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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.8)),
                url('https://images.unsplash.com/photo-1585747860715-2ba37e788b70?q=80&w=2070') center/cover no-repeat;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #f1f5f9;
}

.container {
    width: 100%;
    max-width: 420px;
    padding: 20px;
}

.login-card {
    background: rgba(20, 20, 20, 0.88);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(212, 175, 55, 0.35);
    border-radius: 16px;
    padding: 40px 35px;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.5);
}

.logo {
    text-align: center;
    margin-bottom: 25px;
}

.logo h1 {
    font-size: 34px;
    font-weight: 700;
    color: #d4af37;
    letter-spacing: 4px;
    margin-bottom: 2px;
}

.logo p {
    font-size: 14px;
    color: #aaa;
    letter-spacing: 6px;
}

.tabs {
    display: flex;
    margin-bottom: 25px;
    border-bottom: 1px solid #333;
}

.tab {
    flex: 1;
    background: none;
    border: none;
    color: #999;
    padding: 12px;
    font-size: 15px;
    cursor: pointer;
    transition: all 0.25s;
}

.tab.active {
    color: #d4af37;
    border-bottom: 2px solid #d4af37;
}

.formulario {
    display: none;
}

.formulario.active {
    display: block;
}

.form-group {
    margin-bottom: 16px;
}

.form-group input {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid #444;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.07);
    color: #f1f5f9;
    font-size: 15px;
    outline: none;
    transition: border-color 0.25s;
}

.form-group input:focus {
    border-color: #d4af37;
}

.form-group input::placeholder {
    color: #888;
}

.btn-principal {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, #d4af37, #b8860b);
    color: #111;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.25s;
    margin-top: 8px;
}

.btn-principal:hover {
    background: linear-gradient(135deg, #e0c04a, #c9a227);
    transform: translateY(-1px);
}

.mensaje {
    margin-top: 18px;
    text-align: center;
    font-size: 14px;
    min-height: 20px;
}

.mensaje.error {
    color: #f87171;
}

.mensaje.exito {
    color: #4ade80;
}

/* Botón mostrar/ocultar contraseña */
.password-group {
    position: relative;
}

.password-group input {
    padding-right: 45px;
}

.toggle-password {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: #d4af37;
    cursor: pointer;
    font-size: 18px;
    padding: 0;
}

.label-rol {
    display: block;
    font-size: 13px;
    color: #aaa;
    margin-bottom: 6px;
}

.form-group select {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid #444;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.07);
    color: #111;
    font-size: 15px;
    outline: none;
    cursor: pointer;
}

.form-group select:focus {
    border-color: #d4af37;
}