/* ============================================
   Responsive: Desktop (1200px+) | Tablet (768px-1199px) | Mobile (<768px)
   ============================================ */
:root {
    /* Colores principales - Oposalud */
    --primary-color: #00a8e8;
    --primary-hover: #0094cf;
    --primary-light: #e3f5fc;
    --cyan-bright: #00bfff;
    --secondary-color: #6c757d;
    --success-color: #198754;
    --danger-color: #dc3545;
    
    /* Colores de fondo */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-blue: #5fb3e5;
    --bg-blue-gradient: radial-gradient(circle at center, #8fd4f5 0%, #3a95d1 100%);
    
    /* Colores de texto */
    --text-primary: #333333;
    --text-secondary: #666666;
    --text-muted: #999999;
    --text-white: #ffffff;
    
    /* Bordes y sombras */
    --border-color: #d1d1d1;
    --border-radius-sm: 0.25rem;
    --border-radius-md: 0.375rem;
    --border-radius-lg: 0.5rem;
    
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12);
    --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.15);
    
    /* Espaciado compacto */
    --spacing-xs: 0.375rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    
    /* Tipografía */
    --font-family-base: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.813rem;
    --font-size-base: 0.875rem;
    --font-size-md: 0.938rem;
    --font-size-lg: 1rem;
    --font-size-xl: 1.25rem;
    --font-size-xxl: 1.75rem;
    
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* Transiciones */
    --transition-fast: 0.15s ease-in-out;
    --transition-base: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;
}

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

body {
    font-family: var(--font-family-base);
    font-size: var(--font-size-base);
    color: var(--text-primary);
    background: var(--bg-blue-gradient);
    line-height: 1.5;
    min-height: 100vh;
    overflow-x: hidden;
}

/* ============================================
   3. LAYOUT PRINCIPAL
   ============================================ */
.login-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
}
.login-wrapper .container-fluid {
    max-width: 100%;
    padding: 0;
}
.login-wrapper .row {
    margin: 0;
}
.login-form-column {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    position: relative;
    z-index: 2;
}
.login-content {
    width: 100%;
    max-width: 380px;
}
.login-image-column {
    position: relative;
    overflow: hidden;
    align-items: flex-end;
    justify-content: center;
    padding: 0;
}
.login-image-container {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    position: relative;
    padding: 0;
}

/* ============================================
   HEADER (IMAGEN SUPERIOR)
   ============================================ */
.page-header {
    animation: fadeInDown 0.6s ease-out;
    text-align: center;
}
.header-mobile{
    margin-bottom: var(--spacing-sm);
}
.header-image {
    height: auto;
    display: block;
    margin: 0 auto;
}
/* Header para tablet y desktop */
.header-tablet {
    max-width: 280px;
    margin-bottom: 20px;
}
/* Header para móvil */
.header-mobile {
    max-width: 100%;
    width: 100%;
}

/* ============================================
   CUADRO DEL FORMULARIO
   ============================================ */
.login-form-box {
    background: var(--bg-primary);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius-md);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.55);
    animation: fadeInUp 0.8s ease-out;
}

/* ============================================
   LOGO OPOSALUD FORMULARIO
   ============================================ */
.brand-logo {
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-xs);
    text-align: center;
}
.logo-image {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
}

/* ============================================
   FORMULARIO
   ============================================ */
.form-label {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    text-transform: uppercase;
    letter-spacing: 0.3px;
}
.input-group {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    overflow: hidden;
}
.input-group-text {
    background: var(--bg-secondary);
    border: none;
    border-right: 1px solid var(--border-color);
    padding: 0.375rem 0.5rem;
    color: var(--text-secondary);
}
.input-group-text i {
    font-size: 0.875rem;
}
.input-group .form-control {
    border: none;
    padding: 0.375rem 0.5rem;
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    height: auto;
}
.input-group .form-control::placeholder {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}
.input-group .form-control:focus {
    box-shadow: none;
    outline: none;
}
.input-group:focus-within {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.15rem rgba(0, 168, 232, 0.15);
}
/* Toggle Password Button */
.input-group .btn-outline-secondary {
    border: none;
    border-left: 1px solid var(--border-color);
    background: transparent;
    color: var(--text-secondary);
    padding: 0.375rem 0.5rem;
    transition: all var(--transition-fast);
}
.input-group .btn-outline-secondary:hover {
    background: var(--bg-secondary);
    color: var(--primary-color);
}
.input-group .btn-outline-secondary i {
    font-size: 0.875rem;
}
.form-check {
    padding-left: 0 !important;
    display: flex;
    align-items: center;
    margin-left: 0;
    padding: 0;
}
.form-check-input {
    width: 1rem;
    height: 1rem;
    border: 1px solid var(--border-color);
    cursor: pointer;
    margin-right: 0.5rem;
    margin-left: 0 !important;
    float: none;
    margin-top: 0 !important;
    flex-shrink: 0;
}
.form-check-input:checked {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}
.form-check-label {
    cursor: pointer;
    color: var(--text-secondary);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-normal);
    margin-bottom: 0;
    padding-left: 0;
}
.btn-login {
    padding: 0.5rem 1rem;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    border-radius: var(--border-radius-sm);
    background: var(--primary-color);
    border: none;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all var(--transition-base);
    margin-top: var(--spacing-xs);
}
.btn-login:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}
.btn-login:active {
    transform: translateY(0);
}
.forgot-password-link {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}
.forgot-password-link:hover {
    color: var(--primary-color);
    text-decoration: underline;
}

/* ============================================
   BANDA DE COLORES
   ============================================ */
.color-band {
    padding: 0 20px;
    display: flex;
    height: 7px;
    overflow: hidden;
    background-color: transparent;
}
.color-band span {
    flex: 1;
    display: block;
}
.band-blue {background-color: #0066cc;}
.band-cyan {background-color: #00bfff;}
.band-orange {background-color: #ff9933;}
.band-pink {background-color: #ff6699;}
.band-green {background-color: #66cc99;}

/* ============================================
   INFORMACIÓN DE SEGURIDAD
   ============================================ */
.security-info {
    margin-top: var(--spacing-md);
    animation: fadeIn 1s ease-out;
}
.ssl-info {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: var(--font-size-xs);
    color: var(--text-white);
    margin-bottom: var(--spacing-xs);
    padding: 0;
}
.ssl-info i {
    font-size: 0.75rem;
    color: #213b56;
}
.ip-info {
    font-size: 0.688rem;
    color: var(--text-white);
    text-align: center;
    line-height: 1.5;
    padding: 0;
    margin-bottom: 0;
}
.ip-info strong {
    font-weight: var(--font-weight-bold);
    color: #213b56;
}

/* ============================================
   IMAGEN PRINCIPAL
   ============================================ */
.main-image {
    max-width: 85%;
    width: auto;
    height: auto;
    max-height: 95vh;
    display: block;
    animation: fadeIn 0.8s ease-out;
    object-fit: contain;
    object-position: bottom center;
    margin-bottom: 0;
    filter: drop-shadow(0 8px 24px rgba(0, 0, 0, 0.3));
}
/* ============================================
   ANIMACIONES
   ============================================ */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

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

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

/* ========== TABLET (768px - 1199px) ========== */
@media (min-width: 768px) and (max-width: 1199px) {
    .login-wrapper .container-fluid {
        padding: 0;
        max-width: 100%;
    }
    .login-form-column {
        padding: var(--spacing-xl);
    }
    .login-content {
        max-width: 480px;
    }
    .page-title {
        font-size: 1.5rem;
    }
    .login-form-box {
        padding: var(--spacing-lg);
    }
}

/* ========== MOBILE (<768px) ========== */
@media (max-width: 767px) {
    :root {
        --font-size-xxl: 1.5rem;
        --font-size-xl: 1.125rem;
        --spacing-xl: 1.5rem;
        --spacing-lg: 1rem;
    }
    body {
        background: var(--bg-blue);
    }
    .login-wrapper {
        padding-left: 5px;
        padding-right: 5px;
    }
    .login-form-column {
        padding: 0;
    }
    .login-content {
        max-width: 100%;
    }
    .header-mobile {
        max-width: 100%;
    }
    .login-form-box {
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-md);
    }
    .brand-logo {
        margin-bottom: var(--spacing-md);
        padding-bottom: var(--spacing-sm);
    }
    .brand-logo i {
        font-size: 1.5rem;
    }
    .brand-name,
    .brand-suffix {
        font-size: 1.25rem;
    }
    .form-label {
        font-size: 0.688rem;
    }
    .input-group .form-control {
        font-size: var(--font-size-xs);
        padding: 0.5rem;
    }
    .input-group-text {
        padding: 0.5rem;
    }
    .btn-login {
        padding: 0.625rem 1rem;
        font-size: var(--font-size-sm);
    }
    .form-check-label {
        font-size: var(--font-size-xs);
    }
    .forgot-password-link {
        font-size: var(--font-size-xs);
    }
    .security-info {
        margin-top: var(--spacing-md);
    }
    .ssl-info,
    .ip-info {
        font-size: 0.688rem;
    }
}

/* ========== DESKTOP LARGE (1200px+) ========== */
@media (min-width: 1200px) {
    .login-form-box {
        padding: var(--spacing-lg) var(--spacing-xl);
    }
    .main-image {
        max-width: 90%;
        width: auto;
        max-height: 100vh;
    }
}

/* ========== EXTRA LARGE SCREENS (1400px+) ========== */
@media (min-width: 1400px) {
    .login-content {
        max-width: 480px;
    }
}

/* ============================================
   ESTADOS Y UTILIDADES
   ============================================ */
/* Loading state */
.btn-loading {
    display: inline-flex !important;
    align-items: center;
    justify-content: center;
}
/* Feedback messages */
.invalid-feedback {
    display: none;
    font-size: var(--font-size-xs);
    color: var(--danger-color);
    margin-top: 0.25rem;
}
.form-control.is-invalid ~ .invalid-feedback,
.input-group.is-invalid ~ .invalid-feedback {
    display: block;
}
/* Validación para input groups */
.input-group.is-invalid {
    border-color: var(--danger-color);
}
.input-group.is-valid {
    border-color: var(--success-color);
}
/* Alerts */
.alert {
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
}
.alert i {
    font-size: 1rem;
}
/* Focus visible para accesibilidad */
*:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}
/* Reducción de movimiento para accesibilidad */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ============================================
   SCROLL PERSONALIZADO
   ============================================ */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}
::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: var(--border-radius-sm);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--primary-hover);
}