:root {
    --primary: #818cf8;
    --primary-dark: #6366f1;
    --accent: #f472b6;
    --bg: #0f172a;
    --card-bg: rgba(30, 41, 59, 0.7);
    --text: #f8fafc;
    --glass: rgba(30, 41, 59, 0.5);
    --border: rgba(255, 255, 255, 0.1);
}

body {
    background: radial-gradient(circle at top right, #1e1b4b, #0f172a) !important;
    font-family: 'Inter', -apple-system, sans-serif !important;
    color: var(--text) !important;
    min-height: 100vh;
}

/* Tarjeta de Login */
.card {
    background: var(--card-bg) !important;
    backdrop-filter: blur(12px);
    border: 1px solid var(--border) !important;
    border-radius: 24px !important;
    box-shadow: 0 20px 40px -5px rgba(0, 0, 0, 0.4) !important;
    color: var(--text) !important;
}

.text-primary {
    background: linear-gradient(to right, #818cf8, #f472b6);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    font-size: 2.5rem;
}

.text-muted {
    color: #94a3b8 !important;
}

/* Inputs */
.form-label {
    margin-bottom: 0.4rem;
    color: #cbd5e1;
    font-weight: 600;
}

.form-control {
    background: rgba(0, 0, 0, 0.2) !important;
    padding: 0.8rem 1rem;
    border: 1px solid #334155 !important;
    border-radius: 12px;
    color: white !important;
    transition: all 0.2s ease;
}

.form-control:focus {
    border-color: var(--primary) !important;
    box-shadow: 0 0 0 4px rgba(129, 140, 248, 0.1) !important;
    background: rgba(0, 0, 0, 0.4) !important;
}

/* Botón */
.btn-primary {
    padding: 14px;
    font-weight: 700;
    border-radius: 12px;
    background: var(--primary) !important;
    border: none;
    letter-spacing: 0.5px;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(129, 140, 248, 0.3) !important;
    background: var(--primary-dark) !important;
}