/* ==========================================================================
   VARIABLES GLOBALES
   ========================================================================== */
:root {
    /* Colores principales - se coordinan con dashboard.css */
    --primary-color: #303498;
    --primary-light: #5d61c2;
    --primary-dark: #252780;
    --accent-color: #ff0000;
    --error-color: #ea4335;
    --success-color: #34a853;
    --warning-color: #fbbc05;
    --info-color: #4285f4;
    
    /* Colores de roles (para consistencia) */
    --role-root: #d32f2f;
    --role-admin: #7b1fa2;
    --role-subdistribuidor: #0288d1;
    --role-vendedor: #388e3c;
    
    /* Colores de interfaz */
    --text-color: #333333;
    --text-light: #666666;
    --border-color: #dde2e5;
    --input-bg: #f7f9fc;
    --bg-color: #f9fafc;
    --card-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
    
    /* Dimensiones y espaciado */
    --border-radius: 10px;
    --border-radius-sm: 6px;
    --transition-speed: 0.3s;
}

/* ==========================================================================
   ESTILOS BASE
   ========================================================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}

body {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    padding: 20px;
    background-color: var(--bg-color);
    color: var(--text-color);
    font-size: 16px;
    line-height: 1.5;
}

.container {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ==========================================================================
   ESTILOS PARA PÁGINA DE LOGIN
   ========================================================================== */
.login-form {
    background-color: #fff;
    border-radius: var(--border-radius);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    padding: 40px;
    width: 100%;
    max-width: 420px;
    position: relative;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.login-form:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
}

.login-form::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(to right, var(--primary-color), var(--primary-light));
}

.logo-container {
    text-align: center;
    margin-bottom: 2.5rem;
}

.logo {
    max-width: 160px;
    height: auto;
    display: block;
    margin: 0 auto;
    transition: transform 0.3s ease;
}

.logo:hover {
    transform: scale(1.05);
}

/* Mensajes de error y éxito */
.error-message, .success-message {
    padding: 15px;
    border-radius: var(--border-radius-sm);
    margin-bottom: 25px;
    font-size: 0.95rem;
    display: none;
    align-items: center;
    transform: translateY(0);
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.error-message {
    background-color: rgba(234, 67, 53, 0.1);
    color: var(--error-color);
    border-left: 3px solid var(--error-color);
}

.success-message {
    background-color: rgba(52, 168, 83, 0.1);
    color: var(--success-color);
    border-left: 3px solid var(--success-color);
}

.error-message:not(:empty), .success-message:not(:empty) {
    display: flex;
    animation: slideDown 0.3s ease forwards;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Campos de formulario */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-color);
}

.form-group input {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    background-color: var(--input-bg);
    color: var(--text-color);
    font-size: 1rem;
    transition: all 0.25s ease;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05) inset;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(48, 52, 152, 0.15);
    background-color: #fff;
    transform: translateY(-2px);
}

/* Botones */
.login-btn {
    width: 100%;
    padding: 14px;
    border: none;
    border-radius: var(--border-radius-sm);
    background: linear-gradient(to right, var(--primary-color), var(--primary-light));
    color: white;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    box-shadow: 0 4px 15px rgba(48, 52, 152, 0.15);
    margin-top: 10px;
}

.login-btn:hover {
    background: linear-gradient(to right, var(--primary-dark), var(--primary-color));
    transform: translateY(-2px);
    box-shadow: 0 7px 15px rgba(48, 52, 152, 0.25);
}

.login-btn:active {
    transform: translateY(0);
}

.login-btn.loading {
    pointer-events: none;
    opacity: 0.7;
}

.login-btn.loading::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.8s infinite ease-out;
}

/* Animación de carga */
@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ==========================================================================
   ESTILOS PARA PÁGINA DE VERIFICACIÓN/REDIRECT
   ========================================================================== */
.dashboard {
    text-align: center;
    padding: 2rem;
}

.user-info {
    margin-bottom: 2rem;
    color: var(--text-color);
}

.user-role {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.85rem;
    margin-top: 8px;
    background-color: var(--primary-color);
    color: white;
}

.logout-btn {
    background: linear-gradient(to right, var(--accent-color), #ff3333);
    transition: all 0.3s ease;
}

.logout-btn:hover {
    background: linear-gradient(to right, #db0000, var(--accent-color));
    transform: translateY(-2px);
}

.access-error {
    margin: 20px 0;
    padding: 15px;
    background-color: rgba(255, 0, 0, 0.08);
    border-left: 3px solid var(--error-color);
    border-radius: var(--border-radius-sm);
    color: #d32f2f;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    text-align: left;
}

.spinner-overlay {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 20px 0;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

/* ==========================================================================
   MEDIA QUERIES PARA RESPONSIVIDAD
   ========================================================================== */
@media (max-width: 480px) {
    .login-form {
        padding: 30px 25px;
        margin: 15px;
    }
    
    .logo {
        max-width: 150px;
    }
    
    .dashboard {
        padding: 1.5rem;
    }
}