/* Variables de color basadas en el logotipo */
:root {
    --gold: #D4AF37;
    --gold-dark: #B89B2F;
    --silver: #C0C0C0;
    --silver-dark: #A9A9A9;
    --dark-bg: #121212;
    --card-bg: rgba(20, 20, 20, 0.8);
    --border-radius: 12px;
    --transition: all 0.3s ease;
    --box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

/* Estilos específicos para la página de login */
body {
    background: linear-gradient(135deg, #0f0f0f 0%, #1a1a1a 100%);
    min-height: 100vh;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: #e0e0e0;
}

/* Logo */
.logo-img {
    max-width: 300px;
    height: auto;
    margin: 0 auto 1.5rem;
    filter: drop-shadow(0 0 10px rgba(212, 175, 55, 0.5));
    transition: var(--transition);
}

.logo-img:hover {
    transform: scale(1.05);
    filter: drop-shadow(0 0 15px rgba(212, 175, 55, 0.8));
}

/* Tarjeta de login */
.login-card {
    border-radius: var(--border-radius);
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(208, 175, 55, 0.2);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    overflow: hidden;
}

.login-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.6);
    border-color: rgba(212, 175, 55, 0.4);
}

/* Botones */
.btn-gold {
    background: linear-gradient(135deg, var(--gold) 0%, var(--gold-dark) 100%);
    color: #000;
    border: none;
    border-radius: 8px;
    font-weight: 700;
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.btn-gold:hover {
    background: linear-gradient(135deg, #E6C242 0%, #C9A839 100%);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(212, 175, 55, 0.4);
}

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

.btn-gold .btn-loader {
    display: none;
    width: 24px;
    height: 24px;
    border: 3px solid rgba(0, 0, 0, 0.3);
    border-top: 3px solid #000;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.btn-gold.loading .btn-text {
    display: none;
}

.btn-gold.loading .btn-loader {
    display: block;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Texto dorado */
.text-gold {
    color: var(--gold) !important;
    text-shadow: 0 0 5px rgba(212, 175, 55, 0.5);
}

/* Version de la aplicación */
.version {
    font-size: 0.8rem;
    opacity: 0.7;
    margin-top: 0.5rem;
}

/* Formulario */
.form-control {
    border-radius: 8px !important;
    padding: 12px 15px !important;
    transition: var(--transition);
    border: 1px solid #444 !important;
    background-color: #222 !important;
    color: #e0e0e0 !important;
}

.form-control:focus {
    border-color: var(--gold) !important;
    box-shadow: 0 0 0 0.25rem rgba(212, 175, 55, 0.25) !important;
}

/* Responsive adjustments */
@media (max-width: 576px) {
    .logo-img {
        max-width: 250px;
    }
    
    .login-card {
        border-radius: 10px;
    }
    
    .btn-gold {
        font-size: 1rem;
        padding: 0.75rem;
    }
}

@media (max-width: 400px) {
    .logo-img {
        max-width: 200px;
    }
    
    .login-card {
        padding: 1rem;
    }
    
    .card-body {
        padding: 1.5rem !important;
    }
}