'use strict';

const RAW_BUILTIN_THEMES = [
    {
        name: 'Vibe',
        slug: 'vibe',
        mode: 'dark',
        description: 'OpenVibe\'s default: deep blue night with an electric-blue glow.',
        tags: ['default', 'cool', 'blue'],
        variables: {
            '--bg-primary': '#0a0f1c',
            '--bg-secondary': '#101828',
            '--bg-tertiary': '#172238',
            '--bg-card': '#131c2e',
            '--bg-hover': '#1c2a44',
            '--bg-input': '#0d1424',
            '--text-primary': '#e6edf7',
            '--text-secondary': '#96a7c2',
            '--text-muted': '#7386a3',
            '--accent': '#3b82f6',
            '--accent-light': '#60a5fa',
            '--accent-dark': '#1d4ed8',
            '--border': '#1f2d47',
            '--border-light': '#2c3d5c',
            '--live-red': '#ef4444',
            '--success': '#22c55e',
            '--warning': '#f59e0b',
            '--danger': '#ef4444',
            '--info': '#38bdf8',
            '--shadow': '0 2px 12px rgba(0,0,0,0.45)',
            '--shadow-lg': '0 8px 32px rgba(0,0,0,0.6)',
        },
    },
    {
        name: 'Violet Hour',
        slug: 'violet-hour',
        mode: 'dark',
        description: 'Charcoal and violet: the colours OpenVibe started with.',
        tags: ['classic', 'purple', 'warm'],
        variables: {
            '--bg-primary': '#0d0d0f',
            '--bg-secondary': '#16161a',
            '--bg-tertiary': '#1e1e24',
            '--bg-card': '#1a1a20',
            '--bg-hover': '#242430',
            '--bg-input': '#12121a',
            '--text-primary': '#e8e6e3',
            '--text-secondary': '#9a9a9a',
            '--text-muted': '#838282',
            '--accent': '#8b5cf6',
            '--accent-light': '#a78bfa',
            '--accent-dark': '#6d28d9',
            '--border': '#2a2a32',
            '--border-light': '#3a3a44',
            '--live-red': '#e74c3c',
            '--success': '#2ecc71',
            '--warning': '#f39c12',
            '--danger': '#e74c3c',
            '--info': '#3498db',
            '--shadow': '0 2px 12px rgba(0,0,0,0.4)',
            '--shadow-lg': '0 8px 32px rgba(0,0,0,0.6)',
        },
    },
    {
        name: 'Midnight',
        slug: 'midnight',
        mode: 'dark',
        description: 'Blue-black with steel-indigo light.',
        tags: ['cool', 'minimal', 'blue'],
        variables: {
            '--bg-primary': '#0a0e17',
            '--bg-secondary': '#111827',
            '--bg-tertiary': '#1a2235',
            '--bg-card': '#151d2e',
            '--bg-hover': '#1e2a42',
            '--bg-input': '#0d1220',
            '--text-primary': '#e2e8f0',
            '--text-secondary': '#94a3b8',
            '--text-muted': '#78879b',
            '--accent': '#6366f1',
            '--accent-light': '#818cf8',
            '--accent-dark': '#4f46e5',
            '--border': '#1e293b',
            '--border-light': '#334155',
        },
    },
    {
        name: 'Understory',
        slug: 'forest',
        mode: 'dark',
        description: 'Deep greens under the canopy.',
        tags: ['nature', 'green', 'earthy'],
        variables: {
            '--bg-primary': '#0a120a',
            '--bg-secondary': '#121e12',
            '--bg-tertiary': '#1a2a1a',
            '--bg-card': '#152015',
            '--bg-hover': '#1e3420',
            '--bg-input': '#0d160d',
            '--text-primary': '#d4e8d4',
            '--text-secondary': '#8aaa8a',
            '--text-muted': '#708e70',
            '--accent': '#4ade80',
            '--accent-light': '#86efac',
            '--accent-dark': '#22c55e',
            '--border': '#1a3a1a',
            '--border-light': '#2a4a2a',
        },
    },
    {
        name: 'Neon Tokyo',
        slug: 'neon-tokyo',
        mode: 'dark',
        description: 'Hot pink neon on wet chrome.',
        tags: ['cyberpunk', 'neon', 'vibrant'],
        variables: {
            '--bg-primary': '#0a0a0f',
            '--bg-secondary': '#12101a',
            '--bg-tertiary': '#1a1625',
            '--bg-card': '#15111f',
            '--bg-hover': '#221a32',
            '--bg-input': '#0d0b14',
            '--text-primary': '#f0e6ff',
            '--text-secondary': '#b4a0d0',
            '--text-muted': '#87799c',
            '--accent': '#ff006e',
            '--accent-light': '#ff4d94',
            '--accent-dark': '#c9005a',
            '--border': '#2a1a3a',
            '--border-light': '#3a2a4a',
        },
    },
    {
        name: 'Dracula',
        slug: 'dracula',
        mode: 'dark',
        description: 'The Dracula scheme, as its authors drew it.',
        tags: ['popular', 'purple', 'classic'],
        variables: {
            '--bg-primary': '#282a36',
            '--bg-secondary': '#1e1f29',
            '--bg-tertiary': '#343746',
            '--bg-card': '#2c2e3c',
            '--bg-hover': '#3a3d50',
            '--bg-input': '#21222c',
            '--text-primary': '#f8f8f2',
            '--text-secondary': '#bfbfb2',
            '--text-muted': '#8995b8',
            '--accent': '#bd93f9',
            '--accent-light': '#d4b8ff',
            '--accent-dark': '#9b6ddb',
            '--border': '#44475a',
            '--border-light': '#565970',
            '--success': '#50fa7b',
            '--danger': '#ff5555',
            '--warning': '#f1fa8c',
            '--info': '#8be9fd',
            '--live-red': '#ff5555',
        },
    },
    {
        name: 'Monokai',
        slug: 'monokai',
        mode: 'dark',
        description: 'The Monokai editor palette.',
        tags: ['developer', 'classic', 'warm'],
        variables: {
            '--bg-primary': '#272822',
            '--bg-secondary': '#1e1f1c',
            '--bg-tertiary': '#3e3d32',
            '--bg-card': '#2d2e27',
            '--bg-hover': '#49483e',
            '--bg-input': '#22231e',
            '--text-primary': '#f8f8f2',
            '--text-secondary': '#cfcfc2',
            '--text-muted': '#979484',
            '--accent': '#a6e22e',
            '--accent-light': '#c4ff50',
            '--accent-dark': '#7dac1c',
            '--border': '#49483e',
            '--border-light': '#5b5a50',
            '--danger': '#f92672',
            '--warning': '#e6db74',
            '--info': '#66d9ef',
        },
    },
    {
        name: 'Trench',
        slug: 'ocean-deep',
        mode: 'dark',
        description: 'Pressure-dark water with a teal glow.',
        tags: ['ocean', 'teal', 'calm'],
        variables: {
            '--bg-primary': '#0a1215',
            '--bg-secondary': '#0f1a1f',
            '--bg-tertiary': '#162228',
            '--bg-card': '#121c22',
            '--bg-hover': '#1a2a32',
            '--bg-input': '#0c1418',
            '--text-primary': '#d0e8ef',
            '--text-secondary': '#7aa8ba',
            '--text-muted': '#658896',
            '--accent': '#00bcd4',
            '--accent-light': '#4dd0e1',
            '--accent-dark': '#0097a7',
            '--border': '#1a3040',
            '--border-light': '#2a4050',
        },
    },
    {
        name: 'Dusk',
        slug: 'sunset',
        mode: 'dark',
        description: 'Orange fading to rose over dark ground.',
        tags: ['warm', 'gradient', 'vibrant'],
        variables: {
            '--bg-primary': '#120a0a',
            '--bg-secondary': '#1a1010',
            '--bg-tertiary': '#241616',
            '--bg-card': '#1e1212',
            '--bg-hover': '#2e1a1a',
            '--bg-input': '#140c0c',
            '--text-primary': '#ffe8e0',
            '--text-secondary': '#c49080',
            '--text-muted': '#977970',
            '--accent': '#ff6b35',
            '--accent-light': '#ff8f5e',
            '--accent-dark': '#d04a1a',
            '--border': '#3a2020',
            '--border-light': '#4a3030',
        },
    },
    {
        name: 'Arctic',
        slug: 'arctic',
        mode: 'dark',
        description: 'Frost surfaces, cyan light, crisp white text.',
        tags: ['cool', 'ice', 'clean'],
        variables: {
            '--bg-primary': '#0b1620',
            '--bg-secondary': '#0f1e2b',
            '--bg-tertiary': '#163040',
            '--bg-card': '#122534',
            '--bg-hover': '#1a3a4c',
            '--bg-input': '#0c1a26',
            '--text-primary': '#eaf6ff',
            '--text-secondary': '#9ec3d8',
            '--text-muted': '#7ea3ba',
            '--accent': '#22d3ee',
            '--accent-light': '#a5f3fc',
            '--accent-dark': '#0891b2',
            '--border': '#1e3f52',
            '--border-light': '#2a5268',
            '--info': '#7dd3fc',
            '--success': '#34d399',
            '--shadow': '0 2px 12px rgba(2,12,20,0.5)',
            '--shadow-lg': '0 8px 32px rgba(2,12,20,0.65)',
        },
    },
    {
        name: 'Ember',
        slug: 'ember',
        mode: 'dark',
        description: 'Smouldering red on warm charcoal.',
        tags: ['red', 'warm', 'intense'],
        variables: {
            '--bg-primary': '#120808',
            '--bg-secondary': '#1a0e0e',
            '--bg-tertiary': '#241414',
            '--bg-card': '#1e1010',
            '--bg-hover': '#2e1818',
            '--bg-input': '#140a0a',
            '--text-primary': '#f0dada',
            '--text-secondary': '#b0808a',
            '--text-muted': '#95787c',
            '--accent': '#ef4444',
            '--accent-light': '#f87171',
            '--accent-dark': '#b91c1c',
            '--border': '#3a1a20',
            '--border-light': '#4a2a30',
        },
    },
    {
        name: 'Vapor',
        slug: 'vapor',
        mode: 'dark',
        description: 'Magenta and teal, straight off a VHS tape.',
        tags: ['retro', 'aesthetic', 'neon'],
        variables: {
            '--bg-primary': '#0e0a14',
            '--bg-secondary': '#14101c',
            '--bg-tertiary': '#1c1628',
            '--bg-card': '#181220',
            '--bg-hover': '#241a34',
            '--bg-input': '#100c16',
            '--text-primary': '#f0e0ff',
            '--text-secondary': '#c090e0',
            '--text-muted': '#8f73b7',
            '--accent': '#e040fb',
            '--accent-light': '#ea80fc',
            '--accent-dark': '#aa00d4',
            '--border': '#2a1a40',
            '--border-light': '#3a2a50',
            '--info': '#00e5ff',
            '--success': '#69f0ae',
        },
    },
    {
        name: 'Slate',
        slug: 'slate',
        mode: 'dark',
        description: 'Neutral grey with a cool violet accent.',
        tags: ['neutral', 'minimal', 'professional'],
        variables: {
            '--bg-primary': '#0f1118',
            '--bg-secondary': '#161820',
            '--bg-tertiary': '#1e2028',
            '--bg-card': '#1a1c24',
            '--bg-hover': '#24262e',
            '--bg-input': '#12141c',
            '--text-primary': '#e4e6ea',
            '--text-secondary': '#a0a4b0',
            '--text-muted': '#828690',
            '--accent': '#a78bfa',
            '--accent-light': '#c4b5fd',
            '--accent-dark': '#7c3aed',
            '--border': '#2a2c38',
            '--border-light': '#3a3c48',
        },
    },
    {
        name: 'Matrix',
        slug: 'matrix',
        mode: 'dark',
        description: 'Green phosphor on black.',
        tags: ['hacker', 'retro', 'terminal'],
        variables: {
            '--bg-primary': '#000000',
            '--bg-secondary': '#050a05',
            '--bg-tertiary': '#0a140a',
            '--bg-card': '#071007',
            '--bg-hover': '#0e1e0e',
            '--bg-input': '#030803',
            '--text-primary': '#00ff41',
            '--text-secondary': '#00b030',
            '--text-muted': '#008f25',
            '--accent': '#00ff41',
            '--accent-light': '#66ff8a',
            '--accent-dark': '#00aa2a',
            '--border': '#0a2a0a',
            '--border-light': '#144014',
        },
    },
    {
        name: 'Nord',
        slug: 'nord',
        mode: 'dark',
        description: 'The Nord palette: muted polar blues.',
        tags: ['popular', 'blue', 'soft'],
        variables: {
            '--bg-primary': '#2e3440',
            '--bg-secondary': '#272c36',
            '--bg-tertiary': '#3b4252',
            '--bg-card': '#333a48',
            '--bg-hover': '#434c5e',
            '--bg-input': '#2a303c',
            '--text-primary': '#eceff4',
            '--text-secondary': '#d8dee9',
            '--text-muted': '#9ba5b8',
            '--accent': '#88c0d0',
            '--accent-light': '#8fbcbb',
            '--accent-dark': '#5e81ac',
            '--border': '#3b4252',
            '--border-light': '#4c566a',
            '--success': '#a3be8c',
            '--danger': '#bf616a',
            '--warning': '#ebcb8b',
            '--info': '#81a1c1',
        },
    },
    {
        name: 'Gruvbox',
        slug: 'gruvbox-dark',
        mode: 'dark',
        description: 'Warm retro contrast.',
        tags: ['retro', 'warm', 'developer'],
        variables: {
            '--bg-primary': '#1d2021',
            '--bg-secondary': '#282828',
            '--bg-tertiary': '#3c3836',
            '--bg-card': '#32302f',
            '--bg-hover': '#504945',
            '--bg-input': '#242424',
            '--text-primary': '#ebdbb2',
            '--text-secondary': '#d5c4a1',
            '--text-muted': '#a69682',
            '--accent': '#fabd2f',
            '--accent-light': '#fce566',
            '--accent-dark': '#d79921',
            '--border': '#3c3836',
            '--border-light': '#504945',
            '--success': '#b8bb26',
            '--danger': '#fb4934',
            '--warning': '#fe8019',
            '--info': '#83a598',
        },
    },
    {
        name: 'Abyss',
        slug: 'abyss',
        mode: 'dark',
        description: 'Nearly black; the interface is the light.',
        tags: ['minimal', 'ultra-dark', 'oled'],
        variables: {
            '--bg-primary': '#000000',
            '--bg-secondary': '#080808',
            '--bg-tertiary': '#111111',
            '--bg-card': '#0a0a0a',
            '--bg-hover': '#181818',
            '--bg-input': '#050505',
            '--text-primary': '#cccccc',
            '--text-secondary': '#888888',
            '--text-muted': '#7a7a7a',
            '--accent': '#ffffff',
            '--accent-light': '#ffffff',
            '--accent-dark': '#aaaaaa',
            '--border': '#1a1a1a',
            '--border-light': '#252525',
        },
    },
    {
        name: 'Copper',
        slug: 'copper',
        mode: 'dark',
        description: 'Bronze on dark walnut.',
        tags: ['metallic', 'warm', 'premium'],
        variables: {
            '--bg-primary': '#110d09',
            '--bg-secondary': '#1a140e',
            '--bg-tertiary': '#231c14',
            '--bg-card': '#1e1710',
            '--bg-hover': '#2c2218',
            '--bg-input': '#13100b',
            '--text-primary': '#e8ddd0',
            '--text-secondary': '#b49a80',
            '--text-muted': '#8e7f6a',
            '--accent': '#cd7f32',
            '--accent-light': '#daa060',
            '--accent-dark': '#a06020',
            '--border': '#2a2016',
            '--border-light': '#3a3020',
        },
    },
    {
        name: 'Sakura',
        slug: 'sakura-night',
        mode: 'dark',
        description: 'Cherry blossom on indigo.',
        tags: ['japanese', 'pink', 'soft'],
        variables: {
            '--bg-primary': '#0e0a14',
            '--bg-secondary': '#150f1c',
            '--bg-tertiary': '#1c1526',
            '--bg-card': '#181020',
            '--bg-hover': '#221830',
            '--bg-input': '#100c16',
            '--text-primary': '#f0e0f0',
            '--text-secondary': '#c0a0c0',
            '--text-muted': '#927592',
            '--accent': '#f472b6',
            '--accent-light': '#f9a8d4',
            '--accent-dark': '#db2777',
            '--border': '#2a1a30',
            '--border-light': '#3a2a40',
        },
    },
    {
        name: 'Amber',
        slug: 'hacker',
        mode: 'dark',
        description: 'Amber phosphor on black.',
        tags: ['retro', 'terminal', 'nostalgia'],
        variables: {
            '--bg-primary': '#000000',
            '--bg-secondary': '#0a0800',
            '--bg-tertiary': '#141000',
            '--bg-card': '#0e0c00',
            '--bg-hover': '#1c1800',
            '--bg-input': '#060400',
            '--text-primary': '#ffb000',
            '--text-secondary': '#cc8d00',
            '--text-muted': '#a37100',
            '--accent': '#ffb000',
            '--accent-light': '#ffd050',
            '--accent-dark': '#cc8d00',
            '--border': '#1a1400',
            '--border-light': '#2a2200',
        },
    },
    {
        name: 'Daylight',
        slug: 'daylight',
        mode: 'light',
        description: 'Bright white with warm accents.',
        tags: ['clean', 'bright', 'default-light'],
        variables: {
            '--bg-primary': '#ffffff',
            '--bg-secondary': '#f7f7f8',
            '--bg-tertiary': '#eeeef0',
            '--bg-card': '#ffffff',
            '--bg-hover': '#f0f0f2',
            '--bg-input': '#f5f5f7',
            '--text-primary': '#1a1a2e',
            '--text-secondary': '#4a4a6a',
            '--text-muted': '#747489',
            '--accent': '#8756f3',
            '--accent-light': '#a78bfa',
            '--accent-dark': '#6d28d9',
            '--border': '#e0e0e6',
            '--border-light': '#d0d0d8',
            '--shadow': '0 2px 12px rgba(0,0,0,0.08)',
            '--shadow-lg': '0 8px 32px rgba(0,0,0,0.12)',
        },
    },
    {
        name: 'Paper',
        slug: 'paper',
        mode: 'light',
        description: 'Aged paper and ink.',
        tags: ['warm', 'soft', 'minimal'],
        variables: {
            '--bg-primary': '#faf8f5',
            '--bg-secondary': '#f0ece6',
            '--bg-tertiary': '#e8e2d8',
            '--bg-card': '#faf8f5',
            '--bg-hover': '#f0ece6',
            '--bg-input': '#f5f2ed',
            '--text-primary': '#2c2416',
            '--text-secondary': '#5a4e3e',
            '--text-muted': '#7b7061',
            '--accent': '#8b6914',
            '--accent-light': '#b08a30',
            '--accent-dark': '#6a5010',
            '--border': '#ddd6c8',
            '--border-light': '#ccc4b0',
            '--shadow': '0 2px 12px rgba(60,40,0,0.06)',
            '--shadow-lg': '0 8px 32px rgba(60,40,0,0.10)',
        },
    },
    {
        name: 'Vibe Light',
        slug: 'cloud',
        mode: 'light',
        description: 'OpenVibe\'s default in daylight: airy blue-white with the same blue.',
        tags: ['blue', 'airy', 'fresh'],
        variables: {
            '--bg-primary': '#f0f5ff',
            '--bg-secondary': '#e8eef8',
            '--bg-tertiary': '#dde5f0',
            '--bg-card': '#f5f8ff',
            '--bg-hover': '#e4ecf8',
            '--bg-input': '#edf2fa',
            '--text-primary': '#1a2040',
            '--text-secondary': '#4a5070',
            '--text-muted': '#6b718c',
            '--accent': '#2867ed',
            '--accent-light': '#60a5fa',
            '--accent-dark': '#2563eb',
            '--border': '#d0d8ea',
            '--border-light': '#bcc8e0',
            '--shadow': '0 2px 12px rgba(0,20,60,0.06)',
            '--shadow-lg': '0 8px 32px rgba(0,20,60,0.10)',
        },
    },
    {
        name: 'Meadow',
        slug: 'meadow',
        mode: 'light',
        description: 'Spring greens in daylight.',
        tags: ['nature', 'green', 'fresh'],
        variables: {
            '--bg-primary': '#f2f8f0',
            '--bg-secondary': '#e8f0e4',
            '--bg-tertiary': '#dce8d6',
            '--bg-card': '#f5faf2',
            '--bg-hover': '#e4f0de',
            '--bg-input': '#edf5ea',
            '--text-primary': '#1a2e16',
            '--text-secondary': '#3a5a32',
            '--text-muted': '#5d7a54',
            '--accent': '#15823e',
            '--accent-light': '#22c55e',
            '--accent-dark': '#15803d',
            '--border': '#c8dcc0',
            '--border-light': '#b0ccaa',
            '--shadow': '0 2px 12px rgba(0,40,0,0.06)',
            '--shadow-lg': '0 8px 32px rgba(0,40,0,0.10)',
        },
    },
    {
        name: 'Peach',
        slug: 'peach',
        mode: 'light',
        description: 'Peach and coral, soft and warm.',
        tags: ['warm', 'pink', 'soft'],
        variables: {
            '--bg-primary': '#fff5f0',
            '--bg-secondary': '#fbeae2',
            '--bg-tertiary': '#f5ddd2',
            '--bg-card': '#fff7f2',
            '--bg-hover': '#fce8dc',
            '--bg-input': '#fdf0ea',
            '--text-primary': '#2e1a14',
            '--text-secondary': '#6a4438',
            '--text-muted': '#8f6a5c',
            '--accent': '#c04808',
            '--accent-light': '#fb923c',
            '--accent-dark': '#ea580c',
            '--border': '#f0d0c0',
            '--border-light': '#e4bfab',
            '--shadow': '0 2px 12px rgba(60,20,0,0.06)',
            '--shadow-lg': '0 8px 32px rgba(60,20,0,0.10)',
        },
    },
    {
        name: 'Lavender',
        slug: 'lavender',
        mode: 'light',
        description: 'Calm pale violet.',
        tags: ['purple', 'calm', 'elegant'],
        variables: {
            '--bg-primary': '#f8f5ff',
            '--bg-secondary': '#f0eaf8',
            '--bg-tertiary': '#e6ddf0',
            '--bg-card': '#faf7ff',
            '--bg-hover': '#eee6f8',
            '--bg-input': '#f4f0fa',
            '--text-primary': '#1e1430',
            '--text-secondary': '#4a3a60',
            '--text-muted': '#796a92',
            '--accent': '#844cf2',
            '--accent-light': '#a78bfa',
            '--accent-dark': '#7c3aed',
            '--border': '#ddd0ee',
            '--border-light': '#ccc0dd',
            '--shadow': '0 2px 12px rgba(40,0,60,0.06)',
            '--shadow-lg': '0 8px 32px rgba(40,0,60,0.10)',
        },
    },
    {
        name: 'Gruvbox Light',
        slug: 'gruvbox-light',
        mode: 'light',
        description: 'Cream with bold retro accents.',
        tags: ['retro', 'warm', 'developer'],
        variables: {
            '--bg-primary': '#fbf1c7',
            '--bg-secondary': '#f2e5bc',
            '--bg-tertiary': '#ebdbb2',
            '--bg-card': '#fbf1c7',
            '--bg-hover': '#f2e5bc',
            '--bg-input': '#f5ecc4',
            '--text-primary': '#3c3836',
            '--text-secondary': '#504945',
            '--text-muted': '#766b60',
            '--accent': '#be4707',
            '--accent-light': '#fe8019',
            '--accent-dark': '#af3a03',
            '--border': '#d5c4a1',
            '--border-light': '#bdae93',
            '--success': '#98971a',
            '--danger': '#cc241d',
            '--warning': '#d79921',
            '--info': '#458588',
            '--shadow': '0 2px 12px rgba(40,30,0,0.08)',
            '--shadow-lg': '0 8px 32px rgba(40,30,0,0.12)',
        },
    },
    {
        name: 'Snow',
        slug: 'snow',
        mode: 'light',
        description: 'Pure white with icy blue.',
        tags: ['minimal', 'clean', 'blue'],
        variables: {
            '--bg-primary': '#ffffff',
            '--bg-secondary': '#f8fafc',
            '--bg-tertiary': '#f1f5f9',
            '--bg-card': '#ffffff',
            '--bg-hover': '#f1f5f9',
            '--bg-input': '#f8fafc',
            '--text-primary': '#0f172a',
            '--text-secondary': '#334155',
            '--text-muted': '#69768b',
            '--accent': '#027cbb',
            '--accent-light': '#38bdf8',
            '--accent-dark': '#0284c7',
            '--border': '#e2e8f0',
            '--border-light': '#cbd5e1',
            '--shadow': '0 2px 12px rgba(0,0,0,0.05)',
            '--shadow-lg': '0 8px 32px rgba(0,0,0,0.08)',
        },
    },
    {
        name: 'Sand',
        slug: 'sand',
        mode: 'light',
        description: 'Desert tan and warm stone.',
        tags: ['warm', 'earthy', 'desert'],
        variables: {
            '--bg-primary': '#f8f4ef',
            '--bg-secondary': '#f0e8de',
            '--bg-tertiary': '#e8ddd0',
            '--bg-card': '#faf6f0',
            '--bg-hover': '#f0e8de',
            '--bg-input': '#f5f0e8',
            '--text-primary': '#2e2418',
            '--text-secondary': '#5a4e3e',
            '--text-muted': '#7a6e5f',
            '--accent': '#8c6707',
            '--accent-light': '#daa520',
            '--accent-dark': '#8b6508',
            '--border': '#ddd0be',
            '--border-light': '#ccc0aa',
            '--shadow': '0 2px 12px rgba(60,40,0,0.06)',
            '--shadow-lg': '0 8px 32px rgba(60,40,0,0.10)',
        },
    },
    {
        name: 'Rose',
        slug: 'rose',
        mode: 'light',
        description: 'Blush pink, light and delicate.',
        tags: ['pink', 'romantic', 'soft'],
        variables: {
            '--bg-primary': '#fff5f7',
            '--bg-secondary': '#fce7ec',
            '--bg-tertiary': '#f5d5de',
            '--bg-card': '#fff7f9',
            '--bg-hover': '#fce0e8',
            '--bg-input': '#fdeef2',
            '--text-primary': '#2e1420',
            '--text-secondary': '#6a3850',
            '--text-muted': '#96617e',
            '--accent': '#de1c47',
            '--accent-light': '#f43f5e',
            '--accent-dark': '#be123c',
            '--border': '#f0c8d4',
            '--border-light': '#e4b0c0',
            '--shadow': '0 2px 12px rgba(60,0,20,0.06)',
            '--shadow-lg': '0 8px 32px rgba(60,0,20,0.10)',
        },
    },
    {
        name: 'Solarized Dark',
        slug: 'solarized-dark',
        mode: 'dark',
        description: 'Ethan Schoonover\'s precision palette, dark.',
        tags: ['popular', 'developer', 'balanced'],
        variables: {
            '--bg-primary': '#002b36',
            '--bg-secondary': '#073642',
            '--bg-tertiary': '#0a3f4e',
            '--bg-card': '#053542',
            '--bg-hover': '#0d4a58',
            '--bg-input': '#01303d',
            '--text-primary': '#fdf6e3',
            '--text-secondary': '#93a1a1',
            '--text-muted': '#909c9a',
            '--accent': '#b58900',
            '--accent-light': '#d4a017',
            '--accent-dark': '#8a6a00',
            '--border': '#0a4050',
            '--border-light': '#105060',
            '--success': '#859900',
            '--danger': '#dc322f',
            '--warning': '#cb4b16',
            '--info': '#268bd2',
        },
    },
    {
        name: 'Solarized Light',
        slug: 'solarized-light',
        mode: 'light',
        description: 'Ethan Schoonover\'s precision palette, light.',
        tags: ['popular', 'developer', 'balanced'],
        variables: {
            '--bg-primary': '#fdf6e3',
            '--bg-secondary': '#eee8d5',
            '--bg-tertiary': '#e4ddc6',
            '--bg-card': '#fdf6e3',
            '--bg-hover': '#eee8d5',
            '--bg-input': '#f5eedb',
            '--text-primary': '#002b36',
            '--text-secondary': '#586e75',
            '--text-muted': '#5b7478',
            '--accent': '#8d6c00',
            '--accent-light': '#d4a017',
            '--accent-dark': '#8a6a00',
            '--border': '#d6ceb5',
            '--border-light': '#c8c0a5',
            '--success': '#859900',
            '--danger': '#dc322f',
            '--warning': '#cb4b16',
            '--info': '#268bd2',
            '--shadow': '0 2px 12px rgba(0,30,40,0.08)',
            '--shadow-lg': '0 8px 32px rgba(0,30,40,0.12)',
        },
    },
    {
        name: 'Catppuccin Mocha',
        slug: 'catppuccin-mocha',
        mode: 'dark',
        description: 'Soothing pastels on mocha.',
        tags: ['popular', 'pastel', 'soft'],
        variables: {
            '--bg-primary': '#1e1e2e',
            '--bg-secondary': '#181825',
            '--bg-tertiary': '#313244',
            '--bg-card': '#1e1e2e',
            '--bg-hover': '#313244',
            '--bg-input': '#1a1a2c',
            '--text-primary': '#cdd6f4',
            '--text-secondary': '#bac2de',
            '--text-muted': '#81869e',
            '--accent': '#cba6f7',
            '--accent-light': '#dcc0ff',
            '--accent-dark': '#b07de0',
            '--border': '#313244',
            '--border-light': '#45475a',
            '--success': '#a6e3a1',
            '--danger': '#f38ba8',
            '--warning': '#fab387',
            '--info': '#89b4fa',
            '--live-red': '#f38ba8',
        },
    },
    {
        name: 'Catppuccin Latte',
        slug: 'catppuccin-latte',
        mode: 'light',
        description: 'Soothing pastels on latte.',
        tags: ['popular', 'pastel', 'soft'],
        variables: {
            '--bg-primary': '#eff1f5',
            '--bg-secondary': '#e6e9ef',
            '--bg-tertiary': '#dce0e8',
            '--bg-card': '#eff1f5',
            '--bg-hover': '#dce0e8',
            '--bg-input': '#e8ebf0',
            '--text-primary': '#4c4f69',
            '--text-secondary': '#5c5f77',
            '--text-muted': '#696c83',
            '--accent': '#8839ef',
            '--accent-light': '#a05cff',
            '--accent-dark': '#7028d4',
            '--border': '#ccd0da',
            '--border-light': '#bcc0cc',
            '--success': '#40a02b',
            '--danger': '#d20f39',
            '--warning': '#fe640b',
            '--info': '#1e66f5',
            '--live-red': '#d20f39',
            '--shadow': '0 2px 12px rgba(0,0,0,0.06)',
            '--shadow-lg': '0 8px 32px rgba(0,0,0,0.10)',
        },
    },
    {
        name: 'High Contrast',
        slug: 'high-contrast',
        mode: 'dark',
        description: 'Bold yellow on black for maximum legibility.',
        tags: ['accessibility', 'high-contrast', 'bold'],
        variables: {
            '--bg-primary': '#000000',
            '--bg-secondary': '#0a0a0a',
            '--bg-tertiary': '#1a1a1a',
            '--bg-card': '#0f0f0f',
            '--bg-hover': '#222222',
            '--bg-input': '#0a0a0a',
            '--text-primary': '#ffffff',
            '--text-secondary': '#f0f0f0',
            '--text-muted': '#aaaaaa',
            '--accent': '#ffd700',
            '--accent-light': '#ffed4a',
            '--accent-dark': '#ccac00',
            '--border': '#444444',
            '--border-light': '#666666',
            '--live-red': '#ff0000',
            '--success': '#00ff00',
            '--warning': '#ffff00',
            '--danger': '#ff0000',
            '--info': '#00ffff',
        },
    },
    // ── Seasonal themes ───────────────────────────────────────────────────────────────────────────
    // A theme with `season` is also the network's default between `from` and `to` (MM-DD, the visitor's own
    // calendar, both days included) for everyone on the default theme who has not turned seasonal themes off
    // (theme-loader.js; display preference `seasonal`). Anyone can also pick one like any other theme, any time.
    {
        name: 'Midnight Pumpkin',
        slug: 'halloween',
        mode: 'dark',
        description: 'Halloween: pumpkin orange on OpenVibe\'s midnight navy. On by itself through October (Hayride in light).',
        tags: ['seasonal', 'halloween', 'orange'],
        season: { id: 'halloween', name: 'Halloween', from: '10-01', to: '10-31' },
        variables: {
            '--bg-primary': '#0a0f1c',
            '--bg-secondary': '#0f1626',
            '--bg-tertiary': '#151e33',
            '--bg-card': '#111a2b',
            '--bg-hover': '#1a2540',
            '--bg-input': '#0c1322',
            '--text-primary': '#eef1f6',
            '--text-secondary': '#a9b4c8',
            '--text-muted': '#8c99b0',
            '--accent': '#ff7a1a',
            '--accent-light': '#ffa14f',
            '--accent-dark': '#d65d00',
            '--border': '#1c2840',
            '--border-light': '#2a3858',
            '--live-red': '#ef4444',
            '--success': '#4ade80',
            '--warning': '#fbbf24',
            '--danger': '#f87171',
            '--info': '#60a5fa',
            '--shadow': '0 2px 12px rgba(0,4,14,0.5)',
            '--shadow-lg': '0 8px 32px rgba(0,4,14,0.65)',
        },
    },
    {
        name: 'Frost',
        slug: 'frost',
        mode: 'dark',
        description: 'Winter: frosted teal over a cold midnight sky. On by itself through December.',
        tags: ['seasonal', 'winter', 'teal', 'cool'],
        season: { id: 'winter', name: 'Winter', from: '12-01', to: '12-31' },
        variables: {
            '--bg-primary': '#08111b',
            '--bg-secondary': '#0d1926',
            '--bg-tertiary': '#132334',
            '--bg-card': '#0f1c2b',
            '--bg-hover': '#18293d',
            '--bg-input': '#0a1520',
            '--text-primary': '#eaf4fb',
            '--text-secondary': '#a3b9cc',
            '--text-muted': '#7f97ad',
            '--accent': '#2dd4bf',
            '--accent-light': '#7ee8da',
            '--accent-dark': '#0f9e8c',
            '--border': '#1b2d41',
            '--border-light': '#294057',
            '--live-red': '#ef4444',
            '--success': '#4ade80',
            '--warning': '#fbbf24',
            '--danger': '#f87171',
            '--info': '#93c5fd',
            '--shadow': '0 2px 12px rgba(0,6,14,0.5)',
            '--shadow-lg': '0 8px 32px rgba(0,6,14,0.65)',
        },
    },
    {
        name: 'Dawn',
        slug: 'dawn',
        mode: 'light',
        description: 'Midnight\'s indigo in the first light.',
        tags: ['cool', 'minimal', 'indigo'],
        variables: {
            '--bg-primary': '#f5f6fc',
            '--bg-secondary': '#eceefa',
            '--bg-tertiary': '#e1e4f5',
            '--bg-card': '#fafbff',
            '--bg-hover': '#e6e9f8',
            '--bg-input': '#f0f2fb',
            '--text-primary': '#161a33',
            '--text-secondary': '#474d6b',
            '--text-muted': '#646a87',
            '--accent': '#4f46e5',
            '--accent-light': '#6366f1',
            '--accent-dark': '#3730a3',
            '--border': '#d6daef',
            '--border-light': '#c3c8e6',
            '--shadow': '0 2px 12px rgba(10,14,40,0.07)',
            '--shadow-lg': '0 8px 32px rgba(10,14,40,0.12)',
        },
    },
    {
        name: 'Tokyo Day',
        slug: 'tokyo-day',
        mode: 'light',
        description: 'Neon Tokyo by day: hot pink on soft white.',
        tags: ['vibrant', 'pink', 'city'],
        variables: {
            '--bg-primary': '#fff6fa',
            '--bg-secondary': '#ffedf4',
            '--bg-tertiary': '#fde1ec',
            '--bg-card': '#fffafc',
            '--bg-hover': '#fde7f0',
            '--bg-input': '#fff0f6',
            '--text-primary': '#24101a',
            '--text-secondary': '#5c3a4a',
            '--text-muted': '#7a5566',
            '--accent': '#d1005a',
            '--accent-light': '#ff2d7f',
            '--accent-dark': '#9c0043',
            '--border': '#f3d3e0',
            '--border-light': '#ebbfd1',
            '--shadow': '0 2px 12px rgba(40,0,16,0.07)',
            '--shadow-lg': '0 8px 32px rgba(40,0,16,0.12)',
        },
    },
    {
        name: 'Alucard',
        slug: 'alucard',
        mode: 'light',
        description: 'Dracula\'s daylight twin: purple ink on warm parchment.',
        tags: ['popular', 'purple', 'warm'],
        variables: {
            '--bg-primary': '#fffbeb',
            '--bg-secondary': '#f6f0d8',
            '--bg-tertiary': '#ece4c6',
            '--bg-card': '#fffdf3',
            '--bg-hover': '#f2ead0',
            '--bg-input': '#fbf6e2',
            '--text-primary': '#1f1f1f',
            '--text-secondary': '#4f4b38',
            '--text-muted': '#6c664b',
            '--accent': '#644ac9',
            '--accent-light': '#7f63e0',
            '--accent-dark': '#4a33a3',
            '--border': '#e3dab8',
            '--border-light': '#d6cba3',
            '--shadow': '0 2px 12px rgba(40,30,0,0.07)',
            '--shadow-lg': '0 8px 32px rgba(40,30,0,0.12)',
        },
    },
    {
        name: 'Monokai Light',
        slug: 'monokai-light',
        mode: 'light',
        description: 'Monokai\'s greens on a calm off-white page.',
        tags: ['developer', 'green', 'classic'],
        variables: {
            '--bg-primary': '#fafaf6',
            '--bg-secondary': '#f1f1ea',
            '--bg-tertiary': '#e7e7de',
            '--bg-card': '#fdfdfa',
            '--bg-hover': '#ecece3',
            '--bg-input': '#f6f6f0',
            '--text-primary': '#272822',
            '--text-secondary': '#4e4f44',
            '--text-muted': '#6e6f62',
            '--accent': '#5c8a00',
            '--accent-light': '#7aa61a',
            '--accent-dark': '#436600',
            '--border': '#dcdcd0',
            '--border-light': '#cdcdbf',
            '--shadow': '0 2px 12px rgba(20,20,10,0.07)',
            '--shadow-lg': '0 8px 32px rgba(20,20,10,0.12)',
        },
    },
    {
        name: 'Shallows',
        slug: 'shallows',
        mode: 'light',
        description: 'Trench in the sun: clear teal water over white sand.',
        tags: ['ocean', 'teal', 'calm'],
        variables: {
            '--bg-primary': '#f0fafb',
            '--bg-secondary': '#e4f4f6',
            '--bg-tertiary': '#d5ecef',
            '--bg-card': '#f7fcfd',
            '--bg-hover': '#dcf0f2',
            '--bg-input': '#ebf7f8',
            '--text-primary': '#0c2226',
            '--text-secondary': '#3a5458',
            '--text-muted': '#567277',
            '--accent': '#00788a',
            '--accent-light': '#0097a7',
            '--accent-dark': '#005662',
            '--border': '#c9e3e7',
            '--border-light': '#b4d6db',
            '--shadow': '0 2px 12px rgba(0,30,36,0.07)',
            '--shadow-lg': '0 8px 32px rgba(0,30,36,0.12)',
        },
    },
    {
        name: 'Ash',
        slug: 'ash',
        mode: 'light',
        description: 'Ember cooled to ash: warm greys with a red glow.',
        tags: ['red', 'warm', 'soft'],
        variables: {
            '--bg-primary': '#faf7f6',
            '--bg-secondary': '#f3eeec',
            '--bg-tertiary': '#eae2df',
            '--bg-card': '#fdfbfa',
            '--bg-hover': '#efe7e4',
            '--bg-input': '#f7f3f1',
            '--text-primary': '#231716',
            '--text-secondary': '#54403d',
            '--text-muted': '#725b57',
            '--accent': '#c62828',
            '--accent-light': '#e53935',
            '--accent-dark': '#8e1b1b',
            '--border': '#e2d6d2',
            '--border-light': '#d4c4bf',
            '--shadow': '0 2px 12px rgba(40,10,8,0.07)',
            '--shadow-lg': '0 8px 32px rgba(40,10,8,0.12)',
        },
    },
    {
        name: 'Vapor Day',
        slug: 'vapor-day',
        mode: 'light',
        description: 'Vapor in pastel daylight: magenta on lilac.',
        tags: ['retro', 'aesthetic', 'pink'],
        variables: {
            '--bg-primary': '#fcf6ff',
            '--bg-secondary': '#f6ecfc',
            '--bg-tertiary': '#eedff8',
            '--bg-card': '#fefaff',
            '--bg-hover': '#f2e5fa',
            '--bg-input': '#f9f1fe',
            '--text-primary': '#22122c',
            '--text-secondary': '#533f5f',
            '--text-muted': '#715c7e',
            '--accent': '#a21caf',
            '--accent-light': '#c026d3',
            '--accent-dark': '#701a75',
            '--border': '#e6d3f1',
            '--border-light': '#dbc0ea',
            '--shadow': '0 2px 12px rgba(30,0,40,0.07)',
            '--shadow-lg': '0 8px 32px rgba(30,0,40,0.12)',
        },
    },
    {
        name: 'Greenbar',
        slug: 'greenbar',
        mode: 'light',
        description: 'Matrix on paper: green-bar printout green on white.',
        tags: ['retro', 'terminal', 'green'],
        variables: {
            '--bg-primary': '#f4faf3',
            '--bg-secondary': '#e9f4e7',
            '--bg-tertiary': '#dcecd9',
            '--bg-card': '#f9fdf8',
            '--bg-hover': '#e2f0df',
            '--bg-input': '#eff7ed',
            '--text-primary': '#0d1f10',
            '--text-secondary': '#3b5240',
            '--text-muted': '#57705c',
            '--accent': '#137a2c',
            '--accent-light': '#1f9d3a',
            '--accent-dark': '#0b5a1f',
            '--border': '#cfe3cb',
            '--border-light': '#bcd7b7',
            '--shadow': '0 2px 12px rgba(0,30,6,0.07)',
            '--shadow-lg': '0 8px 32px rgba(0,30,6,0.12)',
        },
    },
    {
        name: 'Nord Light',
        slug: 'nord-light',
        mode: 'light',
        description: 'Nord\'s Snow Storm: frost blues on arctic white.',
        tags: ['popular', 'blue', 'soft'],
        variables: {
            '--bg-primary': '#eceff4',
            '--bg-secondary': '#e5e9f0',
            '--bg-tertiary': '#d8dee9',
            '--bg-card': '#f2f4f8',
            '--bg-hover': '#dfe4ec',
            '--bg-input': '#e8ecf2',
            '--text-primary': '#2e3440',
            '--text-secondary': '#434c5e',
            '--text-muted': '#4c566a',
            '--accent': '#5e81ac',
            '--accent-light': '#81a1c1',
            '--accent-dark': '#4c6a91',
            '--border': '#d0d7e2',
            '--border-light': '#c2cad8',
            '--shadow': '0 2px 12px rgba(20,26,40,0.07)',
            '--shadow-lg': '0 8px 32px rgba(20,26,40,0.12)',
        },
    },
    {
        name: 'Bright',
        slug: 'bright',
        mode: 'light',
        description: 'Abyss turned inside out: pure white, ink black, nothing else.',
        tags: ['minimal', 'monochrome', 'clean'],
        variables: {
            '--bg-primary': '#ffffff',
            '--bg-secondary': '#f6f6f6',
            '--bg-tertiary': '#ececec',
            '--bg-card': '#ffffff',
            '--bg-hover': '#f0f0f0',
            '--bg-input': '#fafafa',
            '--text-primary': '#0a0a0a',
            '--text-secondary': '#3d3d3d',
            '--text-muted': '#5c5c5c',
            '--accent': '#111111',
            '--accent-light': '#333333',
            '--accent-dark': '#000000',
            '--border': '#e2e2e2',
            '--border-light': '#d0d0d0',
            '--shadow': '0 2px 12px rgba(0,0,0,0.07)',
            '--shadow-lg': '0 8px 32px rgba(0,0,0,0.12)',
        },
    },
    {
        name: 'High Contrast Light',
        slug: 'high-contrast-light',
        mode: 'light',
        description: 'Black on white with strong edges and deep blue links.',
        tags: ['accessibility', 'high-contrast', 'bold'],
        variables: {
            '--bg-primary': '#ffffff',
            '--bg-secondary': '#ffffff',
            '--bg-tertiary': '#f2f2f2',
            '--bg-card': '#ffffff',
            '--bg-hover': '#e8e8e8',
            '--bg-input': '#ffffff',
            '--text-primary': '#000000',
            '--text-secondary': '#1a1a1a',
            '--text-muted': '#2b2b2b',
            '--accent': '#0000c8',
            '--accent-light': '#1a1aff',
            '--accent-dark': '#00008b',
            '--border': '#000000',
            '--border-light': '#333333',
            '--shadow': '0 2px 12px rgba(0,0,0,0.07)',
            '--shadow-lg': '0 8px 32px rgba(0,0,0,0.12)',
        },
    },
    {
        name: 'Hayride',
        slug: 'hayride',
        mode: 'light',
        description: 'Halloween in daylight: pumpkin orange on warm hay. Midnight Pumpkin\'s light half.',
        tags: ['seasonal', 'halloween', 'orange'],
        variables: {
            '--bg-primary': '#fbf6ee',
            '--bg-secondary': '#f6eee2',
            '--bg-tertiary': '#efe3d1',
            '--bg-card': '#ffffff',
            '--bg-hover': '#f3e9da',
            '--bg-input': '#fffaf2',
            '--text-primary': '#23180f',
            '--text-secondary': '#5a4838',
            '--text-muted': '#6b5a4a',
            '--accent': '#c2410c',
            '--accent-light': '#ea580c',
            '--accent-dark': '#9a3412',
            '--border': '#eadfcd',
            '--border-light': '#e0cfb6',
            '--shadow': '0 2px 12px rgba(40,24,8,0.07)',
            '--shadow-lg': '0 8px 32px rgba(40,24,8,0.12)',
        },
    },
    {
        name: 'Snowfall',
        slug: 'snowfall',
        mode: 'light',
        description: 'Winter in daylight: frosted teal on fresh snow. Frost\'s light half.',
        tags: ['seasonal', 'winter', 'teal'],
        variables: {
            '--bg-primary': '#f2f8fb',
            '--bg-secondary': '#e8f2f7',
            '--bg-tertiary': '#dbeaf1',
            '--bg-card': '#f8fbfd',
            '--bg-hover': '#e1eef4',
            '--bg-input': '#edf5f9',
            '--text-primary': '#0e1d26',
            '--text-secondary': '#3b5260',
            '--text-muted': '#57707e',
            '--accent': '#0f766e',
            '--accent-light': '#14b8a6',
            '--accent-dark': '#115e59',
            '--border': '#cfe2ea',
            '--border-light': '#bcd5df',
            '--shadow': '0 2px 12px rgba(0,20,30,0.07)',
            '--shadow-lg': '0 8px 32px rgba(0,20,30,0.12)',
        },
    },
];

// ── Derived tokens ──────────────────────────────────────────────────────────────
// Every theme also carries tokens a site cannot guess from the palette alone:
//   --on-accent     text/icon colour that reads on top of --accent (dark ink for light accents
//                   such as cyan or lime, white for deep ones) — chosen by WCAG contrast
//   --accent-rgb    "r,g,b" of the accent, for rgba(var(--accent-rgb), .3) in older stylesheets
//   --accent-glow   the accent at 35% for glows and focus rings
//   --color-scheme  dark|light, so native controls and scrollbars follow the theme
//   --accent-strong, --on-accent-strong
//                   a filled button's background and its label at 4.5:1 or better (WCAG AA for
//                   normal text): the accent, darkened under white or lightened under dark ink just
//                   enough (the Sign In button; white on #3b82f6 was 3.67:1)
// A theme may set any of them explicitly; otherwise they are computed here so all 37 themes,
// and community themes that only define the base palette, stay consistent on every site.
function hexToRgb(hex) {
    const m = /^#?([0-9a-f]{3}|[0-9a-f]{6})$/i.exec(String(hex || '').trim());
    if (!m) return null;
    let h = m[1]; if (h.length === 3) h = h.split('').map((c) => c + c).join('');
    return [parseInt(h.slice(0, 2), 16), parseInt(h.slice(2, 4), 16), parseInt(h.slice(4, 6), 16)];
}
function luminance(rgb) {
    const f = (v) => { v /= 255; return v <= 0.03928 ? v / 12.92 : Math.pow((v + 0.055) / 1.055, 2.4); };
    return 0.2126 * f(rgb[0]) + 0.7152 * f(rgb[1]) + 0.0722 * f(rgb[2]);
}
function contrast(a, b) { const [x, y] = [luminance(a), luminance(b)]; return (Math.max(x, y) + 0.05) / (Math.min(x, y) + 0.05); }
const toHex = (rgb) => '#' + rgb.map((v) => Math.max(0, Math.min(255, Math.round(v))).toString(16).padStart(2, '0')).join('');
/**
 * The accent moved toward black (under white) or white (under dark ink) until the pair reads at 4.5:1.
 * The label keeps --on-accent's choice (white wherever it reads at 3:1), so a button keeps its look and
 * only its fill deepens.
 */
function strongPair(accent) {
    const WHITE = [255, 255, 255], INK = [11, 13, 16];
    const ink = contrast(WHITE, accent) >= 3 ? WHITE : INK;
    const toward = ink === WHITE ? [0, 0, 0] : [255, 255, 255];
    let bg = accent;
    for (let t = 0; t <= 1 && contrast(ink, bg) < 4.5; t += 0.02) bg = accent.map((c, i) => c + (toward[i] - c) * t);
    return [toHex(bg), toHex(ink)];
}
/**
 * Text tokens read at 4.5:1 (WCAG AA for normal text) on every surface a theme defines. Sites write body text,
 * captions and links in --text-secondary, --text-muted, --accent and --accent-light on --bg-primary, --bg-secondary,
 * --bg-tertiary, --bg-card, --bg-input and --bg-hover; in the light themes --accent-light is a pale tint (snow's
 * #38bdf8 on white is 2.1:1) and --text-muted sat at 4.1 to 4.4 on the secondary surfaces, so axe failed 50 to 155
 * nodes on every site's home in every light theme (2026-10-22). A token below the floor moves toward black (light
 * themes) or white (dark ones) just far enough; a token that already reads is left exactly as the theme set it.
 */
// In the dark themes the accents already read on their surfaces and are the theme's brand colour (the default Vibe
// blue is #3b82f6), so only the two text tokens are held to the floor there.
const TEXT_TOKENS = { light: ['--text-secondary', '--text-muted', '--accent', '--accent-light'], dark: ['--text-secondary', '--text-muted'] };
const SURFACES = ['--bg-primary', '--bg-secondary', '--bg-tertiary', '--bg-card', '--bg-input', '--bg-hover'];
// The status colours stay exactly as each theme set them: they are backgrounds too (a live badge under white text, an
// amber strip under dark text), and darkening them would spoil those. Each gets a `-text` twin held to the text floor
// on every surface, for status words, counts and badges written in the colour (axe in snow, 2026-10-22: --success on
// white read at 2.3:1). CSS writes var(--success-text, var(--success)).
const STATUS_TOKENS = ['--success', '--warning', '--danger', '--error', '--info', '--live-red'];
// A theme that sets no status colours carries the default theme's (theme-loader merges DEFAULT_VARS first), so its twin
// is derived from those, on its own surfaces: snow inherits Vibe's #22c55e and needs a darker green for text.
const _vibeRaw = (RAW_BUILTIN_THEMES.find((t) => t.slug === 'vibe') || RAW_BUILTIN_THEMES[0]).variables || {};
const STATUS_DEFAULTS = Object.fromEntries(STATUS_TOKENS.filter((k) => _vibeRaw[k]).map((k) => [k, _vibeRaw[k]]));
function readableText(color, surfaces, mode, min = 4.5) {
    const c0 = hexToRgb(color);
    if (!c0 || !surfaces.length) return color;
    const worst = (c) => Math.min(...surfaces.map((b) => contrast(c, b)));
    if (worst(c0) >= min) return color;
    const toward = mode === 'light' ? [0, 0, 0] : [255, 255, 255];
    let c = c0;
    // Measured on the rounded colour the theme will carry, so the hex itself meets the floor.
    for (let t = 0.02; t <= 1 && worst(c) < min; t += 0.02) c = hexToRgb(toHex(c0.map((v, i) => v + (toward[i] - v) * t)));
    return toHex(c);
}

function deriveTokens(vars, mode) {
    const out = { ...vars };
    const surfaces = SURFACES.map((k) => hexToRgb(vars[k])).filter(Boolean);
    for (const k of TEXT_TOKENS[mode === 'light' ? 'light' : 'dark']) if (out[k]) out[k] = readableText(out[k], surfaces, mode);
    for (const k of STATUS_TOKENS) {
        const c = out[k] || STATUS_DEFAULTS[k];
        if (c && !out[`${k}-text`]) out[`${k}-text`] = readableText(c, surfaces, mode);
    }
    const accent = hexToRgb(out['--accent']);
    if (accent) {
        if (!out['--accent-strong'] || !out['--on-accent-strong']) {
            const [bg, ink] = strongPair(accent);
            if (!out['--accent-strong']) out['--accent-strong'] = bg;
            if (!out['--on-accent-strong']) out['--on-accent-strong'] = ink;
        }
        // White wherever it reads (>= 3:1, the large-text floor a button label meets); dark ink only
        // on accents too light for it (cyan, lime, amber).
        if (!out['--on-accent']) out['--on-accent'] = contrast([255, 255, 255], accent) >= 3 ? '#ffffff' : '#0b0d10';
        if (!out['--accent-rgb']) out['--accent-rgb'] = accent.join(',');
        if (!out['--accent-glow']) out['--accent-glow'] = `rgba(${accent.join(',')},0.35)`;
    }
    if (!out['--color-scheme']) out['--color-scheme'] = mode === 'light' ? 'light' : 'dark';
    return out;
}

/**
 * Every theme has a light and a dark half (the owner, 2026-10-25: "each theme should have a light counterpart instead of
 * … a mixed bag"): `pair` names the other one. The account menu's Light / Dark switches to it, and Auto follows the
 * device (theme-loader.js). The seasons follow too: Midnight Pumpkin's light half is Hayride, Frost's is Snowfall.
 */
const PAIRS = [
    ['vibe', 'cloud'], ['violet-hour', 'daylight'], ['midnight', 'dawn'], ['forest', 'meadow'], ['neon-tokyo', 'tokyo-day'],
    ['dracula', 'alucard'], ['monokai', 'monokai-light'], ['ocean-deep', 'shallows'], ['sunset', 'peach'], ['arctic', 'snow'],
    ['ember', 'ash'], ['vapor', 'vapor-day'], ['slate', 'lavender'], ['matrix', 'greenbar'], ['nord', 'nord-light'],
    ['gruvbox-dark', 'gruvbox-light'], ['abyss', 'bright'], ['copper', 'sand'], ['sakura-night', 'rose'], ['hacker', 'paper'],
    ['solarized-dark', 'solarized-light'], ['catppuccin-mocha', 'catppuccin-latte'], ['high-contrast', 'high-contrast-light'],
    ['halloween', 'hayride'], ['frost', 'snowfall'],
];
const PAIR_OF = Object.fromEntries(PAIRS.flatMap(([dark, light]) => [[dark, light], [light, dark]]));

const BUILTIN_THEMES = RAW_BUILTIN_THEMES.map((theme) => ({
    id: theme.slug,
    pair: PAIR_OF[theme.slug] || null,
    ...theme,
    tags: Array.isArray(theme.tags) ? [...theme.tags] : [],
    variables: deriveTokens(theme.variables || {}, theme.mode),
}));

const DEFAULT_THEME = BUILTIN_THEMES.find((theme) => theme.id === 'vibe') || BUILTIN_THEMES[0];
// The seasons, in calendar order: { id, name, theme, light, from: 'MM-DD', to: 'MM-DD' }: `theme` is the dark half and
// `light` its light half (theme-loader.js carries a copy).
const SEASONS = BUILTIN_THEMES.filter((theme) => theme.season).map((theme) => ({ id: theme.season.id, name: theme.season.name, theme: theme.id, light: theme.pair, from: theme.season.from, to: theme.season.to }))
    .sort((a, b) => a.from.localeCompare(b.from));
/** The season `date` falls in (the visitor's local calendar), or null. A season may run over New Year (from > to). */
function seasonOn(date = new Date()) {
    const md = `${String(date.getMonth() + 1).padStart(2, '0')}-${String(date.getDate()).padStart(2, '0')}`;
    return SEASONS.find((s) => (s.from <= s.to ? md >= s.from && md <= s.to : md >= s.from || md <= s.to)) || null;
}
const DEFAULT_VARS = Object.freeze({ ...(DEFAULT_THEME?.variables || {}) });

module.exports = {
    BUILTIN_THEMES,
    PAIRS,
    SEASONS,
    seasonOn,
    DEFAULT_THEME,
    DEFAULT_VARS,
    deriveTokens,
    readableText,
    TEXT_TOKENS,
    STATUS_TOKENS,
    SURFACES,
    hexToRgb,
    contrast,
};