/* VVC Converter Server - Dark Carbon Theme */

:root {
    --carbon-dark: #1a1a1a;
    --carbon-darker: #0d0d0d;
    --carbon-light: #2d2d2d;
    --carbon-lighter: #3d3d3d;
    --blueviolet: #8a2be2;
    --blueviolet-light: #9d4edd;
    --blueviolet-dark: #6a1b9a;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --text-muted: #808080;
    --border-color: #404040;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --error-color: #dc3545;
}

body {
    background: linear-gradient(135deg, var(--carbon-dark) 0%, var(--carbon-darker) 100%);
    color: var(--text-primary);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    min-height: 100vh;
}

.navbar-custom {
    background: linear-gradient(135deg, var(--carbon-darker) 0%, var(--carbon-dark) 100%);
    border-bottom: 2px solid var(--blueviolet);
    box-shadow: 0 4px 20px rgba(138, 43, 226, 0.3);
}

.navbar-brand {
    background: linear-gradient(45deg, var(--blueviolet), var(--blueviolet-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
    font-size: 1.5rem;
}

.nav-link {
    color: var(--text-secondary) !important;
    transition: all 0.3s ease;
    border-radius: 8px;
    margin: 0 0.25rem;
}

.nav-link:hover, .nav-link.active {
    color: var(--blueviolet) !important;
    background: rgba(138, 43, 226, 0.1);
}

.nav-link i {
    margin-right: 0.5rem;
}

/* Scrollbar customization */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--carbon-darker);
}

::-webkit-scrollbar-thumb {
    background: var(--blueviolet);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--blueviolet-light);
}

/* Responsive Design */
@media (max-width: 768px) {
    .navbar-brand {
        font-size: 1.2rem;
    }
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in {
    animation: fadeIn 0.5s ease-out;
}

/* Loading animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid var(--border-color);
    border-radius: 50%;
    border-top-color: var(--blueviolet);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Button styles */
.btn-custom {
    background: linear-gradient(135deg, var(--blueviolet) 0%, var(--blueviolet-light) 100%);
    border: none;
    border-radius: 8px;
    color: white;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-custom:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(138, 43, 226, 0.4);
    color: white;
}

/* Card styles */
.card-custom {
    background: linear-gradient(145deg, var(--carbon-light) 0%, var(--carbon-lighter) 100%);
    border: 1px solid var(--border-color);
    border-radius: 15px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.card-custom:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}