:root{--background:#0a0a0c;--foreground:#ffffff;--card-bg:rgba(255,255,255,0.05);--card-border:rgba(255,255,255,0.1);--primary:#4f46e5;--primary-hover:#6366f1;--secondary:#1e293b;--accent:#f43f5e;--text-muted:#94a3b8;--glass:rgba(255,255,255,0.03);--glass-border:rgba(255,255,255,0.08);--safe-area-bottom:env(safe-area-inset-bottom)}*{box-sizing:border-box;padding:0;margin:0;-webkit-tap-highlight-color:transparent}body{background:var(--background);color:var(--foreground);font-family:Pretendard,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;min-height:100vh;overflow-x:hidden;line-height:1.5}h1,h2,h3,h4{font-weight:700;letter-spacing:-.02em}button{cursor:pointer;border:none;background:none;font-family:inherit}.glass-card{background:var(--card-bg);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--card-border);border-radius:20px;padding:24px;transition:all .3s cubic-bezier(.4,0,.2,1)}.primary-button{background:var(--primary);color:white;padding:16px 24px;border-radius:12px;font-weight:600;width:100%;display:flex;align-items:center;justify-content:center;gap:8px;transition:transform .2s}.primary-button:active{transform:scale(.98)}.bottom-nav{position:fixed;bottom:0;left:0;right:0;height:calc(70px + var(--safe-area-bottom));background:rgba(10,10,12,.85);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-top:1px solid var(--glass-border);display:flex;justify-content:space-around;align-items:flex-start;padding-top:12px;padding-bottom:var(--safe-area-bottom);z-index:100}.nav-item{display:flex;flex-direction:column;align-items:center;color:var(--text-muted);gap:4px;font-size:10px;font-weight:500}.nav-item.active{color:var(--primary)}main{padding-bottom:calc(85px + var(--safe-area-bottom));max-width:600px;margin:0 auto;min-height:100vh}.page-container{padding:20px}.login-container{flex-direction:column;min-height:100vh;padding:30px;text-align:center}.login-container,.social-login-btn{display:flex;justify-content:center;align-items:center}.social-login-btn{width:100%;padding:14px;border-radius:12px;gap:12px;font-weight:500;margin-bottom:12px;border:1px solid var(--glass-border);background:var(--glass);color:white}.kakao{background:#fee500;color:#000000;border:none}.naver{background:#03c75a;color:#ffffff;border:none}.google{background:#ffffff;color:#000000;border:none}