:root {
    --primary-color: #4f46e5;
    --primary-dark: #4338ca;
    --secondary-color: #10b981;
    --bg-light: #f9fafb;
    --bg-dark: #111827;
    --text-light: #1f2937;
    --text-dark: #f3f4f6;
    --border-light: #e5e7eb;
    --border-dark: #374151;
}

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

body {
    font-family: 'Inter', sans-serif;
    transition: background-color 0.3s ease, color 0.3s ease;
}

body.light-mode {
    background: var(--bg-light);
    color: var(--text-light);
}

body.dark-mode {
    background: var(--bg-dark);
    color: var(--text-dark);
}

/* Glassmorphism Navbar */
.glass-nav {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.dark-mode .glass-nav {
    background: rgba(17, 24, 39, 0.95);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

/* Gradient Text */
.gradient-text {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Cards */
.hover-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hover-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04) !important;
}

/* Drop Zones */
.drop-zone {
    border: 2px dashed var(--border-light);
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.05);
}

.dark-mode .drop-zone {
    border-color: var(--border-dark);
}

.drop-zone.drag-over {
    border-color: var(--primary-color);
    background: rgba(79, 70, 229, 0.1);
    transform: scale(1.02);
}

/* Position Grid */
.position-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    max-width: 250px;
    margin: 0 auto;
}

.position-btn {
    padding: 12px;
    border: 1px solid var(--border-light);
    background: white;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 5px;
}

.dark-mode .position-btn {
    background: var(--bg-dark);
    border-color: var(--border-dark);
    color: var(--text-dark);
}

.position-btn:hover {
    border-color: var(--primary-color);
    transform: scale(1.05);
}

.position-btn.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

/* Image Preview Cards */
.image-preview-card {
    position: relative;
    overflow: hidden;
    border-radius: 8px;
    background: white;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s ease;
}

.image-preview-card:hover {
    transform: scale(1.05);
}

.remove-image-btn {
    position: absolute;
    top: 5px;
    right: 5px;
    background: rgba(220, 38, 38, 0.9);
    color: white;
    border: none;
    border-radius: 50%;
    width: 28px;
    height: 28px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.remove-image-btn:hover {
    background: #dc2626;
    transform: scale(1.1);
}

.image-name {
    padding: 8px;
    font-size: 12px;
    text-align: center;
    background: rgba(0, 0, 0, 0.05);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    backdrop-filter: blur(5px);
}

.loading-spinner {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    text-align: center;
    animation: slideUp 0.3s ease;
}

.dark-mode .loading-spinner {
    background: var(--bg-dark);
}

@keyframes slideUp {
    from {
        transform: translateY(50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* Toast Notifications */
.toast {
    animation: slideInRight 0.3s ease;
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Progress Bar */
.progress {
    height: 8px;
    border-radius: 4px;
    overflow: hidden;
}

.progress-bar {
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transition: width 0.3s ease;
}

/* Responsive Design */
@media (max-width: 768px) {
    .position-grid {
        max-width: 200px;
    }
    
    .position-btn {
        padding: 8px;
        font-size: 12px;
    }
    
    .display-4 {
        font-size: 2rem;
    }
    
    .hover-card:hover {
        transform: none;
    }
}

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

::-webkit-scrollbar-track {
    background: var(--border-light);
}

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

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

/* Animations */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.processing {
    animation: pulse 1.5s ease-in-out infinite;
}

/* Form Controls */
.form-control, .form-select {
    border-radius: 8px;
    transition: all 0.2s ease;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

/* Buttons */
.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border: none;
    border-radius: 8px;
    padding: 12px 24px;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(79, 70, 229, 0.3);
}

.btn-primary:active {
    transform: translateY(0);
}

/* Modal Styles */
.modal-content {
    border-radius: 16px;
    border: none;
}

.dark-mode .modal-content {
    background: var(--bg-dark);
    color: var(--text-dark);
}

/* Utilities */
.cursor-pointer {
    cursor: pointer;
}

.transition-all {
    transition: all 0.3s ease;
}