/* UX Enhancement Styles */

/* Smooth Transitions */
* {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Enhanced Buttons */
.btn {
    border-radius: 8px;
    font-weight: 500;
    letter-spacing: 0.5px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    border: none;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
}

.btn:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

/* Button Ripple Effect */
.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:active::before {
    width: 300px;
    height: 300px;
}

/* Enhanced Cards */
.card {
    border-radius: 16px;
    border: none;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

/* Enhanced Form Inputs */
.form-control {
    border-radius: 12px;
    border: 2px solid transparent;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    padding: 12px 16px;
    font-size: 16px;
    transition: all 0.3s ease;
}

.form-control:focus {
    border-color: var(--bs-primary);
    box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.25);
    background: rgba(255, 255, 255, 0.08);
    transform: scale(1.02);
}

.input-group-text {
    border-radius: 12px 0 0 12px;
    border: 2px solid transparent;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
}

/* Enhanced Color Display */
.color-display {
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    overflow: hidden;
}

.color-display::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0) 100%);
    pointer-events: none;
}

.color-display:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
}

/* Enhanced Navigation */
.navbar {
    backdrop-filter: blur(10px);
    background: rgba(33, 37, 41, 0.95) !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
    background: linear-gradient(135deg, var(--bs-primary), var(--bs-info));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-link {
    border-radius: 8px;
    margin: 0 4px;
    padding: 8px 16px !important;
    transition: all 0.3s ease;
}

.nav-link:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

/* Enhanced Alerts */
.alert {
    border-radius: 12px;
    border: none;
    backdrop-filter: blur(10px);
    font-weight: 500;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.alert-success {
    background: linear-gradient(135deg, rgba(25, 135, 84, 0.9), rgba(25, 135, 84, 0.7));
}

.alert-danger {
    background: linear-gradient(135deg, rgba(220, 53, 69, 0.9), rgba(220, 53, 69, 0.7));
}

.alert-info {
    background: linear-gradient(135deg, rgba(13, 202, 240, 0.9), rgba(13, 202, 240, 0.7));
}

/* Loading Animation */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.loading-overlay.show {
    opacity: 1;
    visibility: visible;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top: 4px solid var(--bs-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Enhanced Color Picker */
.color-picker-container {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.color-picker-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0) 100%);
    pointer-events: none;
    z-index: 1;
}

/* Enhanced Canvas */
canvas {
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    cursor: crosshair;
    transition: transform 0.3s ease;
}

canvas:hover {
    transform: scale(1.02);
}

/* Enhanced File Upload */
.file-upload-area {
    border: 2px dashed rgba(255, 255, 255, 0.3);
    border-radius: 16px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.file-upload-area:hover {
    border-color: var(--bs-primary);
    background: rgba(13, 110, 253, 0.05);
    transform: scale(1.02);
}

.file-upload-area.dragover {
    border-color: var(--bs-success);
    background: rgba(25, 135, 84, 0.1);
    transform: scale(1.05);
}

/* Enhanced Tooltips */
.tooltip {
    backdrop-filter: blur(10px);
}

.tooltip-inner {
    background: rgba(0, 0, 0, 0.9);
    border-radius: 8px;
    font-weight: 500;
    padding: 8px 12px;
}

/* Enhanced Progress Bars */
.progress {
    border-radius: 10px;
    height: 8px;
    background: rgba(255, 255, 255, 0.1);
    overflow: hidden;
}

.progress-bar {
    background: linear-gradient(135deg, var(--bs-primary), var(--bs-info));
    transition: width 0.6s ease;
}

/* Enhanced Footer */
footer {
    backdrop-filter: blur(10px);
    background: rgba(33, 37, 41, 0.95) !important;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* Enhanced Palette Colors */
.palette-color {
    border-radius: 12px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.palette-color::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.2) 0%, rgba(255, 255, 255, 0) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.palette-color:hover::before {
    opacity: 1;
}

.palette-color:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
}

/* Enhanced Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

.pulse {
    animation: pulse 2s infinite;
}

/* Mobile Optimizations */
@media (max-width: 768px) {
    .card {
        margin: 0.5rem;
    }
    
    .btn {
        padding: 12px 24px;
        font-size: 16px;
    }
    
    .form-control {
        font-size: 16px; /* Prevent zoom on iOS */
    }
    
    canvas {
        max-width: 100%;
        height: auto;
    }
}

/* Glass Morphism Effect */
.glass {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Enhanced Focus States */
*:focus {
    outline: none;
}

.btn:focus,
.form-control:focus,
.nav-link:focus {
    box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.25);
}

/* Smooth Page Transitions */
body {
    overflow-x: hidden;
}

.page-transition {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease-out forwards;
}

/* Enhanced Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        transition: none !important;
        animation: none !important;
    }
}

/* Dark Theme Enhancements */
[data-bs-theme="dark"] .card {
    background: rgba(255, 255, 255, 0.02) !important;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

[data-bs-theme="dark"] .form-control {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.1);
    color: #fff;
}

[data-bs-theme="dark"] .form-control:focus {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--bs-primary);
}