/**
 * Professional Hydraulic Design Platform - UI Components
 * Reusable UI components including cards, buttons, alerts, and navigation
 */

/* Card Components */
.card {
    border: none;
    border-radius: 15px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.15);
}

.card-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: 15px 15px 0 0 !important;
    padding: 1rem 1.5rem;
    font-weight: 600;
}

/* Navigation Tab Components */
.nav-tabs .nav-link {
    border: none;
    border-radius: 10px;
    margin-right: 0.5rem;
    color: var(--primary-color);
    font-weight: 500;
    transition: all 0.3s ease;
}

.nav-tabs .nav-link:hover {
    background-color: var(--secondary-color);
    color: white;
}

.nav-tabs .nav-link.active {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* Button Components */
.btn-primary {
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
    border: none;
    border-radius: 25px;
    padding: 0.75rem 2rem;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(52, 152, 219, 0.3);
}

.btn-success {
    background: linear-gradient(135deg, var(--success-color), #229954);
    border: none;
    border-radius: 25px;
    padding: 0.75rem 2rem;
    font-weight: 600;
}

.btn-warning {
    background: linear-gradient(135deg, var(--warning-color), #e67e22);
    border: none;
    border-radius: 25px;
    padding: 0.75rem 2rem;
    font-weight: 600;
}

/* Alert Components */
.alert {
    border-radius: 10px;
    border: none;
}

/* Icon Components */
.feature-icon {
    font-size: 2rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

/* Loading Components */
.loading {
    display: none;
    text-align: center;
    padding: 2rem;
}

.loading i {
    font-size: 3rem;
    color: var(--secondary-color);
    animation: spin 1s linear infinite;
}

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