/* ==================== Figtree Font ==================== */
@import url('https://fonts.googleapis.com/css2?family=Figtree:wght@400;500;600;700&display=swap');

/* ==================== Variables (8px Grid System) ==================== */
:root {
    /* 8px Grid System */
    --unit: 8px;
    --space-0_5: calc(var(--unit) * 0.5);   /* 4px */
    --space-1: calc(var(--unit) * 1);   /* 8px */
    --space-2: calc(var(--unit) * 2);   /* 16px */
    --space-3: calc(var(--unit) * 3);   /* 24px */
    --space-4: calc(var(--unit) * 4);   /* 32px */
    --space-5: calc(var(--unit) * 5);   /* 40px */
    --space-6: calc(var(--unit) * 6);   /* 48px */

    /* Typography (8px grid) */
    --font-h1: 24px;              /* Title */
    --font-h2: 16px;              /* H2 */
    --font-body: 14px;            /* Body */
    --font-body-small: 12px;      /* Body Small / Uppercase */

    --weight-regular: 400;
    --weight-medium: 500;
    --weight-semibold: 600;
    --weight-bold: 700;

    /* Light Mode Colors (Default) */
    --primary-color: #000;
    --secondary-color: #666;
    --accent-color: #0066cc;
    --success-color: #22c55e;
    --error-color: #ef4444;
    --warning-color: #f59e0b;
    --bg-color: #fafafa;
    --panel-bg: #fff;
    --border-color: #e0e0e0;
    --text-primary: #000;
    --text-secondary: #666;
    --text-muted: #999;
    --input-bg: #fff;
    --canvas-bg: #fff;
    --slider-track: rgba(0, 0, 0, 0.15);
    --slider-thumb: #000;

    /* Shadows */
    --shadow: 0 2px 8px rgba(0,0,0,0.1);
    --shadow-lg: 0 4px 16px rgba(0,0,0,0.15);

    /* Border Radius */
    --radius: 4px;           /* Large containers, panels, modals */
    --radius-sm: 1px;        /* Small elements, buttons, inputs */

    /* Transitions */
    --transition: all 0.2s ease;
}

/* Dark Mode Colors */
[data-theme="dark"] {
    --primary-color: #fff;
    --secondary-color: #a0a0a0;
    --accent-color: #4a9eff;
    --success-color: #34d399;
    --error-color: #f87171;
    --warning-color: #fbbf24;
    --bg-color: #0a0a0a;
    --panel-bg: #1a1a1a;
    --border-color: #2a2a2a;
    --text-primary: #fff;
    --text-secondary: #a0a0a0;
    --text-muted: #6b6b6b;
    --input-bg: #1a1a1a;
    --canvas-bg: #1a1a1a;
    --slider-track: rgba(255, 255, 255, 0.15);
    --slider-thumb: #fff;

    /* Adjusted shadows for dark mode */
    --shadow: 0 2px 8px rgba(0,0,0,0.3);
    --shadow-lg: 0 4px 16px rgba(0,0,0,0.5);
}

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

body {
    font-family: 'Figtree', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.5;
    overflow: hidden;
    font-weight: 400;
}

/* ==================== Layout ==================== */
.container {
    display: -ms-grid;
    display: grid;
    -ms-grid-columns: 360px 1fr;
    grid-template-columns: 360px 1fr;
    height: 100vh;
    min-height: 100vh;
    max-height: 100vh;
    gap: 0;
    overflow: hidden;
}

.controls {
    background: var(--panel-bg);
    padding: var(--space-3);
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
    border-right: 1px solid var(--border-color);
    box-shadow: 2px 0 8px rgba(0,0,0,0.05);
    height: 100vh;
    min-height: 100vh;
    max-height: 100vh;
    box-sizing: border-box;
}

.canvas-area {
    display: -webkit-box;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -webkit-align-items: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-pack: center;
    -webkit-justify-content: center;
    -ms-flex-pack: center;
    justify-content: center;
    padding: var(--space-5);
    background: var(--bg-color);
    position: relative;
    height: 100vh;
    box-sizing: border-box;
}

/* ==================== Header ==================== */
.header {
    margin-bottom: var(--space-2);
}

.header h1 {
    font-size: var(--font-h1);
    font-weight: var(--weight-bold);
    letter-spacing: -0.5px;
    margin-bottom: var(--space-1);
    line-height: 1.2;
}

.version {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: var(--font-body-small);
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: var(--weight-medium);
}

.version .status-dot {
    width: var(--space-1);
    height: var(--space-1);
    border-radius: 50%;
    background: var(--success-color);
    flex-shrink: 0;
    animation: none;
}


/* ==================== Sections ==================== */
.section {
    margin-bottom: var(--space-4);
}

.section h2 {
    font-size: var(--font-body-small);
    font-weight: var(--weight-semibold);
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--space-2);
}

/* ==================== Form Controls ==================== */
.control-group {
    margin-bottom: var(--space-2);
    min-height: 0;
}

label {
    display: block;
    font-size: var(--font-body-small);
    font-weight: var(--weight-medium);
    color: var(--text-secondary);
    margin-bottom: var(--space-0_5);
    line-height: 1;
}

.select-input,
.text-input {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    width: 100%;
    padding: var(--space-1) var(--space-2);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: var(--font-body);
    font-family: 'Figtree', sans-serif;
    background: var(--input-bg);
    background-color: var(--input-bg);
    color: var(--text-primary);
    transition: var(--transition);
    box-sizing: border-box;
}

/* Select dropdown arrow for Safari/Webkit */
.select-input {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23666' d='M10.293 3.293L6 7.586 1.707 3.293A1 1 0 00.293 4.707l5 5a1 1 0 001.414 0l5-5a1 1 0 10-1.414-1.414z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--space-1) center;
    background-size: 12px;
    padding-right: var(--space-4);
}

.select-input:focus,
.text-input:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.text-input[type="number"] {
    -moz-appearance: textfield;
    font-variant-numeric: tabular-nums;
}

.text-input[type="number"]::-webkit-inner-spin-button,
.text-input[type="number"]::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

/* ==================== Sliders (Japodian Echoes Style) ==================== */
.control-group label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-0_5);
    line-height: 1;
}

.slider {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    width: 100%;
    height: 4px;
    background: rgba(0, 0, 0, 0.15);
    outline: none;
    cursor: pointer;
    margin: 0;
    padding: 0;
    display: block;
    border: none;
    border-radius: 0;
}

.slider::-webkit-slider-track {
    width: 100%;
    height: 4px;
    background: transparent;
    border: none;
    border-radius: 0;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 1px;
    height: 4px;
    background: var(--slider-thumb);
    border: none;
    cursor: pointer;
    margin-top: 0;
    border-radius: 0;
}

.slider::-moz-range-track {
    width: 100%;
    height: 4px;
    background: transparent;
    border: none;
    border-radius: 0;
}

.slider::-moz-range-thumb {
    -moz-appearance: none;
    appearance: none;
    width: 1px;
    height: 4px;
    background: var(--slider-thumb);
    border: none;
    cursor: pointer;
    margin: 0;
    padding: 0;
    border-radius: 0;
}

.slider::-moz-range-progress {
    background: transparent;
}

/* File Input */
.file-input {
    width: 100%;
    padding: var(--space-2);
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-sm);
    font-size: var(--font-body-small);
    font-family: 'Figtree', sans-serif;
    cursor: pointer;
    transition: var(--transition);
}

.file-input:hover {
    border-color: var(--accent-color);
    background: #f8f9fa;
}

/* Checkboxes */
.checkbox-group {
    display: flex;
    align-items: center;
}

.checkbox-group label {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    margin: 0;
    cursor: pointer;
    user-select: none;
}

.checkbox-group input[type="checkbox"] {
    width: var(--space-2);
    height: var(--space-2);
    cursor: pointer;
    accent-color: var(--primary-color);
}

/* Help Text */
.help-text {
    font-size: var(--font-body-small);
    color: var(--text-muted);
    margin-top: var(--space-1);
    line-height: 1.4;
}

/* ==================== Buttons ==================== */
.btn {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    width: 100%;
    height: var(--space-5);          /* 40px - 8px grid */
    padding: 0 var(--space-2);
    border: none;
    border-radius: var(--radius-sm);
    font-size: var(--font-body);
    font-weight: var(--weight-semibold);
    font-family: 'Figtree', sans-serif;
    cursor: pointer;
    transition: var(--transition);
    display: -webkit-box;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -webkit-align-items: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-pack: center;
    -webkit-justify-content: center;
    -ms-flex-pack: center;
    justify-content: center;
    gap: var(--space-1);
    text-transform: none;
    box-sizing: border-box;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

.btn-icon {
    display: none;  /* Hide emoji icons */
}

.btn-primary {
    background: var(--primary-color);
    background-color: var(--primary-color);
    color: var(--panel-bg);
    margin-bottom: var(--space-1);
}

.btn-primary:hover {
    opacity: 0.85;
    -webkit-transform: translateY(-1px);
    -ms-transform: translateY(-1px);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.btn-primary:active {
    -webkit-transform: translateY(0);
    -ms-transform: translateY(0);
    transform: translateY(0);
}

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

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

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    margin-top: var(--space-1);
}

.btn-outline:hover {
    background: #f8f9fa;
}

.button-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-1);
    margin-bottom: var(--space-1);
}

/* Aspect Ratio Selector */
.aspect-ratio-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 6px;
    margin-top: 8px;
}

.aspect-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 10px 6px;
    background: var(--bg-secondary);
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: 'Figtree', sans-serif;
    font-size: 11px;
    font-weight: 500;
    color: var(--text-secondary);
}

.aspect-btn:hover {
    border-color: var(--primary-color);
    background: rgba(44, 62, 80, 0.05);
}

.aspect-btn.active {
    border: 2px solid var(--primary-color);
    background: var(--bg-secondary);
    color: var(--primary-color) !important;
}

.aspect-btn.active svg {
    stroke: var(--primary-color) !important;
}

.aspect-btn.active span {
    color: var(--primary-color) !important;
}

.aspect-btn svg {
    stroke: var(--text-secondary);
    transition: stroke 0.2s ease;
    flex-shrink: 0;
}

.aspect-btn:hover svg {
    stroke: var(--primary-color);
}

.aspect-btn.active:hover svg {
    stroke: white !important;
}

.aspect-btn span {
    font-size: 10px;
    letter-spacing: 0.02em;
    font-weight: 600;
}

/* ==================== Status Message ==================== */
.status-message {
    padding: var(--space-2);
    background: #f0f0f0;
    border-radius: var(--radius-sm);
    font-size: var(--font-body-small);
    text-align: center;
    margin-top: var(--space-2);
}

.status-message.success {
    background: #dcfce7;
    color: #166534;
}

.status-message.error {
    background: #fee2e2;
    color: #991b1b;
}

.status-message.warning {
    background: #fef3c7;
    color: #92400e;
}

/* ==================== Progress Bar ==================== */
.progress-bar {
    width: 100%;
    height: var(--space-4);
    background: #f0f0f0;
    border-radius: var(--radius-sm);
    overflow: hidden;
    position: relative;
    margin-top: var(--space-2);
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-color), var(--primary-color));
    transition: width 0.3s ease;
    width: 0%;
}

.progress-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: var(--font-body-small);
    font-weight: var(--weight-semibold);
    color: var(--text-primary);
}

/* ==================== Canvas ==================== */
.canvas-container {
    position: relative;
    background: var(--canvas-bg);
    box-shadow: var(--shadow-lg);
    border-radius: var(--radius);
}

/* Full-size mode for 3D preview */
.canvas-container.full-size {
    width: 100%;
    height: 100%;
    flex: 1 1 auto;
    align-self: stretch;
    max-width: 100%;
    max-height: 100%;
    box-shadow: none;
    border-radius: 0;
    background: var(--canvas-bg);
    padding: 0;
}

.canvas-container.full-size #preview3D {
    width: 100%;
    height: 100%;
    background: var(--canvas-bg);
    border-radius: 0;
}

body.three-d-mode .canvas-area {
    padding: 0;
    background: var(--canvas-bg);
    align-items: stretch;
}

body.three-d-mode .canvas-container {
    border-radius: 0;
}

body.three-d-mode .canvas-toolbar {
    bottom: var(--space-2);
    right: var(--space-2);
}

/* Fullscreen mode - center canvas perfectly */
.canvas-container:fullscreen {
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-color);
    border-radius: 0;
}

.canvas-container:-webkit-full-screen {
    display: -webkit-box;
    display: -webkit-flex;
    display: flex;
    -webkit-box-align: center;
    -webkit-align-items: center;
    align-items: center;
    -webkit-box-pack: center;
    -webkit-justify-content: center;
    justify-content: center;
    background: var(--bg-color);
    border-radius: 0;
}

.canvas-container:-moz-full-screen {
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-color);
    border-radius: 0;
}

.canvas-container:-ms-fullscreen {
    display: -ms-flexbox;
    -ms-flex-align: center;
    -ms-flex-pack: center;
    background: var(--bg-color);
}

#svgCanvas,
#preview3D {
    display: block;
    border-radius: var(--radius-sm);
}

#preview3D {
    cursor: grab;
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    touch-action: none;
    pointer-events: auto;
    position: relative;
    z-index: 1;
}

#preview3D:active {
    cursor: grabbing;
}

/* ==================== Canvas Toolbar ==================== */
.canvas-toolbar {
    position: absolute;
    bottom: var(--space-2);
    right: var(--space-2);
    display: flex;
    gap: var(--space-1);
    background: var(--panel-bg);
    padding: var(--space-1);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow);
    z-index: 10;
}

.tool-btn {
    width: var(--space-5);
    height: var(--space-5);
    border: 1px solid var(--border-color);
    background: var(--panel-bg);
    border-radius: var(--radius-sm);
    font-size: 18px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
}

.tool-btn:hover {
    background: var(--bg-color);
    border-color: var(--primary-color);
    transform: scale(1.05);
}

.tool-btn:active {
    transform: scale(0.95);
}

/* ==================== Scrollbar ==================== */
/* Hide scrollbar - it's obvious you can scroll */
.controls {
    scrollbar-width: none;  /* Firefox */
    -ms-overflow-style: none;  /* IE/Edge */
}

.controls::-webkit-scrollbar {
    display: none;  /* Chrome/Safari/Opera */
}

/* ==================== Responsive ==================== */
/* Mobile/Tablet: Bottom panel (below 1024px) */
@media (max-width: 1023px) {
    .container {
        display: flex;
        flex-direction: column;
        grid-template-columns: none;
        grid-template-rows: none;
    }

    .controls {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        width: 100%;
        height: auto;
        max-height: 50vh;
        min-height: auto;
        border-right: none;
        border-bottom: none;
        border-top: 1px solid var(--border-color);
        box-shadow: 0 -2px 8px rgba(0,0,0,0.1);
        z-index: 100;
        /* Smooth scrolling on touch devices */
        -webkit-overflow-scrolling: touch;
        overscroll-behavior: contain;
    }

    .canvas-area {
        flex: 1;
        padding: var(--space-3);
        padding-bottom: calc(50vh + var(--space-3));
        /* Prevent overscroll bounce on mobile */
        overscroll-behavior: contain;
    }

    /* In 3D mode, center canvas in upper half (above bottom bar) */
    body.three-d-mode .canvas-area {
        display: flex;
        align-items: center;
        justify-content: center;
        padding-bottom: 50vh;
        padding-top: 0;
    }

    body.three-d-mode .canvas-container {
        max-height: 50vh;
        width: 100%;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    body.three-d-mode #preview3D {
        max-height: 50vh;
        width: auto;
        height: auto;
        object-fit: contain;
    }

    /* Increase touch target sizes for mobile */
    .btn {
        height: 44px;
        min-height: 44px;
    }

    .tool-btn {
        width: 44px;
        height: 44px;
        min-width: 44px;
        min-height: 44px;
    }

    .select-input,
    .text-input {
        min-height: 44px;
        padding: var(--space-2);
        font-size: 16px; /* Prevents zoom on iOS */
    }

    /* Mobile sliders - 16px height for better touch targets */
    .slider {
        height: 16px;
        background: rgba(0, 0, 0, 0.15);
        margin: var(--space-2) 0;
        padding: 0;
        border-radius: 0;
        box-shadow: none !important;
        -webkit-appearance: none;
    }

    .slider::-webkit-slider-track {
        height: 16px;
        background: transparent;
        border-radius: 0;
        box-shadow: none !important;
        -webkit-appearance: none;
    }

    .slider::-webkit-slider-thumb {
        -webkit-appearance: none;
        width: 16px;
        height: 16px;
        background: var(--slider-thumb);
        border: none;
        border-radius: 0;
        margin-top: 0;
        box-shadow: none !important;
        -webkit-box-shadow: none !important;
    }

    .slider::-moz-range-track {
        height: 16px;
        background: transparent;
        border-radius: 0;
        box-shadow: none;
    }

    .slider::-moz-range-thumb {
        -moz-appearance: none;
        appearance: none;
        width: 16px;
        height: 16px;
        background: var(--slider-thumb);
        border: none;
        margin: 0;
        padding: 0;
        border-radius: 0;
        box-shadow: none;
    }

    .slider::-moz-range-progress {
        background: transparent;
    }

    /* Checkbox touch targets */
    .checkbox-group input[type="checkbox"] {
        width: 24px;
        height: 24px;
    }

    /* Better spacing for mobile */
    .section {
        margin-bottom: var(--space-3);
    }

    .control-group {
        margin-bottom: var(--space-3);
    }

    /* Canvas toolbar positioning for mobile */
    .canvas-toolbar {
        bottom: var(--space-2);
        right: var(--space-2);
        gap: var(--space-0_5);
    }

    body.three-d-mode .canvas-toolbar {
        bottom: var(--space-2);
    }
}

/* ==================== Animations ==================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.section {
    animation: fadeIn 0.3s ease;
}

/* ==================== Utilities ==================== */
.hidden {
    display: none !important;
}

.text-center {
    text-align: center;
}

.mt-4 {
    margin-top: var(--space-2);
}

.mb-4 {
    margin-bottom: var(--space-2);
}

/* ==================== Theme Toggle ==================== */
.theme-toggle {
    border: none;
    background: transparent;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 4px;
    color: var(--text-primary);
    transition: color 0.2s ease, transform 0.2s ease;
}

.theme-toggle:hover {
    color: var(--text-secondary);
}

.theme-toggle:active {
    transform: scale(0.95);
}

.theme-toggle svg {
    width: 18px;
    height: 18px;
    transition: transform 0.4s ease;
}

.theme-toggle svg path,
.theme-toggle svg circle {
    transition: fill 0.2s ease, stroke 0.2s ease;
}

/* Light mode icon state */
[data-theme="light"] .theme-toggle svg {
    transform: rotate(0deg);
}

[data-theme="dark"] .theme-toggle svg {
    transform: rotate(180deg);
}

[data-theme="light"] .theme-toggle,
[data-theme="dark"] .theme-toggle {
    color: var(--text-primary);
}

/* ==================== Authentication UI ==================== */
.header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--space-3);
}

.auth-container {
    margin-top: var(--space-1);
}

.auth-btn {
    background: var(--accent-color);
    color: white;
    border: none;
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-sm);
    font-size: var(--font-body-small);
    font-weight: var(--weight-medium);
    cursor: pointer;
    transition: var(--transition);
}

.auth-btn:hover {
    background: #0052a3;
}

.auth-btn-secondary {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    font-size: var(--font-body-small);
    cursor: pointer;
    transition: var(--transition);
    margin-left: var(--space-1);
}

.auth-btn-secondary:hover {
    background: var(--bg-color);
    border-color: var(--text-secondary);
}

.user-menu {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    flex-wrap: wrap;
}

.user-email {
    font-size: var(--font-body-small);
    color: var(--text-muted);
    display: block;
    margin-top: var(--space-1);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.user-plan {
    font-size: 10px;
    font-weight: var(--weight-semibold);
    padding: 2px 8px;
    border-radius: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.user-plan.free {
    background: var(--border-color);
    color: var(--text-secondary);
}

.user-plan.pro {
    background: #fef3c7;
    color: #92400e;
}

/* Premium feature locking */
.premium-export.locked {
    opacity: 0.6;
    cursor: not-allowed;
    position: relative;
}

.premium-export.locked::after {
    content: '🔒';
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
}

/* ==================== Paywall Modal ==================== */
.paywall-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.paywall-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(4px);
}

.paywall-content {
    position: relative;
    background: var(--panel-bg);
    padding: var(--space-5);
    border-radius: 8px;
    max-width: 480px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    text-align: center;
    z-index: 1;
}

.paywall-close {
    position: absolute;
    top: var(--space-2);
    right: var(--space-2);
    background: transparent;
    border: none;
    font-size: 32px;
    line-height: 1;
    color: var(--text-muted);
    cursor: pointer;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.paywall-close:hover {
    color: var(--text-primary);
}

.paywall-content h2 {
    margin: 0 0 var(--space-2) 0;
    font-size: 24px;
    color: var(--text-primary);
}

.paywall-content p {
    margin: 0 0 var(--space-3) 0;
    color: var(--text-secondary);
}

.paywall-features {
    text-align: left;
    margin: var(--space-4) 0;
}

.feature {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin: var(--space-2) 0;
}

.feature-icon {
    width: 20px;
    height: 20px;
    color: var(--success-color);
    flex-shrink: 0;
}

.paywall-pricing {
    font-size: 20px;
    margin: var(--space-4) 0;
    padding: var(--space-3);
    background: var(--bg-color);
    border-radius: var(--radius);
}

.paywall-pricing strong {
    color: var(--text-primary);
    font-weight: var(--weight-bold);
}

.save-badge {
    display: inline-block;
    margin-left: var(--space-1);
    font-size: var(--font-body-small);
    padding: 2px 8px;
    background: var(--success-color);
    color: white;
    border-radius: 10px;
    font-weight: var(--weight-semibold);
}

.paywall-upgrade-btn {
    width: 100%;
    background: #000000;
    color: white;
    border: none;
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius);
    font-size: var(--font-h2);
    font-weight: var(--weight-semibold);
    cursor: pointer;
    transition: var(--transition);
    margin: var(--space-2) 0;
}

.paywall-upgrade-btn:hover {
    background: #333333;
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.paywall-maybe-btn {
    width: 100%;
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius);
    font-size: var(--font-body);
    cursor: pointer;
    transition: var(--transition);
}

.paywall-maybe-btn:hover {
    background: var(--bg-color);
    border-color: var(--text-secondary);
}

/* Mobile responsiveness for paywall */
@media (max-width: 768px) {
    .paywall-content {
        padding: var(--space-3);
    }

    .user-menu {
        flex-direction: column;
        align-items: flex-end;
    }

    .auth-btn-secondary {
        margin-left: 0;
    }
}

/* ==================== Canvas Protection ==================== */
.protection-message {
    position: fixed;
    bottom: var(--space-4);
    right: var(--space-4);
    background: var(--panel-bg);
    padding: var(--space-3);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    z-index: 9999;
    animation: slideInUp 0.3s ease;
}

.protection-message.fade-out {
    animation: fadeOut 0.3s ease;
    opacity: 0;
}

.protection-message-content h3 {
    margin: 0 0 var(--space-1) 0;
    font-size: var(--font-h2);
    color: var(--text-primary);
}

.protection-message-content p {
    margin: 0 0 var(--space-2) 0;
    color: var(--text-secondary);
    font-size: var(--font-body);
}

.protection-message-content button {
    width: 100%;
    background: #000000;
    color: white;
    border: none;
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-sm);
    font-size: var(--font-body);
    font-weight: var(--weight-semibold);
    cursor: pointer;
    transition: var(--transition);
}

.protection-message-content button:hover {
    background: #333333;
}

@keyframes slideInUp {
    from {
        transform: translateY(100px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes fadeOut {
    from {
        opacity: 1;
    }
    to {
        opacity: 0;
    }
}

/* Prevent text selection on protected elements */
.user-select-none {
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
}