:root{--bg-dark: #07070a;--bg-card: rgba(18, 18, 23, .65);--bg-card-hover: rgba(28, 28, 35, .8);--glass-surface: rgba(255, 255, 255, .03);--glass-border: rgba(255, 255, 255, .08);--glass-border-focus: rgba(255, 255, 255, .15);--glass-shine: linear-gradient(135deg, rgba(255, 255, 255, .12) 0%, transparent 50%, rgba(255, 255, 255, .02) 100%);--primary: #818cf8;--primary-hover: #6366f1;--primary-glow: rgba(99, 102, 241, .5);--accent: #a78bfa;--success: #10b981;--success-bg: rgba(16, 185, 129, .15);--error: #f43f5e;--warning: #fbbf24;--text-main: #f1f5f9;--text-muted: #94a3b8;--border: rgba(255, 255, 255, .08);--border-focus: rgba(255, 255, 255, .2);--shadow-glass: 0 8px 32px 0 rgba(0, 0, 0, .37);--shadow-glow: 0 0 20px rgba(99, 102, 241, .2);--bg-subtle: rgba(255, 255, 255, .04);--bg-input: rgba(0, 0, 0, .4);--bg-preview: #0f172a;--font-sans: "Inter", system-ui, -apple-system, sans-serif;--font-heading: "Outfit", sans-serif;--radius-xl: 24px;--radius-lg: 16px;--radius-md: 12px;--radius-sm: 8px;--header-text: linear-gradient(135deg, #fff, #94a3b8);--transition-speed: .4s;--ease: cubic-bezier(.4, 0, .2, 1)}[data-theme=light]{--bg-dark: #f0f2f5;--bg-card: rgba(255, 255, 255, .7);--bg-card-hover: rgba(255, 255, 255, .9);--glass-surface: rgba(255, 255, 255, .4);--glass-border: rgba(255, 255, 255, .5);--glass-border-focus: rgba(255, 255, 255, .8);--text-main: #0f172a;--text-muted: #64748b;--border: rgba(0, 0, 0, .08);--border-focus: rgba(0, 0, 0, .15);--shadow-glass: 0 8px 32px 0 rgba(31, 38, 135, .07);--bg-subtle: rgba(0, 0, 0, .03);--bg-input: #ffffff;--bg-preview: #f8fafc;--header-text: linear-gradient(135deg, #0f172a, #475569)}*{box-sizing:border-box;margin:0;padding:0}body{margin:0;padding:0;font-family:var(--font-sans);background:var(--bg-dark);color:var(--text-main);background-image:radial-gradient(at 0% 0%,rgba(99,102,241,.15) 0px,transparent 50%),radial-gradient(at 100% 0%,rgba(139,92,246,.15) 0px,transparent 50%),radial-gradient(at 100% 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#6366f180}.range-value{font-size:.75rem;color:var(--text-muted);text-align:right}.theme-toggle{position:fixed;bottom:2rem;right:2rem;width:56px;height:56px;border-radius:20px;background:var(--bg-card);border:1px solid var(--glass-border);backdrop-filter:blur(20px) saturate(180%);-webkit-backdrop-filter:blur(20px) saturate(180%);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .4s var(--ease);z-index:200;box-shadow:var(--shadow-glass);color:var(--text-main);overflow:hidden}.theme-toggle:before{content:"";position:absolute;inset:0;background:var(--glass-shine);opacity:.3}.theme-toggle:hover{transform:translateY(-5px) scale(1.05);border-color:var(--primary);box-shadow:0 15px 35px #0006,var(--shadow-glow);color:var(--primary)}.theme-toggle .icon-container{position:relative;z-index:2;display:flex;align-items:center;justify-content:center;animation:rotateIn .5s var(--ease)}@keyframes rotateIn{0%{transform:rotate(-90deg) 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