/* ============================================
   LOGIN PAGE - ORIENTADOS COLOMBIA CRM
   ============================================ */

:root {
    --color-primary:      #020048;
    --color-primary-dark: #010030;
    --color-secondary:    #020070;
    --color-accent:       #4a36ca;
    --color-base:         #ffffff;
    --color-contrast:     #232d3f;
    --color-tertiary:     #ebebf8;
    --color-text-muted:   #64748b;
    --color-border:       #e2e8f0;
    --color-error:        #dc2626;
    --gradient-primary:   linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    --shadow-accent:      0 4px 20px rgba(74,54,202,0.28);
}

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

body {
    font-family: 'Inter', sans-serif;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 55%, var(--color-accent) 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

/* ============================================
   CONTAINER PRINCIPAL
   ============================================ */

.login-container {
    background: white;
    border-radius: 24px;
    padding: 48px;
    width: 100%;
    max-width: 440px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    animation: fadeIn 0.5s ease;
}

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

/* ============================================
   LOGO Y ENCABEZADO
   ============================================ */

.logo {
    text-align: center;
    margin-bottom: 32px;
}

.logo img {
    height: 80px;
    margin-bottom: 16px;
    border-radius: 50%;
    background: var(--color-primary);
    padding: 10px;
}

.logo h1 {
    color: var(--color-primary);
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 8px;
}

.logo .subtitle {
    color: var(--color-text-muted);
    font-size: 14px;
    margin-top: 8px;
}

/* ============================================
   FORMULARIO
   ============================================ */

.form-group {
    margin-bottom: 24px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--color-contrast);
    font-size: 14px;
}

input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--color-border);
    border-radius: 12px;
    font-size: 16px;
    font-family: 'Inter', sans-serif;
    color: var(--color-contrast);
    transition: all 0.2s ease;
}

input:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(74,54,202,0.12);
}

input::placeholder {
    color: #a0aec0;
}

/* ============================================
   BOTÓN DE LOGIN
   ============================================ */

.btn-login {
    width: 100%;
    background: var(--gradient-primary);
    color: white;
    border: none;
    padding: 14px;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    position: relative;
    overflow: hidden;
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-accent);
}

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

.btn-login:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

/* ============================================
   ALERTAS Y MENSAJES
   ============================================ */

.alert {
    padding: 12px 16px;
    border-radius: 12px;
    margin-bottom: 24px;
    display: none;
    font-size: 14px;
    font-weight: 500;
    animation: slideIn 0.3s ease;
}

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

.alert-error {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fecaca;
    display: block;
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #a7f3d0;
    display: block;
}

.alert-info {
    background: #dbeafe;
    color: #1e40af;
    border: 1px solid #bfdbfe;
    display: block;
}

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

.footer-text {
    text-align: center;
    margin-top: 24px;
    color: var(--color-text-muted);
    font-size: 14px;
}

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

@media (max-width: 480px) {
    .login-container {
        padding: 32px 24px;
        margin: 16px;
    }
    
    .logo img {
        width: 60px;
        height: 60px;
    }
    
    .logo h1 {
        font-size: 20px;
    }
    
    input {
        padding: 10px 14px;
        font-size: 14px;
    }
    
    .btn-login {
        padding: 12px;
        font-size: 14px;
    }
}

/* ============================================
   DARK MODE (opcional - basado en preferencia del sistema)
   ============================================ */

@media (prefers-color-scheme: dark) {
    body {
        background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
    }
    
    /* El formulario se mantiene claro para contraste */
}

/* ============================================
   ANIMACIONES ADICIONALES
   ============================================ */

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.loading-spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-right: 8px;
}

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

/* ============================================
   ESTADOS DE VALIDACIÓN
   ============================================ */

input.error {
    border-color: var(--color-error);
    background-color: #fef2f2;
}

input.success {
    border-color: #16a34a;
    background-color: #f0fdf4;
}

.error-message {
    color: var(--color-error);
    font-size: 12px;
    margin-top: 4px;
    display: block;
}