/* css/common.css */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@400;500;600;700;800&family=Noto+Sans+SC:wght@400;500;700;900&display=swap');

:root {
  --bg: #F8F6F0;
  --bg-dark: #1E1E1C;
  --card: #FFFFFF;
  --card-dark: #2A2A28;
  --card2: #F3EFE7;
  --card2-dark: #353533;
  --tx: #2E2D2B;
  --tx-dark: #F0EDE6;
  --tx2: #726E66;
  --tx2-dark: #A5A198;
  --tx3: #ABA79E;
  --tx3-dark: #7E7A72;
  
  /* Primary Green Theme */
  --grn: #2D6A4F;
  --grn2: #1B4332;
  --grnbg: #D8F3DC;
  --grntx: #2D6A4F;
  
  /* Danger/Red Theme */
  --red: #D90429;
  --red2: #B3001B;
  --redbg: #FEEAEA;
  --redtx: #D90429;
  
  /* Warning/Amber Theme */
  --amb: #D97706;
  --ambbg: #FEF3C7;
  --ambtx: #B45309;

  /* Info/Blue Theme */
  --ink: #2563EB;
  --inkbg: #DBEAFE;
  
  /* Purple Theme */
  --pur: #7C3AED;
  --purbg: #EDE9FE;

  --badge: #EADFC9;
  --bdr: #E5E1D8;
  --bdr2: #C8C2B4;
  --radius: 16px;
  --radius2: 20px;
  --font: "Outfit", "Noto Sans SC", -apple-system, BlinkMacSystemFont, sans-serif;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
  --shadow-hover: 0 10px 30px rgba(0, 0, 0, 0.08);
}

@media(prefers-color-scheme: dark) {
  :root {
    --bg: var(--bg-dark);
    --card: var(--card-dark);
    --card2: var(--card2-dark);
    --tx: var(--tx-dark);
    --tx2: var(--tx2-dark);
    --tx3: var(--tx3-dark);
    --bdr: #3E3E3C;
    --bdr2: #555552;
    --badge: #4A4A48;
    --grnbg: #1A3E2F;
    --redbg: #471A1A;
    --ambbg: #4F3210;
    --inkbg: #1B2E4E;
    --purbg: #2D1E4E;
  }
}

* {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
  transition: background-color 0.2s, border-color 0.2s;
}

html, body {
  margin: 0;
  padding: 0;
  background-color: var(--bg);
  color: var(--tx);
  font-family: var(--font);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  padding: 20px;
  max-width: 600px;
  margin: 0 auto;
  min-height: 100vh;
  padding-bottom: 100px;
}

/* Nav bar */
.nav {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  max-width: 600px;
  margin: 0 auto;
  background-color: var(--card);
  border-top: 1px solid var(--bdr);
  display: flex;
  padding: 10px 0 calc(10px + env(safe-area-inset-bottom));
  box-shadow: 0 -4px 30px rgba(0, 0, 0, 0.05);
  z-index: 100;
  border-radius: 20px 20px 0 0;
}

.nav button {
  flex: 1;
  background: none;
  border: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  cursor: pointer;
  color: var(--tx3);
  font-family: var(--font);
  font-size: 12px;
  font-weight: 600;
  position: relative;
}

.nav button.on {
  color: var(--grn);
}

.nav .ic {
  width: 24px;
  height: 24px;
}

.nav .navbadge {
  position: absolute;
  top: -4px;
  left: 50%;
  margin-left: 10px;
  background-color: var(--red);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  min-width: 16px;
  height: 16px;
  line-height: 16px;
  border-radius: 8px;
  padding: 0 4px;
}

/* Buttons */
.primary {
  display: block;
  width: 100%;
  background-color: var(--grn);
  color: #fff;
  border: none;
  font-size: 18px;
  font-weight: 700;
  padding: 16px;
  border-radius: var(--radius);
  cursor: pointer;
  font-family: var(--font);
  box-shadow: 0 4px 14px rgba(45, 106, 79, 0.3);
  transition: transform 0.1s, background-color 0.2s;
}

.primary:active {
  transform: scale(0.98);
  background-color: var(--grn2);
}

.primary[disabled] {
  background-color: var(--bdr2);
  color: #fff;
  cursor: not-allowed;
  box-shadow: none;
}

.outline {
  display: block;
  width: 100%;
  background-color: transparent;
  color: var(--grntx);
  border: 2px solid var(--grn);
  font-size: 16px;
  font-weight: 700;
  padding: 14px;
  border-radius: var(--radius);
  cursor: pointer;
  font-family: var(--font);
  transition: transform 0.1s;
}

.outline:active {
  transform: scale(0.98);
}

.ghost-btn {
  background-color: var(--badge);
  border: none;
  color: var(--tx2);
  font-size: 13px;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: 18px;
  cursor: pointer;
  font-family: var(--font);
}

.ghost-btn.on {
  background-color: var(--grn);
  color: #fff;
}

/* Cards & Lists */
.list-card {
  background-color: var(--card);
  border: 1px solid var(--bdr);
  border-radius: var(--radius2);
  padding: 10px 20px;
  box-shadow: var(--shadow);
  margin-top: 10px;
}

/* Toast */
.toast {
  position: fixed;
  left: 50%;
  bottom: 100px;
  transform: translateX(-50%) translateY(20px);
  background-color: var(--grn2);
  color: #fff;
  padding: 12px 24px;
  border-radius: 30px;
  font-size: 14px;
  font-weight: 600;
  opacity: 0;
  transition: opacity 0.25s, transform 0.25s;
  pointer-events: none;
  z-index: 1000;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  max-width: 90%;
  text-align: center;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* Common Header Styles */
/* Optimized Topbar Styles */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  background-color: var(--card);
  border-bottom: 1px solid var(--bdr);
  max-width: 600px;
  margin: 0 auto;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow);
}

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

.topbar .brand {
  font-size: 18px;
  font-weight: 800;
  color: var(--grntx);
  letter-spacing: 0.5px;
}

.topbar .home-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  text-decoration: none;
  font-size: 13px;
  font-weight: 700;
  color: var(--grn);
  background-color: var(--grnbg);
  padding: 6px 12px;
  border-radius: 20px;
  border: 1px solid rgba(45, 106, 79, 0.2);
  transition: all 0.2s ease;
}

.topbar .home-btn:hover {
  background-color: var(--grn);
  color: #fff !important;
  transform: translateY(-1px);
}

.topbar .home-btn:active {
  transform: translateY(0);
}

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

.topbar .user-info {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--tx2);
  font-weight: 600;
}

.topbar .user-nickname {
  background-color: var(--card2);
  padding: 4px 10px;
  border-radius: 12px;
  border: 1px solid var(--bdr);
}

.topbar .login-link {
  color: var(--grn);
  text-decoration: none;
  font-weight: 700;
  transition: color 0.2s ease;
}

.topbar .login-link:hover {
  color: var(--grn2);
}

.topbar .logout-btn {
  color: var(--redtx);
  background-color: var(--redbg);
  padding: 4px 10px;
  border-radius: 12px;
  transition: all 0.2s ease;
}

.topbar .logout-btn:hover {
  background-color: var(--red);
  color: #fff !important;
}

/* Specific styling for bookBadge if placed in rightContainer */
.topbar #bookBadge {
  background-color: var(--badge);
  color: var(--tx);
  border: none;
  font-size: 13px;
  font-weight: 700;
  padding: 6px 12px;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.topbar #bookBadge:hover {
  filter: brightness(0.95);
  transform: translateY(-1px);
}

/* Subtop navigation */
.subtop {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 15px;
}

.back {
  background-color: var(--card2);
  border: none;
  width: 38px;
  height: 38px;
  border-radius: 12px;
  font-size: 18px;
  cursor: pointer;
  color: var(--tx2);
  display: flex;
  align-items: center;
  justify-content: center;
}

.back:active {
  transform: scale(0.95);
}

.session-progress {
  font-size: 14px;
  color: var(--tx2);
  font-weight: 700;
}