:root {
  --bg-primary: #0f172a;
  --bg-surface: #1e293b;
  --bg-surface-hover: #334155;
  --bg-surface-elevated: #283548;
  --border-color: #334155;
  --border-focus: #38bdf8;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent-color: #38bdf8;
  --accent-hover: #0284c7;

  /* Status Colors */
  --status-open-bg: #064e3b;
  --status-open-text: #6ee7b7;
  --status-closed-bg: #451a03;
  --status-closed-text: #fdba74;
  --status-started-bg: #1e1b4b;
  --status-started-text: #c7d2fe;
  --status-ended-bg: #1f2937;
  --status-ended-text: #9ca3af;

  /* Role Badges */
  --role-tank-bg: #1e3a8a;
  --role-tank-text: #93c5fd;
  --role-healer-bg: #064e3b;
  --role-healer-text: #86efac;
  --role-dealer-bg: #7f1d1d;
  --role-dealer-text: #fca5a5;

  /* My Application Badge */
  --my-app-bg: #581c87;
  --my-app-text: #f0abfc;
  --my-app-border: #a855f7;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans KR", sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
.app-header {
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
  padding: 0.75rem 1.5rem;
  position: sticky;
  top: 0;
  z-index: 40;
}

.header-container {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-title {
  font-size: 1.25rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.live-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.2rem 0.5rem;
  font-size: 0.75rem;
  border-radius: 9999px;
  background-color: rgba(56, 189, 248, 0.1);
  color: var(--accent-color);
  border: 1px solid rgba(56, 189, 248, 0.3);
}

.live-badge .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: #22c55e;
}

.auth-box {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.user-profile {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--border-color);
}

.user-name {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.5rem 0.875rem;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s ease-in-out;
  text-decoration: none;
  color: var(--text-primary);
}

.btn:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 2px;
}

.btn-primary {
  background-color: var(--accent-color);
  color: #0f172a;
}
.btn-primary:hover {
  background-color: var(--accent-hover);
}

.btn-secondary {
  background-color: var(--bg-surface);
  border-color: var(--border-color);
  color: var(--text-primary);
}
.btn-secondary:hover {
  background-color: var(--bg-surface-hover);
}

.btn-danger {
  background-color: #991b1b;
  color: #fee2e2;
}
.btn-danger:hover {
  background-color: #b91c1c;
}

.btn-discord {
  background-color: #5865F2;
  color: #ffffff;
}
.btn-discord:hover {
  background-color: #4752c4;
}

.btn-icon {
  padding: 0.5rem;
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
}
.btn-icon:hover {
  background: var(--bg-surface-hover);
}

.btn-close {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 1.25rem;
  cursor: pointer;
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
}
.btn-close:hover {
  color: var(--text-primary);
  background-color: var(--bg-surface-hover);
}

/* Main Layout */
.app-main {
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
  padding: 1.25rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.calendar-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  background-color: var(--bg-surface);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
}

.nav-controls {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.current-month-label {
  font-size: 1.125rem;
  font-weight: 700;
  margin-left: 0.5rem;
}

.filter-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.filter-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  font-size: 0.875rem;
  color: var(--text-primary);
  user-select: none;
}

.filter-toggle input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--accent-color);
  cursor: pointer;
}

/* Grid Layout */
.layout-container {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 1.25rem;
  align-items: start;
}

@media (max-width: 960px) {
  .layout-container {
    grid-template-columns: 1fr;
  }
}

/* Calendar Section */
.calendar-section {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.calendar-weekdays {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  background-color: rgba(15, 23, 42, 0.6);
  border-bottom: 1px solid var(--border-color);
  text-align: center;
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--text-secondary);
}

.weekday {
  padding: 0.625rem 0.25rem;
}
.weekday.sun { color: #f87171; }
.weekday.sat { color: #60a5fa; }

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  grid-auto-rows: minmax(90px, auto);
}

@media (max-width: 600px) {
  .calendar-grid {
    grid-auto-rows: minmax(70px, auto);
  }
}

.calendar-cell {
  border-right: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  padding: 0.375rem;
  min-height: 85px;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  cursor: pointer;
  background-color: var(--bg-surface);
  transition: background-color 0.15s ease;
  position: relative;
}

.calendar-cell:nth-child(7n) {
  border-right: none;
}

.calendar-cell:hover {
  background-color: var(--bg-surface-hover);
}

.calendar-cell:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: -2px;
  z-index: 10;
}

.calendar-cell.other-month {
  background-color: rgba(15, 23, 42, 0.4);
  color: var(--text-muted);
}

.calendar-cell.today {
  background-color: rgba(56, 189, 248, 0.05);
}

.calendar-cell.today .date-num {
  color: var(--accent-color);
  font-weight: 800;
}

.calendar-cell.selected {
  outline: 2px solid var(--accent-color);
  outline-offset: -2px;
  background-color: rgba(56, 189, 248, 0.12);
}

.cell-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.date-num {
  font-size: 0.8125rem;
  font-weight: 600;
}

.calendar-cell.sun .date-num { color: #f87171; }
.calendar-cell.sat .date-num { color: #60a5fa; }

.cell-raids {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  overflow: hidden;
}

.raid-chip {
  font-size: 0.6875rem;
  padding: 0.125rem 0.25rem;
  border-radius: var(--radius-sm);
  background-color: var(--bg-surface-elevated);
  border-left: 3px solid var(--accent-color);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.25rem;
  line-height: 1.2;
}

.raid-chip.my-applied {
  border-left-color: var(--my-app-border);
  background-color: var(--my-app-bg);
  color: var(--my-app-text);
  font-weight: 700;
}

.raid-chip .chip-time {
  font-weight: 600;
}

.raid-chip .chip-title {
  overflow: hidden;
  text-overflow: ellipsis;
}

.raid-chip .chip-count {
  font-size: 0.625rem;
  color: var(--text-secondary);
}

/* Sidebar / Details */
.detail-sidebar {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  box-shadow: var(--shadow-sm);
}

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.75rem;
}

.sidebar-title {
  font-size: 1rem;
  font-weight: 700;
}

.raid-count-badge {
  background-color: var(--bg-surface-elevated);
  font-size: 0.75rem;
  padding: 0.15rem 0.5rem;
  border-radius: 9999px;
  color: var(--text-secondary);
}

.sidebar-content {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.empty-state {
  text-align: center;
  padding: 2rem 1rem;
  color: var(--text-muted);
  font-size: 0.875rem;
}

/* Raid Card */
.raid-card {
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.875rem;
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  transition: transform 0.15s ease, border-color 0.15s ease;
}

.raid-card:hover {
  border-color: var(--accent-color);
}

.raid-card.my-registered {
  border-color: var(--my-app-border);
  box-shadow: 0 0 0 1px var(--my-app-border);
}

.card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.5rem;
}

.card-title-group {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.card-title {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text-primary);
}

.card-meta {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.badges-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.15rem 0.45rem;
  font-size: 0.6875rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  line-height: 1.2;
}

.badge-open {
  background-color: var(--status-open-bg);
  color: var(--status-open-text);
  border-color: rgba(110, 231, 183, 0.3);
}

.badge-closed {
  background-color: var(--status-closed-bg);
  color: var(--status-closed-text);
  border-color: rgba(253, 186, 116, 0.3);
}

.badge-started {
  background-color: var(--status-started-bg);
  color: var(--status-started-text);
  border-color: rgba(199, 210, 254, 0.3);
}

.badge-ended {
  background-color: var(--status-ended-bg);
  color: var(--status-ended-text);
  border-color: rgba(156, 163, 175, 0.3);
}

.badge-diff {
  background-color: #312e81;
  color: #c7d2fe;
}

.badge-my-app {
  background-color: var(--my-app-bg);
  color: var(--my-app-text);
  border-color: var(--my-app-border);
}

.card-quotas {
  font-size: 0.75rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--bg-surface);
  padding: 0.35rem 0.6rem;
  border-radius: var(--radius-sm);
}

.card-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
}

/* Modal Dialog */
.modal {
  margin: auto;
  border: none;
  background: transparent;
  padding: 1rem;
  max-width: 640px;
  width: calc(100% - 2rem);
  color: var(--text-primary);
}

.modal::backdrop {
  background-color: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(2px);
}

.modal-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  max-height: 85vh;
  overflow: hidden;
}

.modal-header {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.modal-title {
  font-size: 1.125rem;
  font-weight: 700;
  margin-top: 0.25rem;
}

.modal-body {
  padding: 1.25rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.modal-actions {
  padding: 1rem 1.25rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  background-color: rgba(15, 23, 42, 0.4);
}

.section-block {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.section-block-title {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.section-block-content {
  background-color: var(--bg-surface-elevated);
  padding: 0.75rem;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  border: 1px solid var(--border-color);
}

.notice-box {
  background-color: rgba(56, 189, 248, 0.08);
  border-left: 4px solid var(--accent-color);
  color: var(--text-primary);
}

/* Roster Tables */
.roster-list {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-top: 0.25rem;
}

.roster-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.45rem 0.65rem;
  background-color: var(--bg-surface-elevated);
  border-radius: var(--radius-sm);
  font-size: 0.8125rem;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.roster-item.is-me {
  border-color: var(--my-app-border);
  background-color: rgba(168, 85, 247, 0.15);
}

.roster-char {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.badge-role-tank { background: var(--role-tank-bg); color: var(--role-tank-text); }
.badge-role-healer { background: var(--role-healer-bg); color: var(--role-healer-text); }
.badge-role-dealer { background: var(--role-dealer-bg); color: var(--role-dealer-text); }

/* Form Controls */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-select, .form-input {
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.5rem 0.75rem;
  color: var(--text-primary);
  font-size: 0.875rem;
}

.form-select:focus, .form-input:focus {
  outline: 2px solid var(--border-focus);
  border-color: transparent;
}

.radio-group {
  display: flex;
  gap: 1rem;
}

.radio-label {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.875rem;
  cursor: pointer;
}

/* Toast */
.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  pointer-events: none;
}

.toast {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  font-size: 0.875rem;
  pointer-events: auto;
  transition: opacity 0.2s ease, transform 0.2s ease;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  max-width: 380px;
}

.toast.success { border-left: 4px solid #22c55e; }
.toast.error { border-left: 4px solid #ef4444; }
.toast.info { border-left: 4px solid var(--accent-color); }