/* Reset y estilos base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.container {
    max-width: 400px;
    width: 100%;
}

/* Tarjeta de login */
.login-card {
    background: white;
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.2);
    position: relative;
    overflow: hidden;
}

.login-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(90deg, #ff6b6b, #ee5a24);
}

/* Header */
.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-icon {
    font-size: 4rem;
    margin-bottom: 15px;
    display: block;
}

.login-title {
    font-size: 1.8rem;
    font-weight: bold;
    color: #333;
    margin-bottom: 10px;
}

.login-subtitle {
    color: #666;
    font-size: 0.9rem;
}

/* Formulario */
.form-group {
    margin-bottom: 25px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    color: #333;
    font-weight: 600;
    font-size: 0.9rem;
}

.form-input {
    width: 100%;
    padding: 15px;
    border: 2px solid #e1e5e9;
    border-radius: 10px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: #f8f9fa;
}

.form-input:focus {
    outline: none;
    border-color: #667eea;
    background: white;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-input::placeholder {
    color: #999;
}

/* Botón */
.btn-login {
    width: 100%;
    padding: 15px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.4);
}

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

.btn-login:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* Mensajes */
.alert {
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 20px;
    font-size: 0.9rem;
    text-align: center;
}

.alert-error {
    background: #fee;
    color: #c33;
    border: 1px solid #fcc;
}

.alert-success {
    background: #efe;
    color: #363;
    border: 1px solid #cfc;
}

/* Enlaces */
.login-links {
    text-align: center;
    margin-top: 25px;
}

.login-links a {
    color: #667eea;
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.login-links a:hover {
    color: #5a6fd8;
    text-decoration: underline;
}

.login-links .separator {
    margin: 0 10px;
    color: #ccc;
}

/* Footer */
.login-footer {
    text-align: center;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid #eee;
}

.login-footer p {
    color: #666;
    font-size: 0.8rem;
}

/* Responsive */
@media (max-width: 480px) {
    .login-card {
        padding: 30px 25px;
    }

    .login-icon {
        font-size: 3rem;
    }

    .login-title {
        font-size: 1.5rem;
    }
}

/* Sin animaciones */
.fade-in {
    opacity: 1;
    transform: translateY(0);
}

/* Iconos Unicode */
.icon-admin::before { content: "👨‍💼"; }
.icon-back::before { content: "←"; }
.icon-lock::before { content: "🔒"; }
.icon-email::before { content: "📧"; }