@import url("https://fonts.googleapis.com/css2?family=Pretendard:wght@400;500;600;700;800&display=swap");:root{--primary:#6366f1;--primary-light:#818cf8;--primary-dark:#4f46e5;--secondary:#10b981;--secondary-light:#34d399;--secondary-dark:#059669;--accent:#f59e0b;--accent-light:#fbbf24;--accent-dark:#d97706;--success:#10b981;--error:#ef4444;--warning:#f59e0b;--gray-50:#f9fafb;--gray-100:#f3f4f6;--gray-200:#e5e7eb;--gray-300:#d1d5db;--gray-400:#9ca3af;--gray-500:#6b7280;--gray-600:#4b5563;--gray-700:#374151;--gray-800:#1f2937;--gray-900:#111827;--bg-primary:#fff;--bg-secondary:#f9fafb;--bg-tertiary:#f3f4f6;--text-primary:#111827;--text-secondary:#4b5563;--text-tertiary:#9ca3af;--text-inverse:#fff;--shadow-sm:0 1px 2px 0 rgba(0,0,0,.05);--shadow:0 1px 3px 0 rgba(0,0,0,.1),0 1px 2px -1px rgba(0,0,0,.1);--shadow-md:0 4px 6px -1px rgba(0,0,0,.1),0 2px 4px -2px rgba(0,0,0,.1);--shadow-lg:0 10px 15px -3px rgba(0,0,0,.1),0 4px 6px -4px rgba(0,0,0,.1);--shadow-xl:0 20px 25px -5px rgba(0,0,0,.1),0 8px 10px -6px rgba(0,0,0,.1);--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--radius-xl:24px;--radius-full:9999px;--space-xs:4px;--space-sm:8px;--space-md:16px;--space-lg:24px;--space-xl:32px;--space-2xl:48px;--space-3xl:64px;--font-family:"Pretendard",-apple-system,BlinkMacSystemFont,system-ui,sans-serif}.dark{--bg-primary:#111827;--bg-secondary:#1f2937;--bg-tertiary:#374151;--text-primary:#f9fafb;--text-secondary:#d1d5db;--text-tertiary:#9ca3af}*,:after,:before{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-family);background:var(--bg-secondary);min-height:100dvh;line-height:1.5}body,h1,h2,h3,h4,h5,h6{color:var(--text-primary)}h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.3}h1{font-size:2rem}h2{font-size:1.5rem}h3{font-size:1.25rem}h4{font-size:1.125rem}p{color:var(--text-secondary);line-height:1.6}.app-container{min-height:100dvh;display:flex;flex-direction:column}.main-content{flex:1 1;padding:var(--space-md);padding-bottom:calc(var(--space-xl) + 80px);max-width:480px;margin:0 auto;width:100%}.header{display:flex;justify-content:space-between;align-items:center;padding:var(--space-md);background:var(--bg-primary);border-bottom:1px solid var(--gray-200);position:-webkit-sticky;position:sticky;top:0;z-index:100}.header-title{font-size:1.25rem;font-weight:700;background:linear-gradient(135deg,var(--primary),var(--secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.header-back{display:flex;align-items:center;gap:var(--space-xs);color:var(--text-secondary);text-decoration:none;font-size:.875rem;font-weight:500}.header-back:hover{color:var(--text-primary)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-sm);padding:var(--space-md) var(--space-lg);font-size:1rem;font-weight:600;border-radius:var(--radius-lg);border:none;cursor:pointer;transition:all .2s ease;text-decoration:none}.btn:active{transform:scale(.98)}.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:var(--text-inverse);box-shadow:var(--shadow-md),0 4px 12px -2px rgba(99,102,241,.4)}.btn-primary:hover{box-shadow:var(--shadow-lg),0 6px 16px -2px rgba(99,102,241,.5);transform:translateY(-1px)}.btn-secondary{background:var(--bg-primary);color:var(--text-primary);border:2px solid var(--gray-200)}.btn-secondary:hover{border-color:var(--primary);color:var(--primary)}.btn-ghost{background:transparent;color:var(--text-secondary)}.btn-ghost:hover{background:var(--gray-100);color:var(--text-primary)}.btn-large{padding:var(--space-lg) var(--space-xl);font-size:1.125rem;border-radius:var(--radius-xl)}.btn-full{width:100%}.card{background:var(--bg-primary);border-radius:var(--radius-lg);padding:var(--space-lg);box-shadow:var(--shadow)}.card-elevated{box-shadow:var(--shadow-md)}.home-greeting{margin-bottom:var(--space-xl)}.home-greeting h1{font-size:1.75rem;margin-bottom:var(--space-xs)}.home-greeting p{font-size:1.125rem;color:var(--text-secondary)}.upload-cta{background:linear-gradient(135deg,var(--primary) 0,var(--primary-dark) 100%);border-radius:var(--radius-xl);padding:var(--space-2xl);text-align:center;color:var(--text-inverse);margin-bottom:var(--space-xl);position:relative;overflow:hidden}.upload-cta:before{content:"";position:absolute;top:-50%;right:-50%;width:200%;height:200%;background:radial-gradient(circle,hsla(0,0%,100%,.1) 0,transparent 70%);animation:pulse 4s ease-in-out infinite}@keyframes pulse{0%,to{transform:scale(1);opacity:.5}50%{transform:scale(1.1);opacity:.3}}.upload-cta-icon{width:80px;height:80px;background:hsla(0,0%,100%,.2);border-radius:var(--radius-full);display:flex;align-items:center;justify-content:center;margin:0 auto var(--space-lg);font-size:2.5rem;position:relative;z-index:1}.upload-cta h2{font-size:1.5rem;color:var(--text-inverse);margin-bottom:var(--space-sm);position:relative;z-index:1}.upload-cta p{color:hsla(0,0%,100%,.8);margin-bottom:var(--space-lg);position:relative;z-index:1}.upload-cta .btn{background:var(--bg-primary);color:var(--primary);position:relative;z-index:1}.upload-cta .btn:hover{background:var(--gray-50)}.section-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--space-md)}.section-title{font-size:1.125rem;font-weight:600;color:var(--text-primary)}.section-link{font-size:.875rem;color:var(--primary);text-decoration:none;font-weight:500}.recent-records{display:flex;gap:var(--space-md);overflow-x:auto;margin:0 calc(-1 * var(--space-md));padding:0 var(--space-md) var(--space-sm)}.recent-records::-webkit-scrollbar{display:none}.record-card{flex-shrink:0;width:140px;background:var(--bg-primary);border-radius:var(--radius-lg);padding:var(--space-md);text-align:center;box-shadow:var(--shadow);transition:transform .2s,box-shadow .2s;cursor:pointer}.record-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}.record-date{font-size:.75rem;color:var(--text-tertiary);margin-bottom:var(--space-xs)}.record-status{width:48px;height:48px;border-radius:var(--radius-full);display:flex;align-items:center;justify-content:center;margin:0 auto var(--space-sm);font-size:1.5rem}.record-status.completed{background:rgba(16,185,129,.1);color:var(--success)}.record-concepts{font-size:.75rem;color:var(--text-secondary);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.empty-state{text-align:center;padding:var(--space-2xl) var(--space-lg);color:var(--text-tertiary)}.empty-state-icon{font-size:3rem;margin-bottom:var(--space-md);opacity:.5}.empty-state p{font-size:.875rem}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.fade-in{animation:fadeIn .3s ease-out}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.slide-up{animation:slideUp .4s ease-out}.text-center{text-align:center}.text-left{text-align:left}.text-right{text-align:right}.mt-sm{margin-top:var(--space-sm)}.mt-md{margin-top:var(--space-md)}.mt-lg{margin-top:var(--space-lg)}.mt-xl{margin-top:var(--space-xl)}.mb-sm{margin-bottom:var(--space-sm)}.mb-md{margin-bottom:var(--space-md)}.mb-lg{margin-bottom:var(--space-lg)}.mb-xl{margin-bottom:var(--space-xl)}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-center{justify-content:center}.justify-between{justify-content:space-between}.gap-sm{gap:var(--space-sm)}.gap-md{gap:var(--space-md)}.gap-lg{gap:var(--space-lg)}