/* ── 기본 리셋 & 변수 ──────────────────────────────── */
:root {
  --bg: #F8FAFC;
  --bg-card: #FFFFFF;
  --text: #0F172A;
  --text-muted: #64748B;
  --border: #E2E8F0;
  --primary: #2563EB;
  --primary-light: #DBEAFE;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);
  --shadow-lg: 0 10px 25px rgba(0,0,0,.1), 0 4px 10px rgba(0,0,0,.06);
  --font: 'Inter', 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;
  --transition: .2s cubic-bezier(.4,0,.2,1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ── 헤더 ──────────────────────────────────────────── */
.header {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  padding: 1rem 1.5rem;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(8px);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: .75rem;
}

.logo {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: .5rem;
}

.logo-icon { font-size: 1.5rem; }

.subtitle {
  font-size: .8rem;
  color: var(--text-muted);
  margin-top: .15rem;
}

.header-right {
  display: flex;
  gap: .5rem;
}

/* ── 버튼 ──────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .55rem 1rem;
  border-radius: var(--radius-sm);
  font-size: .85rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all var(--transition);
  font-family: var(--font);
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover { background: #1D4ED8; transform: translateY(-1px); }

.btn-outline {
  background: transparent;
  border: 1.5px solid var(--border);
  color: var(--text);
}
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }

.btn-icon { font-size: 1rem; }

.btn.loading { opacity: .6; pointer-events: none; }

/* ── 메인 ──────────────────────────────────────────── */
.main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.5rem;
}

/* ── 필터 바 ────────────────────────────────────────── */
.filter-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: .75rem;
  margin-bottom: 1.25rem;
}

.filter-group {
  display: flex;
  align-items: center;
  gap: .4rem;
  flex-wrap: wrap;
}

.filter-label {
  font-size: .8rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-right: .25rem;
}

.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  padding: .35rem .75rem;
  border-radius: 50px;
  font-size: .78rem;
  font-weight: 500;
  border: 1.5px solid var(--border);
  background: var(--bg-card);
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font);
}

.filter-chip:hover { border-color: var(--chip-color, var(--primary)); }

.filter-chip.active {
  background: var(--chip-color, var(--primary));
  color: #fff;
  border-color: var(--chip-color, var(--primary));
}

.chip-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
}

.filter-chip.active .chip-dot { background: #fff !important; }

.filter-chip.loading {
  opacity: 0.7;
  pointer-events: none;
}

.chip-spinner {
  display: inline-block;
  width: 12px;
  height: 12px;
  border: 2px solid transparent;
  border-top: 2px solid currentColor;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-right: 4px;
}

.stats-bar {
  font-size: .78rem;
  color: var(--text-muted);
}

/* ── 캘린더 컨테이너 ───────────────────────────────── */
.calendar-container {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  margin-bottom: 2rem;
}

/* FullCalendar 커스터마이징 */
.fc {
  --fc-border-color: var(--border);
  --fc-today-bg-color: #EFF6FF;
  --fc-page-bg-color: transparent;
  --fc-neutral-bg-color: #F1F5F9;
}

.fc-popover {
  background: #FFFFFF !important;
  border: 1px solid var(--border) !important;
  border-radius: var(--radius-sm) !important;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15) !important;
  max-width: 300px !important;
  z-index: 999 !important;
}

.fc-popover-header {
  background: #FFFFFF !important;
  border-bottom: 1px solid var(--border) !important;
  padding: 8px 12px !important;
  font-weight: 600 !important;
}

.fc-popover-body {
  padding: 8px !important;
  background: #FFFFFF !important;
}

.fc-popover-close {
  background: none !important;
  border: none !important;
  font-size: 16px !important;
  color: var(--text-muted) !important;
}

.fc .fc-toolbar-title {
  font-size: 1.2rem !important;
  font-weight: 700;
}

.fc .fc-toolbar-chunk {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.fc .fc-button-group {
  display: inline-flex;
  gap: 0.5rem;
}

.fc .fc-button {
  border-radius: var(--radius-sm) !important;
  font-weight: 600;
  font-size: .8rem;
  padding: .4rem .75rem;
  font-family: var(--font);
}

.fc .fc-button-primary {
  background: var(--primary) !important;
  border-color: var(--primary) !important;
}

.fc .fc-button-primary:not(:disabled).fc-button-active {
  background: #1D4ED8 !important;
  border-color: #1D4ED8 !important;
}

.fc .fc-daygrid-event {
  border-radius: 4px;
  padding: 1px 4px;
  font-size: .75rem;
  font-weight: 500;
  border: none;
  cursor: pointer;
}

.fc .fc-daygrid-event:hover {
  filter: brightness(1.1);
  transform: scale(1.02);
}

.fc .fc-daygrid-day-number {
  font-weight: 600;
  font-size: .85rem;
  color: var(--text);
}

.fc .fc-col-header-cell-cushion {
  font-weight: 600;
  font-size: .8rem;
  color: var(--text-muted);
}

.fc .fc-day-today .fc-daygrid-day-number {
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  line-height: 1;
  white-space: nowrap;
  font-size: 0.8rem;
  font-weight: 600;
}

/* ── 다가오는 마감일 섹션 ───────────────────────────── */
.upcoming-section {
  margin-bottom: 2rem;
}

.section-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.upcoming-list {
  display: grid;
  gap: .75rem;
}

.date-divider {
  height: 1px;
  background: var(--border);
  margin: 1rem 0;
  opacity: 0.6;
}

.upcoming-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  box-shadow: var(--shadow);
  transition: all var(--transition);
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  border-left: 4px solid var(--card-color, var(--primary));
}

.upcoming-card:last-child {
  border-bottom: none;
}

.upcoming-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.upcoming-date {
  flex-shrink: 0;
  text-align: center;
  min-width: 56px;
}

.upcoming-date .day {
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1;
  color: var(--card-color, var(--primary));
}

.upcoming-date .month {
  font-size: .7rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
}

.upcoming-date .dday {
  font-size: .7rem;
  font-weight: 700;
  margin-top: .25rem;
  padding: .1rem .4rem;
  border-radius: 50px;
  display: inline-block;
}

.dday-urgent {
  background: #FEE2E2;
  color: #DC2626;
}

.dday-soon {
  background: #FEF3C7;
  color: #D97706;
}

.dday-normal {
  background: #E0E7FF;
  color: #4338CA;
}

.dday-past {
  background: #F1F5F9;
  color: #94A3B8;
}

.upcoming-info {
  flex: 1;
  min-width: 0;
}

.upcoming-info .title {
  font-weight: 600;
  font-size: .9rem;
  margin-bottom: .25rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.upcoming-info .meta {
  display: flex;
  gap: .75rem;
  font-size: .75rem;
  color: var(--text-muted);
}

.upcoming-info .badge {
  padding: .15rem .5rem;
  border-radius: 50px;
  font-size: .7rem;
  font-weight: 600;
  background: #F1F5F9;
  color: var(--text-muted);
}

.placeholder {
  text-align: center;
  color: var(--text-muted);
  padding: 2rem;
}

/* ── 모달 ──────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.4);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1001;
  padding: 1rem;
}

.modal {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 2rem;
  max-width: 480px;
  width: 100%;
  box-shadow: var(--shadow-lg);
  position: relative;
  animation: modalIn .25s ease-out;
}

@keyframes modalIn {
  from { opacity: 0; transform: scale(.95) translateY(10px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-close {
  position: absolute;
  top: .75rem;
  right: .75rem;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-muted);
  cursor: pointer;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: all var(--transition);
}
.modal-close:hover { background: #F1F5F9; color: var(--text); }

.modal-badge {
  display: inline-block;
  padding: .2rem .6rem;
  border-radius: 50px;
  font-size: .75rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: .75rem;
}

.modal-title {
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 1.25rem;
}

.modal-meta {
  display: grid;
  gap: .6rem;
  margin-bottom: 1.5rem;
}

.meta-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: .5rem .75rem;
  background: #F8FAFC;
  border-radius: var(--radius-sm);
}

.meta-label {
  font-size: .8rem;
  color: var(--text-muted);
}

.meta-value {
  font-size: .85rem;
  font-weight: 600;
}

.modal-btn {
  width: 100%;
  justify-content: center;
  padding: .75rem;
  font-size: .9rem;
}

/* ── 로딩 오버레이 ─────────────────────────────────── */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(2px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 3000;
}

.loading-spinner {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--border);
  border-top: 3px solid var(--primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

.loading-text {
  font-size: 0.9rem;
  color: var(--text);
  font-weight: 500;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* ── 토스트 ────────────────────────────────────────── */
.toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  background: var(--text);
  color: #fff;
  padding: .75rem 1.5rem;
  border-radius: 50px;
  font-size: .85rem;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  z-index: 2000;
  animation: toastIn .3s ease-out;
}

@keyframes toastIn {
  from { opacity: 0; transform: translate(-50%, 10px); }
  to { opacity: 1; transform: translate(-50%, 0); }
}

/* ── 반응형 ────────────────────────────────────────── */
@media (max-width: 768px) {
  .header-inner { flex-direction: column; align-items: flex-start; }
  .header-right { width: 100%; }
  .header-right .btn { flex: 1; justify-content: center; }
  .filter-bar { flex-direction: column; align-items: flex-start; }
  .calendar-container { padding: .75rem; }
  .fc .fc-toolbar { flex-direction: column; gap: .5rem; }
  .fc .fc-toolbar-title { font-size: 1rem !important; }
  .upcoming-card { flex-direction: column; gap: 1rem; align-items: flex-start; }
  .upcoming-date { align-self: flex-start; margin-left: 0; text-align: left; }
  .main { padding: 1rem; }
}