#settings-section h2,
body {
    color: var(--text-primary)
}

#preview-section,
#settings-section,
#upload-section,
header {
    box-shadow: var(--shadow)
}

#preview-section,
#settings-section,
#upload-section,
footer {
    padding: 2rem;
    background: var(--bg-card)
}

#drop-zone,
#smoothing-value,
#status-message,
footer,
header {
    text-align: center
}

#preview-section,
#settings-section,
#upload-section,
footer,
header {
    background: var(--bg-card)
}

:root {
    --bg-dark: #0a0a0f;
    --bg-darker: #050508;
    --bg-card: #16161d;
    --bg-hover: #1e1e26;
    --primary: #7c3aed;
    --primary-hover: #6d28d9;
    --primary-light: #8b5cf6;
    --secondary: #3b82f6;
    --secondary-hover: #2563eb;
    --danger: #ef4444;
    --danger-hover: #dc2626;
    --success: #10b981;
    --success-hover: #059669;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --border: #334155;
    --border-light: #475569;
    --radius: 12px;
    --radius-sm: 6px;
    --radius-lg: 16px;
    --shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
    --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 15px 40px rgba(0, 0, 0, 0.4)
}

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

body {
    font-family: Inter, -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-dark);
    min-height: 100vh;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    padding: 20px
}

header {
    margin-bottom: 2rem;
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border)
}

header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: .5rem;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent
}

#app-core {
    max-width: 1400px;
    margin: 0 auto
}

#app-content {
    display: grid;
    gap: 1.5rem;
    grid-template-columns: 1fr
}

@media (min-width:1024px) {
    #app-content {
        grid-template-columns: 350px 1fr
    }
}

#upload-section {
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    margin-bottom: 1rem
}

#drop-zone {
    border: 3px dashed var(--border-light);
    border-radius: var(--radius);
    padding: 3rem 2rem;
    cursor: pointer;
    transition: .3s;
    background: rgba(30, 34, 46, .3)
}

#drop-zone:hover,
.drag-over {
    border-color: var(--primary);
    background: rgba(124, 58, 237, .1);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm)
}

#drop-zone p {
    font-size: 1.25rem;
    font-weight: 500;
    margin-bottom: .5rem
}

#drop-zone .small-text {
    font-size: .875rem;
    color: var(--text-muted)
}

#settings-section {
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    height: fit-content
}

#settings-section h2 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: .5rem
}

#image-settings {
    display: flex;
    flex-direction: column;
    gap: 1.5rem
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: .5rem
}

.form-group label {
    font-weight: 500;
    color: var(--text-secondary);
    font-size: .95rem
}

.form-group input[type=number],
.form-group input[type=range] {
    background: var(--bg-dark);
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    padding: .75rem 1rem;
    font-size: 1rem;
    transition: .2s;
    width: 100%
}

.form-group input[type=number]:focus,
.form-group input[type=range]:focus {
    outline: 0;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(124, 58, 237, .1)
}

.checkbox-group {
    display: flex;
    align-items: center;
    gap: .75rem;
    margin-top: .5rem
}

.checkbox-group input[type=checkbox] {
    width: 18px;
    height: 18px;
    border: 2px solid var(--border);
    border-radius: 4px;
    background: var(--bg-dark);
    cursor: pointer;
    transition: .2s
}

.checkbox-group input[type=checkbox]:checked {
    background: var(--primary);
    border-color: var(--primary)
}

.checkbox-group input[type=checkbox]:checked::after {
    content: '✓';
    color: #fff;
    font-size: 12px;
    position: absolute;
    transform: translate(2px, -2px)
}

.checkbox-group label {
    cursor: pointer;
    color: var(--text-primary);
    font-size: .95rem
}

#smoothing-container {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-top: .5rem
}

#smoothing {
    flex: 1;
    height: 6px;
    border-radius: 3px;
    background: linear-gradient(to right, var(--primary), var(--primary-light))
}

#smoothing-value {
    min-width: 30px;
    font-weight: 600;
    color: var(--primary)
}

#preview-section {
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    min-height: 500px
}

#preview-section h2 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary)
}

.canvas-container {
    position: relative;
    background: var(--bg-dark);
    border-radius: var(--radius);
    padding: 1rem;
    border: 1px solid var(--border)
}

#image-canvas {
    display: block;
    max-width: 100%;
    max-height: 60vh;
    margin: 0 auto;
    background: var(--bg-darker);
    border-radius: var(--radius-sm)
}

#comparison-slider {
    position: absolute;
    top: 50%;
    left: 0;
    width: 100%;
    height: 40px;
    transform: translateY(-50%);
    background: 0 0;
    appearance: none;
    cursor: ew-resize;
    z-index: 10
}

#comparison-slider::-webkit-slider-thumb {
    appearance: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--accent-primary);
    cursor: ew-resize
}

#comparison-slider::-moz-range-thumb {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--accent-primary);
    cursor: ew-resize
}

#controls-section {
    grid-column: 1/-1;
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 1rem;
    flex-wrap: wrap
}

#reset-button,
#save-button {
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: .3s;
    display: flex;
    align-items: center;
    gap: .5rem;
    min-width: 200px;
    justify-content: center
}

#save-button {
    background: linear-gradient(135deg, var(--success), var(--success-hover));
    color: #fff
}

#save-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(16, 185, 129, .3)
}

#reset-button {
    background: linear-gradient(135deg, var(--danger), var(--danger-hover));
    color: #fff
}

#reset-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(239, 68, 68, .3)
}

#status-message {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: var(--radius-sm);
    display: none;
    animation: .3s slideIn
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px)
    }

    to {
        opacity: 1;
        transform: translateY(0)
    }
}

footer {
    margin-top: 3rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    color: var(--text-muted);
    font-size: .9rem
}

::-webkit-scrollbar {
    width: 8px
}

::-webkit-scrollbar-track {
    background: var(--bg-dark)
}

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

::-webkit-scrollbar-thumb:hover {
    background: var(--border-light)
}

a,
a:active,
a:hover,
a:link,
a:visited {
    color: #fff;
    text-decoration: underline
}