:root {
  --bg:#f5f2ec; --surface:#fff; --surface2:#f0ece4;
  --primary:#2d4a3e; --primary-light:#3d6b5a; --primary-faint:#e8f0ec;
  --accent:#c8a96e; --accent-light:#f0e4c8;
  --text:#1a1a1a; --text-muted:#7a7468; --border:#ddd8ce;
  --shadow:0 2px 20px rgba(45,74,62,.07); --shadow-md:0 4px 32px rgba(45,74,62,.12);
  --r1:#2d4a3e; --r2:#5a9680; --r3:#8db8a8; --r4:#c8a96e; --r5:#a08050; --r6:#b0a090;
}
*{margin:0;padding:0;box-sizing:border-box;}
body{font-family:'Noto Sans KR',sans-serif;background:var(--bg);min-height:100vh;display:flex;flex-direction:column;align-items:center;}

/* NAV */
.nav{width:100%;max-width:820px;display:flex;align-items:center;padding:18px 20px 0;gap:0;}
.nav-brand{display:flex;align-items:center;gap:10px;flex:1;}
.nav-avatar{width:34px;height:34px;background:var(--primary);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:15px;}
.nav-title{font-family:'Noto Serif KR',serif;font-size:15px;font-weight:700;color:var(--primary);}
.nav-tabs{display:flex;gap:2px;background:var(--surface2);border-radius:12px;padding:3px;}
.nav-tab{padding:6px 14px;border:none;background:transparent;border-radius:9px;font-family:'Noto Sans KR',sans-serif;font-size:12px;font-weight:500;color:var(--text-muted);cursor:pointer;transition:all .2s;}
.nav-tab.active{background:var(--surface);color:var(--primary);box-shadow:0 1px 4px rgba(0,0,0,.08);}

/* PAGES */
.page{display:none;width:100%;max-width:820px;flex:1;}
.page.active{display:flex;flex-direction:column;}

/* ── CHAT ── */
.chat-wrap{flex:1;display:flex;flex-direction:column;padding:0 16px;}
.messages{flex:1;display:flex;flex-direction:column;gap:14px;padding:14px 0 18px;height:calc(100vh - 206px);overflow-y:auto;scroll-behavior:smooth;}
.messages::-webkit-scrollbar{width:3px;}
.messages::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px;}
.message{display:flex;flex-direction:column;animation:fadeUp .25s ease;}
.message.user{align-items:flex-end;} .message.coach{align-items:flex-start;}
@keyframes fadeUp{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}
.msg-label{font-size:10px;color:var(--text-muted);margin-bottom:4px;font-weight:400;letter-spacing:.3px;}
.bubble{max-width:80%;padding:12px 16px;border-radius:18px;font-size:14px;line-height:1.8;white-space:pre-wrap;word-break:keep-all;}
.message.user .bubble{background:var(--primary);color:#fff;border-bottom-right-radius:4px;}
.message.coach .bubble{background:var(--surface);color:var(--text);border-bottom-left-radius:4px;border:1px solid var(--border);box-shadow:var(--shadow);}
.summary-card{background:var(--primary-faint);border:1px solid #c5d9cf;border-radius:14px;padding:14px 16px;margin:6px 0;animation:fadeUp .3s ease;}
.summary-card h4{font-size:11px;font-weight:600;color:var(--primary);margin-bottom:8px;letter-spacing:.5px;text-transform:uppercase;}
.summary-row{display:flex;gap:8px;font-size:13px;color:var(--text);margin-bottom:5px;line-height:1.5;}
.summary-row span:first-child{color:var(--primary);font-weight:600;min-width:68px;flex-shrink:0;}
.typing-indicator{display:flex;flex-direction:column;align-items:flex-start;animation:fadeUp .25s ease;}
.typing-bubble{background:var(--surface);border:1px solid var(--border);border-radius:18px;border-bottom-left-radius:4px;padding:12px 17px;display:flex;gap:5px;align-items:center;box-shadow:var(--shadow);}
.typing-dot{width:6px;height:6px;background:var(--accent);border-radius:50%;animation:typing 1.2s infinite;}
.typing-dot:nth-child(2){animation-delay:.2s;} .typing-dot:nth-child(3){animation-delay:.4s;}
@keyframes typing{0%,60%,100%{transform:translateY(0);opacity:.35}30%{transform:translateY(-5px);opacity:1}}
.input-area{padding:10px 16px 18px;background:var(--bg);position:sticky;bottom:0;}
.input-row{display:flex;gap:7px;background:var(--surface);border:1.5px solid var(--border);border-radius:16px;padding:8px 10px;box-shadow:var(--shadow);transition:border-color .2s;}
.input-row:focus-within{border-color:var(--primary-light);}
textarea{flex:1;border:none;outline:none;resize:none;font-family:'Noto Sans KR',sans-serif;font-size:14px;line-height:1.6;color:var(--text);background:transparent;min-height:22px;max-height:110px;overflow-y:auto;}
textarea::placeholder{color:var(--text-muted);font-weight:300;}
.btn-icon{width:34px;height:34px;border:none;border-radius:9px;cursor:pointer;display:flex;align-items:center;justify-content:center;flex-shrink:0;align-self:flex-end;transition:all .15s;}
.btn-send{background:var(--primary);} .btn-send:hover{background:var(--primary-light);}
.btn-send:active{transform:scale(.94);} .btn-send:disabled{background:var(--border);cursor:not-allowed;}
.btn-send svg{width:15px;height:15px;fill:white;}
.btn-wrap{background:var(--accent-light);font-size:15px;} .btn-wrap:hover{background:#e8d4a8;}
.quick-prompts{display:flex;gap:6px;flex-wrap:wrap;padding:10px 16px 4px;width:100%;max-width:820px;}
.quick-btn{padding:5px 12px;background:var(--surface);border:1px solid var(--border);border-radius:20px;font-family:'Noto Sans KR',sans-serif;font-size:12px;color:var(--text-muted);cursor:pointer;transition:all .2s;white-space:nowrap;}
.quick-btn:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-faint);}
.day-divider{display:flex;align-items:center;gap:10px;padding:2px 0;}
.day-divider span{font-size:11px;color:var(--text-muted);white-space:nowrap;font-weight:300;}
.day-divider::before,.day-divider::after{content:'';flex:1;height:1px;background:var(--border);}

/* ── PLAN ── */
.plan-wrap{padding:16px;display:flex;flex-direction:column;gap:14px;overflow-y:auto;max-height:calc(100vh - 80px);}
.section-card{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:18px;box-shadow:var(--shadow);}
.section-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;}
.section-title{font-family:'Noto Serif KR',serif;font-size:15px;font-weight:700;color:var(--primary);}
.btn-sm{padding:7px 14px;background:var(--primary);color:white;border:none;border-radius:9px;font-family:'Noto Sans KR',sans-serif;font-size:12px;font-weight:500;cursor:pointer;transition:background .2s;}
.btn-sm:hover{background:var(--primary-light);}
.btn-sm.outline{background:transparent;color:var(--primary);border:1px solid var(--primary);}
.btn-sm.outline:hover{background:var(--primary-faint);}

/* D-day 배너 */
.dday-banner{background:var(--primary);border-radius:14px;padding:18px 20px;display:flex;align-items:center;justify-content:space-between;color:white;margin-bottom:16px;}
.dday-left .label{font-size:11px;opacity:.65;margin-bottom:2px;}
.dday-left .number{font-family:'Noto Serif KR',serif;font-size:42px;font-weight:700;line-height:1;}
.dday-left .sub{font-size:12px;opacity:.6;margin-top:4px;}
.dday-right{text-align:right;}
.dday-right .date{font-size:13px;opacity:.8;}
.dday-right .progress-wrap{margin-top:8px;}
.dday-right .progress-label{font-size:11px;opacity:.6;margin-bottom:4px;}
.dday-progress{width:120px;height:6px;background:rgba(255,255,255,.25);border-radius:3px;overflow:hidden;}
.dday-progress-fill{height:100%;background:var(--accent);border-radius:3px;transition:width 1s ease;}

/* 원형 차트 */
.pie-section{display:flex;align-items:center;gap:20px;flex-wrap:wrap;}
.pie-canvas-wrap{position:relative;flex-shrink:0;}
.pie-canvas-wrap canvas{display:block;}
.pie-center{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);text-align:center;}
.pie-center .val{font-family:'Noto Serif KR',serif;font-size:22px;font-weight:700;color:var(--primary);}
.pie-center .lbl{font-size:10px;color:var(--text-muted);}
.pie-legend{flex:1;display:flex;flex-direction:column;gap:8px;min-width:130px;}
.legend-item{display:flex;align-items:center;gap:8px;font-size:13px;}
.legend-dot{width:10px;height:10px;border-radius:3px;flex-shrink:0;}
.legend-name{flex:1;color:var(--text);}
.legend-val{color:var(--text-muted);font-size:12px;}

/* 간트 차트 */
.gantt-wrap{overflow-x:auto;}
.gantt-table{width:100%;min-width:560px;border-collapse:collapse;}
.gantt-table th{font-size:11px;font-weight:600;color:var(--text-muted);padding:4px 6px;text-align:center;border-bottom:1px solid var(--border);}
.gantt-table td{padding:5px 6px;vertical-align:middle;}
.gantt-subject{font-size:12px;font-weight:500;color:var(--text);white-space:nowrap;padding-right:10px;}
.gantt-cell{position:relative;height:22px;}
.gantt-bar{position:absolute;top:3px;height:16px;border-radius:4px;opacity:.85;transition:opacity .2s;}
.gantt-bar:hover{opacity:1;}
.gantt-month-label{font-size:10px;color:var(--text-muted);text-align:center;}
.gantt-today-line{position:absolute;top:0;bottom:0;width:2px;background:var(--accent);z-index:2;border-radius:1px;}

/* 누적 그래프 */
.bar-chart{display:flex;align-items:flex-end;gap:4px;height:120px;padding-top:8px;}
.bar-col{display:flex;flex-direction:column;align-items:center;gap:3px;flex:1;}
.bar-fill{width:100%;border-radius:4px 4px 0 0;background:var(--primary);transition:height .6s cubic-bezier(.4,0,.2,1);min-height:2px;position:relative;}
.bar-fill:hover::after{content:attr(data-tip);position:absolute;top:-24px;left:50%;transform:translateX(-50%);background:var(--primary);color:white;padding:2px 7px;border-radius:6px;font-size:10px;white-space:nowrap;z-index:3;}
.bar-label{font-size:9px;color:var(--text-muted);white-space:nowrap;}

/* 주간 히트맵 */
.week-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:4px;}
.week-cell{aspect-ratio:1;border-radius:5px;background:var(--surface2);display:flex;align-items:center;justify-content:center;flex-direction:column;gap:1px;transition:transform .1s;}
.week-cell:hover{transform:scale(1.06);}
.week-cell.d1{background:#c5d9cf;} .week-cell.d2{background:#8db8a8;}
.week-cell.d3{background:#5a9680;} .week-cell.d4{background:var(--primary);color:white;}
.week-cell.today{outline:2px solid var(--accent);outline-offset:1px;}
.wk-num{font-size:9px;font-weight:600;} .wk-day{font-size:8px;opacity:.7;}

/* 오늘 목표 */
.goal-item{display:flex;align-items:center;gap:9px;padding:9px 11px;background:var(--bg);border-radius:9px;margin-bottom:5px;cursor:pointer;transition:background .15s;border:1px solid transparent;}
.goal-item:hover{background:var(--primary-faint);border-color:#c5d9cf;}
.goal-check{width:19px;height:19px;border:2px solid var(--border);border-radius:6px;flex-shrink:0;display:flex;align-items:center;justify-content:center;transition:all .2s;}
.goal-item.checked .goal-check{background:var(--primary);border-color:var(--primary);}
.goal-item.checked .goal-check::after{content:'✓';color:white;font-size:11px;font-weight:700;}
.goal-text{font-size:13px;color:var(--text);flex:1;}
.goal-item.checked .goal-text{text-decoration:line-through;color:var(--text-muted);}
.add-goal-row{display:flex;gap:7px;margin-top:7px;}
.add-goal-input{flex:1;padding:8px 11px;border:1.5px solid var(--border);border-radius:9px;font-family:'Noto Sans KR',sans-serif;font-size:13px;color:var(--text);outline:none;background:var(--surface);transition:border-color .2s;}
.add-goal-input:focus{border-color:var(--primary-light);}
.btn-add{padding:8px 14px;background:var(--primary-faint);color:var(--primary);border:1px solid #c5d9cf;border-radius:9px;font-family:'Noto Sans KR',sans-serif;font-size:13px;font-weight:500;cursor:pointer;transition:all .2s;white-space:nowrap;}
.btn-add:hover{background:var(--primary);color:white;}

/* ── 알림 설정 ── */
.alarm-list{display:flex;flex-direction:column;gap:8px;}
.alarm-item{display:flex;align-items:center;gap:10px;padding:11px 14px;background:var(--bg);border-radius:10px;border:1px solid var(--border);}
.alarm-icon{font-size:16px;width:28px;text-align:center;}
.alarm-info{flex:1;}
.alarm-name{font-size:13px;font-weight:500;color:var(--text);}
.alarm-time{font-size:12px;color:var(--text-muted);margin-top:1px;}
.alarm-toggle{position:relative;width:40px;height:22px;flex-shrink:0;}
.alarm-toggle input{opacity:0;width:0;height:0;}
.toggle-slider{position:absolute;inset:0;background:var(--border);border-radius:11px;cursor:pointer;transition:.3s;}
.toggle-slider::before{content:'';position:absolute;width:16px;height:16px;left:3px;bottom:3px;background:white;border-radius:50%;transition:.3s;}
.alarm-toggle input:checked+.toggle-slider{background:var(--primary);}
.alarm-toggle input:checked+.toggle-slider::before{transform:translateX(18px);}
.alarm-time-input{padding:4px 8px;border:1.5px solid var(--border);border-radius:7px;font-family:'Noto Sans KR',sans-serif;font-size:13px;color:var(--text);outline:none;background:var(--surface);transition:border-color .2s;width:90px;}
.alarm-time-input:focus{border-color:var(--primary-light);}
.alarm-perm-btn{padding:8px 14px;background:var(--accent-light);color:#7a5c20;border:1px solid #e0c88a;border-radius:9px;font-family:'Noto Sans KR',sans-serif;font-size:12px;cursor:pointer;transition:all .2s;width:100%;}
.alarm-perm-btn:hover{background:#e8d4a8;}
.perm-notice{font-size:12px;color:var(--text-muted);text-align:center;padding:6px;line-height:1.6;}

/* ── LOG ── */
.log-wrap{padding:16px;display:flex;flex-direction:column;gap:11px;overflow-y:auto;max-height:calc(100vh - 80px);}
.log-header h2{font-family:'Noto Serif KR',serif;font-size:19px;font-weight:700;color:var(--primary);margin-bottom:3px;}
.log-header p{font-size:13px;color:var(--text-muted);}
.log-empty{text-align:center;padding:50px 20px;color:var(--text-muted);font-size:14px;line-height:2.2;}
.log-card{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:15px 17px;box-shadow:var(--shadow);animation:fadeUp .25s ease;}
.log-card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px;}
.log-date{font-size:13px;font-weight:600;color:var(--primary);}
.log-condition{display:flex;align-items:center;gap:5px;font-size:12px;color:var(--text-muted);}
.cond-dots{display:flex;gap:2px;}
.cond-dot{width:7px;height:7px;border-radius:50%;background:var(--border);}
.cond-dot.fill{background:var(--primary);}
.log-keywords{display:flex;gap:5px;flex-wrap:wrap;margin-bottom:8px;}
.kw-tag{padding:3px 9px;background:var(--accent-light);color:#7a5c20;border-radius:20px;font-size:11px;}
.log-goals-row{display:flex;gap:5px;flex-wrap:wrap;margin-bottom:8px;}
.lg-tag{padding:3px 9px;border-radius:7px;font-size:11px;}
.lg-tag.done{background:var(--primary-faint);color:var(--primary);}
.lg-tag.undone{background:var(--surface2);color:var(--text-muted);text-decoration:line-through;}
.log-memo{font-size:13px;color:var(--text);line-height:1.6;padding-top:9px;border-top:1px solid var(--border);}
.log-memo-label{font-size:11px;color:var(--text-muted);margin-bottom:3px;}
.log-chat-toggle{display:inline-block;margin-top:8px;font-size:12px;color:var(--primary);cursor:pointer;border:none;background:none;font-family:inherit;padding:0;}
.log-chat-toggle:hover{text-decoration:underline;}
.log-chat-raw{display:none;margin-top:8px;padding:10px;background:var(--surface2);border-radius:8px;font-size:12px;line-height:1.7;max-height:300px;overflow-y:auto;white-space:pre-wrap;word-break:keep-all;}
.log-chat-raw.show{display:block;}
.log-chat-msg{margin-bottom:4px;}
.log-chat-msg.user{color:var(--primary);font-weight:500;}
.log-chat-msg.coach{color:var(--text-muted);}

/* 공통 */
.form-input{padding:9px 13px;border:1.5px solid var(--border);border-radius:9px;font-family:'Noto Sans KR',sans-serif;font-size:14px;color:var(--text);outline:none;transition:border-color .2s;background:var(--bg);width:100%;}
.form-input:focus{border-color:var(--primary-light);}
.form-label{font-size:12px;font-weight:600;color:var(--primary);letter-spacing:.3px;display:block;margin-bottom:5px;}
.subject-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:7px;}
.subject-item{display:flex;flex-direction:column;gap:3px;}
.subject-item label{font-size:11px;color:var(--text-muted);}
.subject-item input{padding:7px 9px;border:1.5px solid var(--border);border-radius:7px;font-family:'Noto Sans KR',sans-serif;font-size:13px;color:var(--text);outline:none;background:var(--bg);transition:border-color .2s;text-align:center;}
.subject-item input:focus{border-color:var(--primary-light);}
.collapse-form{display:none;flex-direction:column;gap:12px;margin-top:14px;padding-top:14px;border-top:1px solid var(--border);}
.collapse-form.show{display:flex;}

/* 공부시간 로그 */
.log-study{display:flex;align-items:center;gap:6px;flex-wrap:wrap;margin-bottom:8px;}
.log-study-label{font-size:11px;color:var(--text-muted);}
.log-study-chips{display:flex;gap:4px;flex-wrap:wrap;}
.log-study-chip{padding:2px 7px;background:var(--surface2);border:1px solid var(--border);border-radius:12px;font-size:11px;color:var(--text-muted);}

/* 안내 탭 */
.info-section{margin-bottom:18px;}
.info-section h4{font-size:13px;font-weight:600;color:var(--primary);margin-bottom:7px;}
.info-section p,.info-section li{font-size:13px;color:var(--text);line-height:2;}
.info-section ul{padding-left:18px;}
.info-badge{display:inline-block;padding:1px 7px;border-radius:10px;font-size:11px;font-weight:500;margin-right:3px;}
.info-badge.primary{background:var(--primary-faint);color:var(--primary);}
.info-badge.accent{background:var(--accent-light);color:#7a5c20;}

.toast{position:fixed;bottom:28px;left:50%;transform:translateX(-50%) translateY(20px);background:var(--primary);color:white;padding:10px 20px;border-radius:28px;font-size:13px;font-weight:500;opacity:0;transition:all .3s;pointer-events:none;z-index:999;white-space:nowrap;}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0);}

.modal-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:100;align-items:center;justify-content:center;}
.modal-overlay.show{display:flex;}
.modal{background:var(--surface);border-radius:20px;padding:26px 22px;width:90%;max-width:400px;box-shadow:var(--shadow-md);animation:fadeUp .25s ease;}
.modal h3{font-family:'Noto Serif KR',serif;font-size:16px;font-weight:700;color:var(--primary);margin-bottom:7px;}
.modal p{font-size:13px;color:var(--text-muted);margin-bottom:16px;line-height:1.6;}
.modal-actions{display:flex;gap:7px;justify-content:flex-end;margin-top:14px;}
.btn-secondary{padding:8px 16px;background:var(--surface2);color:var(--text-muted);border:none;border-radius:9px;font-family:'Noto Sans KR',sans-serif;font-size:13px;cursor:pointer;}
.btn-secondary:hover{background:var(--border);}
.btn-primary{padding:8px 16px;background:var(--primary);color:white;border:none;border-radius:9px;font-family:'Noto Sans KR',sans-serif;font-size:13px;font-weight:500;cursor:pointer;}
.btn-primary:hover{background:var(--primary-light);}

/* 마무리 버튼 */
.btn-wrap-text{border:none;background:var(--accent-light);border-radius:9px;cursor:pointer;padding:0 10px;height:34px;display:flex;align-items:center;gap:5px;font-size:12px;font-weight:500;color:var(--primary);flex-shrink:0;align-self:flex-end;transition:all .15s;white-space:nowrap;}
.btn-wrap-text:hover{background:#e8d4a8;}
/* 스페이서 */
.spacer-sm{height:12px;} .spacer-md{height:14px;}
/* 섹션 헤더 no-margin */
.section-header-flush{margin-bottom:0;}
/* 간트 범례 */
.gantt-legend{display:flex;gap:12px;flex-wrap:wrap;padding:8px 0 2px;}
.gantt-legend-item{display:flex;align-items:center;gap:5px;font-size:11px;color:var(--text-muted);}
.gantt-legend-dot{width:12px;height:8px;border-radius:2px;}
.gantt-legend-today{width:2px;height:12px;background:var(--accent);border-radius:1px;}
/* 기록 헤더 */
.log-header-wrap{display:flex;align-items:flex-start;justify-content:space-between;gap:10px;}
.log-actions{display:flex;gap:6px;flex-shrink:0;margin-top:2px;}
/* 바 차트 래퍼 */
.bar-chart-footer{display:flex;justify-content:space-between;margin-top:4px;padding:0 2px;}
.bar-chart-footer span{font-size:10px;color:var(--text-muted);}
/* D-day 빈 상태 */
.dday-empty{background:var(--primary-faint);border:1.5px dashed #c5d9cf;border-radius:12px;padding:18px 20px;text-align:center;margin-bottom:4px;}
.dday-empty-icon{font-size:22px;margin-bottom:8px;}
.dday-empty-title{font-family:'Noto Serif KR',serif;font-size:14px;font-weight:700;color:var(--primary);margin-bottom:6px;}
.dday-empty-desc{font-size:12px;color:var(--text-muted);line-height:1.7;}
/* 간트 빈 상태 */
.gantt-empty{font-size:13px;color:var(--text-muted);text-align:center;padding:20px;}
/* 에스컬레이션 배너 */
.escalation-banner{background:var(--accent-light);border:1px solid #e0c88a;border-radius:12px;padding:12px 16px;margin-top:8px;display:flex;align-items:center;gap:10px;animation:fadeUp .3s ease;}
.escalation-banner-text{flex:1;font-size:13px;color:#5a4520;line-height:1.6;}
.escalation-banner-text b{font-weight:600;}
.btn-escalation{padding:7px 14px;background:#c8a96e;color:white;border:none;border-radius:9px;font-family:'Noto Sans KR',sans-serif;font-size:12px;font-weight:500;cursor:pointer;white-space:nowrap;transition:background .2s;}
.btn-escalation:hover{background:#b08840;}
/* ── AUTH 로그인 ── */
#auth-screen{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;padding:20px;}
#app{display:none;flex-direction:column;align-items:center;width:100%;min-height:100vh;}
.auth-card{background:var(--surface);border:1px solid var(--border);border-radius:20px;padding:32px 28px;width:100%;max-width:380px;box-shadow:var(--shadow-md);}
.auth-logo{text-align:center;margin-bottom:24px;}
.auth-logo .nav-avatar{width:48px;height:48px;font-size:22px;margin:0 auto 10px;}
.auth-logo-title{font-family:'Noto Serif KR',serif;font-size:20px;font-weight:700;color:var(--primary);}
.auth-logo-sub{font-size:13px;color:var(--text-muted);margin-top:4px;}
.auth-tabs{display:flex;gap:2px;background:var(--surface2);border-radius:10px;padding:3px;margin-bottom:20px;}
.auth-tab{flex:1;padding:8px;border:none;background:transparent;border-radius:8px;font-family:'Noto Sans KR',sans-serif;font-size:13px;font-weight:500;color:var(--text-muted);cursor:pointer;transition:all .2s;}
.auth-tab.active{background:var(--surface);color:var(--primary);box-shadow:0 1px 4px rgba(0,0,0,.08);}
.auth-form{display:flex;flex-direction:column;gap:12px;}
.auth-form .form-input{padding:11px 14px;font-size:14px;}
.auth-form .form-label{margin-bottom:2px;}
.auth-btn{width:100%;padding:12px;background:var(--primary);color:white;border:none;border-radius:10px;font-family:'Noto Sans KR',sans-serif;font-size:14px;font-weight:600;cursor:pointer;transition:background .2s;margin-top:4px;}
.auth-btn:hover{background:var(--primary-light);}
.auth-btn:disabled{background:var(--border);cursor:not-allowed;}
.auth-error{font-size:12px;color:#c0392b;text-align:center;min-height:18px;line-height:1.5;}
.auth-signup-fields{display:none;flex-direction:column;gap:12px;}
.auth-signup-fields.show{display:flex;}
.btn-logout{width:100%;padding:10px;background:transparent;color:#c0392b;border:1.5px solid #e0c8c8;border-radius:9px;font-family:'Noto Sans KR',sans-serif;font-size:13px;font-weight:500;cursor:pointer;transition:all .2s;}
.btn-logout:hover{background:#fdf0f0;border-color:#c0392b;}

@media(max-width:500px){.subject-grid{grid-template-columns:repeat(2,1fr);} .nav-tab{padding:6px 10px;font-size:11px;} .auth-card{padding:24px 20px;}}