/* Nebula Glass - Futuristic Premium Theme */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;600;700&display=swap');

:root {
    --bg-deep: #0f172a;
    --accent-glow: #38bdf8;
    --accent-soft: #6366f1;
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --text-main: #f1f5f9;
    --text-dim: #94a3b8;
}

body {
    font-family: 'Outfit', sans-serif;
    background: radial-gradient(circle at top right, #1e293b, #0f172a);
    color: var(--text-main);
    min-height: 100vh;
    margin: 0;
}

.card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border) !important;
    border-radius: 1.5rem;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    color: var(--text-main);
}

.card-body h1, .card-body h3, .card-body h5, .card-body h6 {
    color: #fff;
    font-weight: 700;
}

.text-secondary {
    color: var(--text-dim) !important;
}

.form-label {
    color: #cbd5e1;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.form-control, .form-select {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--glass-border);
    color: #fff !important;
    border-radius: 1rem;
    padding: 0.75rem 1.25rem;
    transition: all 0.3s ease;
}

.form-control:focus, .form-select:focus {
    background: rgba(255, 255, 255, 0.06);
    border-color: var(--accent-glow);
    box-shadow: 0 0 15px rgba(56, 189, 248, 0.3);
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-glow), var(--accent-soft));
    border: none;
    padding: 0.8rem 1.5rem;
    font-weight: 600;
    border-radius: 1rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(56, 189, 248, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(56, 189, 248, 0.6);
}

.btn-success {
    background: linear-gradient(135deg, #10b981, #059669);
    border: none;
    border-radius: 1rem;
    padding: 0.8rem 1.5rem;
}

.bg-light-subtle {
    background: rgba(255, 255, 255, 0.02) !important;
}

#previewContainer {
    border: 1px dashed var(--glass-border) !important;
}

#previewContainer img {
    padding: 20px;
    background: #fff; /* QR debe seguir teniendo fondo blanco para legibilidad */
    border-radius: 1rem;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

.alert {
    border-radius: 1rem;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.2);
    color: #10b981;
}

/* Scrollbar futurista */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-deep);
}
::-webkit-scrollbar-thumb {
    background: var(--glass-border);
    border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--accent-glow);
}