/* ============================================
   CENTRO DE VERIFICACIÓN VEHICULAR IRA003
   TALLER PEREZ HERMANOS
   Stylesheet Principal
   ============================================ */

/* ============================================
   VARIABLES CSS
   ============================================ */
:root {
    /* Colores principales */
    --color-primary: #1e3a8a;        /* Azul oscuro */
    --color-primary-dark: #1e293b;   /* Azul muy oscuro */
    --color-secondary: #22c55e;      /* Verde acento */
    --color-secondary-dark: #16a34a; /* Verde oscuro */

    /* Colores neutros */
    --color-white: #ffffff;
    --color-light: #f8fafc;
    --color-gray-light: #e2e8f0;
    --color-gray: #94a3b8;
    --color-gray-dark: #475569;
    --color-dark: #1e293b;

    /* Tipografía */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-size-base: 16px;
    --line-height-base: 1.6;

    /* Espaciado */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;

    /* Bordes */
    --border-radius: 8px;
    --border-radius-lg: 12px;

    /* Sombras */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);

    /* Transiciones */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
}

/* ============================================
   RESET Y BASE
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    line-height: var(--line-height-base);
    color: var(--color-dark);
    background-color: var(--color-white);
    overflow-x: hidden;
}

/* ============================================
   TIPOGRAFÍA
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary-dark);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--spacing-sm);
}

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

a:hover {
    color: var(--color-secondary);
}

ul, ol {
    margin-left: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

/* ============================================
   CONTENEDORES
   ============================================ */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section {
    padding: var(--spacing-xxl) 0;
}

/* ============================================
   HEADER Y NAVEGACIÓN
   ============================================ */
.header {
    background-color: var(--color-white);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-xs);
    max-width: 1200px;
    margin: 0 auto;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo {
    height: 50px;
    width: auto;
}

.logo-tph {
    margin-right: var(--spacing-xs);
}

.logo-cvv {
    margin-right: var(--spacing-sm);
}

.brand-text {
    display: flex;
    flex-direction: column;
}

.brand-name {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1.2;
}

.brand-subtitle {
    font-size: 0.75rem;
    color: var(--color-gray-dark);
}

/* Menú de navegación */
.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
    margin: 0;
}

.nav-menu li a {
    color: var(--color-dark);
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
}

.nav-menu li a:hover,
.nav-menu li a.active {
    background-color: var(--color-primary);
    color: var(--color-white);
}

/* Botón hamburguesa (móvil) */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--color-primary);
    border-radius: 2px;
    transition: all var(--transition-base);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    position: relative;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
    padding: var(--spacing-xxl) var(--spacing-md);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.2);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero-logo {
    width: 150px;
    height: auto;
    margin-bottom: var(--spacing-md);
    filter: drop-shadow(0 4px 6px rgba(0, 0, 0, 0.3));
}

.hero-title {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-white);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-lg);
    color: var(--color-light);
    line-height: 1.6;
}

/* ============================================
   BOTONES
   ============================================ */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition-base);
    border: 2px solid transparent;
    text-decoration: none;
}

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

.btn-primary:hover {
    background-color: var(--color-secondary-dark);
    border-color: var(--color-secondary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

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

/* ============================================
   SECCIONES
   ============================================ */
.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: var(--spacing-xl);
    color: var(--color-primary);
}

/* Sección Sobre Nosotros */
.section-about {
    background-color: var(--color-light);
}

.about-content-centered {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.about-content-centered p {
    font-size: 1.125rem;
    color: var(--color-gray-dark);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

/* Sección Servicios */
.service-content-centered {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.service-main-title {
    font-size: 2rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    font-weight: 700;
}

.service-main-description {
    font-size: 1.25rem;
    color: var(--color-gray-dark);
    line-height: 1.8;
    margin: 0;
}

/* Sección Calendario */
.section-calendar {
    background-color: var(--color-light);
}

.calendar-intro {
    text-align: center;
    font-size: 1.125rem;
    color: var(--color-gray-dark);
    margin-bottom: var(--spacing-xl);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.calendar-card {
    background-color: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: all var(--transition-base);
    border-top: 4px solid var(--color-secondary);
}

.calendar-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.calendar-digit {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.calendar-periods {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.calendar-period {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm);
    background-color: var(--color-light);
    border-radius: var(--border-radius);
}

.period-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-gray-dark);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.period-months {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-primary);
}

/* Sección FAQs */
.section-faqs {
    background-color: var(--color-white);
}

.faq-container {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    margin-bottom: var(--spacing-md);
    border: 1px solid var(--color-gray-light);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: all var(--transition-base);
}

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

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    background-color: var(--color-white);
    border: none;
    cursor: pointer;
    text-align: left;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-primary-dark);
    transition: all var(--transition-fast);
}

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

.faq-question span:first-child {
    flex: 1;
    padding-right: var(--spacing-md);
}

.faq-icon {
    font-size: 1.5rem;
    font-weight: 300;
    color: var(--color-secondary);
    transition: transform var(--transition-base);
    flex-shrink: 0;
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-item.active .faq-question {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.faq-item.active .faq-icon {
    color: var(--color-white);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base) ease-out;
    background-color: var(--color-light);
}

.faq-item.active .faq-answer {
    max-height: 1000px;
    transition: max-height var(--transition-base) ease-in;
}

.faq-answer p,
.faq-answer ul {
    padding: var(--spacing-md);
    margin: 0;
}

.faq-answer ul {
    padding-left: var(--spacing-xl);
    padding-top: 0;
}

.faq-answer li {
    margin-bottom: var(--spacing-xs);
    color: var(--color-gray-dark);
}

.faq-answer strong {
    color: var(--color-primary-dark);
}

/* Sección Relación Comercial */
.section-relationship {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.relationship-box {
    background-color: rgba(255, 255, 255, 0.1);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    text-align: center;
    backdrop-filter: blur(10px);
}

.relationship-box h3 {
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
}

.relationship-box p {
    font-size: 1.125rem;
    line-height: 1.8;
}

/* Sección Contacto */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.contact-card {
    background-color: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: all var(--transition-base);
}

.contact-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.contact-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.contact-card h3 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.contact-card p {
    color: var(--color-gray-dark);
}

.contact-card a {
    color: var(--color-primary);
    font-weight: 600;
}

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

/* ============================================
   PÁGINAS LEGALES
   ============================================ */
.legal-page {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-light);
    min-height: calc(100vh - 200px);
}

.legal-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg);
    background-color: var(--color-white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
}

.legal-header h1 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.legal-date {
    color: var(--color-gray-dark);
    font-size: 0.95rem;
}

.legal-content {
    background-color: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
}

.legal-section {
    margin-bottom: var(--spacing-xl);
}

.legal-section h2 {
    color: var(--color-primary);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-xs);
    border-bottom: 2px solid var(--color-gray-light);
}

.legal-section h3 {
    color: var(--color-primary-dark);
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.legal-section ul,
.legal-section ol {
    margin-left: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.legal-section li {
    margin-bottom: var(--spacing-xs);
    color: var(--color-gray-dark);
}

.contact-box,
.example-box {
    background-color: var(--color-light);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--color-secondary);
    margin: var(--spacing-md) 0;
}

.legal-footer {
    text-align: center;
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background-color: var(--color-primary-dark);
    color: var(--color-white);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.footer-brand {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.footer-logo {
    width: 120px;
    height: auto;
    margin-bottom: var(--spacing-sm);
}

.footer-company {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.footer-subcompany {
    font-size: 0.875rem;
    color: var(--color-gray-light);
}

.footer-links h4,
.footer-contact h4 {
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
    font-size: 1.125rem;
}

.footer-links ul {
    list-style: none;
    margin: 0;
}

.footer-links li {
    margin-bottom: var(--spacing-xs);
}

.footer-links a {
    color: var(--color-gray-light);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-secondary);
}

.footer-contact p {
    color: var(--color-gray-light);
    margin-bottom: var(--spacing-xs);
    font-size: 0.95rem;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-md);
    text-align: center;
}

.footer-bottom p {
    color: var(--color-gray-light);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-xs);
}

.footer-disclaimer {
    font-size: 0.75rem;
    color: var(--color-gray);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

/* Tablets (768px y menos) */
@media (max-width: 768px) {
    /* Navegación móvil */
    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        right: -100%;
        width: 100%;
        max-width: 300px;
        height: calc(100vh - 70px);
        background-color: var(--color-white);
        flex-direction: column;
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-xl);
        transition: right var(--transition-base);
        overflow-y: auto;
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-menu li {
        width: 100%;
    }

    .nav-menu li a {
        display: block;
        padding: var(--spacing-sm);
    }

    /* Hero */
    .hero {
        min-height: 500px;
        padding: var(--spacing-xl) var(--spacing-md);
    }

    .hero-title {
        font-size: 2rem;
    }

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

    /* Secciones */
    .section {
        padding: var(--spacing-xl) 0;
    }

    .section-title {
        font-size: 2rem;
    }


    /* Calendar */
    .calendar-grid {
        grid-template-columns: 1fr;
    }

    /* Footer */
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-brand {
        align-items: center;
    }
}

/* Móviles (480px y menos) */
@media (max-width: 480px) {
    :root {
        --font-size-base: 14px;
    }

    .container {
        padding: 0 var(--spacing-sm);
    }

    .brand-name {
        font-size: 0.875rem;
    }

    .brand-subtitle {
        font-size: 0.65rem;
    }

    .logo {
        height: 40px;
    }

    .hero-title {
        font-size: 1.75rem;
    }

    .hero-subtitle {
        font-size: 0.95rem;
    }

    .hero-logo {
        width: 100px;
    }

    h1 { font-size: 2rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.25rem; }

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

    .btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.95rem;
    }
}

/* ============================================
   UTILIDADES
   ============================================ */
.text-center {
    text-align: center;
}

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }

/* ============================================
   ANIMACIONES
   ============================================ */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

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

/* Focus visible para accesibilidad */
*:focus-visible {
    outline: 2px solid var(--color-secondary);
    outline-offset: 2px;
}