:root{--bg-primary: #0f172a;--bg-secondary: #1e293b;--bg-glass: rgba(30, 41, 59, .7);--text-primary: #f8fafc;--text-secondary: #cbd5e1;--text-muted: #94a3b8;--accent-violet: #a78bfa;--accent-violet-hover: #c4b5fd;--accent-violet-glow: rgba(167, 139, 250, .7);--accent-cyan: #22d3ee;--accent-cyan-hover: #67e8f9;--accent-cyan-glow: rgba(34, 211, 238, .7);--border-color: rgba(255, 255, 255, .1);--border-highlight: rgba(139, 92, 246, .5);--font-heading: "Outfit", sans-serif;--font-body: "Inter", sans-serif;--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--spacing-2xl: 3rem;--spacing-3xl: 4rem;--radius-sm: .375rem;--radius-md: .5rem;--radius-lg: .75rem;--radius-xl: 1rem;--radius-2xl: 1.5rem;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05);--shadow-glow: 0 0 25px var(--accent-violet-glow);--shadow-cyan: 0 0 25px var(--accent-cyan-glow);--transition-fast: .15s ease-in-out;--transition-normal: .3s ease-in-out;--transition-slow: .5s ease-in-out}.theme-black{--bg-primary: #000000;--bg-secondary: #0a0a0a;--bg-glass: rgba(0, 0, 0, .7);--text-primary: #ffffff;--text-secondary: #d1d5db;--text-muted: #6b7280;--border-color: rgba(255, 255, 255, .1)}.theme-light{--bg-primary: #f8fafc;--bg-secondary: #ffffff;--bg-glass: rgba(255, 255, 255, .7);--text-primary: #0f172a;--text-secondary: #334155;--text-muted: #64748b;--border-color: rgba(0, 0, 0, .1);--border-highlight: rgba(139, 92, 246, .3);--accent-violet: #8b5cf6;--accent-cyan: #06b6d4}*{margin:0;padding:0;box-sizing:border-box}html,body,#root{background-color:var(--bg-primary);color:var(--text-primary);font-family:var(--font-body);line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;min-height:100vh;width:100%}.app-container{display:flex;min-height:100vh}.sidebar{width:260px;flex-shrink:0;position:fixed;top:0;bottom:0;left:0;overflow-y:auto;z-index:50;background:var(--bg-secondary);border-right:1px solid var(--border-color);box-shadow:var(--shadow-lg)}.main-content{flex-grow:1;margin-left:260px;display:flex;flex-direction:column;min-height:100vh}h1,h2,h3,h4,h5,h6{font-family:var(--font-heading);font-weight:700;line-height:1.2;color:var(--text-primary)}a{color:inherit;text-decoration:none;transition:color var(--transition-fast)}button{font-family:var(--font-body);border:none;background:none;cursor:pointer}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 var(--spacing-md)}.glass{background:var(--bg-glass);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border-color)}.page-header-bg{position:absolute;top:0;left:0;right:0;height:60vh;background-image:linear-gradient(to bottom,transparent,var(--bg-primary)),url(/pup_flag_bg.png);background-size:cover;background-position:center top;background-blend-mode:normal,soft-light;pointer-events:none;z-index:0}.text-gradient{background:linear-gradient(135deg,var(--accent-violet) 0%,var(--accent-cyan) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;color:transparent}.btn{display:inline-flex;align-items:center;justify-content:center;padding:var(--spacing-sm) var(--spacing-lg);border-radius:var(--radius-md);font-weight:600;transition:all var(--transition-normal)}.btn-primary{background:linear-gradient(135deg,var(--accent-violet) 0%,var(--accent-cyan) 100%);color:#fff;box-shadow:var(--shadow-md)}.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-glow)}.btn-outline{border:1px solid var(--accent-violet);color:var(--text-primary)}.btn-outline:hover{background:var(--accent-violet-glow);transform:translateY(-2px)}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.animate-fade-in{animation:fadeIn var(--transition-slow) forwards}