/* ================================
   CSS Variables & Root Styles
   ================================ */
:root {
    /* 그라디언트 색상 팔레트 */
    --primary-gradient: linear-gradient(135deg, #5e6ad2, #3b4ec9);
    --purple-gradient: linear-gradient(135deg, #667eea, #764ba2);
    --pink-gradient: linear-gradient(135deg, #f093fb, #f5576c);
    --orange-gradient: linear-gradient(135deg, #fa709a, #fee140);
    --green-gradient: linear-gradient(135deg, #00d26a, #00a854);
    --cyan-gradient: linear-gradient(135deg, #00c9ff, #92fe9d);
    --red-gradient: linear-gradient(135deg, #fc466b, #3f5efb);
    --dark-gradient: linear-gradient(135deg, #434343, #000000);
    --gold-gradient: linear-gradient(135deg, #ffd700, #ffb347);
    --sunset-gradient: linear-gradient(135deg, #ff6b6b, #ffd93d);
    --ocean-gradient: linear-gradient(135deg, #1e3c72, #2a5298);
    --forest-gradient: linear-gradient(135deg, #134e5e, #71b280);
    --fire-gradient: linear-gradient(135deg, #ff0844, #ffb199);
    --ice-gradient: linear-gradient(135deg, #a8edea, #fed6e3);
    --galaxy-gradient: linear-gradient(135deg, #654ea3, #eaafc8);
    --neon-gradient: linear-gradient(135deg, #00ffff, #ff00ff);
    
    /* 기본 색상 */
    --bg-primary: #08090a;
    --bg-surface: #17181a;
    --bg-surface-light: #1f2024;
    --text-primary: #f7f8f8;
    --text-secondary: #8a8f98;
    --text-accent: #5e6ad2;
    --border-color: rgba(255, 255, 255, 0.1);
    --border-hover: rgba(255, 255, 255, 0.2);
    
    /* 간격 */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    
    /* 보더 반경 */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 20px;
    
    /* 그림자 */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.4);
    
    /* 애니메이션 */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.2s ease;
    --transition-slow: 0.3s ease;
}

/* ================================
   Base Styles & Reset
   ================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

*::before,
*::after {
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* ================================
   Layout Components
   ================================ */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-lg) var(--spacing-md);
    min-height: 100vh;
}

.header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.header h1 {
    font-size: clamp(28px, 5vw, 42px);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    color: var(--text-secondary);
    font-size: clamp(14px, 2vw, 18px);
    font-weight: 400;
}

.main-content {
    width: 100%;
}

.content-wrapper {
    display: grid;
    grid-template-columns: 380px 1fr;
    gap: var(--spacing-xl);
    align-items: stretch;
    height: calc(100vh - 180px);
}

/* ================================
   Mobile Navigation Tabs
   ================================ */
.mobile-tabs {
    display: none;
    background: var(--bg-surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xs);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
}

.tab-btn {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 14px;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
}

.tab-btn:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.tab-btn.active {
    background: var(--primary-gradient);
    color: white;
    font-weight: 600;
}

/* ================================
   Control Panel
   ================================ */
.control-panel {
    background: var(--bg-surface);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-xl);
    height: 100%;
    overflow-y: auto;
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

.panel-header h2 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
}

.collapse-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 18px;
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.collapse-btn:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.control-group {
    margin-bottom: var(--spacing-lg);
}

.control-label {
    font-size: 12px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 600;
}

.style-count,
.color-count {
    color: var(--text-accent);
    font-weight: 500;
    font-size: 11px;
}

/* ================================
   Form Elements
   ================================ */
.text-input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 16px;
    font-weight: 500;
    transition: all var(--transition-normal);
    font-family: inherit;
}

.text-input:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--text-accent);
    box-shadow: 0 0 0 3px rgba(94, 106, 210, 0.1);
}

.text-input::placeholder {
    color: var(--text-secondary);
    opacity: 0.8;
}

.search-input {
    width: 100%;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 13px;
    margin-bottom: var(--spacing-sm);
    transition: all var(--transition-normal);
}

.search-input:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.06);
    border-color: var(--text-accent);
}

.search-input::placeholder {
    color: var(--text-secondary);
    opacity: 0.7;
}

/* ================================
   Style Grid
   ================================ */
.style-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xs);
    max-height: 320px;
    overflow-y: auto;
    padding: var(--spacing-xs);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.02);
}

.style-grid::-webkit-scrollbar {
    width: 6px;
}

.style-grid::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.03);
    border-radius: 3px;
}

.style-grid::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
}

.style-grid::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.15);
}

.style-btn {
    padding: var(--spacing-xs);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 11px;
    cursor: pointer;
    transition: all var(--transition-normal);
    font-family: 'JetBrains Mono', monospace;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-weight: 500;
    position: relative;
}

.style-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    border-color: var(--border-hover);
    transform: translateY(-1px);
}

.style-btn.active {
    background: var(--primary-gradient);
    color: white;
    border-color: transparent;
    font-weight: 600;
    box-shadow: var(--shadow-sm);
}

/* ================================
   Color Grid
   ================================ */
.color-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--spacing-xs);
    max-height: 200px;
    overflow-y: auto;
    padding: var(--spacing-xs);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.02);
}

.color-grid::-webkit-scrollbar {
    width: 6px;
}

.color-grid::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.03);
    border-radius: 3px;
}

.color-grid::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
}

.color-btn {
    width: 100%;
    aspect-ratio: 1;
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.color-btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: inherit;
    border-radius: inherit;
    transition: all var(--transition-normal);
}

.color-btn:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-md);
}

.color-btn.active {
    border-color: white;
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.3);
    transform: scale(1.05);
}

/* ================================
   Sliders
   ================================ */
.slider-container {
    padding: var(--spacing-sm) 0;
}

.size-slider {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: rgba(255, 255, 255, 0.1);
    outline: none;
    -webkit-appearance: none;
    cursor: pointer;
    margin: var(--spacing-sm) 0;
}

.size-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--primary-gradient);
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.size-slider::-webkit-slider-thumb:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-md);
}

.size-slider::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--primary-gradient);
    cursor: pointer;
    border: none;
    box-shadow: var(--shadow-sm);
}

.size-value {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 500;
}

/* ================================
   Checkboxes
   ================================ */
.option-group {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

/* 태그라인 컨트롤 */
.tagline-controls {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.tagline-input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 14px;
    transition: all var(--transition-normal);
}

.tagline-input:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.tagline-position {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) 0;
}

.radio-option {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    cursor: pointer;
    font-size: 14px;
    color: var(--text-secondary);
}

.radio-option input[type="radio"] {
    cursor: pointer;
}

.radio-option input[type="radio"]:checked + span {
    color: var(--text-primary);
    font-weight: 500;
}

.option-checkbox {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.option-checkbox:hover {
    background: rgba(255, 255, 255, 0.05);
}

.option-checkbox input {
    display: none;
}

.checkmark {
    width: 18px;
    height: 18px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
    position: relative;
}

.checkmark::after {
    content: '✓';
    color: white;
    font-size: 12px;
    font-weight: bold;
    opacity: 0;
    transform: scale(0.7);
    transition: all var(--transition-normal);
}

.option-checkbox input:checked + .checkmark {
    background: var(--primary-gradient);
    border-color: transparent;
}

.option-checkbox input:checked + .checkmark::after {
    opacity: 1;
    transform: scale(1);
}

.option-checkbox span:last-child {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
    transition: color var(--transition-normal);
}

.option-checkbox:hover span:last-child {
    color: var(--text-primary);
}

/* ================================
   Preview Section
   ================================ */
.preview-section {
    background: var(--bg-surface);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

.preview-header h2 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
}

.preview-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.action-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 14px;
    min-width: 44px;
    justify-content: center;
}

.random-btn {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
}

.random-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(102, 126, 234, 0.4);
}

.reset-btn {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.reset-btn:hover {
    background: rgba(255, 255, 255, 0.15);
    color: var(--text-primary);
    border-color: var(--border-hover);
    transform: translateY(-1px);
}

.preview-area {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xl);
    flex: 1;
    overflow-y: auto;
    position: relative;
}

.logo-container {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 512px;
    height: 512px;
    max-width: 100%;
    padding: var(--spacing-lg);
    position: relative;
}

#logoCanvas {
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-normal);
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

#logoCanvas:hover {
    box-shadow: var(--shadow-xl);
}

.download-section {
    text-align: center;
    width: 100%;
    margin-top: var(--spacing-lg);
}

.download-section h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.download-buttons {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

.download-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: var(--radius-md);
    color: white;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 14px;
    min-width: 80px;
    justify-content: center;
}

.png-btn {
    background: var(--primary-gradient);
}

.png-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(94, 106, 210, 0.4);
}

.svg-btn {
    background: linear-gradient(135deg, #f093fb, #f5576c);
}

.svg-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(240, 147, 251, 0.4);
}

.copy-btn {
    background: linear-gradient(135deg, #00d26a, #00a854);
}

.copy-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 210, 106, 0.4);
}

/* ================================
   Template Section
   ================================ */
.template-section {
    grid-column: 1 / -1;
    background: var(--bg-surface);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-xl);
    margin-top: var(--spacing-xl);
    box-shadow: var(--shadow-md);
}

/* 템플릿 인라인 (미리보기 섹션 내부) */
.template-inline {
    margin-top: auto;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    width: 100%;
}

.template-inline .template-header {
    margin-bottom: var(--spacing-sm);
}

.template-inline .template-header h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.template-inline .template-desc {
    font-size: 12px;
    color: var(--text-secondary);
}

.template-inline .template-grid {
    grid-template-columns: repeat(8, 1fr);
    gap: var(--spacing-xs);
}

.template-inline .template-preview {
    font-size: 14px;
    font-weight: 600;
    padding: 8px;
}

.template-inline .template-item {
    padding: 4px;
}

.template-inline .template-name {
    font-size: 11px;
}

.template-inline .template-style {
    font-size: 10px;
}

@media (max-width: 768px) {
    .template-inline .template-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.template-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.template-header h2 {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.template-desc {
    color: var(--text-secondary);
    font-size: 14px;
}

.template-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--spacing-md);
}

.template-item {
    cursor: pointer;
    transition: all var(--transition-normal);
    text-align: center;
    padding: var(--spacing-sm);
    border-radius: var(--radius-lg);
    border: 2px solid transparent;
}

.template-item:hover {
    transform: translateY(-4px);
    background: rgba(255, 255, 255, 0.03);
    border-color: var(--border-color);
}

.template-item:active {
    transform: translateY(-2px);
}

.template-preview {
    width: 100%;
    aspect-ratio: 1;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    font-weight: 800;
    color: white;
    margin-bottom: var(--spacing-sm);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

.template-item:hover .template-preview {
    box-shadow: var(--shadow-lg);
}

.template-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

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

.template-style {
    font-size: 11px;
    color: var(--text-secondary);
    font-family: 'JetBrains Mono', monospace;
    opacity: 0.8;
}

/* ================================
   Footer
   ================================ */
.footer {
    margin-top: var(--spacing-3xl);
    padding: var(--spacing-xl) 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(0, 0, 0, 0.3);
}

.footer-content {
    text-align: center;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.footer-content p {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: var(--spacing-sm);
}

.footer-tagline {
    color: var(--text-primary);
    font-size: 12px;
    margin-bottom: var(--spacing-md);
    opacity: 0.8;
}

.footer-links {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.footer-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 13px;
    transition: color var(--transition-normal);
}

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

.footer-separator {
    color: var(--text-secondary);
    opacity: 0.3;
}

/* ================================
   Toast & Loading
   ================================ */
.toast {
    position: fixed;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: rgba(16, 185, 129, 0.95);
    backdrop-filter: blur(10px);
    color: white;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    font-weight: 600;
    opacity: 0;
    transition: all var(--transition-slow);
    z-index: 1000;
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

.toast.error {
    background: rgba(239, 68, 68, 0.95);
}

.toast.warning {
    background: rgba(245, 158, 11, 0.95);
}

.toast-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.toast-icon {
    font-size: 16px;
}

.toast-text {
    font-size: 14px;
}

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(8, 9, 10, 0.8);
    backdrop-filter: blur(5px);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 2000;
}

.loading-spinner {
    text-align: center;
    color: var(--text-primary);
}

.spinner {
    width: 48px;
    height: 48px;
    border: 4px solid rgba(255, 255, 255, 0.1);
    border-left-color: var(--text-accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--spacing-md);
}

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

.loading-text {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
}

/* ================================
   Utility Classes
   ================================ */
.desktop-only {
    display: block;
}

.mobile-only {
    display: none;
}

.desktop-text {
    display: inline;
}

.mobile-text {
    display: none;
}

.hidden {
    display: none !important;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ================================
   Responsive Design
   ================================ */

/* Large Tablets (768px - 1024px) */
@media (max-width: 1024px) {
    .content-wrapper {
        grid-template-columns: 320px 1fr;
        gap: var(--spacing-lg);
    }
    
    .control-panel {
        padding: var(--spacing-lg);
    }
    
    .preview-section {
        padding: var(--spacing-lg);
    }
    
    .template-grid {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
        gap: var(--spacing-sm);
    }
}

/* Tablets (768px) */
@media (max-width: 768px) {
    .container {
        padding: var(--spacing-md) var(--spacing-sm);
    }
    
    .content-wrapper {
        display: block;
        height: auto;
    }
    
    .control-panel {
        height: auto;
    }
    
    .preview-section {
        height: auto;
    }
    
    .mobile-tabs {
        display: flex;
    }
    
    .desktop-only {
        display: none;
    }
    
    .mobile-only {
        display: block;
    }
    
    .desktop-text {
        display: none;
    }
    
    .mobile-text {
        display: inline;
    }
    
    .control-panel,
    .preview-section,
    .template-section {
        display: none;
        position: static;
        max-height: none;
        overflow: visible;
    }
    
    .control-panel.active,
    .preview-section.active,
    .template-section.active {
        display: block;
        margin-bottom: var(--spacing-lg);
    }
    
    .template-section.active {
        margin-top: 0;
    }
    
    .style-grid {
        grid-template-columns: repeat(2, 1fr);
        max-height: 280px;
    }
    
    .color-grid {
        grid-template-columns: repeat(5, 1fr);
    }
    
    .option-group {
        justify-content: center;
    }
    
    .preview-actions {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .download-buttons {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-sm);
    }
    
    .download-btn {
        width: 100%;
        max-width: 200px;
    }
    
    .template-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Mobile Phones (480px) */
@media (max-width: 480px) {
    .container {
        padding: var(--spacing-sm);
    }
    
    .header {
        margin-bottom: var(--spacing-lg);
    }
    
    .control-panel,
    .preview-section,
    .template-section {
        padding: var(--spacing-md);
        border-radius: var(--radius-xl);
    }
    
    .style-grid {
        grid-template-columns: 1fr;
        max-height: 240px;
    }
    
    .style-btn {
        padding: var(--spacing-sm);
        font-size: 12px;
    }
    
    .color-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .preview-area {
        min-height: 300px;
        padding: var(--spacing-md);
    }
    
    .logo-container {
        width: 350px;
        height: 350px;
        padding: var(--spacing-md);
    }
    
    #logoCanvas {
        /* 모바일에서도 중앙 정렬 유지 */
    }
    
    .action-btn {
        padding: var(--spacing-sm);
        min-width: 40px;
    }
    
    .template-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }
    
    .template-item {
        padding: var(--spacing-sm);
    }
    
    .template-preview {
        font-size: 24px;
    }
}

/* Small Mobile Phones (360px) */
@media (max-width: 360px) {
    .mobile-tabs {
        padding: 2px;
    }
    
    .tab-btn {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: 12px;
    }
    
    .control-panel,
    .preview-section,
    .template-section {
        padding: var(--spacing-sm);
    }
    
    .style-grid,
    .color-grid {
        max-height: 200px;
    }
    
    .color-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    #logoCanvas {
        max-width: 240px;
        max-height: 240px;
    }
    
    .toast {
        left: var(--spacing-sm);
        right: var(--spacing-sm);
        transform: translateY(100px);
        max-width: none;
    }
    
    .toast.show {
        transform: translateY(0);
    }
}

/* High DPI Displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    #logoCanvas {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .spinner {
        animation: none;
    }
}

/* Dark Theme Support (if user prefers light theme, we could add support) */
@media (prefers-color-scheme: light) {
    /* Currently optimized for dark theme only */
}