/* Global Styles */
:root {
    --primary: #2563eb;
    --secondary: #7c3aed;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --dark: #1e293b;
    --light: #f8fafc;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: #f8fafc;
    color: #1e293b;
    line-height: 1.6;
}

/* Navbar */
.navbar {
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    padding: 1rem 0;
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
}

.nav-link {
    font-weight: 500;
    transition: all 0.3s ease;
}

.nav-link:hover {
    transform: translateY(-2px);
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 100px 0;
    margin-bottom: 50px;
}

.hero-section h1 {
    font-weight: 700;
}

.hero-section .lead {
    font-size: 1.25rem;
    opacity: 0.95;
}

/* Feature Cards */
.feature-card {
    background: white;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    height: 100%;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.15);
}

/* Step Numbers */
.step-number {
    width: 60px;
    height: 60px;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: 20px;
}

/* Cards */
.card {
    border: none;
    border-radius: 10px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.card:hover {
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

/* Stats Cards */
.stat-card {
    background: white;
    border-left: 4px solid var(--primary);
    transition: all 0.3s ease;
}

.stat-card:hover {
    transform: translateX(5px);
    border-left-width: 6px;
}

/* Upload Area */
.upload-area {
    border: 3px dashed #cbd5e1;
    border-radius: 10px;
    padding: 60px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background: #f8fafc;
}

.upload-area:hover {
    border-color: var(--primary);
    background: #e0e7ff;
}

.upload-area.dragover {
    border-color: var(--success);
    background: #d1fae5;
}

/* Pricing Cards */
.pricing-card {
    transition: all 0.3s ease;
    border-radius: 15px;
}

.pricing-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.15);
}

.pricing-price {
    margin: 20px 0;
}

/* Buttons */
.btn {
    font-weight: 600;
    padding: 0.5rem 1.5rem;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

.btn-lg {
    padding: 0.75rem 2rem;
    font-size: 1.1rem;
}

/* Progress Bars */
.progress {
    border-radius: 10px;
    overflow: hidden;
}

.progress-bar {
    transition: width 1s ease;
}

/* Tables */
.table {
    background: white;
}

.table thead {
    background: #f1f5f9;
}

.table tbody tr {
    transition: background 0.2s ease;
}

.table tbody tr:hover {
    background: #f8fafc;
}

/* Badges */
.badge {
    padding: 0.4em 0.8em;
    font-weight: 600;
}

/* Forms */
.form-control, .form-select {
    border-radius: 8px;
    border: 2px solid #e2e8f0;
    padding: 0.6rem 1rem;
    transition: all 0.3s ease;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-label {
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #334155;
}

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

/* Footer */
footer {
    margin-top: auto;
}

footer a {
    text-decoration: none;
    transition: opacity 0.3s ease;
}

footer a:hover {
    opacity: 0.8;
}

/* Loading Spinner */
.spinner-border {
    width: 3rem;
    height: 3rem;
}

/* Image Preview */
#imagePreview {
    max-height: 300px;
    object-fit: contain;
}

/* Result Item */
.result-item {
    padding: 15px;
    background: #f8fafc;
    border-radius: 8px;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-section {
        padding: 60px 0;
        text-align: center;
    }
    
    .hero-section h1 {
        font-size: 2rem;
    }
    
    .feature-card {
        margin-bottom: 20px;
    }
}

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

.fade-in {
    animation: fadeIn 0.6s ease;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: #f1f5f9;
}

::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

/* Utility Classes */
.text-shadow {
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.shadow-lg {
    box-shadow: 0 10px 25px rgba(0,0,0,0.15) !important;
}

.rounded-lg {
    border-radius: 15px !important;
}