/**
 * Estilos principales del sitio
 * Dra. Lily Martínez - Medicina de Rehabilitación Física
 */

/* ================================
   Cross-browser compatibility
   ================================ */

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    -webkit-text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
}

body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

/* Safari específico */
@supports (-webkit-appearance: none) {
    .form-input,
    .form-select {
        -webkit-appearance: none;
        border-radius: 0;
    }

    select.form-select {
        background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236D6672' d='M6 8L2 4h8z'/%3E%3C/svg%3E");
        background-repeat: no-repeat;
        background-position: right 12px center;
        padding-right: 32px;
    }
}

/* Firefox específico */
@-moz-document url-prefix() {
    .hero-img {
        image-rendering: optimizeQuality;
    }
}

/* Edge y IE11 */
@supports (-ms-ime-align: auto) {
    .hero-container {
        display: -ms-grid;
    }
}

/* ================================
   Tipografía
   ================================ */

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-text);
}

h1 { font-size: var(--font-size-5xl); }
h2 { font-size: var(--font-size-4xl); }
h3 { font-size: var(--font-size-3xl); }
h4 { font-size: var(--font-size-2xl); }
h5 { font-size: var(--font-size-xl); }
h6 { font-size: var(--font-size-lg); }

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

a {
    color: var(--color-primary);
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 2px;
    transition: var(--transition-base);
}

a:hover,
a:focus {
    color: var(--color-accent);
    text-decoration-thickness: 2px;
}

/* ================================
   Layout
   ================================ */

.section {
    padding: var(--spacing-3xl) 0;
}

.section-alt {
    background-color: var(--color-background-soft);
}

.section-pulmonary {
    background-color: #EDF4FA; /* Azul clínico suave */
}

.section-accent {
    background: linear-gradient(135deg, var(--color-accent-soft) 0%, var(--color-background-soft) 100%);
}

/* ================================
   Hero / Banner principal
   ================================ */

.hero {
    position: relative;
    padding: var(--spacing-3xl) 0 var(--spacing-2xl);
    background: linear-gradient(135deg, var(--color-background) 0%, var(--color-background-soft) 100%);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background: linear-gradient(135deg, var(--color-lavender) 0%, var(--color-accent-soft) 100%);
    opacity: 0.3;
    clip-path: polygon(20% 0%, 100% 0%, 100% 100%, 0% 100%);
    z-index: 0;
}

.hero-container {
    position: relative;
    z-index: 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.hero-content {
    max-width: 600px;
}

.hero-title {
    font-size: var(--font-size-5xl);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.1;
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-xl);
}

.hero-cta {
    display: inline-flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.hero-image {
    margin: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.hero-img {
    width: 100%;
    max-width: 480px;
    height: auto;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    object-fit: cover;
}

/* Imágenes responsivas genéricas */
img {
    max-width: 100%;
    height: auto;
}

/* Imágenes de logos e iconos */
.logo-img,
.social-link img,
.insurer-logo {
    width: auto;
    max-width: none;
}

/* Imágenes de background */
.hero-image img,
.card img {
    width: 100%;
    height: auto;
    object-fit: cover;
}

/* Lazy loading placeholder */
img[loading="lazy"] {
    background-color: var(--color-background-soft);
}

.hero-img-caption {
    margin-top: var(--spacing-md);
    text-align: center;
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

/* ================================
   Tarjetas
   ================================ */

.card {
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl) var(--spacing-lg);
    transition: var(--transition-base);
    height: 100%;
    display: flex;
    flex-direction: column;
    text-align: center;
}

.card > * {
    text-align: center;
}

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

.card-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.card-body {
    color: var(--color-text-muted);
    line-height: 1.6;
    flex-grow: 1;
}

.card-footer {
    margin-top: auto;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
}

.card-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    margin: 0 auto var(--spacing-md);
    border-radius: var(--border-radius-full);
    background-color: var(--color-background-soft);
}

/* Grid de tarjetas responsivo */
.card-grid {
    display: grid;
    gap: var(--spacing-lg);
}

/* Desktop (4 columnas) */
@media (min-width: 1025px) {
    .card-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Tablet landscape (3 columnas) */
@media (min-width: 769px) and (max-width: 1024px) {
    .card-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Tablet portrait (2 columnas) */
@media (min-width: 481px) and (max-width: 768px) {
    .card-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Móvil (1 columna) */
@media (max-width: 480px) {
    .card-grid {
        grid-template-columns: 1fr;
    }
}

/* ================================
   Grids
   ================================ */

.grid {
    display: grid;
    gap: var(--spacing-xl);
}

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

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 768px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-cta {
        justify-content: center;
    }

    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
}

/* Tablet (768px - 1024px) */
@media (min-width: 769px) and (max-width: 1024px) {
    h1 { font-size: var(--font-size-4xl); }
    h2 { font-size: var(--font-size-3xl); }

    .hero-title {
        font-size: var(--font-size-4xl);
    }

    .hero-cta {
        flex-direction: column;
        align-items: stretch;
    }

    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }

    .grid-4 {
        grid-template-columns: repeat(3, 1fr);
    }

    .section {
        padding: var(--spacing-2xl) 0;
    }
}

/* Móvil pequeño (320px - 480px) */
@media (max-width: 480px) {
    h1 { font-size: var(--font-size-3xl); }
    h2 { font-size: var(--font-size-2xl); }
    h3 { font-size: var(--font-size-xl); }

    .hero-title {
        font-size: var(--font-size-2xl);
        line-height: 1.2;
    }

    .hero-subtitle {
        font-size: var(--font-size-base);
    }

    .hero {
        padding: var(--spacing-xl) 0 var(--spacing-lg);
    }

    .hero-img {
        max-width: 100%;
        border-radius: var(--border-radius-md);
    }

    .btn-lg {
        padding: 12px 20px;
        font-size: var(--font-size-base);
    }

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

    .card {
        padding: var(--spacing-lg);
    }

    .card-title {
        font-size: var(--font-size-lg);
    }
}

/* Móvil mediano (481px - 767px) */
@media (min-width: 481px) and (max-width: 767px) {
    h1 { font-size: var(--font-size-4xl); }

    .hero-title {
        font-size: var(--font-size-3xl);
    }

    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Optimizaciones táctiles para móviles */
@media (max-width: 767px) {
    .btn,
    .form-input,
    .form-select,
    .form-textarea {
        min-height: 44px;
    }

    .form-input,
    .form-select,
    .form-textarea {
        padding: 12px 14px;
        font-size: 16px;
    }

    .card {
        margin: 0 var(--spacing-sm);
    }
}

/* Landscape en móviles */
@media (max-width: 767px) and (orientation: landscape) {
    .hero {
        padding: var(--spacing-md) 0;
    }

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

    .navbar-container {
        padding: 0.5rem var(--spacing-md);
    }
}

/* Tablet landscape */
@media (min-width: 769px) and (max-width: 1024px) and (orientation: landscape) {
    .hero {
        padding: var(--spacing-xl) 0;
    }

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

/* ================================
   Botones
   ================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 12px 24px;
    font-size: var(--font-size-base);
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--border-radius-md);
    border: none;
    cursor: pointer;
    transition: var(--transition-base);
}

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

.btn-primary:hover,
.btn-primary:focus {
    background-color: var(--color-primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-accent {
    background-color: var(--color-accent);
    color: var(--color-white);
}

.btn-accent:hover,
.btn-accent:focus {
    background-color: var(--color-accent-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background-color: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.btn-outline:hover,
.btn-outline:focus {
    background-color: var(--color-primary);
    color: var(--color-white);
}

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

.btn-lg {
    padding: 16px 32px;
    font-size: var(--font-size-lg);
}

.btn-sm {
    padding: 8px 16px;
    font-size: var(--font-size-sm);
}

/* ================================
   Footer
   ================================ */

.footer {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-3xl) 0 0;
}

.footer-container {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 2fr;
    gap: var(--spacing-2xl);
}

.footer-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: #fff;
}

/* Footer About Section */
.footer-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.footer-logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-lg);
    color: var(--color-accent);
    flex-shrink: 0;
}

.footer-badge {
    margin-bottom: var(--spacing-md);
}

.badge-specialty {
    display: inline-block;
    background: rgba(255, 255, 255, 0.15);
    color: rgba(255, 255, 255, 0.95);
    padding: 6px 14px;
    border-radius: var(--border-radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-description {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.7;
}

.footer-heading {
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--color-accent-soft);
}

.footer-text {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
}

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

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

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition-base);
}

.footer-links a:hover,
.footer-links a:focus {
    color: var(--color-white);
}

.footer-address {
    font-style: normal;
    color: rgba(255, 255, 255, 0.8);
}

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

.footer-address a {
    color: var(--color-white);
    text-decoration: none;
}

.footer-social {
    display: flex;
    gap: var(--spacing-md);
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--border-radius-full);
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--color-white);
    transition: var(--transition-base);
}

.social-link:hover,
.social-link:focus {
    background-color: var(--color-accent);
    transform: translateY(-2px);
}

.social-link img {
    width: 24px;
    height: 24px;
    object-fit: contain;
}

.footer-bottom {
    background-color: var(--color-primary-dark);
    padding: var(--spacing-lg) 0;
    margin-top: var(--spacing-2xl);
}

.footer-bottom-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-copyright {
    color: rgba(255, 255, 255, 0.4);
    font-size: var(--font-size-xs);
    margin: 0;
}

.footer-legal {
    color: rgba(255, 255, 255, 0.9);
    font-size: var(--font-size-sm);
    margin: 0;
}

.footer-legal a {
    color: rgba(255, 255, 255, 0.9);
    font-weight: 600;
    transition: color 0.2s ease;
}

.footer-legal a:hover {
    color: #fff;
    text-decoration: underline;
}
}

.footer-legal a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
}

.footer-legal a:hover,
.footer-legal a:focus {
    color: var(--color-white);
}

.footer-legal .separator {
    margin: 0 var(--spacing-sm);
}

@media (max-width: 992px) {
    .footer-container {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .footer-container {
        grid-template-columns: 1fr;
    }

    .footer-bottom-inner {
        flex-direction: column;
        text-align: center;
    }

    .footer-legal .separator {
        display: none;
    }
}

/* ================================
   Formularios
   ================================ */

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 12px 16px;
    font-size: var(--font-size-base);
    font-family: inherit;
    color: var(--color-text);
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    transition: var(--transition-base);
    /* Evita zoom en iOS */
    font-size: 16px;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(96, 47, 137, 0.1);
}

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

.form-help {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.form-error {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: #DC2626;
}

.form-check {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.form-check-input {
    margin-top: 4px;
    width: 20px;
    height: 20px;
    /* Tamaño táctil mínimo */
    min-width: 20px;
}

.form-check-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

/* Botones de formulario responsivos */
.form-actions {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.form-actions .btn {
    flex: 1;
    min-width: 120px;
}

@media (max-width: 767px) {
    .form-actions {
        flex-direction: column;
    }

    .form-actions .btn {
        width: 100%;
    }
}

/* ================================
   Alertas y notificaciones
   ================================ */

.alert {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius-md);
    margin-bottom: var(--spacing-lg);
}

.alert-success {
    background-color: #ECFDF5;
    border: 1px solid #10B981;
    color: #065F46;
}

.alert-error {
    background-color: #FEF2F2;
    border: 1px solid #DC2626;
    color: #7F1D1D;
}

.alert-warning {
    background-color: #FFFBEB;
    border: 1px solid #F59E0B;
    color: #78350F;
}

.alert-info {
    background-color: #EFF6FF;
    border: 1px solid #3B82F6;
    color: #1D4ED8;
}

/* ================================
   Loading / Skeleton
   ================================ */

.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
    border-radius: var(--border-radius-md);
}

@keyframes loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ================================
   Utilidades visuales
   ================================ */

.divider {
    height: 1px;
    background-color: var(--color-border);
    margin: var(--spacing-2xl) 0;
}

.divider-vertical {
    width: 1px;
    height: 100%;
    background-color: var(--color-border);
}

.badge {
    display: inline-block;
    padding: 4px 12px;
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: var(--border-radius-full);
}

.badge-primary {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.badge-accent {
    background-color: var(--color-accent);
    color: var(--color-white);
}

.badge-outline {
    background-color: transparent;
    color: var(--color-primary);
    border: 1px solid var(--color-primary);
}

.card-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: var(--border-radius-full);
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.badge-primary {
    background-color: var(--color-primary);
    color: var(--color-white);
}

/* ================================
   Iconos (SVG inline helpers)
   ================================ */

.icon {
    display: inline-block;
    vertical-align: middle;
}

.icon-sm { width: 16px; height: 16px; }
.icon-md { width: 20px; height: 20px; }
.icon-lg { width: 24px; height: 24px; }
.icon-xl { width: 32px; height: 32px; }

/* ================================
   Animaciones
   ================================ */

.fade-in {
    animation: fadeIn 0.3s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.slide-up {
    animation: slideUp 0.4s ease-out;
}

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