/* Custom CSS for Microbiome Analysis Platform */

:root {
    --primary-color: #007bff;
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --info-color: #17a2b8;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
}

/* General Styles */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, #0056b3 100%);
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="dna" patternUnits="userSpaceOnUse" width="20" height="20"><path d="M0 0L20 20M20 0L0 20" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23dna)"/></svg>');
    opacity: 0.3;
}

.hero-section .container {
    position: relative;
    z-index: 1;
}

.hero-icon {
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

/* Feature Cards */
.feature-icon {
    transition: transform 0.3s ease;
}

.card:hover .feature-icon {
    transform: none;
}

.card {
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
    transform: none;
    box-shadow: none !important;
}

/* Dataset Cards */
.dataset-card {
    transition: all 0.2s ease;
    border: 1px solid #e0e0e0;
}

.dataset-card:hover {
    border-color: #e0e0e0;
    transform: none;
    box-shadow: none;
}

/* Step Numbers */
.step-number {
    font-size: 1.5rem;
    font-weight: bold;
    transition: transform 0.3s ease;
}

.step-number:hover {
    transform: scale(1.1);
}

/* Navigation */
.navbar-brand {
    font-weight: 600;
    font-size: 1.25rem;
}

.navbar-nav .nav-link {
    font-weight: 500;
    transition: color 0.2s ease;
}

.navbar-nav .nav-link:hover {
    color: rgba(255,255,255,0.8) !important;
}

/* Profile Picture */
.navbar .nav-profile-pic,
.navbar .rounded-circle {
    object-fit: cover;
    vertical-align: middle;
    border: 2px solid rgba(255,255,255,0.3);
    transition: border-color 0.2s ease;
}

.navbar .rounded-circle:hover {
    border-color: rgba(255,255,255,0.6);
}

/* Buttons */
.btn {
    font-weight: 500;
    transition: all 0.2s ease;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

.btn-primary {
    background: linear-gradient(45deg, var(--primary-color), #0056b3);
    border: none;
}

.btn-primary:hover {
    background: linear-gradient(45deg, #0056b3, #004085);
}

/* Tables */
.table {
    border-radius: 0.5rem;
    overflow: hidden;
}

.table th {
    background-color: var(--light-color);
    border-bottom: 2px solid #dee2e6;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.875rem;
    letter-spacing: 0.5px;
}

.table-hover tbody tr:hover {
    background-color: rgba(0,123,255,0.05);
}

/* Badges */
.badge {
    font-weight: 500;
    letter-spacing: 0.3px;
}

/* Forms */
.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(0,123,255,0.25);
}

.form-control.is-invalid {
    border-color: var(--danger-color);
    animation: shake 0.5s ease-in-out;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

/* Alerts */
.alert {
    border: none;
    border-radius: 0.75rem;
    font-weight: 500;
}

.alert-dismissible .btn-close {
    padding: 0.75rem 1rem;
}

/* Cards */
.card {
    border-radius: 0.75rem;
    border: 1px solid #e0e0e0;
}

.card-header {
    background-color: rgba(0,123,255,0.05);
    border-bottom: 1px solid #e0e0e0;
    font-weight: 600;
}

/* Breadcrumbs */
.breadcrumb {
    background-color: transparent;
    padding: 0;
    margin-bottom: 1rem;
}

.breadcrumb-item a {
    color: var(--primary-color);
    text-decoration: none;
}

.breadcrumb-item a:hover {
    text-decoration: underline;
}

/* Loading States */
.btn:disabled {
    opacity: 0.7;
    transform: none !important;
}

.fa-spin {
    animation: fa-spin 1s infinite linear;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-section {
        text-align: center;
    }
    
    .hero-section .display-4 {
        font-size: 2rem;
    }
    
    .dataset-card {
        margin-bottom: 1rem;
    }
    
    .btn-group {
        display: flex;
        flex-direction: column;
        width: 100%;
    }
    
    .btn-group .btn {
        margin-bottom: 0.5rem;
        border-radius: 0.375rem !important;
    }
}

/* Dark mode support (for future implementation) */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-color: #1a1a1a;
        --text-color: #ffffff;
        --card-bg: #2d2d2d;
    }
}

/* Utility Classes */
.text-primary-light {
    color: rgba(0,123,255,0.7) !important;
}

.bg-primary-light {
    background-color: rgba(0,123,255,0.1) !important;
}

.border-primary-light {
    border-color: rgba(0,123,255,0.3) !important;
}

/* Animation Classes */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

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

.slide-in-left {
    animation: slideInLeft 0.5s ease-out;
}

@keyframes slideInLeft {
    from { transform: translateX(-100%); }
    to { transform: translateX(0); }
}

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

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

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

::-webkit-scrollbar-thumb:hover {
    background: #0056b3;
}

/* Print Styles */
@media print {
    .navbar, .btn, .alert {
        display: none !important;
    }
    
    .card {
        border: 1px solid #000 !important;
        break-inside: avoid;
    }
}