/* style.css — 시험 시간표 스케줄러 앱 */

/* ── 디자인 토큰 ── */
:root {
  --c-primary:      #3a4a6b;   /* 차분한 인디고 */
  --c-primary-dark: #2c3850;
  --c-primary-soft: #eef1f6;   /* 옅은 배경 강조 */
  --c-success:      #4b8b62;   /* 차분한 초록 */
  --c-success-dark: #3c7350;
  --c-success-soft: #eef5f0;
  --c-danger:       #b4543f;

  --c-text:    #2c3038;
  --c-muted:   #6b7280;
  --c-faint:   #9aa1ac;
  --c-border:  #e3e6ec;
  --c-bg:      #f5f6f8;
  --c-card:    #ffffff;

  --radius:    10px;
  --radius-sm: 6px;
  --shadow:    0 1px 3px rgba(20,28,48,.08);
  --shadow-md: 0 2px 8px rgba(20,28,48,.10);

  --fs-sm:  .82rem;
  --fs-base: .92rem;
  --fs-lg:  1.05rem;
  --fs-xl:  1.3rem;

  --gap:    16px;
  --gap-sm: 8px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: 'Apple SD Gothic Neo', 'Malgun Gothic', sans-serif;
  background: var(--c-bg);
  color: var(--c-text);
  line-height: 1.5;
  min-height: 100vh;
  font-size: 16px;
}

/* ── 헤더 ── */
.app-header {
  background: var(--c-primary);
  color: #fff;
  padding: 16px 32px;
  display: flex;
  align-items: center;
  gap: 14px;
}
.app-header .h1 { font-size: var(--fs-xl); font-weight: 700; letter-spacing: -.01em; }
.app-header h1  { font-size: var(--fs-xl); font-weight: 700; }
.app-header .sub { font-size: var(--fs-sm); opacity: .75; margin-top: 3px; }

/* ── 진행 표시줄 ── */
.progress-bar {
  background: var(--c-card);
  padding: 0 32px;
  border-bottom: 1px solid var(--c-border);
}
.steps {
  display: flex;
  max-width: 900px;
  margin: 0 auto;
}
.step-indicator {
  flex: 1;
  text-align: center;
  padding: 12px 4px;
  font-size: var(--fs-sm);
  color: var(--c-faint);
  position: relative;
  cursor: default;
  transition: color .2s;
}
.step-indicator::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 3px;
  background: transparent;
  transition: background .2s;
}
.step-indicator.active  { color: var(--c-primary); font-weight: 700; }
.step-indicator.active::after  { background: var(--c-primary); }
.step-indicator.done   { color: var(--c-success); cursor: pointer; }
.step-indicator.done:hover { color: var(--c-success-dark); text-decoration: underline; }
.step-indicator.done::after   { background: var(--c-success); }
.step-num {
  display: inline-flex;
  width: 22px; height: 22px;
  border-radius: 50%;
  background: #e4e7ec;
  color: var(--c-muted);
  font-size: .78em;
  font-weight: 700;
  align-items: center;
  justify-content: center;
  margin-right: 5px;
  transition: background .2s, color .2s;
}
.step-indicator.active .step-num  { background: var(--c-primary); color: #fff; }
.step-indicator.done   .step-num  { background: var(--c-success); color: #fff; }

/* ── 본문 ── */
.app-body { max-width: 900px; margin: 24px auto; padding: 0 16px 60px; }

.card {
  background: var(--c-card);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 20px;
  box-shadow: var(--shadow);
}
.card-title {
  font-size: var(--fs-lg);
  font-weight: 700;
  color: var(--c-text);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--c-border);
}

/* ── 폼 요소 ── */
.form-row {
  display: flex;
  gap: var(--gap);
  margin-bottom: 12px;
  align-items: flex-end;
  flex-wrap: wrap;
}
.form-group { display: flex; flex-direction: column; gap: 4px; }
.form-group label { font-size: var(--fs-sm); color: var(--c-muted); font-weight: 600; }
.form-group input, .form-group select {
  border: 1px solid #ccced4;
  border-radius: var(--radius-sm);
  padding: 7px 10px;
  font-size: var(--fs-base);
  font-family: inherit;
  transition: border-color .2s;
  background: #fff;
}
.form-group input:focus, .form-group select:focus {
  outline: none; border-color: var(--c-primary);
}
.form-group input.w60  { width: 60px; }
.form-group input.w80  { width: 80px; }
.form-group input.w120 { width: 120px; }
.form-group input.w160 { width: 160px; }
.form-group input.w200 { width: 200px; }

/* ── 업로드 영역 ── */
.upload-area {
  border: 2px dashed #c2c6cf;
  border-radius: var(--radius);
  padding: 28px;
  text-align: center;
  cursor: pointer;
  transition: border-color .2s, background .2s;
  background: #fafbfc;
}
.upload-area:hover, .upload-area.drag-over {
  border-color: var(--c-primary);
  background: var(--c-primary-soft);
}
.upload-area.done {
  border-color: var(--c-success);
  background: var(--c-success-soft);
}
.upload-area .upload-icon { font-size: 2em; margin-bottom: 8px; color: var(--c-faint); }
.upload-area.done .upload-icon { color: var(--c-success); }
.upload-area .upload-text { font-size: var(--fs-base); color: var(--c-muted); }
.upload-area.done .upload-text { color: var(--c-success-dark); font-weight: 600; }
.upload-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 4px;
}
@media (max-width: 600px) { .upload-grid { grid-template-columns: 1fr; } }

/* ── 과목 분류 ── */
.subject-classify-table { width: 100%; border-collapse: collapse; font-size: var(--fs-base); }
.subject-classify-table th {
  background: var(--c-primary-soft); padding: 8px 12px;
  text-align: left; font-weight: 700;
}
.subject-classify-table td { padding: 7px 12px; border-bottom: 1px solid #f0f0f0; }
.subject-classify-table tr:last-child td { border-bottom: none; }
.type-tag {
  display: inline-block;
  border-radius: 4px;
  padding: 2px 8px;
  font-size: .8em;
  font-weight: 700;
}
.type-common     { background: #fbf6e8; color: #8a6d1a; border: 1px solid #d8c180; }
.type-science    { background: #eaf1f8; color: #2c5a86; border: 1px solid #9fbdd8; }
.type-humanities { background: #f7eaef; color: #803356; border: 1px solid #d3a3ba; }

/* ── GA 진행 ── */
.ga-section { display: flex; gap: var(--gap); flex-wrap: wrap; }
.ga-panel {
  flex: 1;
  min-width: 240px;
  background: #fafbfc;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 16px;
}
.ga-panel h4 { font-size: var(--fs-base); margin-bottom: 10px; color: var(--c-text); }
.progress-wrap { background: #e4e7ec; border-radius: 4px; height: 8px; margin: 8px 0; }
.progress-fill {
  background: var(--c-primary);
  border-radius: 4px;
  height: 8px;
  width: 0;
  transition: width .3s;
}
.ga-score { font-size: var(--fs-sm); color: var(--c-muted); text-align: right; min-height: 18px; }

/* ── 시간표 미리보기 그리드 ── */
.tt-preview {
  overflow-x: auto;
  margin-top: 8px;
}
.tt-table {
  border-collapse: collapse;
  font-size: var(--fs-sm);
  min-width: 500px;
}
.tt-table th, .tt-table td {
  border: 1px solid #ddd;
  padding: 7px 10px;
  text-align: center;
  cursor: default;
  min-width: 80px;
}
.tt-table th { background: var(--c-primary-soft); font-weight: 700; }
.tt-table td.slot { cursor: pointer; transition: background .15s; user-select: none; }
.tt-table td.slot:hover { filter: brightness(0.95); }
.tt-table td.slot.selected { outline: 3px solid var(--c-primary); }
.cell-common     { background: #fbf6e8; }
.cell-science    { background: #eaf1f8; }
.cell-humanities { background: #f7eaef; }
.grade-sep { background: #f0f1f3 !important; font-weight: 700; color: var(--c-muted); font-size: .8em; }
/* 교시 추가 드롭존: 마지막 교시 다음 칸 */
.tt-table td.slot-add {
  background: #fafbfc;
  color: var(--c-faint);
  font-size: .8em;
  border: 1px dashed #cfcfcf;
  cursor: copy;
}
.tt-table td.slot-add.drop-hot {
  background: var(--c-success-soft);
  color: var(--c-success-dark);
  border: 2px dashed var(--c-success);
  font-weight: 700;
}
/* 세로 배열: 날짜 셀 */
.tt-table td.tt-date {
  background: #e8eaf6;
  font-weight: 700;
  vertical-align: middle;
  white-space: nowrap;
}
/* 세로 배열: 일차 경계선 */
.tt-table tr.day-last td {
  border-bottom: 2px solid #9e9e9e;
}

/* ── 점수 요약 ── */
.score-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 12px;
}
.score-box {
  border-radius: var(--radius-sm);
  padding: 12px;
  background: #fafbfc;
  border: 1px solid var(--c-border);
  border-left: 4px solid;
}
.score-box.g2 { border-left-color: var(--c-primary); }
.score-box.g3 { border-left-color: var(--c-danger); }
.score-box .label { font-size: .78em; color: var(--c-muted); margin-bottom: 6px; font-weight: 700; }
.score-row { display: flex; justify-content: space-between; font-size: .83em; margin: 3px 0; }
.score-total { font-size: 1.1em; font-weight: 800; margin-top: 8px; padding-top: 6px; border-top: 1px solid var(--c-border); text-align: right; }
.score-box.g2 .score-total { color: var(--c-primary); }
.score-box.g3 .score-total { color: var(--c-danger); }

/* ── 특별학생 ── */
.special-search { display: flex; gap: 8px; margin-bottom: 12px; align-items: flex-end; }
.special-search input { flex: 1; }
.special-list { margin-top: 8px; }
.special-candidate {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  background: #f5f6f8;
  margin-bottom: 6px;
  font-size: .88em;
  cursor: pointer;
  transition: background .15s;
}
.special-candidate:hover { background: var(--c-primary-soft); }
.special-candidate.selected { background: var(--c-success-soft); border: 1px solid var(--c-success); }
.special-tag {
  background: #fbf6e8;
  border: 1px solid #d8c180;
  border-radius: 4px;
  padding: 2px 7px;
  font-size: .8em;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  margin: 3px;
}
.special-tag .rm { cursor: pointer; color: var(--c-danger); font-weight: 700; }
.special-tags-wrap { display: flex; flex-wrap: wrap; gap: 4px; margin: 8px 0; }

/* ── 버튼 ── */
.btn {
  padding: 9px 20px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-size: var(--fs-base);
  font-weight: 600;
  cursor: pointer;
  transition: background .15s, border-color .15s, color .15s;
  font-family: inherit;
  line-height: 1.2;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: var(--c-primary);
  color: #fff;
}
.btn-primary:hover { background: var(--c-primary-dark); }
.btn-primary:disabled { background: #c4c8d0; cursor: not-allowed; }
.btn-success {
  background: var(--c-success);
  color: #fff;
}
.btn-success:hover { background: var(--c-success-dark); }
.btn-outline {
  background: #fff;
  color: var(--c-primary);
  border: 1px solid #c2c8d4;
}
.btn-outline:hover { background: var(--c-primary-soft); border-color: var(--c-primary); }
.btn-sm { padding: 6px 14px; font-size: var(--fs-sm); }
.btn-group { display: flex; gap: 10px; justify-content: flex-end; margin-top: 20px; flex-wrap: wrap; }
.btn-group.start { justify-content: flex-start; }

/* ── 헬퍼 ── */
.toolbar {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--c-bg);
  padding: 10px 0;
  margin-bottom: 8px;
  border-bottom: 1px solid var(--c-border);
}
.print-tools { display: flex; gap: 10px; flex-wrap: wrap; }
.hint { color: var(--c-muted); font-size: var(--fs-sm); margin-top: 8px; line-height: 1.6; }
.mt-12 { margin-top: 12px; }

/* ── 알림 ── */
.alert {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: var(--fs-base);
  margin-bottom: 12px;
}
.alert-info    { background: var(--c-primary-soft); border-left: 4px solid var(--c-primary); color: var(--c-primary-dark); }
.alert-success { background: var(--c-success-soft); border-left: 4px solid var(--c-success); color: var(--c-success-dark); }
.alert-warn    { background: #fbf3e0; border-left: 4px solid #d9a93a; color: #8a5a12; }

/* ── 인쇄 스타일 ── */
@page {
  margin: 15mm;
}
@media print {
  .app-header, .progress-bar, .btn-group, .btn, .toolbar { display: none !important; }
  body { background: #fff; }
  .card { box-shadow: none; border: 1px solid #ddd; }
  .app-body { max-width: 100%; margin: 0; padding: 0; }
}