition: var(--transition);
}

.logo:hover {
    opacity: 0.8;
}

.logo span {
    color: var(--accent);
    font-weight: 700;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 8px;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--text);
    font-weight: 500;
    font-size: 0.95rem;
    padding: 8px 16px;
    border-radius: 8px;
    transition: var(--transition);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 16px;
    right: 16px;
    height: 2px;
    background: var(--accent);
    transform: scaleX(0);
    transition: var(--transition);
    border-radius: 2px;
}

.nav-links a:hover::after {
    transform: scaleX(1);
}

.nav-links a:hover {
    color: var(--primary);
    background: var(--bg-light);
}

.btn-nav {
    background: var(--primary) !important;
    color: white !important;
    padding: 10px 24px !important;
    border-radius: 8px !important;
    font-weight: 600 !important;
}

.btn-nav:hover {
    background: var(--primary-light) !important;
    transform: translateY(-1px);
}

.btn-nav::after {
    display: none !important;
}

/* Menu hamburguesa */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--primary);
    cursor: pointer;
    padding: 8px;
    border-radius: 8px;
    transition: var(--transition);
}

.menu-toggle:hover {
    background: var(--bg-light);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
    position: relative;
    overflow: hidden;
    padding-top: 72px;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(255,255,255,0.05) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 20s ease-in-out infinite;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(56,161,105,0.1) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 25s ease-in-out infinite reverse;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.05); }
    66% { transform: translate(-20px, 20px) scale(0.95); }
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 700px;
    color: white;
    padding: 80px 0;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255,255,255,0.15);
    backdrop-filter: blur(10px);
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 24px;
    border: 1px solid rgba(255,255,255,0.2);
    animation: fadeInDown 0.8s ease-out;
}

.hero-badge i {
    color: var(--accent);
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -0.03em;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero p {
    font-size: 1.25rem;
    color: rgba(255,255,255,0.85);
    margin-bottom: 40px;
    line-height: 1.7;
    max-width: 600px;
    animation: fadeInUp 0.8s ease-out 0.4s both;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease-out 0.6s both;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* Botones */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 16px 32px;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255,255,255,0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:active::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: var(--success);
    color: white;
    box-shadow: 0 4px 14px rgba(56,161,105,0.4);
}

.btn-primary:hover {
    background: var(--success-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(56,161,105,0.5);
}

.btn-secondary {
    background: rgba(255,255,255,0.12);
    color: white;
    border: 1px solid rgba(255,255,255,0.3);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255,255,255,0.2);
    transform: translateY(-2px);
}

.btn-whatsapp {
    background: #25d366;
    color: white;
    box-shadow: 0 4px 14px rgba(37,211,102,0.4);
    font-size: 1.1rem;
    padding: 18px 36px;
}

.btn-whatsapp:hover {
    background: #128c7e;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37,211,102,0.5);
}

/* ============================================
   TRUST BAR
   ============================================ */
.trust-bar {
    background: var(--primary);
    padding: 60px 0;
    color: white;
    position: relative;
    overflow: hidden;
}

.trust-bar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.trust-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    text-align: center;
    position: relative;
    z-index: 1;
}

.trust-item {
    padding: 16px;
}

.trust-item h3 {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--accent);
    margin-bottom: 8px;
    line-height: 1;
}

.trust-item p {
    font-size: 0.95rem;
    color: rgba(255,255,255,0.8);
    font-weight: 500;
}

/* ============================================
   SERVICIOS
   ============================================ */
.services {
    padding: 100px 0;
    background: var(--bg);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.service-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--success));
    transform: scaleX(0);
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: white;
    transition: var(--transition);
}

.service-card:hover .service-icon {
    transform: scale(1.1) rotate(5deg);
}

.service-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 12px;
}

.service-card p {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.7;
}

.service-features {
    list-style: none;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
}

.service-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.875rem;
    color: var(--text-light);
    margin-bottom: 10px;
    transition: var(--transition);
}

.service-features li:hover {
    color: var(--primary);
    transform: translateX(4px);
}

.service-features li i {
    color: var(--success);
    font-size: 0.75rem;
    transition: var(--transition);
}

.service-features li:hover i {
    transform: scale(1.2);
}

/* ============================================
   SOBRE NOSOTROS
   ============================================ */
.about {
    padding: 100px 0;
    background: var(--bg-light);
    position: relative;
    overflow: hidden;
}

.about::before {
    content: '';
    position: absolute;
    top: -100px;
    right: -100px;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(26,54,93,0.05) 0%, transparent 70%);
    border-radius: 50%;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr;
    max-width: 800px;
    margin: 0 auto;
    gap: 64px;
    align-items: center;
    position: relative;
    z-index: 1;
    text-align: center;
}

.about-text .about-credentials {
    justify-content: center;
}

.about-text h2 {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 24px;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.about-text p {
    color: var(--text-light);
    margin-bottom: 16px;
    font-size: 1.05rem;
    line-height: 1.8;
}

.about-text strong {
    color: var(--primary);
    font-weight: 700;
}

.about-credentials {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin: 28px 0;
}

.credential-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: white;
    padding: 10px 18px;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.credential-badge:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--accent);
}

.credential-badge i {
    color: var(--success);
}

/* ============================================
   POR QUE ELEGIRNOS
   ============================================ */
.why-us {
    padding: 100px 0;
    background: var(--bg);
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
}

.why-card {
    background: var(--bg-light);
    border-radius: var(--radius-lg);
    padding: 32px;
    border: 1px solid var(--border);
    transition: var(--transition);
    position: relative;
    text-align: left;
}

.why-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
    border-color: var(--accent);
}

.why-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    font-size: 1.4rem;
    margin-bottom: 20px;
}

.why-card h4 {
    font-weight: 700;
    color: var(--primary);
    font-size: 1.1rem;
    margin-bottom: 12px;
}

.why-card p {
    color: var(--text-light);
    line-height: 1.7;
    font-size: 0.98rem;
}

/* ============================================
   FAQ
   ============================================ */
.faq {
    padding: 100px 0;
    background: var(--bg-light);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: white;
    border-radius: var(--radius);
    margin-bottom: 12px;
    border: 1px solid var(--border);
    overflow: hidden;
    transition: var(--transition);
}

.faq-item:hover {
    box-shadow: var(--shadow-sm);
}

.faq-item.active {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
}

.faq-question {
    width: 100%;
    padding: 24px 28px;
    background: none;
    border: none;
    text-align: left;
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--primary);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
    font-family: inherit;
}

.faq-question:hover {
    background: var(--bg-light);
}

.faq-question i {
    transition: var(--transition);
    color: var(--success);
    font-size: 1rem;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
    padding: 0 28px 24px;
}

.faq-answer p {
    color: var(--text-light);
    line-height: 1.8;
    font-size: 0.95rem;
}

/* ============================================
   CONTACTO
   ============================================ */
.contact {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
    color: white;
    position: relative;
    overflow: hidden;
}

.contact::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(255,255,255,0.05) 0%, transparent 70%);
}

.contact::after {
    content: '';
    position: absolute;
    bottom: -100px;
    left: -100px;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(214,158,46,0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.contact .section-title {
    color: white;
    position: relative;
    z-index: 1;
}

.contact .section-subtitle {
    color: rgba(255,255,255,0.8);
    position: relative;
    z-index: 1;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: start;
    position: relative;
    z-index: 1;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 20px;
    background: rgba(255,255,255,0.08);
    border-radius: var(--radius);
    border: 1px solid rgba(255,255,255,0.1);
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

.contact-item:hover {
    background: rgba(255,255,255,0.12);
    transform: translateX(4px);
    border-color: rgba(255,255,255,0.2);
}

.contact-item i {
    font-size: 1.25rem;
    color: var(--accent);
    margin-top: 2px;
    flex-shrink: 0;
    width: 24px;
    text-align: center;
}

.contact-item div strong {
    display: block;
    margin-bottom: 4px;
    font-weight: 600;
    font-size: 0.95rem;
}

.contact-item div span,
.contact-item div a {
    color: rgba(255,255,255,0.85);
    text-decoration: none;
    font-size: 0.95rem;
    transition: var(--transition);
}

.contact-item div a:hover {
    color: var(--accent);
}

.contact-item div small {
    display: block;
    margin-top: 4px;
    font-size: 0.8rem;
    opacity: 0.7;
}

.contact-form {
    background: rgba(255,255,255,0.08);
    backdrop-filter: blur(20px);
    border-radius: var(--radius-lg);
    padding: 40px;
    border: 1px solid rgba(255,255,255,0.1);
    transition: var(--transition);
}

.contact-form:hover {
    border-color: rgba(255,255,255,0.2);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    font-size: 0.9rem;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 14px 16px;
    border-radius: var(--radius);
    border: 1px solid rgba(255,255,255,0.2);
    background: rgba(255,255,255,0.1);
    color: white;
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(255,255,255,0.5);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent);
    background: rgba(255,255,255,0.15);
    box-shadow: 0 0 0 3px rgba(214,158,46,0.2);
}

.form-group textarea {
    min-height: 120px;
    resize: vertical;
}

.form-group select option {
    background: var(--primary);
    color: white;
}

.contact-cta {
    text-align: center;
    margin-top: 48px;
    position: relative;
    z-index: 1;
}

/* ============================================
   FOOTER
   ============================================ */
footer {
    background: var(--primary-dark);
    color: rgba(255,255,255,0.7);
    padding: 60px 0 24px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-brand .logo {
    color: white;
    margin-bottom: 16px;
    display: inline-block;
    font-size: 1.5rem;
}

.footer-brand p {
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 20px;
    color: rgba(255,255,255,0.7);
}

.social-links {
    display: flex;
    gap: 12px;
}

.social-links a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: var(--transition);
    font-size: 1rem;
}

.social-links a:hover {
    background: var(--success);
    transform: translateY(-3px);
    box-shadow: 0 4px 12px rgba(56,161,105,0.4);
}

.footer-links h4 {
    color: white;
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition);
    display: inline-block;
}

.footer-links a:hover {
    color: var(--accent);
    transform: translateX(4px);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 24px;
    text-align: center;
    font-size: 0.85rem;
}

.footer-bottom p {
    margin-bottom: 8px;
    color: rgba(255,255,255,0.5);
}

/* ============================================
   WHATSAPP FLOAT
   ============================================ */
.whatsapp-float {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 60px;
    height: 60px;
    background: #25d366;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.75rem;
    text-decoration: none;
    box-shadow: 0 4px 20px rgba(37,211,102,0.4);
    z-index: 999;
    transition: var(--transition);
    animation: pulse 2s infinite;
}

.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 25px rgba(37,211,102,0.6);
    background: #128c7e;
}

@keyframes pulse {
    0%, 100% { 
        box-shadow: 0 4px 20px rgba(37,211,102,0.4); 
    }
    50% { 
        box-shadow: 0 4px 30px rgba(37,211,102,0.7); 
    }
}

/* ============================================
   ANIMACIONES DE ENTRADA (SCROLL)
   ============================================ */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.fade-in-left {
    opacity: 0;
    transform: translateX(-30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.fade-in-right {
    opacity: 0;
    transform: translateX(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

/* Stagger delays para elementos en grid */
.services-grid .fade-in:nth-child(1) { transition-delay: 0.1s; }
.services-grid .fade-in:nth-child(2) { transition-delay: 0.2s; }
.services-grid .fade-in:nth-child(3) { transition-delay: 0.3s; }
.services-grid .fade-in:nth-child(4) { transition-delay: 0.4s; }

.why-grid .fade-in:nth-child(1) { transition-delay: 0.1s; }
.why-grid .fade-in:nth-child(2) { transition-delay: 0.2s; }
.why-grid .fade-in:nth-child(3) { transition-delay: 0.3s; }
.why-grid .fade-in:nth-child(4) { transition-delay: 0.4s; }

/* ============================================
   UTILIDADES
   ============================================ */
.text-center { text-align: center; }
.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }
.mt-5 { margin-top: 3rem; }

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 1024px) {
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }

    .nav-links {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: rgba(255,255,255,0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 24px;
        gap: 8px;
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        pointer-events: none;
        transition: var(--transition);
        border-bottom: 1px solid var(--border);
    }

    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }

    .nav-links a {
        width: 100%;
        text-align: center;
        padding: 12px;
    }

    .nav-links a::after {
        display: none;
    }

    .hero h1 {
        font-size: 2.25rem;
    }

    .hero p {
        font-size: 1.05rem;
    }

    .section-title {
        font-size: 1.875rem;
    }

    .trust-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }

    .trust-item h3 {
        font-size: 2rem;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .contact-form {
        padding: 24px;
    }

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

    .about-credentials {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.875rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .trust-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .trust-item h3 {
        font-size: 2rem;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .why-grid {
        grid-template-columns: 1fr;
    }

    .section-title {
        font-size: 1.625rem;
    }

    .contact-form {
        padding: 20px;
    }

    .faq-question {
        padding: 20px;
        font-size: 0.95rem;
    }

    .faq-item.active .faq-answer {
        padding: 0 20px 20px;
    }
}

/* ============================================
   MODO OSCURO ( prefers-color-scheme )
   ============================================ */
@media (prefers-color-scheme: dark) {
    :root {
        --text: #e2e8f0;
        --text-light: #a0aec0;
        --bg: #0f172a;
        --bg-light: #1e293b;
        --bg-dark: #334155;
        --border: #334155;
    }

    header {
        background: rgba(15,23,42,0.95);
        border-bottom-color: #334155;
    }

    .service-card {
        background: #1e293b;
        border-color: #334155;
    }

    .service-features {
        border-top-color: #334155;
    }

    .why-card {
        background: #1e293b;
        border-color: #334155;
    }

    .faq-item {
        background: #1e293b;
        border-color: #334155;
    }

    .credential-badge {
        background: #1e293b;
        border-color: #334155;
    }
}

/* ============================================
   ACCESIBILIDAD
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }
}

/* Focus visible para navegacion por teclado */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
    outline: 3px solid var(--accent);
    outline-offset: 2px;
}

/* Skip link para accesibilidad */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--primary);
    color: white;
    padding: 8px;
    text-decoration: none;
    z-index: 10000;
    transition: top 0.3s;
}

.skip-link:focus {
    top: 0;
}

/* ============================================
   BLOG
   ============================================ */
.blog-hero {
    padding: 140px 0 60px;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
    color: white;
    text-align: center;
}

.blog-hero h1 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 12px;
}

.blog-hero p {
    color: rgba(255,255,255,0.85);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

.blog-list-section {
    padding: 80px 0 100px;
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 28px;
}

.blog-card {
    background: var(--bg-light);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
}

.blog-card-image {
    display: block;
    aspect-ratio: 16/9;
    overflow: hidden;
}

.blog-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.blog-card:hover .blog-card-image img {
    transform: scale(1.05);
}

.blog-card-body {
    padding: 28px;
}

.blog-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-3px);
    border-color: var(--accent);
}

.blog-date {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent-hover);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 12px;
}

.blog-card h2 {
    font-size: 1.25rem;
    line-height: 1.4;
    margin-bottom: 12px;
}

.blog-card h2 a {
    color: var(--primary);
    text-decoration: none;
}

.blog-card h2 a:hover {
    color: var(--secondary);
}

.blog-card p {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 16px;
}

.blog-read-more {
    color: var(--secondary);
    font-weight: 600;
    font-size: 0.9rem;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition);
}

.blog-read-more:hover {
    gap: 10px;
    color: var(--accent-hover);
}

.blog-post {
    padding: 140px 0 100px;
}

.blog-post-container {
    max-width: 760px;
}

.blog-back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--secondary);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 24px;
}

.blog-back-link:hover {
    color: var(--accent-hover);
}

.blog-post h1 {
    font-size: 2.25rem;
    color: var(--primary);
    line-height: 1.25;
    margin: 8px 0 32px;
    font-weight: 800;
}

.blog-post-content {
    font-size: 1.05rem;
    line-height: 1.85;
    color: var(--text);
}

.blog-post-content h2 {
    font-size: 1.5rem;
    color: var(--primary);
    margin: 40px 0 16px;
    font-weight: 700;
}

.blog-post-content h3 {
    font-size: 1.2rem;
    color: var(--primary);
    margin: 32px 0 12px;
    font-weight: 700;
}

.blog-post-content p {
    margin-bottom: 18px;
}

.blog-post-content ul,
.blog-post-content ol {
    margin: 0 0 18px 24px;
}

.blog-post-content li {
    margin-bottom: 8px;
}

.blog-post-content strong {
    color: var(--primary);
}

.blog-post-content img {
    width: 100%;
    border-radius: var(--radius-lg);
    margin: 8px 0 32px;
    box-shadow: var(--shadow-md);
}

.blog-post-content a {
    color: var(--secondary);
    font-weight: 600;
}

.blog-post-content a:hover {
    color: var(--accent-hover);
}

/* ============================================
   LIBRO DE RECLAMACIONES
   ============================================ */
.reclamos-section {
    padding: 140px 0 100px;
}

.reclamos-container {
    max-width: 760px;
}

.reclamos-container h1 {
    font-size: 2.25rem;
    color: var(--primary);
    font-weight: 800;
    margin-bottom: 16px;
}

.reclamo-form h3 {
    font-size: 1.15rem;
    color: var(--primary);
    margin: 32px 0 16px;
    font-weight: 700;
}

.reclamo-form h3:first-of-type {
    margin-top: 0;
}

.reclamo-form .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.reclamo-legal-note {
    font-size: 0.85rem;
    color: var(--text-light);
    background: var(--bg-light);
    border-left: 3px solid var(--accent);
    padding: 14px 18px;
    border-radius: 8px;
    margin: 24px 0;
    line-height: 1.6;
}

.reclamo-success {
    text-align: center;
    background: var(--bg-light);
    border-radius: var(--radius-lg);
    padding: 56px 32px;
    border: 1px solid var(--border);
}

.reclamo-success i {
    font-size: 3.5rem;
    color: var(--success);
    margin-bottom: 20px;
}

.reclamo-success h2 {
    font-size: 1.5rem;
    color: var(--primary);
    margin-bottom: 16px;
}

.reclamo-success p {
    color: var(--text-light);
    margin-bottom: 12px;
    line-height: 1.7;
}

.reclamo-success .btn {
    margin-top: 16px;
}

@media (max-width: 640px) {
    .reclamo-form .form-row {
        grid-template-columns: 1fr;
    }

    .blog-hero {
        padding: 120px 0 48px;
    }

    .blog-hero h1 {
        font-size: 1.875rem;
    }

    .blog-post {
        padding: 120px 0 72px;
    }

    .blog-post h1 {
        font-size: 1.625rem;
    }

    .reclamos-section {
        padding: 120px 0 72px;
    }
}

/* ============================================
   PAGINAS LEGALES (Politica de Privacidad, etc.)
   ============================================ */
.legal-page {
    padding: 140px 0 100px;
}

.legal-container {
    max-width: 760px;
}

.legal-container h1 {
    font-size: 2.25rem;
    color: var(--primary);
    font-weight: 800;
    margin-bottom: 8px;
}

.legal-updated {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 32px;
}

.legal-container h2 {
    font-size: 1.3rem;
    color: var(--primary);
    font-weight: 700;
    margin: 36px 0 14px;
}

.legal-container p {
    color: var(--text);
    line-height: 1.8;
    margin-bottom: 16px;
}

.legal-container ul {
    margin: 0 0 16px 24px;
}

.legal-container li {
    color: var(--text);
    line-height: 1.8;
    margin-bottom: 8px;
}

.legal-container strong {
    color: var(--primary);
}

.legal-container a {
    color: var(--secondary);
    font-weight: 600;
}

.legal-container a:hover {
    color: var(--accent-hover);
}

@media (max-width: 640px) {
    .legal-page {
        padding: 120px 0 72px;
    }

    .legal-container h1 {
        font-size: 1.75rem;
    }
}