/* ============================================
   OGP Maker Pro - Premium CSS Design System
   ============================================ */

:root {
    /* Color Palette */
    --bg-primary: #0d0d0f;
    --bg-secondary: #141418;
    --bg-tertiary: #1a1a20;
    --bg-elevated: #22222a;

    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --text-muted: #606070;

    --accent-primary: #6366f1;
    --accent-secondary: #818cf8;
    --accent-glow: rgba(99, 102, 241, 0.3);

    --x-blue: #1d9bf0;
    --success: #22c55e;
    --warning: #f59e0b;
    --error: #ef4444;

    /* Glass Effect */
    --glass-bg: rgba(30, 30, 40, 0.7);
    --glass-border: rgba(255, 255, 255, 0.08);

    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 20px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
    --transition-slow: 0.4s ease;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 30px var(--accent-glow);
}

/* Reset & Base */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html,
body {
    height: 100%;
    overflow: hidden;
}

body {
    font-family: 'Inter', 'Noto Sans JP', -apple-system, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* App Container */
.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    background:
        radial-gradient(ellipse at 20% 20%, rgba(99, 102, 241, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(129, 140, 248, 0.05) 0%, transparent 50%),
        var(--bg-primary);
}

/* ============================================
   Header
   ============================================ */
.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    z-index: 100;
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

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

.logo-icon {
    font-size: 24px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: pulse-glow 2s ease infinite;
}

@keyframes pulse-glow {

    0%,
    100% {
        filter: drop-shadow(0 0 8px var(--accent-glow));
    }

    50% {
        filter: drop-shadow(0 0 16px var(--accent-glow));
    }
}

.logo-text {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.version-badge {
    padding: 3px 10px;
    font-size: 11px;
    font-weight: 600;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border-radius: 20px;
    color: white;
}

.header-center {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.frame-switcher {
    display: flex;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    padding: 4px;
    gap: 4px;
}

.frame-btn {
    padding: 8px 24px;
    font-size: 13px;
    font-weight: 600;
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-fast);
}

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

.frame-btn.active {
    background: var(--accent-primary);
    color: white;
    box-shadow: var(--shadow-glow);
}

.header-right {
    display: flex;
    gap: var(--spacing-sm);
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 10px 20px;
    font-size: 13px;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-fast);
}

.btn-icon {
    font-size: 14px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
}

.btn-secondary:hover {
    background: var(--bg-elevated);
    border-color: var(--accent-primary);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--glass-border);
}

.btn-ghost:hover {
    color: var(--text-primary);
    border-color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.03);
}

.btn-export {
    flex: 1;
    flex-direction: column;
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--glass-border);
    color: var(--text-secondary);
}

.btn-export:hover {
    background: var(--bg-elevated);
    border-color: var(--accent-primary);
    color: var(--text-primary);
}

.export-icon {
    font-size: 24px;
    margin-bottom: var(--spacing-xs);
}

.full-width {
    width: 100%;
}

/* ============================================
   Main Content - 3 Column Layout
   ============================================ */
.main-content {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* Panels */
.panel {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border-right: 1px solid var(--glass-border);
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--bg-elevated) transparent;
}

.panel::-webkit-scrollbar {
    width: 6px;
}

.panel::-webkit-scrollbar-thumb {
    background: var(--bg-elevated);
    border-radius: 3px;
}

.panel-left {
    width: 280px;
    min-width: 280px;
}

.panel-right {
    width: 320px;
    min-width: 320px;
    border-right: none;
    border-left: 1px solid var(--glass-border);
}

.panel-section {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--glass-border);
}

.section-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

/* ============================================
   Upload Zone
   ============================================ */
.upload-zone {
    border: 2px dashed var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    cursor: pointer;
    transition: var(--transition-normal);
    background: rgba(255, 255, 255, 0.02);
}

.upload-zone:hover {
    border-color: var(--accent-primary);
    background: rgba(99, 102, 241, 0.05);
}

.upload-icon {
    width: 50px;
    height: 50px;
    margin: 0 auto var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: var(--accent-primary);
    background: rgba(99, 102, 241, 0.1);
    border-radius: 50%;
}

.upload-zone p {
    font-size: 12px;
    color: var(--text-muted);
    line-height: 1.6;
}

/* ============================================
   Controls
   ============================================ */
.control-group {
    margin-bottom: var(--spacing-md);
}

.control-group:last-child {
    margin-bottom: 0;
}

.control-group label {
    display: block;
    font-size: 11px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.control-row {
    display: flex;
    gap: var(--spacing-md);
}

.control-group.half {
    flex: 1;
}

.slider-row {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.slider-value {
    min-width: 50px;
    font-size: 12px;
    font-weight: 600;
    color: var(--accent-secondary);
    text-align: right;
}

/* Range Slider */
input[type="range"] {
    flex: 1;
    height: 4px;
    -webkit-appearance: none;
    appearance: none;
    background: var(--bg-tertiary);
    border-radius: 2px;
    cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.4);
    transition: var(--transition-fast);
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

/* Number Input */
.input-number {
    width: 100%;
    padding: 10px 12px;
    font-size: 13px;
    font-family: inherit;
    background: var(--bg-tertiary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    transition: var(--transition-fast);
}

.input-number:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

/* Text Input */
.text-input {
    width: 100%;
    padding: 10px 14px;
    font-size: 13px;
    font-family: inherit;
    background: var(--bg-tertiary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    transition: var(--transition-fast);
}

.text-input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.text-input::placeholder {
    color: var(--text-muted);
}

.textarea {
    min-height: 80px;
    resize: vertical;
}

.char-count {
    display: block;
    font-size: 10px;
    color: var(--text-muted);
    text-align: right;
    margin-top: 4px;
}

/* Select */
.select-input {
    width: 100%;
    padding: 10px 14px;
    font-size: 13px;
    font-family: inherit;
    background: var(--bg-tertiary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition-fast);
}

.select-input:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.hint-text {
    font-size: 11px;
    color: var(--text-muted);
    margin-bottom: var(--spacing-md);
    padding: 8px 12px;
    background: rgba(99, 102, 241, 0.1);
    border-radius: var(--radius-sm);
    border-left: 3px solid var(--accent-primary);
}

/* ============================================
   Canvas Area (Pro Max Upgrade)
   ============================================ */
.canvas-area {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-primary);
    background-image:
        radial-gradient(circle at 2px 2px, var(--bg-tertiary) 1px, transparent 0);
    background-size: 32px 32px;
    padding: var(--spacing-xl);
    overflow: auto;
}

.canvas-viewport {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-lg);
    width: 100%;
}

/* Toolbar Top (Ratio Switcher) */
.canvas-toolbar-top {
    z-index: 10;
}

.ratio-switcher {
    display: flex;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    padding: 4px;
    border-radius: var(--radius-xl);
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-md);
    gap: 4px;
}

.ratio-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    background: transparent;
    border: none;
    border-radius: 40px;
    cursor: pointer;
    transition: var(--transition-normal);
}

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

.ratio-btn.active {
    background: var(--accent-primary);
    color: white;
    box-shadow: 0 4px 12px var(--accent-glow);
}

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

/* Canvas Container */
.canvas-main-container {
    position: relative;
    width: 800px;
    /* Base width */
    height: 419px;
    /* Base height (1.91:1) */
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg), 0 0 0 1px var(--glass-border);
    transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1),
        height 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.canvas-main-container.square {
    width: 600px;
    height: 600px;
}

#mainCanvas {
    width: 100%;
    height: 100%;
    display: block;
}

/* Upload Overlay */
.canvas-upload-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(13, 13, 15, 0.6);
    backdrop-filter: blur(8px);
    cursor: pointer;
    transition: var(--transition-normal);
    opacity: 1;
    z-index: 5;
}

.canvas-upload-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.overlay-content {
    text-align: center;
    transform: translateY(0);
    transition: var(--transition-normal);
}

.canvas-upload-overlay:hover .overlay-content {
    transform: translateY(-5px);
}

.overlay-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    color: white;
    box-shadow: 0 8px 24px var(--accent-glow);
}

.overlay-text h3 {
    font-size: 18px;
    margin-bottom: 8px;
}

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

/* Toolbar Bottom (Floating Controls) */
.canvas-toolbar-bottom {
    z-index: 10;
}

.floating-controls {
    display: flex;
    align-items: center;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    padding: 6px;
    border-radius: 50px;
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-md);
    gap: 8px;
}

.mini-frame-switcher {
    display: flex;
    gap: 4px;
}

.mini-frame-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 700;
    color: var(--text-secondary);
    background: var(--bg-elevated);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition-normal);
}

.mini-frame-btn.active {
    background: var(--accent-primary);
    color: white;
}

.divider {
    width: 1px;
    height: 24px;
    background: var(--glass-border);
}

.mini-play-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-elevated);
    color: var(--text-primary);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition-normal);
}

.mini-play-btn:hover {
    background: var(--bg-tertiary);
    color: var(--accent-primary);
}

.mini-play-btn.playing {
    background: var(--accent-primary);
    color: white;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 var(--accent-glow);
    }

    70% {
        box-shadow: 0 0 0 10px rgba(99, 102, 241, 0);
    }

    100% {
        box-shadow: 0 0 0 0 rgba(99, 102, 241, 0);
    }
}

.mosaic-cursor {
    position: absolute;
    pointer-events: none;
    width: 40px;
    height: 40px;
    border: 2px solid var(--accent-primary);
    border-radius: 50%;
    opacity: 0;
    transform: translate(-50%, -50%);
    transition: opacity 0.1s;
    z-index: 100;
}

.canvas-hints {
    display: flex;
    gap: var(--spacing-lg);
    font-size: 11px;
    color: var(--text-muted);
}

.canvas-hints span {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

/* ============================================
   X Card Preview
   ============================================ */
.x-card-preview {
    padding: var(--spacing-md);
    background: #000;
    border-radius: var(--radius-lg);
}

.x-card {
    background: #16181c;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid #2f3336;
    transition: var(--transition-normal);
}

.x-card:hover {
    border-color: #536471;
}

.x-card-image {
    aspect-ratio: 1.91 / 1;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

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

.x-card-content {
    padding: 12px;
}

.x-card-domain {
    font-size: 13px;
    color: #71767b;
    margin-bottom: 2px;
}

.x-card-title {
    font-size: 15px;
    font-weight: 400;
    color: #e7e9ea;
    margin-bottom: 4px;
    line-height: 1.3;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.x-card-description {
    font-size: 13px;
    color: #71767b;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ============================================
   Export Options
   ============================================ */
.export-options {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

/* ============================================
   Status Bar
   ============================================ */
.status-bar {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--bg-secondary);
    border-top: 1px solid var(--glass-border);
    font-size: 11px;
    color: var(--text-muted);
}

.status-left,
.status-right {
    display: flex;
    gap: var(--spacing-lg);
}

.status-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

/* ============================================
   Toast Notification
   ============================================ */
.toast {
    position: fixed;
    bottom: 80px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    padding: 12px 24px;
    background: var(--bg-elevated);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    font-size: 13px;
    color: var(--text-primary);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
    z-index: 1000;
}

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

/* ============================================
   Animations
   ============================================ */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

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

.panel-section {
    animation: fadeIn 0.4s ease backwards;
}

.panel-left .panel-section:nth-child(1) {
    animation-delay: 0.05s;
}

.panel-left .panel-section:nth-child(2) {
    animation-delay: 0.1s;
}

.panel-left .panel-section:nth-child(3) {
    animation-delay: 0.15s;
}

.panel-left .panel-section:nth-child(4) {
    animation-delay: 0.2s;
}

.panel-right .panel-section:nth-child(1) {
    animation-delay: 0.1s;
}

.panel-right .panel-section:nth-child(2) {
    animation-delay: 0.15s;
}

.panel-right .panel-section:nth-child(3) {
    animation-delay: 0.2s;
}

.panel-right .panel-section:nth-child(4) {
    animation-delay: 0.25s;
}

/* Canvas entrance animation */
.canvas-container {
    animation: canvasEnter 0.6s ease backwards;
    animation-delay: 0.2s;
}

@keyframes canvasEnter {
    from {
        opacity: 0;
        transform: scale(0.95);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* ============================================
   Responsive (optional future)
   ============================================ */
@media (max-width: 1200px) {
    .panel-left {
        width: 240px;
        min-width: 240px;
    }

    .panel-right {
        width: 280px;
        min-width: 280px;
    }

    .canvas-container {
        width: 480px;
        height: 252px;
    }
}