/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(15, 15, 26, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-light);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 75px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.625rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.03em;
}

.logo {
    filter: drop-shadow(0 2px 8px rgba(59, 130, 246, 0.4));
}

.nav-links {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.nav-link {
    color: #e2e8f0;
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
    position: relative;
    padding: 0.625rem 1rem;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-link i {
    font-size: 0.875rem;
    opacity: 0.7;
}

.nav-link:hover {
    color: var(--accent-blue);
    background: rgba(59, 130, 246, 0.1);
}

.nav-link.active {
    color: var(--accent-blue);
    background: rgba(59, 130, 246, 0.15);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    padding: 0.5rem;
    border-radius: var(--radius-md);
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: #ffffff;
    transition: var(--transition);
    border-radius: 2px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.625rem;
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
    position: relative;
    overflow: hidden;
    color: #ffffff;
}

.btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.1);
    transform: translateX(-100%);
    transition: transform 0.3s;
}

.btn:hover::before {
    transform: translateX(0);
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
    color: white;
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(59, 130, 246, 0.4);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: #ffffff;
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent-blue);
}

.btn-outline {
    background: transparent;
    color: var(--accent-blue);
    border: 2px solid var(--accent-blue);
}

.btn-outline:hover {
    background: var(--accent-blue);
    color: white;
}

.btn-success {
    background: var(--accent-green);
    color: white;
}

.btn-danger {
    background: var(--accent-red);
    color: white;
}

.btn-lg {
    padding: 1.125rem 2.25rem;
    font-size: 1.125rem;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.w-100 {
    width: 100%;
}

/* Cards */
.card {
    background: linear-gradient(135deg, #2a3555 0%, #1f2847 100%);
    border: 2px solid #4a5578;
    border-radius: var(--radius-xl);
    padding: 1.75rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
    opacity: 1 !important;
    visibility: visible !important;
}

.card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(79, 158, 255, 0.1), transparent);
    opacity: 0;
    transition: var(--transition);
    pointer-events: none;
}

.card:hover {
    border-color: var(--accent-blue);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(79, 158, 255, 0.3);
}

.card:hover::before {
    opacity: 1;
}

.card-header {
    padding: 1.25rem 1.5rem;
    background: rgba(0, 0, 0, 0.3);
    border-bottom: 2px solid #4a5578;
    font-weight: 600;
    font-size: 1.125rem;
    color: #ffffff;
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-lg);
    font-size: 0.8125rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge-success {
    background: rgba(34, 197, 94, 0.2);
    color: var(--accent-green);
    border: 2px solid rgba(34, 197, 94, 0.4);
}

.badge-warning {
    background: rgba(251, 146, 60, 0.2);
    color: var(--accent-orange);
    border: 2px solid rgba(251, 146, 60, 0.4);
}

.badge-error {
    background: rgba(248, 113, 113, 0.2);
    color: var(--accent-red);
    border: 2px solid rgba(248, 113, 113, 0.4);
}

.badge-info {
    background: rgba(79, 158, 255, 0.2);
    color: var(--accent-blue);
    border: 2px solid rgba(79, 158, 255, 0.4);
}

/* Loading Spinner */
.spinner {
    width: 44px;
    height: 44px;
    border: 4px solid var(--border);
    border-top-color: var(--accent-blue);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.spinner-sm {
    width: 24px;
    height: 24px;
    border-width: 3px;
}

/* Progress Bar */
.progress-bar {
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    position: relative;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-cyan));
    border-radius: var(--radius-lg);
    transition: width 0.3s ease;
    position: relative;
    overflow: hidden;
}

.progress-fill::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: 4rem 0 2rem;
    margin-top: 8rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section h3 {
    font-size: 1.625rem;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.footer-section h4 {
    font-size: 1.125rem;
    margin-bottom: 1.25rem;
    color: #ffffff;
}

.footer-section p {
    color: #e2e8f0;
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.footer-section li {
    margin-bottom: 0.75rem;
}

.footer-section a {
    color: #e2e8f0;
    display: inline-block;
    transition: var(--transition);
}

.footer-section a:hover {
    color: var(--accent-blue);
    transform: translateX(4px);
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    color: #ffffff;
}

.social-links a:hover {
    background: var(--accent-blue);
    border-color: var(--accent-blue);
    transform: translateY(-2px);
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid var(--border);
    text-align: center;
    color: #cbd5e1;
}

/* Form Elements */
.form-select {
    width: 100%;
    padding: 0.75rem;
    background: var(--bg-tertiary);
    color: #ffffff;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
}

.form-select:hover {
    border-color: var(--accent-blue);
}

.form-select:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-select option {
    background: var(--bg-tertiary);
    color: #ffffff;
}