/* Ivy Image to ICO Premium Stylesheet */

/* --- Reset & Variables --- */
:root {
    --bg-dark: #07090e;
    --panel-bg: rgba(15, 22, 38, 0.65);
    --panel-border: rgba(255, 255, 255, 0.08);
    --panel-border-focus: rgba(16, 185, 129, 0.4);
    
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    
    --primary-gradient: linear-gradient(135deg, #10b981 0%, #06b6d4 100%);
    --primary-color: #10b981;
    --secondary-color: #06b6d4;
    
    --danger-color: #ef4444;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    
    --font-outfit: 'Outfit', 'Noto Sans KR', sans-serif;
    --radius-lg: 16px;
    --radius-md: 10px;
    --radius-sm: 6px;
    
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow-premium: 0 10px 30px -10px rgba(0, 0, 0, 0.7);
    --shadow-glow: 0 0 20px rgba(16, 185, 129, 0.2);
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: var(--font-outfit);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    line-height: 1.5;
}

/* --- Glowing Background Blobs --- */
.bg-glow {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
    overflow: hidden;
}

.glow-1 {
    position: absolute;
    top: -10%;
    right: 5%;
    width: 45vw;
    height: 45vw;
    background: radial-gradient(circle, rgba(16, 185, 129, 0.12) 0%, transparent 70%);
    filter: blur(80px);
    animation: pulse-slow 8s infinite alternate;
}

.glow-2 {
    position: absolute;
    bottom: -10%;
    left: -5%;
    width: 50vw;
    height: 50vw;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.1) 0%, transparent 70%);
    filter: blur(100px);
    animation: pulse-slow 12s infinite alternate-reverse;
}

@keyframes pulse-slow {
    0% { transform: scale(1) translate(0, 0); }
    100% { transform: scale(1.15) translate(3%, 5%); }
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

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

/* --- Container & Layout --- */
.app-container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

/* --- Header Section --- */
.app-header {
    text-align: center;
    margin-bottom: 32px;
    margin-top: 10px;
}

.logo {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 8px;
}

.logo-icon {
    width: 32px;
    height: 32px;
    color: var(--primary-color);
    filter: drop-shadow(0 0 8px rgba(16, 185, 129, 0.4));
}

.logo-text {
    font-size: 28px;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.highlight {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 400;
    letter-spacing: 0.2px;
}

/* --- Workspace Layout --- */
.workspace {
    display: grid;
    grid-template-columns: 1.1fr 1.2fr;
    gap: 24px;
    flex: 1;
    align-items: stretch;
    margin-bottom: 24px;
}

@media (max-width: 968px) {
    .workspace {
        grid-template-columns: 1fr;
    }
}

/* --- Glass Panels --- */
.panel {
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-radius: var(--radius-lg);
    padding: 28px;
    box-shadow: var(--shadow-premium);
    display: flex;
    flex-direction: column;
    gap: 24px;
    transition: var(--transition-smooth);
}

.panel-title {
    font-size: 18px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-primary);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding-bottom: 14px;
}

.title-icon {
    width: 20px;
    height: 20px;
    color: var(--primary-color);
}

/* --- Upload Dropzone --- */
.dropzone {
    border: 2px dashed rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-md);
    padding: 36px 20px;
    text-align: center;
    cursor: pointer;
    background: rgba(255, 255, 255, 0.02);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transition: var(--transition-smooth);
}

.dropzone:hover, .dropzone.dragover {
    border-color: var(--primary-color);
    background: rgba(16, 185, 129, 0.04);
    box-shadow: 0 0 15px rgba(16, 185, 129, 0.1) inset;
}

.icon-wrapper {
    background: rgba(255, 255, 255, 0.04);
    border-radius: 50%;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    transition: var(--transition-smooth);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.dropzone:hover .icon-wrapper {
    background: var(--primary-gradient);
    transform: translateY(-4px);
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
}

.dropzone:hover .icon-wrapper svg {
    color: white;
}

.upload-icon {
    width: 24px;
    height: 24px;
    color: var(--text-secondary);
}

.main-msg {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.sub-msg {
    font-size: 12px;
    color: var(--text-muted);
}

/* Dropzone Preview Overlay */
.preview-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #0f1524;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 16px;
    z-index: 10;
}

#sourceImgPreview {
    max-height: 80px;
    max-width: 80px;
    object-fit: contain;
    border-radius: var(--radius-sm);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
    margin-bottom: 12px;
    background-image: linear-gradient(45deg, #1a2035 25%, transparent 25%), 
                      linear-gradient(-45deg, #1a2035 25%, transparent 25%), 
                      linear-gradient(45deg, transparent 75%, #1a2035 75%), 
                      linear-gradient(-45deg, transparent 75%, #1a2035 75%);
    background-size: 12px 12px;
    background-position: 0 0, 0 6px, 6px -6px, -6px 0;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.img-meta {
    text-align: center;
    margin-bottom: 12px;
    max-width: 90%;
}

.file-name {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.file-info {
    font-size: 11px;
    color: var(--text-secondary);
}

.btn-change {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    padding: 6px 14px;
    font-size: 12px;
    font-weight: 500;
    border-radius: 30px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition-smooth);
}

.btn-change:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-1px);
}

/* --- Control Settings Groups --- */
.setting-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
    transition: var(--transition-smooth);
}

.disabled-opacity {
    opacity: 0.35;
    pointer-events: none;
}

.border-top {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 20px;
}

.flex-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.group-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

/* Radio Selection Cards */
.radio-card-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
}

.radio-card {
    display: flex;
    position: relative;
    cursor: pointer;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-md);
    padding: 12px 16px;
    transition: var(--transition-smooth);
}

.radio-card input[type="radio"] {
    position: absolute;
    opacity: 0;
}

.radio-card .card-content {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding-left: 24px;
    position: relative;
}

/* Custom Radio Dot */
.radio-card .card-content::before {
    content: '';
    position: absolute;
    left: 0;
    top: 3px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    border: 2px solid var(--text-muted);
    transition: var(--transition-smooth);
}

.radio-card input[type="radio"]:checked + .card-content::before {
    border-color: var(--primary-color);
    background: var(--primary-color);
    box-shadow: 0 0 8px rgba(16, 185, 129, 0.5);
}

.radio-card:hover {
    border-color: rgba(255, 255, 255, 0.15);
    background: rgba(255, 255, 255, 0.04);
}

.radio-card input[type="radio"]:checked ~ .card-content .card-title,
.radio-card input[type="radio"]:checked ~ .card-content::before {
    color: var(--primary-color);
}

.radio-card input[type="radio"]:checked {
    /* parent styling target */
}

/* Class applied by JS for parent container highlight on check */
.radio-card.selected {
    border-color: var(--panel-border-focus);
    background: rgba(16, 185, 129, 0.04);
}

.card-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
}

.card-desc {
    font-size: 11px;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* Hide/Show animation transition */
.hide-transition {
    max-height: 0;
    overflow: hidden;
    padding-top: 0;
    border-top: 0;
    opacity: 0;
    margin-bottom: 0;
    pointer-events: none;
    transition: max-height 0.4s ease, opacity 0.3s ease, padding 0.3s ease;
}

.hide-transition.show {
    max-height: 120px;
    opacity: 1;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 20px;
    pointer-events: all;
}

/* Background Color Picker Controls */
.bg-mode-label {
    font-size: 11px;
    font-weight: 500;
    color: var(--primary-color);
    background: rgba(16, 185, 129, 0.1);
    padding: 2px 8px;
    border-radius: 20px;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.color-picker-wrapper {
    display: flex;
    align-items: center;
    gap: 16px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-md);
    padding: 8px 12px;
}

.preset-colors {
    display: flex;
    align-items: center;
    gap: 10px;
}

.preset-color {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.15);
    cursor: pointer;
    background: transparent;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
}

.preset-color:hover {
    transform: scale(1.12);
}

.preset-color.active {
    border-color: var(--primary-color);
    box-shadow: 0 0 10px rgba(16, 185, 129, 0.5);
}

/* Transparent pattern preset */
.preset-color[data-color="transparent"] {
    background-image: linear-gradient(45deg, #bbb 25%, transparent 25%), 
                      linear-gradient(-45deg, #bbb 25%, transparent 25%), 
                      linear-gradient(45deg, transparent 75%, #bbb 75%), 
                      linear-gradient(-45deg, transparent 75%, #bbb 75%);
    background-size: 8px 8px;
    background-position: 0 0, 0 4px, 4px -4px, -4px 0;
    background-color: #eee;
}

.preset-color[data-color="transparent"].active::after {
    content: '';
    position: absolute;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--primary-color);
}

.color-white {
    background-color: #ffffff;
}

.color-black {
    background-color: #000000;
}

.color-custom-btn {
    border: 1px dashed rgba(255, 255, 255, 0.3);
    color: var(--text-secondary);
}

.color-custom-btn svg {
    width: 14px;
    height: 14px;
}

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

.hex-text {
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-secondary);
    font-size: 13px;
    font-family: monospace;
    flex: 1;
    text-align: right;
}

/* Size Selection Checkboxes */
.btn-link {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 11px;
    font-weight: 500;
    cursor: pointer;
    text-decoration: underline;
    transition: var(--transition-smooth);
}

.btn-link:hover {
    color: var(--primary-color);
}

.sizes-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}

@media (max-width: 480px) {
    .sizes-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.size-checkbox {
    cursor: pointer;
    position: relative;
}

.size-checkbox input[type="checkbox"] {
    position: absolute;
    opacity: 0;
}

.size-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 12px 6px;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.06);
    text-align: center;
    transition: var(--transition-smooth);
    min-height: 64px;
}

.size-checkbox:hover .size-box {
    border-color: rgba(255, 255, 255, 0.15);
    background: rgba(255, 255, 255, 0.04);
}

.size-checkbox input[type="checkbox"]:checked + .size-box {
    border-color: var(--primary-color);
    background: rgba(16, 185, 129, 0.05);
    box-shadow: 0 0 10px rgba(16, 185, 129, 0.1) inset;
}

.size-px {
    font-size: 12px;
    font-weight: 700;
    color: var(--text-primary);
}

.size-checkbox input[type="checkbox"]:checked + .size-box .size-px {
    color: var(--primary-color);
}

.size-label {
    font-size: 9px;
    color: var(--text-secondary);
    margin-top: 4px;
    white-space: nowrap;
}

/* --- Action Buttons --- */
.btn-generate {
    margin-top: 10px;
    width: 100%;
    background: var(--primary-gradient);
    color: #07090e;
    border: none;
    outline: none;
    border-radius: var(--radius-md);
    padding: 16px;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    box-shadow: var(--shadow-glow);
    transition: var(--transition-smooth);
}

.btn-generate:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 0 25px rgba(16, 185, 129, 0.35);
    filter: brightness(1.05);
}

.btn-generate:active:not(:disabled) {
    transform: translateY(0);
}

.btn-generate:disabled {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-muted);
    cursor: not-allowed;
    box-shadow: none;
}

.btn-icon {
    width: 16px;
    height: 16px;
    fill: currentColor;
}

.mini-icon {
    width: 14px;
    height: 14px;
    vertical-align: middle;
}

/* --- Right Column: Previews Area --- */
.empty-state {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    gap: 16px;
    padding: 40px 20px;
    border: 1px dashed rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.01);
}

.empty-icon {
    width: 48px;
    height: 48px;
    color: var(--text-muted);
}

.empty-state p {
    font-size: 13px;
    color: var(--text-secondary);
    max-width: 280px;
}

.active-preview {
    display: flex;
    flex-direction: column;
    gap: 20px;
    flex: 1;
}

/* --- Download Premium Banner --- */
.download-banner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: linear-gradient(90deg, rgba(16, 185, 129, 0.1) 0%, rgba(6, 182, 212, 0.08) 100%);
    border: 1px solid rgba(16, 185, 129, 0.25);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    gap: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    animation: slide-down 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slide-down {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 580px) {
    .download-banner {
        flex-direction: column;
        align-items: stretch;
    }
}

.banner-info {
    display: flex;
    align-items: center;
    gap: 14px;
}

.check-icon-wrapper {
    background: var(--primary-gradient);
    border-radius: 50%;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 10px rgba(16, 185, 129, 0.4);
}

.check-icon {
    width: 14px;
    height: 14px;
    color: #07090e;
}

.banner-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-primary);
}

.banner-desc {
    font-size: 11px;
    color: var(--text-secondary);
}

.btn-download-ico {
    background: var(--primary-gradient);
    color: #07090e;
    border: none;
    outline: none;
    border-radius: var(--radius-sm);
    padding: 10px 18px;
    font-size: 13px;
    font-weight: 700;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition-smooth);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.15);
    white-space: nowrap;
}

.btn-download-ico:hover {
    box-shadow: 0 4px 16px rgba(16, 185, 129, 0.3);
    transform: translateY(-1px);
}

/* --- Previews Grid --- */
.previews-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: 12px;
}

.preview-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
    padding: 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    transition: var(--transition-smooth);
}

.preview-card:hover {
    border-color: rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.04);
}

.canvas-container {
    width: 100%;
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(255, 255, 255, 0.04);
    
    /* Modern checkerboard pattern */
    background-image: linear-gradient(45deg, #111524 25%, transparent 25%), 
                      linear-gradient(-45deg, #111524 25%, transparent 25%), 
                      linear-gradient(45deg, transparent 75%, #111524 75%), 
                      linear-gradient(-45deg, transparent 75%, #111524 75%);
    background-size: 16px 16px;
    background-position: 0 0, 0 8px, 8px -8px, -8px 0;
    background-color: #080c16;
    overflow: hidden;
}

.canvas-container canvas {
    max-width: 90%;
    max-height: 90%;
    object-fit: contain;
    image-rendering: pixelated; /* To see pixels clearly on 16x16 / 32x32 */
    filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.3));
}

/* Large sizes can be smoothed a bit */
.canvas-container[data-size="128"] canvas,
.canvas-container[data-size="256"] canvas,
.canvas-container[data-size="512"] canvas,
.canvas-container[data-size="1024"] canvas {
    image-rendering: auto;
}

.preview-card-title {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-primary);
}

.preview-card-actions {
    display: flex;
    gap: 6px;
    width: 100%;
}

.btn-download-card {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.06);
    color: var(--text-secondary);
    flex: 1;
    padding: 6px;
    font-size: 10px;
    font-weight: 500;
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    transition: var(--transition-smooth);
}

.btn-download-card:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.15);
}

.btn-download-card:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* --- Footer Section --- */
.app-footer {
    text-align: center;
    padding: 24px 0 10px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.04);
    margin-top: 32px;
}

.app-footer p {
    font-size: 11px;
    color: var(--text-muted);
}