:root{--color-cream: #faf7f3;--color-warm-bg: #e5dfdc;--color-brown-50: #f3f0ed;--color-brown-100: #e8e3df;--color-brown-200: #d0c9c3;--color-brown-300: #b0a7a0;--color-brown-400: #8c8279;--color-brown-500: #5c5450;--color-brown-600: #2b2724;--color-brown-700: #1a1715;--color-green-100: #eef1ec;--color-green-400: #889a82;--color-green-500: #617259;--color-rose-100: #f1ebeb;--color-rose-400: #a08888;--color-rose-500: #6e5a5a;--color-gold: #b8a088;--color-gold-dark: #8b735b;--color-gold-light: #efe8e1;--radius: 4px;--radius-sm: 3px;--shadow: 0 1px 6px rgba(0,0,0,.04);--shadow-md: 0 2px 12px rgba(0,0,0,.06);--font-serif: "Georgia", "Noto Serif KR", serif}*{margin:0;padding:0;box-sizing:border-box}html{font-size:16px;-webkit-font-smoothing:antialiased}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Noto Sans KR,sans-serif;background:var(--color-warm-bg);color:var(--color-brown-700);line-height:1.6;min-height:100vh}a{color:inherit;text-decoration:none}button{cursor:pointer;font-family:inherit;border:none;outline:none}input,textarea,select{font-family:inherit;font-size:inherit}.container{max-width:640px;margin:0 auto;padding:16px}.page-title{font-family:var(--font-serif);font-size:1.5rem;font-weight:700;color:var(--color-brown-600);margin-bottom:16px;text-align:center}.card{background:#fff;border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);margin-bottom:16px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:10px 20px;border-radius:var(--radius-sm);font-size:.95rem;font-weight:600;transition:all .2s;white-space:nowrap}.btn-primary{background:var(--color-brown-700);color:#fff;letter-spacing:.02em}.btn-primary:hover{background:#000}.btn-primary:disabled{background:var(--color-brown-200);cursor:not-allowed}.btn-outline{background:transparent;color:var(--color-brown-600);border:1px solid var(--color-brown-600)}.btn-outline:hover{background:var(--color-brown-600);color:#fff}.btn-danger{background:transparent;color:var(--color-rose-500);border:1px solid var(--color-rose-400)}.btn-danger:hover{background:var(--color-rose-500);color:#fff}.btn-sm{padding:6px 12px;font-size:.85rem}.btn-block{width:100%}.input{width:100%;padding:12px 14px;border:1px solid var(--color-brown-200);border-radius:var(--radius-sm);font-size:.95rem;background:#fff;transition:border-color .2s;color:var(--color-brown-700)}.input:focus{outline:none;border-color:var(--color-brown-600);box-shadow:none}.input::placeholder{color:var(--color-brown-300)}.label{display:block;font-size:.85rem;font-weight:600;color:var(--color-brown-500);margin-bottom:6px}.form-group{margin-bottom:16px}.badge{display:inline-block;padding:3px 10px;border-radius:20px;font-size:.8rem;font-weight:600}.badge-green{background:var(--color-green-100);color:var(--color-green-500)}.badge-red{background:var(--color-rose-100);color:var(--color-rose-500)}.badge-brown{background:var(--color-brown-100);color:var(--color-brown-500)}.navbar{background:#fff;border-bottom:1px solid var(--color-brown-100);padding:16px;position:sticky;top:0;z-index:100;display:flex;align-items:center;justify-content:space-between}.navbar-brand{font-family:var(--font-serif);font-size:1rem;font-weight:700;color:var(--color-brown-700);display:flex;align-items:center;gap:6px;letter-spacing:.03em;text-transform:uppercase}.navbar-brand span.emoji{font-size:1.1rem}.navbar-links{display:flex;gap:16px;align-items:center}.navbar-links a,.navbar-links button{font-size:.8rem;color:var(--color-brown-500);background:none;padding:4px 0;border-radius:0;text-transform:uppercase;letter-spacing:.04em;font-weight:500}.navbar-links a:hover,.navbar-links button:hover{background:none;color:var(--color-brown-700)}.footer{text-align:center;padding:24px 16px;font-size:.8rem;color:var(--color-brown-300);border-top:1px solid var(--color-brown-100)}.class-grid{display:grid;gap:16px}.class-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .3s,box-shadow .3s}.class-card:hover{transform:translateY(-2px);box-shadow:0 4px 16px #00000014}.class-card-img{width:100%;height:200px;object-fit:cover;background:var(--color-brown-100)}.class-card-body{padding:16px}.class-card-title{font-family:var(--font-serif);font-size:1.1rem;font-weight:700;color:var(--color-brown-600);margin-bottom:8px}.class-card-info{display:flex;flex-wrap:wrap;gap:12px;font-size:.85rem;color:var(--color-brown-400);margin-bottom:12px}.class-card-info span{display:flex;align-items:center;gap:4px}.class-card-price{font-size:1rem;font-weight:600;color:var(--color-brown-600)}.class-hero-img{width:100%;height:280px;object-fit:cover;background:var(--color-brown-100)}.class-detail-body{padding:20px 16px}.class-detail-title{font-family:var(--font-serif);font-size:1.4rem;font-weight:700;color:var(--color-brown-600);margin-bottom:8px}.class-detail-meta{display:flex;flex-wrap:wrap;gap:16px;margin-bottom:20px;font-size:.9rem;color:var(--color-brown-400)}.class-detail-meta-item{display:flex;align-items:center;gap:6px}.class-detail-section{margin-bottom:24px}.class-detail-section h3{font-family:var(--font-serif);font-size:1rem;color:var(--color-brown-500);margin-bottom:8px}.class-detail-section p{font-size:.95rem;line-height:1.7;color:var(--color-brown-600)}.calendar-nav{display:flex;align-items:center;justify-content:center;gap:12px;margin-bottom:16px}.calendar-nav button{background:var(--color-brown-50);border:1px solid var(--color-brown-200);border-radius:var(--radius-sm);padding:6px 10px;font-size:.9rem;color:var(--color-brown-500)}.calendar-nav button:hover{background:var(--color-brown-100)}.calendar-month{font-family:var(--font-serif);font-size:1.1rem;font-weight:700;color:var(--color-brown-600);min-width:120px;text-align:center}.session-list{display:grid;gap:10px}.session-item{display:flex;align-items:center;justify-content:space-between;padding:16px;background:#fff;border-radius:var(--radius);border:1px solid var(--color-brown-100);transition:border-color .2s}.session-item:hover{border-color:var(--color-brown-600);background:#fff}.session-item.full{opacity:.45}.session-date{font-weight:700;color:var(--color-brown-600);min-width:80px}.session-info{display:flex;align-items:center;gap:10px}.session-remain.available{color:var(--color-green-400)}.session-remain.full{color:var(--color-rose-400)}.session-remain{font-size:.85rem;font-weight:600}.apply-summary{background:var(--color-brown-50);border-radius:var(--radius);padding:14px 16px;margin-bottom:20px}.apply-summary-row{display:flex;justify-content:space-between;padding:4px 0;font-size:.9rem}.apply-summary-row.total{border-top:1px dashed var(--color-brown-200);margin-top:8px;padding-top:10px;font-weight:700;font-size:1rem}.lookup-card{background:#fff;border-radius:var(--radius);padding:16px;box-shadow:var(--shadow);margin-bottom:12px}.lookup-card-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:8px}.lookup-card-title{font-weight:700;color:var(--color-brown-600)}.lookup-card-meta{font-size:.85rem;color:var(--color-brown-400);margin-bottom:8px}.lookup-card-actions{display:flex;gap:8px;justify-content:flex-end}.admin-login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--color-warm-bg);padding:16px}.admin-login-card{background:#fff;border-radius:var(--radius);padding:32px 24px;box-shadow:var(--shadow-md);width:100%;max-width:360px}.admin-login-title{font-family:var(--font-serif);font-size:1.3rem;font-weight:700;color:var(--color-brown-600);text-align:center;margin-bottom:4px}.admin-login-subtitle{font-size:.85rem;color:var(--color-brown-400);text-align:center;margin-bottom:24px}.admin-navbar{background:#fff;border-bottom:1px solid var(--color-brown-100);padding:14px 16px;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:100}.admin-nav-title{font-family:var(--font-serif);font-weight:700;color:var(--color-brown-700);font-size:.95rem;text-transform:uppercase;letter-spacing:.04em}.demo-notice{background:var(--color-brown-50);border-radius:var(--radius);padding:14px 16px;font-size:.85rem;color:var(--color-brown-500);margin-top:20px;text-align:center;font-weight:500}.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:24px}.stat-card{background:#fff;border-radius:var(--radius);padding:16px;text-align:center;box-shadow:var(--shadow)}.stat-number{font-family:var(--font-serif);font-size:1.6rem;font-weight:700;color:var(--color-brown-700)}.stat-label{font-size:.8rem;color:var(--color-brown-400);margin-top:4px}.admin-menu{display:grid;gap:10px}.admin-menu-item{display:flex;align-items:center;justify-content:space-between;padding:16px;background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid transparent;transition:background .2s,border-color .2s}.admin-menu-item:hover{background:var(--color-brown-50);border-color:var(--color-brown-400)}.admin-menu-item-title{font-weight:700;color:var(--color-brown-600)}.admin-menu-item-desc{font-size:.8rem;color:var(--color-brown-400)}.table-wrap{overflow-x:auto}table{width:100%;border-collapse:collapse;font-size:.9rem}th{background:var(--color-brown-50);padding:10px 12px;text-align:left;font-weight:600;color:var(--color-brown-500);border-bottom:2px solid var(--color-brown-200)}td{padding:10px 12px;border-bottom:1px solid var(--color-brown-100)}.toast{position:fixed;bottom:20px;left:50%;transform:translate(-50%);background:var(--color-brown-700);color:#fff;padding:10px 24px;border-radius:24px;font-size:.9rem;z-index:9999;animation:toastIn .3s ease;box-shadow:0 4px 20px #1c171233}@keyframes toastIn{0%{opacity:0;transform:translate(-50%) translateY(10px)}to{opacity:1;transform:translate(-50%) translateY(0)}}@media(min-width:768px){.container{padding:24px}.class-grid{grid-template-columns:repeat(2,1fr)}}@media(min-width:1024px){.class-grid{grid-template-columns:repeat(3,1fr)}}