/* ── RESET & TOKENS ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0f1117;
  --bg2: #161b27;
  --bg3: #1e2535;
  --border: rgba(255,255,255,0.07);
  --text: #e8eaf0;
  --text-muted: #8b93a8;
  --text-dim: #5a6278;
  --accent: #6c63ff;
  --accent2: #8b84ff;
  --accent-glow: rgba(108,99,255,0.25);
  --green: #22c55e;
  --orange: #f97316;
  --red: #ef4444;
  --teal: #14b8a6;
  --blue: #3b82f6;
  --purple: #a855f7;
  --sidebar-w: 240px;
  --radius: 14px;
  --radius-sm: 8px;
  --transition: 0.18s ease;
  font-size: 17px;
}

body.theme-light {
  --bg: #f3f5f8;
  --bg2: #ffffff;
  --bg3: #e2e8f0;
  --border: rgba(0,0,0,0.08);
  --text: #1e293b;
  --text-muted: #64748b;
  --text-dim: #94a3b8;
  --accent: #5a52d5;
  --accent2: #4338ca;
  --accent-glow: rgba(108,99,255,0.08);
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

body {
  font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  display: flex;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ── SCROLLBAR ── */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--bg3); border-radius: 99px; }

/* ─────────────────────────────────────
   SIDEBAR
───────────────────────────────────── */
.sidebar {
  width: var(--sidebar-w);
  min-height: 100vh;
  background: var(--bg2);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 200;
  transition: transform var(--transition);
}

.sidebar.hidden { transform: translateX(-100%); }

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 24px 20px;
  border-bottom: 1px solid var(--border);
}

.logo-icon { font-size: 32px; }
.logo-title { font-weight: 800; font-size: 1.2rem; color: var(--text); letter-spacing: -0.3px; }
.logo-sub { font-size: 0.85rem; color: var(--text-muted); letter-spacing: 0.5px; }

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 12px;
  flex: 1;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
  text-align: left;
  width: 100%;
}

.nav-item:hover { background: var(--bg3); color: var(--text); }
.nav-item.active { background: var(--accent-glow); color: var(--accent2); font-weight: 600; }
.nav-icon { font-size: 1.2rem; }

.sidebar-footer {
  padding: 16px;
  border-top: 1px solid var(--border);
}

.next-meeting-badge {
  background: linear-gradient(135deg, #1e1b4b, #2e1065);
  border: 1px solid rgba(108,99,255,0.3);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  text-align: center;
}

.badge-label { font-size: 0.72rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.8px; }
.badge-countdown { font-size: 1.3rem; font-weight: 800; color: var(--accent2); margin-top: 4px; }

/* ─────────────────────────────────────
   MAIN
───────────────────────────────────── */
.main {
  margin-left: var(--sidebar-w);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  transition: margin var(--transition);
}

.main.full { margin-left: 0; }

/* ── TOPBAR ── */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 28px;
  height: 64px;
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
}

.topbar-left { display: flex; align-items: center; gap: 14px; }
.topbar-right { display: flex; align-items: center; gap: 12px; }

.page-title { font-size: 1.15rem; font-weight: 700; }

.sidebar-toggle {
  background: none; border: none; color: var(--text-muted);
  font-size: 1.3rem; cursor: pointer; line-height: 1;
  padding: 4px;
}

.today-badge {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 5px 12px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ─────────────────────────────────────
   VIEWS
───────────────────────────────────── */
.view {
  display: none;
  padding: 28px;
  flex: 1;
  animation: fadeIn 0.2s ease;
}

.view.active { display: block; }

@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

/* ── STAT CARDS ── */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  border-radius: var(--radius);
  padding: 20px 22px;
  border: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: -30px; right: -30px;
  width: 90px; height: 90px;
  border-radius: 50%;
  opacity: 0.12;
}

.card-blue { background: linear-gradient(135deg, #1e3a5f, #0f1f3a); }
.card-blue::before { background: var(--blue); }
.card-purple { background: linear-gradient(135deg, #3b1a5c, #1c0d30); }
.card-purple::before { background: var(--purple); }
.card-green { background: linear-gradient(135deg, #0f3a23, #072014); }
.card-green::before { background: var(--green); }
.card-orange { background: linear-gradient(135deg, #3a1f0a, #200f00); }
.card-orange::before { background: var(--orange); }

.stat-label { font-size: 0.78rem; color: rgba(255,255,255,0.75); text-transform: uppercase; letter-spacing: 0.6px; margin-bottom: 8px; }
.stat-value { font-size: 2.2rem; font-weight: 800; line-height: 1; color: #fff; }
.stat-sub { font-size: 0.78rem; color: rgba(255,255,255,0.6); margin-top: 4px; }

/* ── DASHBOARD GRID ── */
.dashboard-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

/* ─────────────────────────────────────
   PANELS
───────────────────────────────────── */
.panel {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.full-panel { width: 100%; }

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  border-bottom: 1px solid var(--border);
}

.panel-title { font-size: 0.95rem; font-weight: 700; }

/* ── NEXT SESSION PANEL ── */
.next-session-content { padding: 20px 22px; }

.session-hero {
  background: linear-gradient(135deg, var(--accent-glow), transparent);
  border: 1px solid rgba(108,99,255,0.2);
  border-radius: var(--radius-sm);
  padding: 18px 20px;
}

.session-hero-date { font-size: 0.85rem; color: var(--accent2); font-weight: 600; margin-bottom: 8px; letter-spacing: 0.5px; }
.session-hero-topic { font-size: 1.25rem; font-weight: 800; margin-bottom: 12px; }
.session-hero-question { font-size: 0.9rem; color: var(--text-muted); line-height: 1.6; margin-bottom: 14px; }
.session-hero-mission {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  background: rgba(255,255,255,0.04);
  border-radius: 6px;
  padding: 12px 14px;
  font-size: 0.88rem;
  color: var(--text);
}

.session-list { padding: 12px 10px; display: flex; flex-direction: column; gap: 4px; max-height: 280px; overflow-y: auto; }

.session-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--transition);
}

.session-item:hover { background: var(--bg3); }
.session-week-badge {
  width: 32px; height: 32px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 8px;
  font-size: 0.72rem;
  font-weight: 700;
  flex-shrink: 0;
}

.session-item-info { flex: 1; min-width: 0; }
.session-item-topic { font-size: 0.88rem; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.session-item-date { font-size: 0.75rem; color: var(--text-muted); margin-top: 2px; }
.status-badge {
  font-size: 0.7rem; font-weight: 600; padding: 3px 8px;
  border-radius: 99px; white-space: nowrap;
}
.status-done { background: rgba(34,197,94,0.15); color: var(--green); }
.status-upcoming { background: rgba(108,99,255,0.15); color: var(--accent2); }

/* UPCOMING */
.upcoming-list { padding: 12px 22px; display: flex; flex-direction: column; gap: 10px; }

.upcoming-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}

.upcoming-item:last-child { border-bottom: none; }
.upcoming-date-box {
  width: 44px; height: 44px;
  background: var(--bg3);
  border-radius: 10px;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  flex-shrink: 0;
  font-weight: 700;
}
.upcoming-day { font-size: 1.1rem; line-height: 1; }
.upcoming-mon { font-size: 0.65rem; color: var(--text-muted); }
.upcoming-info { flex: 1; }
.upcoming-topic { font-size: 0.88rem; font-weight: 600; }
.upcoming-week { font-size: 0.75rem; color: var(--text-muted); margin-top: 2px; }

/* TOOLS */
.tools-panel .panel-header { padding: 18px 22px; }
.tools-grid { display: flex; flex-wrap: wrap; gap: 8px; padding: 16px 22px 20px; }
.tool-chip {
  padding: 6px 14px;
  border-radius: 99px;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform var(--transition);
}
.tool-chip:hover { transform: scale(1.05); }
.tool-chip[data-color="blue"] { background: rgba(59,130,246,0.15); color: var(--blue); border: 1px solid rgba(59,130,246,0.3); }
.tool-chip[data-color="green"] { background: rgba(34,197,94,0.15); color: var(--green); border: 1px solid rgba(34,197,94,0.3); }
.tool-chip[data-color="orange"] { background: rgba(249,115,22,0.15); color: var(--orange); border: 1px solid rgba(249,115,22,0.3); }
.tool-chip[data-color="purple"] { background: rgba(168,85,247,0.15); color: var(--purple); border: 1px solid rgba(168,85,247,0.3); }
.tool-chip[data-color="red"] { background: rgba(239,68,68,0.15); color: var(--red); border: 1px solid rgba(239,68,68,0.3); }
.tool-chip[data-color="teal"] { background: rgba(20,184,166,0.15); color: var(--teal); border: 1px solid rgba(20,184,166,0.3); }

/* ─────────────────────────────────────
   CALENDAR
───────────────────────────────────── */
.cal-nav { display: flex; align-items: center; gap: 14px; }
.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 0;
}
.cal-header-cell {
  padding: 10px 0;
  text-align: center;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--border);
}
.cal-header-cell.fri { color: var(--accent2); }
.cal-body {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(7, 1fr);
}
.cal-cell {
  min-height: 90px;
  padding: 8px;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: background var(--transition);
  position: relative;
}
.cal-cell:nth-child(7n) { border-right: none; }
.cal-cell:hover { background: var(--bg3); }
.cal-cell.other-month .cal-day { color: var(--text-dim); }
.cal-cell.today { background: rgba(108,99,255,0.06); }
.cal-cell.today .cal-day {
  background: var(--accent);
  color: #fff;
  width: 24px; height: 24px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  font-weight: 700;
}
.cal-cell.is-friday { background: rgba(108,99,255,0.03); }
.cal-day { font-size: 0.95rem; color: var(--text-muted); font-weight: 600; width: 24px; height: 24px; display: flex; align-items: center; justify-content: center; margin-bottom: 3px; }
.cal-event {
  background: var(--accent-glow);
  border: 1px solid rgba(108,99,255,0.3);
  border-radius: 5px;
  padding: 6px 8px;
  font-size: 0.9rem;
  margin-top: 4px;
  line-height: 1.3;
  word-break: keep-all;
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.cal-event-time {
  font-size: 0.9em;
  color: var(--accent2);
  font-weight: bold;
}
.cal-event-title {
  color: var(--text);
  font-weight: 700;
  font-size: 1.1em;
}
.cal-event-desc {
  font-size: 0.85em;
  color: var(--text-muted);
}
.cal-event.done {
  background: rgba(34,197,94,0.1);
  border-color: rgba(34,197,94,0.3);
  color: var(--green);
}

/* ─────────────────────────────────────
   SESSIONS TABLE
───────────────────────────────────── */
.filter-row { display: flex; gap: 10px; }
.sessions-table-wrapper { overflow-x: auto; }
.sessions-table { width: 100%; border-collapse: collapse; }
.sessions-table th {
  padding: 12px 16px;
  text-align: left;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--border);
}
.sessions-table td {
  padding: 13px 16px;
  font-size: 0.875rem;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
.sessions-table tr:last-child td { border-bottom: none; }
.sessions-table tr:hover td { background: rgba(255,255,255,0.02); }

.block-badge {
  padding: 3px 10px;
  border-radius: 99px;
  font-size: 0.72rem;
  font-weight: 700;
}
.block-1 { background: rgba(59,130,246,0.15); color: var(--blue); }
.block-2 { background: rgba(168,85,247,0.15); color: var(--purple); }
.block-3 { background: rgba(34,197,94,0.15); color: var(--green); }
.block-4 { background: rgba(249,115,22,0.15); color: var(--orange); }

/* ─────────────────────────────────────
   MEMBERS
───────────────────────────────────── */
.members-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
  padding: 22px;
}

.member-card {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  cursor: pointer;
  transition: border-color var(--transition), transform var(--transition);
}
.member-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.member-avatar { font-size: 2.4rem; margin-bottom: 10px; }
.member-name { font-size: 0.95rem; font-weight: 700; margin-bottom: 4px; }
.member-industry { font-size: 0.78rem; color: var(--accent2); margin-bottom: 6px; }
.member-product { font-size: 0.75rem; color: var(--text-muted); }
.member-joined { font-size: 0.7rem; color: var(--text-dim); margin-top: 8px; }
.member-actions { display: flex; gap: 6px; justify-content: center; margin-top: 12px; }

/* ─────────────────────────────────────
   ANNOUNCE
───────────────────────────────────── */
.announce-layout { display: grid; grid-template-columns: 1fr 340px; gap: 20px; }
.announce-form { padding: 20px 22px; display: flex; flex-direction: column; gap: 14px; }

.channel-chips { display: flex; gap: 10px; }
.chip-check {
  display: flex; align-items: center; gap: 6px;
  font-size: 0.85rem; cursor: pointer;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 6px 12px;
}
.chip-check input { accent-color: var(--accent); }

.announce-preview {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px;
  font-size: 0.85rem;
  line-height: 1.8;
  white-space: pre-wrap;
  color: var(--text);
  min-height: 160px;
  font-family: inherit;
}

.template-panel .panel-header { padding: 18px 22px; }
.template-list { display: flex; flex-direction: column; gap: 8px; padding: 16px 22px; }
.template-btn {
  padding: 10px 14px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  text-align: left;
  transition: background var(--transition), border-color var(--transition);
}
.template-btn:hover { background: var(--accent-glow); border-color: var(--accent); color: var(--accent2); }
.template-preview {
  padding: 14px 22px 20px;
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.7;
  white-space: pre-wrap;
}

/* ─────────────────────────────────────
   FORM ELEMENTS
───────────────────────────────────── */
.field-label { font-size: 0.8rem; color: var(--text-muted); font-weight: 600; letter-spacing: 0.3px; }
.input-field, .select-field {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 0.875rem;
  outline: none;
  transition: border-color var(--transition);
  font-family: inherit;
}
.input-field:focus, .select-field:focus { border-color: var(--accent); }
.select-field { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%238b93a8'%3E%3Cpath d='M5.23 7.21a.75.75 0 011.06.02L10 11.168l3.71-3.938a.75.75 0 111.08 1.04l-4.25 4.5a.75.75 0 01-1.08 0l-4.25-4.5a.75.75 0 01.02-1.06z'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 10px center; background-size: 18px; padding-right: 36px; }
.textarea-field { resize: vertical; min-height: 90px; }

/* ─────────────────────────────────────
   BUTTONS
───────────────────────────────────── */
.btn-primary {
  padding: 9px 18px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity var(--transition), transform var(--transition);
  white-space: nowrap;
  font-family: inherit;
}
.btn-primary:hover { opacity: 0.88; transform: translateY(-1px); }
.btn-full { width: 100%; justify-content: center; }
.btn-ghost {
  padding: 7px 14px;
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.835rem;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
  font-family: inherit;
}
.btn-ghost:hover { background: var(--bg3); color: var(--text); }
.btn-danger { background: rgba(239,68,68,0.15); color: var(--red); border-color: rgba(239,68,68,0.3); }
.btn-sm { padding: 4px 10px; font-size: 0.78rem; }

/* ─────────────────────────────────────
   MODAL
───────────────────────────────────── */
.modal-overlay {
  position: fixed; inset: 0; z-index: 500;
  background: rgba(0,0,0,0.65);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center; justify-content: center;
  padding: 20px;
  animation: fadeIn 0.15s ease;
}

.modal {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 24px 60px rgba(0,0,0,0.5);
}

.modal-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
}
.modal-title { font-size: 1.05rem; font-weight: 700; }
.modal-close { background: none; border: none; color: var(--text-muted); font-size: 1.2rem; cursor: pointer; }
.modal-body { padding: 20px 24px; display: flex; flex-direction: column; gap: 14px; }
.modal-footer {
  display: flex; justify-content: flex-end; gap: 10px;
  padding: 16px 24px;
  border-top: 1px solid var(--border);
}

/* EMOJI PICKER */
.emoji-picker { display: flex; gap: 8px; flex-wrap: wrap; }
.emoji-opt {
  font-size: 1.6rem; cursor: pointer;
  padding: 6px 8px;
  border-radius: 8px;
  border: 2px solid transparent;
  transition: border-color var(--transition);
}
.emoji-opt.selected { border-color: var(--accent); background: var(--accent-glow); }
.emoji-opt:hover { border-color: var(--border); }

/* ── TOAST ── */
.toast {
  position: fixed;
  bottom: 28px; right: 28px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 20px;
  font-size: 0.875rem;
  font-weight: 500;
  z-index: 999;
  transform: translateY(20px);
  opacity: 0;
  transition: transform 0.25s ease, opacity 0.25s ease;
  pointer-events: none;
}
.toast.show { transform: translateY(0); opacity: 1; }

/* ── MISC ── */
.no-data { padding: 20px 22px; color: var(--text-dim); font-size: 0.875rem; text-align: center; }

/* ─────────────────────────────────────
   RESPONSIVE
───────────────────────────────────── */
@media (max-width: 900px) {
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .dashboard-grid { grid-template-columns: 1fr; }
  .announce-layout { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  :root { --sidebar-w: 0px; }
  .sidebar { width: 240px; transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); box-shadow: 0 0 40px rgba(0,0,0,0.5); }
  .main { margin-left: 0; }
  .view { padding: 16px; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .topbar { padding: 0 16px; }
}