/* Estilos para Autenticación - Login, Registro, Recover */
/* Grupo 2: UI Moderna y Responsive */

/* Reset y Variables */
* {
    box-sizing: border-box;
}

:root {
    --primary-color: #1976d2;
    --primary-dark: #115293;
    --primary-light: #64b5f6;
    --success-color: #4caf50;
    --error-color: #f44336;
    --warning-color: #ff9800;
    --text-primary: #212121;
    --text-secondary: #757575;
    --background: #f5f7fa;
    --card-background: #ffffff;
    --border-color: #e0e0e0;
    --shadow: 0 2px 8px rgba(0,0,0,0.1);
    --shadow-hover: 0 4px 16px rgba(0,0,0,0.15);
    --border-radius: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Layout de Autenticación */
.auth-background {
    min-height: 100vh;
    background: linear-gradient(135deg, var(--primary-color) 0%, #0d47a1 100%);
    background-size: cover;
    background-attachment: fixed;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.auth-container {
    width: 100%;
    max-width: 480px;
    margin: auto;
}

/* Logo */
.auth-logo {
    text-align: center;
    margin-bottom: 2rem;
    color: white;
}

.auth-logo h1 {
    font-size: 2.5rem;
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.auth-logo p {
    font-size: 1rem;
    opacity: 0.9;
    margin: 0.5rem 0 0;
}

/* Card de Autenticación */
.auth-card {
    background: var(--card-background);
    border-radius: var(--border-radius);
    padding: 2.5rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.auth-card:hover {
    box-shadow: var(--shadow-hover);
}

.auth-header {
    text-align: center;
    margin-bottom: 2rem;
}

.auth-header h2 {
    margin: 0 0 0.5rem;
    font-size: 1.8rem;
    color: var(--text-primary);
}

.auth-header p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Formulario */
.auth-form {
    width: 100%;
}

.form-group {
    margin-bottom: 1.5rem;
    position: relative;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.form-group input[type="email"],
.form-group input[type="text"],
.form-group input[type="tel"],
.form-group input[type="password"] {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: var(--transition);
    background: var(--card-background);
    color: #212121 !important;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(25, 118, 210, 0.1);
}

/* Estados de validación */
.form-group input.valid {
    border-color: var(--success-color);
}

.form-group input.invalid {
    border-color: var(--error-color);
}

.form-group input:disabled {
    background: #f5f5f5;
    cursor: not-allowed;
}

/* Hint debajo del campo */
.field-hint {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
    line-height: 1.4;
}

.field-hint .info-link {
    color: var(--primary-color);
    text-decoration: none;
}

.field-hint .info-link:hover {
    text-decoration: underline;
}

/* Mensajes de error */
.error-message {
    color: var(--error-color);
    font-size: 0.85rem;
    margin-top: 0.25rem;
    font-weight: 500;
}

/* Checkbox Group */
.checkbox-group {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.checkbox-group input[type="checkbox"] {
    margin-top: 0.25rem;
    width: auto;
}

.checkbox-group label {
    margin-bottom: 0;
    font-weight: normal;
    cursor: pointer;
    color: var(--text-secondary);
}

.checkbox-group label a {
    color: var(--primary-color);
    text-decoration: none;
}

.checkbox-group label a:hover {
    text-decoration: underline;
}

/* Botones */
.btn-primary {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 0.875rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    position: relative;
    overflow: hidden;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(25, 118, 210, 0.3);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 2px 4px rgba(25, 118, 210, 0.3);
}

.btn-primary:disabled {
    background: var(--text-secondary);
    cursor: not-allowed;
    transform: none;
}

.btn-block {
    width: 100%;
}

/* Estado de loading en botón */
.btn-primary.loading .btn-text {
    opacity: 0;
}

.btn-loader {
    display: none;
    font-size: 1.2rem;
}

.btn-primary.loading .btn-loader {
    display: inline;
    position: absolute;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Mensajes del formulario */
.form-messages {
    margin-top: 1.5rem;
}

.alert {
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    font-weight: 500;
    text-align: center;
}

.alert-success {
    background: rgba(76, 175, 80, 0.1);
    color: var(--success-color);
    border: 1px solid rgba(76, 175, 80, 0.2);
}

.alert-error {
    background: rgba(244, 67, 54, 0.1);
    color: var(--error-color);
    border: 1px solid rgba(244, 67, 54, 0.2);
}

.alert-warning {
    background: rgba(255, 152, 0, 0.1);
    color: var(--warning-color);
    border: 1px solid rgba(255, 152, 0, 0.2);
}

.alert-info {
    background: rgba(25, 118, 210, 0.1);
    color: var(--primary-color);
    border: 1px solid rgba(25, 118, 210, 0.2);
}

/* Links de autenticación */
.auth-links {
    text-align: center;
    margin-top: 1.5rem;
}

.auth-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
}

.auth-link:hover {
    text-decoration: underline;
    color: var(--primary-dark);
}

.divider {
    color: var(--text-secondary);
    margin: 0 0.5rem;
}

/* Footer */
.auth-footer {
    text-align: center;
    margin-top: 2rem;
    color: white;
    opacity: 0.8;
    font-size: 0.9rem;
}

.auth-footer p {
    margin: 0.25rem 0;
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.loading-overlay.active {
    opacity: 1;
    visibility: visible;
}

.loading-spinner {
    background: var(--card-background);
    padding: 2rem 3rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-hover);
    text-align: center;
    font-size: 1.2rem;
    color: var(--text-primary);
    font-weight: 500;
}

/* Iconos de validación */
.form-group {
    position: relative;
}

.form-group input.valid ~ .validation-icon::after {
    content: "✓";
    position: absolute;
    right: 1rem;
    top: 2.5rem;
    color: var(--success-color);
    font-weight: bold;
}

.form-group input.invalid ~ .validation-icon::after {
    content: "✗";
    position: absolute;
    right: 1rem;
    top: 2.5rem;
    color: var(--error-color);
    font-weight: bold;
}

/* Responsive Tablet */
@media (max-width: 768px) {
    .auth-card {
        padding: 2rem;
    }
    
    .auth-logo h1 {
        font-size: 2rem;
    }
    
    .auth-header h2 {
        font-size: 1.5rem;
    }
}

/* Responsive Mobile */
@media (max-width: 480px) {
    .auth-container {
        max-width: 100%;
        margin: 0;
    }
    
    .auth-background {
        padding: 0;
    }
    
    .auth-card {
        padding: 1.5rem;
        border-radius: 0;
        min-height: 100vh;
        display: flex;
        flex-direction: column;
        justify-content: center;
        box-shadow: none;
    }
    
    .auth-logo h1 {
        font-size: 1.8rem;
    }
    
    .form-group input {
        padding: 0.75rem;
        font-size: 1rem;
    }
    
    .btn-primary {
        padding: 0.75rem 1rem;
    }
}

/* Animaciones suaves */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.auth-card {
    animation: fadeIn 0.4s ease-out;
}

/* Accesibilidad */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* High contrast mode */
@media (prefers-contrast: high) {
    :root {
        --primary-color: #0044cc;
        --error-color: #e00000;
        --success-color: #008000;
    }
}