/* ===== 기본 리셋 & 변수 ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --primary:     #2ecc71;
  --primary-d:   #27ae60;
  --primary-l:   #d5f5e3;
  --accent:      #f39c12;
  --accent-d:    #d68910;
  --danger:      #e74c3c;
  --info:        #3498db;
  --dark:        #1a1a2e;
  --dark2:       #16213e;
  --dark3:       #0f3460;
  --text-main:   #f0f0f0;
  --text-sub:    #a0aec0;
  --card-bg:     rgba(255,255,255,0.05);
  --card-border: rgba(255,255,255,0.10);
  --radius:      16px;
  --radius-sm:   10px;
  --shadow:      0 8px 32px rgba(0,0,0,0.3);
  --transition:  0.25s ease;
}

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: 'Pretendard', 'Apple SD Gothic Neo', sans-serif;
  background: linear-gradient(135deg, var(--dark) 0%, var(--dark2) 50%, var(--dark3) 100%);
  min-height: 100vh;
  color: var(--text-main);
  overflow-x: hidden;
}

/* ===== 배경 파티클 ===== */
.bg-particles {
  position: fixed;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}
.bg-particles span {
  position: absolute;
  display: block;
  width: 20px; height: 20px;
  background: rgba(46,204,113,0.08);
  border-radius: 50%;
  animation: float 15s infinite linear;
}
.bg-particles span:nth-child(1)  { width:80px;  height:80px;  left:10%;  animation-delay:0s;   animation-duration:20s; }
.bg-particles span:nth-child(2)  { width:30px;  height:30px;  left:25%;  animation-delay:3s;   animation-duration:15s; }
.bg-particles span:nth-child(3)  { width:60px;  height:60px;  left:45%;  animation-delay:6s;   animation-duration:18s; }
.bg-particles span:nth-child(4)  { width:20px;  height:20px;  left:65%;  animation-delay:1s;   animation-duration:12s; }
.bg-particles span:nth-child(5)  { width:50px;  height:50px;  left:80%;  animation-delay:4s;   animation-duration:22s; }
.bg-particles span:nth-child(6)  { width:35px;  height:35px;  left:5%;   animation-delay:7s;   animation-duration:16s; }
.bg-particles span:nth-child(7)  { width:70px;  height:70px;  left:35%;  animation-delay:2s;   animation-duration:25s; }
.bg-particles span:nth-child(8)  { width:25px;  height:25px;  left:55%;  animation-delay:9s;   animation-duration:14s; }
.bg-particles span:nth-child(9)  { width:45px;  height:45px;  left:70%;  animation-delay:5s;   animation-duration:19s; }
.bg-particles span:nth-child(10) { width:15px;  height:15px;  left:90%;  animation-delay:8s;   animation-duration:17s; }

@keyframes float {
  0%   { transform: translateY(110vh) rotate(0deg);   opacity:0; }
  10%  { opacity: 1; }
  90%  { opacity: 0.5; }
  100% { transform: translateY(-10vh) rotate(720deg); opacity:0; }
}

/* ===== 앱 래퍼 ===== */
.app-wrapper {
  position: relative;
  z-index: 1;
  max-width: 540px;
  margin: 0 auto;
  padding: 24px 16px 40px;
}

/* ===== 헤더 ===== */
.app-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 28px;
  padding: 20px 22px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  backdrop-filter: blur(12px);
}
.header-icon {
  width: 52px; height: 52px;
  background: linear-gradient(135deg, var(--primary), var(--primary-d));
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 22px;
  color: #fff;
  flex-shrink: 0;
  box-shadow: 0 4px 16px rgba(46,204,113,0.35);
}
.header-text { flex: 1; }
.header-text h1 { font-size: 1.1rem; font-weight: 700; line-height: 1.3; }
.header-text p  { font-size: 0.78rem; color: var(--primary); margin-top: 3px; font-weight: 500; }
.settings-btn {
  width: 38px; height: 38px;
  background: rgba(255,255,255,0.08);
  border: 1px solid var(--card-border);
  border-radius: 10px;
  color: var(--text-sub);
  font-size: 16px;
  cursor: pointer;
  transition: var(--transition);
  display: flex; align-items: center; justify-content: center;
}
.settings-btn:hover { background: rgba(255,255,255,0.15); color: #fff; transform: rotate(45deg); }

/* ===== 상태 배너 ===== */
.status-banner {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  background: rgba(52,152,219,0.15);
  border: 1px solid rgba(52,152,219,0.3);
  margin-bottom: 18px;
  transition: var(--transition);
}
.status-banner.open    { background: rgba(46,204,113,0.15); border-color: rgba(46,204,113,0.35); }
.status-banner.waiting { background: rgba(243,156,18,0.15);  border-color: rgba(243,156,18,0.35); }
.status-icon-wrap { font-size: 20px; color: var(--info); transition: var(--transition); }
.status-banner.open    .status-icon-wrap { color: var(--primary); }
.status-banner.waiting .status-icon-wrap { color: var(--accent); }
.status-text { flex: 1; }
.status-label { display: block; font-weight: 700; font-size: 0.95rem; }
.status-desc  { display: block; font-size: 0.78rem; color: var(--text-sub); margin-top: 2px; }
.status-badge {
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.72rem;
  font-weight: 700;
  background: rgba(52,152,219,0.25);
  color: var(--info);
  letter-spacing: 0.5px;
  transition: var(--transition);
}
.status-banner.open    .status-badge { background: rgba(46,204,113,0.25); color: var(--primary); }
.status-banner.waiting .status-badge { background: rgba(243,156,18,0.25);  color: var(--accent); }

/* ===== 카드 공통 ===== */
.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 22px;
  margin-bottom: 18px;
  backdrop-filter: blur(12px);
  transition: var(--transition);
}
.card:hover { border-color: rgba(255,255,255,0.18); }
.card-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  font-size: 1.0rem;
  font-weight: 700;
}
.card-header i { color: var(--primary); font-size: 1.1rem; }
.card-header h2 { flex: 1; font-size: 1.0rem; }

/* ===== 카운트다운 ===== */
.countdown-card { text-align: center; }
.countdown-grid {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-bottom: 16px;
}
.countdown-unit {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}
.countdown-num {
  font-size: 2.8rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), #00d2ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  min-width: 72px;
  line-height: 1;
  letter-spacing: -1px;
  text-align: center;
  transition: all 0.3s ease;
}
.countdown-num.pop {
  transform: scale(1.2);
}
.countdown-label {
  font-size: 0.72rem;
  color: var(--text-sub);
  font-weight: 500;
  letter-spacing: 1px;
  text-transform: uppercase;
}
.countdown-sep {
  font-size: 2.0rem;
  font-weight: 800;
  color: var(--primary);
  opacity: 0.5;
  padding-bottom: 18px;
}
.open-info {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 18px;
  background: rgba(46,204,113,0.1);
  border: 1px solid rgba(46,204,113,0.2);
  border-radius: 30px;
  font-size: 0.82rem;
  color: var(--primary);
  font-weight: 500;
}

/* 오픈 시 카운트다운 숨기고 강조 */
.countdown-card.is-open .countdown-grid { display: none; }
.countdown-card.is-open .card-header h2 { color: var(--primary); }
.open-now-msg {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--primary);
  animation: pulse 1s infinite;
  padding: 12px 0;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.75; transform: scale(0.97); }
}

/* ===== 예약 정보 ===== */
.info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.info-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px;
  background: rgba(255,255,255,0.04);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255,255,255,0.06);
}
.info-icon {
  width: 34px; height: 34px;
  background: rgba(46,204,113,0.12);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.9rem;
  color: var(--primary);
  flex-shrink: 0;
}
.info-detail { display: flex; flex-direction: column; gap: 2px; overflow: hidden; }
.info-key { font-size: 0.7rem; color: var(--text-sub); font-weight: 500; }
.info-val { font-size: 0.82rem; font-weight: 700; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* ===== 액션 버튼 ===== */
.action-section {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 18px;
}
.btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  text-decoration: none;
  width: 100%;
  font-family: inherit;
}
.btn-notify {
  background: rgba(243,156,18,0.12);
  border: 1.5px solid rgba(243,156,18,0.35);
  color: var(--accent);
}
.btn-notify:hover { background: rgba(243,156,18,0.25); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(243,156,18,0.25); }
.btn-notify.active { background: rgba(243,156,18,0.25); border-color: var(--accent); }

.btn-reserve {
  background: linear-gradient(135deg, var(--primary), var(--primary-d));
  color: #fff;
  box-shadow: 0 4px 20px rgba(46,204,113,0.35);
}
.btn-reserve:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(46,204,113,0.45); }
.btn-reserve:active { transform: translateY(0); }

/* ===== 자동 실행 카드 ===== */
.auto-desc {
  font-size: 0.82rem;
  color: var(--text-sub);
  line-height: 1.6;
  margin-bottom: 14px;
}
.auto-desc strong { color: var(--text-main); }
.auto-status {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 0.8rem;
  font-weight: 600;
  background: rgba(255,255,255,0.05);
  color: var(--text-sub);
  transition: var(--transition);
}
.auto-status.active { background: rgba(46,204,113,0.15); color: var(--primary); }

/* 토글 스위치 */
.toggle-wrap { display: flex; align-items: center; cursor: pointer; }
.toggle-wrap input { display: none; }
.toggle {
  position: relative;
  width: 48px; height: 26px;
  background: rgba(255,255,255,0.1);
  border-radius: 13px;
  transition: var(--transition);
  border: 1px solid rgba(255,255,255,0.15);
}
.toggle::after {
  content: '';
  position: absolute;
  top: 3px; left: 3px;
  width: 18px; height: 18px;
  background: #fff;
  border-radius: 50%;
  transition: var(--transition);
}
.toggle-wrap input:checked + .toggle { background: var(--primary); border-color: var(--primary); }
.toggle-wrap input:checked + .toggle::after { transform: translateX(22px); }

/* ===== 이력 카드 ===== */
.clear-btn {
  width: 30px; height: 30px;
  background: transparent;
  border: none;
  color: var(--text-sub);
  cursor: pointer;
  border-radius: 6px;
  font-size: 13px;
  display: flex; align-items: center; justify-content: center;
  transition: var(--transition);
}
.clear-btn:hover { color: var(--danger); background: rgba(231,76,60,0.1); }

.history-list { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.history-empty { font-size: 0.82rem; color: var(--text-sub); text-align: center; padding: 16px 0; }
.history-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: rgba(255,255,255,0.04);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--primary);
  font-size: 0.82rem;
}
.history-item .h-time { color: var(--text-sub); font-size: 0.72rem; flex-shrink: 0; }
.history-item .h-text { flex: 1; }
.history-item.fail { border-left-color: var(--danger); }
.history-item.info { border-left-color: var(--info); }

/* ===== 푸터 ===== */
.app-footer {
  text-align: center;
  margin-top: 10px;
  padding: 20px;
  font-size: 0.78rem;
  color: var(--text-sub);
  line-height: 1.8;
}
.app-footer a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  margin-top: 6px;
  transition: var(--transition);
}
.app-footer a:hover { opacity: 0.75; }

/* ===== 모달 ===== */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(6px);
  z-index: 1000;
  display: flex; align-items: center; justify-content: center;
  padding: 16px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}
.modal-overlay.show { opacity: 1; pointer-events: all; }
.modal {
  background: #1e2a3a;
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius);
  width: 100%;
  max-width: 420px;
  box-shadow: var(--shadow);
  transform: translateY(20px) scale(0.97);
  transition: transform 0.25s ease;
}
.modal-overlay.show .modal { transform: translateY(0) scale(1); }
.modal-header {
  display: flex; align-items: center; gap: 10px;
  padding: 20px 22px 16px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  font-weight: 700; font-size: 1.05rem;
}
.modal-header i { color: var(--primary); }
.modal-header h3 { flex: 1; font-size: 1.0rem; }
.modal-close {
  width: 30px; height: 30px;
  background: transparent;
  border: none;
  color: var(--text-sub);
  cursor: pointer;
  border-radius: 6px;
  font-size: 15px;
  display: flex; align-items: center; justify-content: center;
  transition: var(--transition);
}
.modal-close:hover { color: #fff; background: rgba(255,255,255,0.1); }
.modal-body { padding: 20px 22px; display: flex; flex-direction: column; gap: 18px; }
.modal-footer { padding: 16px 22px 20px; border-top: 1px solid rgba(255,255,255,0.08); }

.setting-group { display: flex; flex-direction: column; gap: 8px; }
.setting-group label { font-size: 0.82rem; font-weight: 600; color: var(--text-sub); }
.setting-group small { font-size: 0.72rem; color: var(--text-sub); }
.setting-group select {
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  padding: 10px 14px;
  font-size: 0.88rem;
  font-family: inherit;
  cursor: pointer;
  outline: none;
  transition: var(--transition);
}
.setting-group select:focus { border-color: var(--primary); }
.setting-group select option { background: #1e2a3a; }

.court-selector { display: flex; gap: 8px; flex-wrap: wrap; }
.court-btn {
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  border: 1.5px solid rgba(255,255,255,0.15);
  background: transparent;
  color: var(--text-sub);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: var(--transition);
}
.court-btn.active {
  border-color: var(--primary);
  background: rgba(46,204,113,0.15);
  color: var(--primary);
}
.court-btn:hover { border-color: rgba(46,204,113,0.4); }

.btn-save {
  background: linear-gradient(135deg, var(--primary), var(--primary-d));
  color: #fff;
  box-shadow: 0 4px 14px rgba(46,204,113,0.3);
  width: 100%;
  padding: 14px;
}
.btn-save:hover { opacity: 0.9; transform: translateY(-1px); }

/* ===== 토스트 ===== */
.toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: #2d2d2d;
  color: #fff;
  padding: 12px 24px;
  border-radius: 30px;
  font-size: 0.88rem;
  font-weight: 600;
  z-index: 9999;
  opacity: 0;
  transition: all 0.35s ease;
  white-space: nowrap;
  box-shadow: 0 6px 24px rgba(0,0,0,0.4);
  border: 1px solid rgba(255,255,255,0.1);
  pointer-events: none;
}
.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}
.toast.success { background: var(--primary-d); }
.toast.error   { background: var(--danger); }
.toast.info    { background: var(--info); }

/* ===== 서버 시간 동기화 카드 ===== */
.sync-card { border-color: rgba(52,152,219,0.25); }
.sync-card .card-header i { color: var(--info); }

.sync-btn {
  width: 30px; height: 30px;
  background: rgba(52,152,219,0.12);
  border: 1px solid rgba(52,152,219,0.3);
  border-radius: 8px;
  color: var(--info);
  cursor: pointer;
  font-size: 13px;
  display: flex; align-items: center; justify-content: center;
  transition: var(--transition);
}
.sync-btn:hover { background: rgba(52,152,219,0.25); }
.sync-btn.spinning i { animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.sync-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 14px;
}
.sync-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 10px 12px;
  background: rgba(255,255,255,0.04);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255,255,255,0.06);
}
.sync-key { font-size: 0.68rem; color: var(--text-sub); font-weight: 500; }
.sync-val {
  font-size: 0.88rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.5px;
}
.sync-val.server { color: var(--info); }
.sync-val.ok     { color: var(--primary); }
.sync-val.warn   { color: var(--accent); }
.sync-val.error  { color: var(--danger); }

.sync-notice {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  background: rgba(243,156,18,0.1);
  border: 1px solid rgba(243,156,18,0.25);
  font-size: 0.78rem;
  color: var(--accent);
  margin-bottom: 12px;
  line-height: 1.5;
}
.sync-notice i { flex-shrink: 0; margin-top: 2px; }
.sync-notice.info-type { background: rgba(52,152,219,0.1); border-color: rgba(52,152,219,0.25); color: var(--info); }
.sync-notice.ok-type   { background: rgba(46,204,113,0.1);  border-color: rgba(46,204,113,0.25);  color: var(--primary); }

.btn-sync-full {
  background: rgba(52,152,219,0.12);
  border: 1.5px solid rgba(52,152,219,0.35);
  color: var(--info);
  padding: 12px;
  font-size: 0.88rem;
}
.btn-sync-full:hover { background: rgba(52,152,219,0.25); transform: translateY(-1px); }
.btn-sync-full.synced {
  background: rgba(46,204,113,0.12);
  border-color: rgba(46,204,113,0.35);
  color: var(--primary);
}

.sync-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  background: rgba(46,204,113,0.12);
  border: 1px solid rgba(46,204,113,0.25);
  border-radius: 20px;
  font-size: 0.72rem;
  color: var(--primary);
  font-weight: 600;
  margin-top: 8px;
}

/* ===== 초읽기(Final Countdown) 모드 ===== */
.final-countdown {
  text-align: center;
  padding: 10px 0 6px;
  animation: final-bg-pulse 1s ease-in-out infinite alternate;
}
@keyframes final-bg-pulse {
  from { opacity: 0.85; }
  to   { opacity: 1; }
}
.final-label {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--danger);
  letter-spacing: 1px;
  margin-bottom: 8px;
  animation: blink 0.6s ease-in-out infinite alternate;
}
@keyframes blink { from { opacity:1; } to { opacity:0.4; } }

.final-num {
  font-size: 5rem;
  font-weight: 900;
  line-height: 1;
  background: linear-gradient(135deg, #ff4757, #ff6b81);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-variant-numeric: tabular-nums;
  transition: transform 0.1s;
}
.final-num.tick { transform: scale(1.08); }

.final-unit {
  font-size: 1rem;
  color: var(--text-sub);
  font-weight: 600;
  margin: 4px 0;
}
.final-ms {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  letter-spacing: 2px;
  line-height: 1.2;
}

/* 초읽기 모드일 때 카운트다운 카드 테두리 강조 */
.countdown-card.final-mode {
  border-color: rgba(255,71,87,0.5);
  box-shadow: 0 0 24px rgba(255,71,87,0.15);
  animation: card-pulse 1s ease-in-out infinite alternate;
}
@keyframes card-pulse {
  from { box-shadow: 0 0 16px rgba(255,71,87,0.1); }
  to   { box-shadow: 0 0 32px rgba(255,71,87,0.3); }
}

/* 팝업 가이드 */
.auto-tip { font-size: 0.78rem; color: var(--accent); }
.popup-guide {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  margin: 12px 0;
  font-size: 0.78rem;
}
.popup-guide-title {
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
  font-size: 0.8rem;
}
.popup-guide-title i { color: var(--accent); }
.popup-guide ol {
  padding-left: 18px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  color: var(--text-sub);
  line-height: 1.5;
}
.popup-guide strong { color: var(--text-main); }

/* ===== 반응형 ===== */
@media (max-width: 400px) {
  .countdown-num { font-size: 2.2rem; min-width: 58px; }
  .info-grid { grid-template-columns: 1fr; }
  .app-header { gap: 10px; padding: 16px; }
  .header-text h1 { font-size: 0.95rem; }
}

@media (min-width: 541px) {
  .app-wrapper { padding: 32px 20px 60px; }
}