/* ============================================================
   BLOCK BLAST — TETR.IO 톤 디자인 시스템
   ============================================================ */

:root {
  --bg:           #12101c;
  --bg-dark:      #0a0712;
  --panel:        #1c1626;
  --panel-hi:     #2d2540;
  --panel-border: #37304b;
  --accent:       #9b6ef0;
  --accent-dim:   #6e50af;
  --success:      #6ee682;
  --warning:      #ffaf3c;
  --danger:       #ff5a6e;
  --text:         #f5f0ff;
  --text-dim:     #afa5c8;
  --text-mute:    #6e648c;

  /* 모드별 카드 색 */
  --c-multi-bg:    #5a283c;
  --c-multi-fg:    #ff5a91;
  --c-solo-bg:     #372d5f;
  --c-solo-fg:     #b9aaff;
  --c-profile-bg:  #324158;
  --c-profile-fg:  #aac3ff;
  --c-ranked-bg:   #6e1c28;
  --c-ranked-fg:   #ff6482;
  --c-settings-bg: #283c50;
  --c-settings-fg: #8cc8e6;
  --c-logout-bg:   #2d2832;
  --c-logout-fg:   #aaa5b4;
}

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

html, body {
  width: 100%;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo",
               "Segoe UI", "Malgun Gothic", "Noto Sans KR", sans-serif;
  font-weight: 600;
  letter-spacing: 0.02em;
  overflow: hidden;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

#game {
  display: block;
  width: 100%;
  height: 100%;
  /* 모바일 — 터치를 브라우저 스크롤/제스처로 안 뺏기게 (드래그 필수) */
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
}

/* ─ 친구 버튼 (모바일엔 Tab 키가 없음) ─ */
.friends-fab {
  position: fixed;
  top: 74px;
  right: 12px;
  z-index: 40;
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 20px;
  color: var(--text-dim);
  font-family: inherit;
  font-size: 12px;
  font-weight: 800;
  padding: 8px 14px;
  cursor: pointer;
}
.friends-fab:active { background: var(--panel-hi, #3a3154); }

/* ─ 오버레이 (친구창 등) ─ */
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(10, 7, 18, 0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 150;   /* 방 화면의 HTML input(옵션/채팅)보다 위 */
  padding: 16px;
}

.overlay.hidden {
  display: none;
  pointer-events: none;
}

/* ─ 토스트 ─ */
.toast {
  position: fixed;
  top: 80px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--panel);
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 12px 24px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 700;
  z-index: 300;   /* 항상 최상위 (모달/오버레이 위) */
  animation: toastFade 2.5s forwards;
}

.toast.hidden {
  display: none;
}

@keyframes toastFade {
  0%   { opacity: 0; transform: translateX(-50%) translateY(-10px); }
  10%  { opacity: 1; transform: translateX(-50%) translateY(0); }
  85%  { opacity: 1; }
  100% { opacity: 0; transform: translateX(-50%) translateY(-10px); }
}

/* ─ 버전 우하단 ─ */
.version-corner {
  position: fixed;
  right: 10px;
  bottom: 8px;
  color: var(--text-mute);
  font-size: 12px;
  font-weight: 500;
  pointer-events: none;
}

/* ─ 로그인 / 회원가입 모달 ─ */
.auth-modal {
  position: fixed;
  inset: 0;
  background: rgba(10, 7, 18, 0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  padding: 16px;
}

.auth-modal.hidden { display: none; }

.auth-card {
  width: 100%;
  max-width: 380px;
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 12px;
  padding: 28px 24px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.6);
}

.auth-card h1 {
  font-size: 28px;
  font-weight: 800;
  color: var(--accent);
  text-align: center;
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}

.auth-card .auth-sub {
  text-align: center;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-mute);
  margin-bottom: 22px;
}

.auth-card .tabs {
  display: flex;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--panel-border);
}

.auth-card .tab {
  flex: 1;
  padding: 10px 0;
  text-align: center;
  font-size: 13px;
  font-weight: 700;
  color: var(--text-mute);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: color .15s, border-color .15s;
}

.auth-card .tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.auth-card label {
  display: block;
  font-size: 11px;
  font-weight: 700;
  color: var(--text-dim);
  letter-spacing: 0.08em;
  margin: 14px 0 6px;
}

.auth-card input {
  width: 100%;
  background: var(--bg-dark);
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  padding: 10px 12px;
  color: var(--text);
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  outline: none;
  transition: border-color .15s;
}

.auth-card input:focus {
  border-color: var(--accent);
}

.auth-card button.primary {
  margin-top: 20px;
  width: 100%;
  background: var(--accent);
  color: #fff;
  border: 0;
  border-radius: 6px;
  padding: 12px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: background .15s;
}

.auth-card button.primary:hover { background: #b08aff; }
.auth-card button.primary:disabled {
  background: var(--panel-hi);
  color: var(--text-mute);
  cursor: not-allowed;
}

.auth-card .err {
  margin-top: 12px;
  color: var(--danger);
  font-size: 12px;
  font-weight: 700;
  min-height: 16px;
  text-align: center;
}

.auth-card .guest-btn {
  margin-top: 12px;
  width: 100%;
  background: transparent;
  color: var(--text-mute);
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  padding: 9px;
  font-family: inherit;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  cursor: pointer;
}

.auth-card .guest-btn:hover { color: var(--text); border-color: var(--text-mute); }

/* ─ 친구 오버레이 ─ */
.friends-panel {
  position: fixed;
  top: 0;
  right: 0;
  width: min(420px, 92vw);
  height: 100vh;
  background: var(--panel);
  border-left: 1px solid var(--panel-border);
  box-shadow: -8px 0 30px rgba(0, 0, 0, 0.5);
  z-index: 150;
  transform: translateX(100%);
  transition: transform .22s ease-out;
  display: flex;
  flex-direction: column;
  pointer-events: none;                /* 닫혀있을 땐 클릭 방해 X */
}
.friends-panel.open {
  transform: translateX(0);
  pointer-events: auto;
}

.friends-panel .fp-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  border-bottom: 1px solid var(--panel-border);
}
.friends-panel .fp-head h2 {
  font-size: 18px;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: 0.08em;
}
.friends-panel .fp-close {
  background: transparent;
  border: 0;
  color: var(--text-mute);
  font-size: 22px;
  font-weight: 800;
  cursor: pointer;
  padding: 0 6px;
}
.friends-panel .fp-close:hover { color: var(--text); }

.friends-panel .fp-add {
  display: flex;
  gap: 8px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--panel-border);
}
.friends-panel .fp-add input {
  flex: 1;
  background: var(--bg-dark);
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  padding: 8px 10px;
  color: var(--text);
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  outline: none;
}
.friends-panel .fp-add input:focus { border-color: var(--accent); }
.friends-panel .fp-add button {
  background: var(--accent);
  color: #fff;
  border: 0;
  border-radius: 6px;
  padding: 0 14px;
  font-family: inherit;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.06em;
  cursor: pointer;
}
.friends-panel .fp-add button:hover { background: #b08aff; }

.friends-panel .fp-body {
  flex: 1;
  overflow-y: auto;
  padding: 12px 20px 20px;
}

.friends-panel .fp-section-title {
  font-size: 10px;
  font-weight: 800;
  color: var(--text-mute);
  letter-spacing: 0.12em;
  margin: 16px 0 8px;
}
.friends-panel .fp-section-title:first-child { margin-top: 4px; }

.friends-panel .fp-empty {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-mute);
  padding: 8px 0;
}

.friends-panel .fp-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  margin-bottom: 6px;
  background: var(--bg-dark);
}
.friends-panel .fp-row .dot {
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--text-mute);
  flex-shrink: 0;
}
.friends-panel .fp-row .dot.online { background: var(--success); box-shadow: 0 0 6px var(--success); }
.friends-panel .fp-row .name {
  flex: 1;
  font-size: 13px;
  font-weight: 700;
  color: var(--text);
}
.friends-panel .fp-row button {
  background: transparent;
  border: 1px solid var(--panel-border);
  color: var(--text-dim);
  border-radius: 5px;
  padding: 5px 9px;
  font-family: inherit;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  cursor: pointer;
}
.friends-panel .fp-row button.accept { color: var(--success); border-color: var(--success); }
.friends-panel .fp-row button.decline { color: var(--danger); border-color: var(--danger); }
.friends-panel .fp-row button.invite { color: var(--accent); border-color: var(--accent); }
.friends-panel .fp-row button:hover { background: var(--panel-hi); }

.friends-panel .fp-toast {
  position: absolute;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  padding: 8px 16px;
  border-radius: 6px;
  opacity: 0;
  transition: opacity .15s;
  pointer-events: none;
}
.friends-panel .fp-toast.show { opacity: 1; }

/* ─ 방 채팅 입력 (Canvas 위에 얹힘) ─ */
.chat-input-wrap {
  position: fixed;
  display: none;
  gap: 6px;
  z-index: 30;
}
.chat-input-wrap .chat-input {
  flex: 1;
  background: var(--bg-dark);
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  padding: 8px 10px;
  color: var(--text);
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  outline: none;
}
.chat-input-wrap .chat-input:focus { border-color: var(--accent); }
.chat-input-wrap .chat-send {
  background: var(--accent);
  color: #fff;
  border: 0;
  border-radius: 6px;
  padding: 0 12px;
  font-family: inherit;
  font-size: 12px;
  font-weight: 800;
  cursor: pointer;
}

/* ─ 방 옵션 값 입력 (카드 위에 얹히는 input) ─ */
.room-input {
  position: fixed;
  height: 30px;
  background: var(--bg-dark);
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  color: var(--text);
  font-family: inherit;
  font-size: 14px;
  font-weight: 800;
  text-align: center;
  outline: none;
  z-index: 20;
  padding: 0 6px;
  transition: border-color .12s;
}
.room-input:focus { border-color: var(--accent); }
.room-input::-webkit-outer-spin-button,
.room-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
.room-input[type=number] { -moz-appearance: textfield; }

/* ─ 방 코드 입력 모달 ─ */
.code-modal {
  position: fixed;
  inset: 0;
  background: rgba(10, 7, 18, 0.86);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 180;
}
.code-modal.hidden { display: none; }
.code-modal .cm-card {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 12px;
  padding: 24px 22px;
  width: min(360px, 92vw);
}
.code-modal h3 {
  color: var(--accent);
  font-size: 18px;
  font-weight: 800;
  margin-bottom: 4px;
  letter-spacing: 0.06em;
}
.code-modal .cm-sub {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-mute);
  margin-bottom: 16px;
}
.code-modal input {
  width: 100%;
  background: var(--bg-dark);
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  padding: 12px;
  color: var(--text);
  font-family: inherit;
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 0.4em;
  text-align: center;
  text-transform: uppercase;
  outline: none;
}
.code-modal input:focus { border-color: var(--accent); }
.code-modal .cm-row {
  display: flex;
  gap: 8px;
  margin-top: 14px;
}
.code-modal button {
  flex: 1;
  border: 0;
  border-radius: 6px;
  padding: 11px;
  font-family: inherit;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.06em;
  cursor: pointer;
}
.code-modal button.primary { background: var(--accent); color: #fff; }
.code-modal button.primary:hover { background: #b08aff; }
.code-modal button.secondary { background: var(--panel-hi); color: var(--text); }

/* ─ 게임 결과 카드 ─ */
.result-card {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 14px;
  padding: 28px 24px;
  width: min(400px, 92vw);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.6);
}
.result-card h2 {
  text-align: center;
  color: var(--accent);
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 0.1em;
  margin-bottom: 18px;
}
.result-champion {
  text-align: center;
  font-size: 16px;
  font-weight: 800;
  color: var(--warning, #ffc456);
  margin: -8px 0 10px;
}
.result-wins {
  text-align: center;
  font-size: 12px;
  font-weight: 700;
  color: var(--text-mute);
  margin-bottom: 14px;
}
.result-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 18px;
}
.result-row {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--bg-dark);
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  padding: 10px 14px;
}
.result-row.first {
  border-color: var(--accent);
  background: rgba(155, 110, 240, 0.12);
}
.result-row .rank {
  width: 20px;
  font-size: 14px;
  font-weight: 800;
  color: var(--text-mute);
}
.result-row.first .rank { color: var(--accent); }
.result-row .name {
  flex: 1;
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
}
.result-row .score {
  font-size: 15px;
  font-weight: 800;
  color: var(--accent);
}
.result-card button.primary {
  width: 100%;
  background: var(--accent);
  color: #fff;
  border: 0;
  border-radius: 8px;
  padding: 12px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.05em;
  cursor: pointer;
}
.result-card button.primary:hover { background: #b08aff; }

.invite-body { margin-bottom: 18px; text-align: center; }
.invite-from { font-size: 15px; font-weight: 700; color: var(--text); margin-bottom: 8px; }
.invite-from b { color: var(--accent); }
.invite-code { font-size: 13px; font-weight: 600; color: var(--text-mute); }
.invite-code b {
  color: var(--text);
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 0.2em;
  margin-left: 6px;
}
.invite-btns { display: flex; gap: 8px; }
.invite-btns button {
  flex: 1;
  border: 0;
  border-radius: 8px;
  padding: 12px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.05em;
  cursor: pointer;
}
.invite-btns .primary { background: var(--accent); color: #fff; }
.invite-btns .primary:hover { background: #b08aff; }
.invite-btns .secondary { background: var(--panel-hi); color: var(--text); }

/* ─ 리더보드 오버레이 ─ */
.lb-card {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 14px;
  padding: 24px 22px;
  width: min(440px, 94vw);
  max-height: 88vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.6);
}
.lb-card h2 {
  text-align: center;
  color: var(--accent);
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.1em;
  margin-bottom: 16px;
}
.lb-tabs {
  display: flex;
  gap: 6px;
  margin-bottom: 14px;
}
.lb-tab {
  flex: 1;
  background: var(--bg-dark);
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  padding: 8px 4px;
  color: var(--text-mute);
  font-family: inherit;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: all .15s;
}
.lb-tab:hover { color: var(--text); border-color: var(--text-mute); }
.lb-tab.active {
  color: var(--accent);
  border-color: var(--accent);
  background: rgba(155, 110, 240, 0.12);
}
.lb-list {
  flex: 1;
  overflow-y: auto;
  max-height: 50vh;
  display: flex;
  flex-direction: column;
  gap: 5px;
  margin-bottom: 16px;
  padding-right: 4px;
}
.lb-row {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--bg-dark);
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  padding: 9px 12px;
}
.lb-row.top1 { border-color: #ffe650; background: rgba(255, 230, 80, 0.08); }
.lb-row.top2 { border-color: #c8c8c8; }
.lb-row.top3 { border-color: #cd7f32; }
.lb-row .rank {
  width: 24px;
  font-size: 13px;
  font-weight: 800;
  color: var(--text-mute);
}
.lb-row.top1 .rank { color: #ffe650; }
.lb-row.top2 .rank { color: #e8e8e8; }
.lb-row.top3 .rank { color: #d8985e; }
.lb-row .name {
  flex: 1;
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
}
.lb-row .score {
  font-size: 15px;
  font-weight: 800;
  color: var(--accent);
}
.lb-card button.primary {
  background: var(--accent);
  color: #fff;
  border: 0;
  border-radius: 8px;
  padding: 12px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.05em;
  cursor: pointer;
}
.lb-card button.primary:hover { background: #b08aff; }

/* ─ 프로필 오버레이 ─ */
.pf-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 16px;
}
.pf-stat {
  background: var(--bg-dark);
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  padding: 10px 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.pf-stat .k {
  font-size: 11px;
  font-weight: 700;
  color: var(--text-mute);
  letter-spacing: 0.05em;
}
.pf-stat .v {
  font-size: 18px;
  font-weight: 800;
  color: var(--accent);
}
.pf-section-title {
  font-size: 11px;
  font-weight: 800;
  color: var(--text-mute);
  letter-spacing: 0.1em;
  margin: 8px 0 8px;
}
.pf-ach-list {
  flex: 1;
  overflow-y: auto;
  max-height: 40vh;
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 14px;
  padding-right: 4px;
}
.pf-ach {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-dark);
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  padding: 8px 12px;
  opacity: 0.55;
}
.pf-ach.ok {
  opacity: 1;
  border-color: var(--accent);
  background: rgba(155, 110, 240, 0.08);
}
.pf-ach-icon {
  width: 24px;
  text-align: center;
  font-size: 16px;
  font-weight: 800;
  color: var(--text-mute);
}
.pf-ach.ok .pf-ach-icon { color: #ffe650; }
.pf-ach-body { flex: 1; }
.pf-ach-title {
  font-size: 13px;
  font-weight: 800;
  color: var(--text);
}
.pf-ach-desc {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-mute);
  margin-top: 2px;
}

/* ─ 설정 슬라이더 ─ */
.cf-row {
  display: grid;
  grid-template-columns: 1fr 2fr auto;
  align-items: center;
  gap: 12px;
  padding: 12px 10px;
  background: var(--bg-dark);
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  margin-bottom: 8px;
}
.cf-label {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-dim);
  letter-spacing: 0.05em;
}
.cf-val {
  font-size: 15px;
  font-weight: 800;
  color: var(--accent);
  min-width: 32px;
  text-align: right;
}
.cf-hint {
  font-size: 11px;
  color: var(--text-mute);
  text-align: center;
  margin: 10px 0 14px;
}

/* Range slider — 브라우저 크로스 스타일 */
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  background: var(--panel-hi);
  border-radius: 3px;
  outline: none;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  background: var(--accent);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 0 6px rgba(155, 110, 240, 0.5);
}
input[type="range"]::-moz-range-thumb {
  width: 16px;
  height: 16px;
  background: var(--accent);
  border: 0;
  border-radius: 50%;
  cursor: pointer;
}