/* ===== VARIABLES CSS ===== */
:root {
    /* Colores principales basados en Medical Integral */
    --primary-blue: #0056b3;
    --secondary-blue: #007bff;
    --light-blue: #17a2b8;
    --success-green: #28a745;
    --danger-red: #dc3545;
    --warning-orange: #ffc107;
    
    /* Aliases para compatibilidad */
    --primary-color: #0056b3;
    --border-color: #dee2e6;
    --border-light: #f1f1f1;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --info-color: #17a2b8;
    --info-background: #d1ecf1;
    --info-border: #bee5eb;
    --text-dark: #343a40;
    --light-gray: #f8f9fa;
    
    /* Grises extendidos */
    --gray-50: #fafafa;
    --gray-100: #f8f9fa;
    --gray-200: #e9ecef;
    --gray-300: #dee2e6;
    --gray-400: #ced4da;
    --gray-500: #6c757d;
    --gray-600: #495057;
    --gray-700: #343a40;
    --gray-800: #212529;
    
    /* Colores base */
    --white: #ffffff;
    --black: #000000;
    --light-bg: #f4f4f4;
    
    /* Tipografía extendida */
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-size-xs: 11px;
    --font-size-sm: 12px;
    --font-size-base: 14px;
    --font-size-lg: 16px;
    --line-height: 1.5;
}

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

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height);
    color: var(--gray-800);
    background-color: var(--light-bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ===== HEADER PRINCIPAL ===== */
.main-header {
    background-color: var(--white);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

/* Nivel superior del header */
.header-top {
    background-color: var(--white);
    border-bottom: 1px solid var(--gray-200);
    padding: 10px 0;
}

/* Nivel inferior del header */
.header-bottom {
    background-color: var(--light-blue);
    padding: 8px 0;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Contenedor específico para navegación centrada */
.header-bottom .header-container {
    justify-content: center;
}

/* ===== LOGO Y NAVEGACIÓN ===== */
.logo-section {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo {
    height: 75px;
    width: auto;
    max-width: none;
    object-fit: contain;
}

.logo-text {
    font-size: 36px;
    font-weight: 700;
    color: var(--primary-blue);
    letter-spacing: -0.5px;
}

/* Sección de usuario */
.user-section {
    display: flex;
    align-items: center;
    gap: 15px;
}

.user-name {
    color: var(--gray-700);
    font-weight: 500;
}

.logout-form {
    display: inline;
    margin: 0;
}

/* Navegación principal */
.main-nav {
    display: flex;
    gap: 0;
    justify-content: center;
    width: 100%;
}

.main-nav a {
    color: var(--white);
    text-decoration: none;
    padding: 10px 20px;
    display: block;
    font-weight: 500;
    transition: background-color 0.3s ease;
}

.main-nav a:hover,
.main-nav a.active {
    background-color: rgba(255, 255, 255, 0.2);
}

/* ===== CONTENIDO PRINCIPAL ===== */
.main-content {
    flex: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    width: 100%;
}

/* ===== CONTENEDORES ===== */
.container {
    background-color: var(--white);
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    margin-bottom: 20px;
}

.container-sm {
    max-width: 400px;
    margin: 40px auto;
}

.container-md {
    max-width: 800px;
    margin: 20px auto;
}

/* ===== TÍTULOS ===== */
h1 {
    color: var(--primary-blue);
    font-size: 28px;
    font-weight: 600;
    text-align: center;
    margin-bottom: 25px;
}

h2 {
    color: var(--gray-700);
    font-size: 20px;
    font-weight: 600;
    margin: 20px 0 15px 0;
    border-bottom: 1px solid var(--gray-200);
    padding-bottom: 8px;
}

h3 {
    color: var(--gray-700);
    font-size: 16px;
    font-weight: 600;
    margin: 15px 0 10px 0;
}

/* ===== MENSAJES DEL SISTEMA ===== */
.messages-container {
    margin-bottom: 20px;
}

.message {
    padding: 12px 20px;
    border-radius: 4px;
    margin-bottom: 10px;
    border: 1px solid transparent;
    font-weight: 500;
}

.message-success {
    background-color: #d4edda;
    color: #155724;
    border-color: #c3e6cb;
}

.message-error {
    background-color: #f8d7da;
    color: #721c24;
    border-color: #f5c6cb;
}

.message-info {
    background-color: #d1ecf1;
    color: #0c5460;
    border-color: #bee5eb;
}

.message-warning {
    background-color: #fff3cd;
    color: #856404;
    border-color: #ffeeba;
}

/* ===== FOOTER ===== */
.main-footer {
    background-color: var(--gray-700);
    color: var(--gray-200);
    text-align: center;
    padding: 20px 0;
    margin-top: auto;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .header-container {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
    
    .user-section {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .main-nav {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .main-content {
        padding: 15px;
    }
    
    .container {
        padding: 20px;
    }
    
    h1 {
        font-size: 24px;
    }
}

/* ===== ESTILOS ESPECÍFICOS PARA PÁGINA DE CAMBIO DE CONTRASEÑA ===== */
/* Estos estilos solo se aplican cuando el body tiene la clase específica */
body.password-change-page .main-content {
    max-width: 650px !important;
    padding: 20px !important;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: calc(100vh - 200px) !important;
}

body.password-change-page .password-change-container {
    background-color: var(--white);
    max-width: 520px !important;
    width: 100% !important;
    margin: 30px auto !important;
    min-height: 450px !important;
    padding: 40px !important;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    box-sizing: border-box !important;
}

body.password-change-page h1 {
    margin-bottom: 30px !important;
    font-size: 24px !important;
    text-align: center;
    color: var(--primary-blue);
}

body.password-change-page .form-section {
    margin-bottom: 25px !important;
}

body.password-change-page .back-link-container {
    margin-top: 30px !important;
    text-align: center;
}