/**
 * Estilos Principales - Salud Quillota
 * Uso: Copiar a /css/estilos.css en tu hosting
 * Última actualización: 2024
 */

/* ========================================
   VARIABLES Y RESET
   ======================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colores principales */
    --primary: #105784;
    --primary-light: #1a7aaa;
    --primary-dark: #0d3f5c;
    --accent: #00a8cc;
    --accent-light: #00c4e8;
    --accent-dark: #0081a3;

    /* Colores de estado */
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;

    /* Grises */
    --neutral-50: #f9fafb;
    --neutral-100: #f3f4f6;
    --neutral-200: #e5e7eb;
    --neutral-300: #d1d5db;
    --neutral-400: #9ca3af;
    --neutral-500: #6b7280;
    --neutral-600: #4b5563;
    --neutral-700: #374151;
    --neutral-800: #1f2937;
    --neutral-900: #111827;

    /* Fondo y texto */
    --bg-body: #ffffff;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --border-color: #e5e7eb;

    /* Espaciado base */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;

    /* Sombras */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);

    /* Transiciones */
    --transition: all 0.3s ease;
    --transition-fast: all 0.15s ease;
}

/* Tema oscuro - Auto detect */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --bg-body: #0f172a;
        --text-primary: #f1f5f9;
        --text-secondary: #cbd5e1;
        --border-color: #334155;
        --neutral-50: #1e293b;
        --neutral-100: #1e293b;
        --neutral-600: #94a3b8;
        --neutral-700: #64748b;
        --neutral-800: #475569;
        --neutral-900: #0f1728;
    }
}

/* Tema oscuro - Manual toggle */
:root[data-theme="dark"] {
    --bg-body: #0f172a;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --border-color: #334155;
    --neutral-50: #1e293b;
    --neutral-100: #1e293b;
    --neutral-600: #94a3b8;
    --neutral-700: #64748b;
    --neutral-800: #475569;
    --neutral-900: #0f1728;
}

/* ========================================
   ESTILOS GLOBALES
   ======================================== */

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
                 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
                 sans-serif;
    background: var(--bg-body);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-size: 1rem;
}

/* ========================================
   TIPOGRAFÍA
   ======================================== */

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

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-md);
    color: var(--text-secondary);
    line-height: 1.8;
}

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

a:hover {
    color: var(--accent);
    text-decoration: underline;
}

/* ========================================
   ENCABEZADO
   ======================================== */

header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: white;
    padding: 0;
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 100;
}

/* Top Bar */
.top-bar {
    background-color: rgba(255, 255, 255, 0.1);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    padding: var(--spacing-sm) 0;
    font-size: 0.875rem;
}

.top-bar-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.top-links {
    display: flex;
    gap: var(--spacing-lg);
    list-style: none;
}

.top-links a {
    color: white;
    text-decoration: none;
    transition: opacity 0.3s ease;
}

.top-links a:hover {
    opacity: 0.8;
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
    list-style: none;
}

.social-links a {
    color: white;
    font-size: 1.25rem;
    transition: transform 0.3s ease;
}

.social-links a:hover {
    transform: translateY(-2px);
}

/* Main Navbar */
.navbar {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-lg);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    color: white;
    font-weight: 700;
    font-size: 1.25rem;
    transition: opacity 0.3s ease;
}

.logo:hover {
    opacity: 0.9;
}

.logo-image {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.5rem;
}

/* Nav */
nav ul {
    list-style: none;
    display: flex;
    gap: var(--spacing-sm);
}

nav li {
    position: relative;
}

nav a {
    color: white;
    text-decoration: none;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 6px;
    transition: background-color 0.3s ease;
    display: block;
}

nav a:hover {
    background-color: rgba(255, 255, 255, 0.15);
}

.nav-label {
    font-size: 0.75rem;
    opacity: 0.9;
    display: block;
    margin-top: var(--spacing-xs);
}

/* ========================================
   HERO SECTION
   ======================================== */

.hero {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: white;
    padding: var(--spacing-3xl) var(--spacing-lg);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
    color: white;
    line-height: 1.2;
}

.hero p {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-2xl);
    opacity: 0.95;
    color: rgba(255, 255, 255, 0.95);
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* ========================================
   BOTONES
   ======================================== */

.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: 1rem;
    text-align: center;
}

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

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

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

.btn-secondary:hover {
    background-color: var(--neutral-50);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

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

/* ========================================
   CONTENEDOR
   ======================================== */

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ========================================
   SECCIONES
   ======================================== */

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

section.alt {
    background-color: var(--neutral-50);
}

@media (prefers-color-scheme: dark) {
    section.alt:not([data-theme="light"]) {
        background-color: #1e293b;
    }
}

:root[data-theme="dark"] section.alt {
    background-color: #1e293b;
}

/* ========================================
   GRILLAS DE TARJETAS
   ======================================== */

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-2xl);
    margin-top: var(--spacing-3xl);
}

.card {
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

@media (prefers-color-scheme: dark) {
    .card:not([data-theme="light"]) {
        background: #1e293b;
    }
}

:root[data-theme="dark"] .card {
    background: #1e293b;
}

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

.card-icon {
    width: 100%;
    height: 120px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
}

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

.card-content h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--primary);
    font-size: 1.25rem;
}

.card-content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 0;
}

/* ========================================
   GRILLA DE INFO
   ======================================== */

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-2xl);
    margin-top: var(--spacing-2xl);
}

.info-item {
    padding: var(--spacing-lg);
    background: white;
    border-radius: 8px;
    border-left: 4px solid var(--primary);
    display: flex;
    gap: var(--spacing-md);
}

@media (prefers-color-scheme: dark) {
    .info-item:not([data-theme="light"]) {
        background: #1e293b;
    }
}

:root[data-theme="dark"] .info-item {
    background: #1e293b;
}

.info-icon {
    font-size: 1.75rem;
    color: var(--primary);
    flex-shrink: 0;
    margin-top: var(--spacing-xs);
}

.info-content h4 {
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
    font-size: 1rem;
}

.info-content p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 0;
}

/* ========================================
   FORMULARIOS
   ======================================== */

form {
    max-width: 600px;
    margin: var(--spacing-2xl) auto 0;
}

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

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

input[type="text"],
input[type="email"],
input[type="tel"],
textarea {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-family: inherit;
    font-size: 1rem;
    background: white;
    color: var(--text-primary);
    transition: var(--transition-fast);
}

@media (prefers-color-scheme: dark) {
    input[type="text"]:not([data-theme="light"]),
    input[type="email"]:not([data-theme="light"]),
    input[type="tel"]:not([data-theme="light"]),
    textarea:not([data-theme="light"]) {
        background: #1e293b;
        border-color: #334155;
    }
}

:root[data-theme="dark"] input[type="text"],
:root[data-theme="dark"] input[type="email"],
:root[data-theme="dark"] input[type="tel"],
:root[data-theme="dark"] textarea {
    background: #1e293b;
    border-color: #334155;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="tel"]:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(16, 87, 132, 0.1);
}

textarea {
    resize: vertical;
    min-height: 150px;
}

/* ========================================
   FOOTER
   ======================================== */

footer {
    background-color: var(--neutral-900);
    color: white;
    padding: var(--spacing-3xl) var(--spacing-lg) var(--spacing-md);
}

@media (prefers-color-scheme: dark) {
    footer:not([data-theme="light"]) {
        background-color: #0f1728;
    }
}

:root[data-theme="dark"] footer {
    background-color: #0f1728;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

footer h4 {
    margin-bottom: var(--spacing-md);
    font-size: 1rem;
    color: var(--accent);
}

footer ul {
    list-style: none;
}

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

footer a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s ease;
}

footer a:hover {
    color: white;
}

.contact-info {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.contact-info-icon {
    font-size: 1.25rem;
    flex-shrink: 0;
    margin-top: var(--spacing-xs);
}

.footer-divider {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-lg);
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

/* ========================================
   UTILIDADES
   ======================================== */

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

.text-secondary {
    color: var(--text-secondary);
}

/* Margin */
.mt-1 { margin-top: var(--spacing-md); }
.mt-2 { margin-top: var(--spacing-xl); }
.mt-3 { margin-top: var(--spacing-2xl); }
.mt-4 { margin-top: var(--spacing-3xl); }

.mb-1 { margin-bottom: var(--spacing-md); }
.mb-2 { margin-bottom: var(--spacing-xl); }
.mb-3 { margin-bottom: var(--spacing-2xl); }
.mb-4 { margin-bottom: var(--spacing-3xl); }

.mx-auto { margin-left: auto; margin-right: auto; }

/* Padding */
.p-md { padding: var(--spacing-md); }
.p-lg { padding: var(--spacing-lg); }

/* Display */
.d-none { display: none; }
.d-flex { display: flex; }
.d-grid { display: grid; }

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

@media (max-width: 768px) {
    h1 {
        font-size: 1.875rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    .navbar {
        flex-direction: column;
        gap: var(--spacing-md);
        padding: var(--spacing-md) var(--spacing-md);
    }

    nav ul {
        flex-direction: column;
        width: 100%;
        gap: 0;
    }

    nav a {
        padding: var(--spacing-sm) 0;
        border-radius: 0;
    }

    .hero {
        padding: var(--spacing-2xl) var(--spacing-md);
    }

    .hero h1 {
        font-size: 1.5rem;
    }

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

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

    .btn {
        width: 100%;
    }

    .top-bar {
        display: none !important;
    }

    .cards-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

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

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

    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
}

@media (max-width: 480px) {
    :root {
        font-size: 0.9rem;
    }

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

    .logo {
        font-size: 1rem;
    }

    .logo-image {
        width: 40px;
        height: 40px;
    }

    nav a {
        padding: var(--spacing-xs);
        font-size: 0.9rem;
    }

    .hero h1 {
        font-size: 1.25rem;
    }

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

/* ========================================
   ACCESIBILIDAD
   ======================================== */

@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
    }
}

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

/* Print styles */
@media print {
    header,
    footer,
    .hero-buttons {
        display: none;
    }

    body {
        background: white;
        color: black;
    }

    a {
        text-decoration: underline;
    }
}