:root {
  /* Bien mau web */
  --text-color: #000000;
  --blue-gradient: linear-gradient(135deg, #89f7fe, #66a6ff);
  --success-color: #28c76f;
  --danger-color: #ea5455;
  --warning-color: #f9a825;
  --info-color: #00cfe8;
  --button-color: #f7f8fa;

  /* Bien hieu ung Glass */
  --glass-bg: rgba(255, 255, 255, 0.22);
  --glass-blur: 15px;
  --glass-border: 1px solid rgba(255, 255, 255, 0.3);
  --glass-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.5);
}

/* Bien giao dien toi */
body.darkmode {
  --text-color: #ffffff;
  --muted-color: #dddddd;
  --shadow-light: #c0c0c0;
  --shadow-dark: #070c17;
  /* Tuy chinh mau cho hieu ung Glass */
  --glass-bg: rgba(255, 255, 255, 0.05);
  --glass-border: 1px solid rgba(255, 255, 255, 0.1);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border-radius: 20px;
  border: var(--glass-border);
  box-shadow: var(--glass-shadow);
  position: relative;
  overflow: hidden;
}

.glass-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.8),
    transparent
  );
}

.glass-card::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 1px;
  height: 100%;
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.8),
    transparent,
    rgba(255, 255, 255, 0.3)
  );
}
/* Loai bo animation(cho website muot hon) */
.bg-animated {
  display: none !important;
}

/* Mau sac cho bg*/
.webody {
  background-image: url(../assets/images/webbg-light.png);
  background-size: cover;
  background-repeat: no-repeat;
  background-attachment: fixed;
}

.webody.darkmode {
  background-image: url(../assets/images/globalbg-dark.png);
  background-size: cover;
  background-repeat: no-repeat;
}

@keyframes gradientAnimation {
  0%,
  100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

body {
  font-family: "Segoe UI", "Roboto", "Helvetica Neue", Arial, sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding: 50px 20px 100px;
  min-height: 100vh;
  background: var(--bg-color);
  color: var(--text-color);
  transition: background 0.3s, color 0.3s;
  position: relative;
  overflow-x: hidden;
  border: var(--card-border);
}

body::before {
  content: none;
}

.container,
.section {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  border: var(--glass-border);
  transition: background 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
  position: sticky;
}

.container::before,
.section::before {
  content: "";
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.8),
    transparent
  );
}

.container {
  position: sticky;
  border-radius: 20px;
  padding: 32px;
  box-shadow: var(--glass-shadow);
  max-width: 1000px;
  border: var(--glass-border);
  width: 100%;
  animation: fadeInScale 0.6s ease-out forwards;
  opacity: 0;
  transform: scale(0.98);
}

.section {
  position: sticky;
  border-radius: 16px;
  padding: 18px;
  margin-bottom: 20px;
}

@keyframes fadeInScale {
  to {
    opacity: 1;
    transform: scale(1);
  }
}

h1 {
  text-align: center;
  font-size: 1.8em;
  font-weight: 800;
  margin: 0 0 20px 0;
  background: var(--blue-gradient);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 2px 2px 10px rgba(0, 0, 0, 0.1);
}

h2 {
  text-align: center;
  font-weight: 800;
  margin: 0 0 20px 0;
  background: var(--blue-gradient);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 2px 2px 10px rgba(0, 0, 0, 0.1);
  text-align: center;
}

#word-to-type {
  font-size: 3em;
  font-weight: 900;
  color: var(--text-color);
  margin: 10px 0 4px 0;
  min-height: 60px;
  text-align: center;
  transition: color 0.3s ease;
}
#word-meaning {
  font-size: 1.2em;
  color: var(--muted-color);
  margin-bottom: 18px;
  min-height: 28px;
  font-style: italic;
  text-align: center;
}

#typing-input {
  width: 100%;
  padding: 16px 4px;
  font-size: 1.2em;
  margin-bottom: 12px;
  border: var(--glass-border);
  border-radius: 50px;
  text-align: center;
  box-shadow: var(--glass-shadow);
  transition: all 0.3s ease;
  background: transparent;
  color: var(--text-color);
  caret-color: var(--primary-color);
}
#typing-input:focus {
  outline: none;
  border-radius: 30px;
  box-shadow: var(--glass-shadow), 0 0 0 3px rgba(0, 122, 255, 0.12);
}

#feedback,
#speech-feedback {
  font-size: 1.1em;
  font-weight: 600;
  min-height: 26px;
  text-align: center;
  transition: all 0.25s ease;
}
#speech-feedback {
  min-height: 40px;
  color: var(--muted-color);
}
#stats {
  margin-top: 12px;
  font-size: 0.95em;
  color: var(--muted-color);
  text-align: center;
}

.row {
  display: grid;
  gap: 12px;
  margin-top: 16px;
}
.row {
  grid-template-columns: 1fr;
}
.row.two {
  grid-template-columns: 1fr 1fr;
}
.row.three {
  grid-template-columns: 1fr 1fr 1fr;
}
#settings-panel .row.two {
  grid-template-columns: 3fr 1fr;
}

button {
  padding: 12px 16px;
  font-size: 1.05em;
  cursor: pointer;
  background: var(--glass-bg);
  color: var(--text-color);
  backdrop-filter: blur(var(--glass-blur));
  border: none;
  border-radius: 20px;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  border: var(--glass-border);
  box-shadow: var(--glass-shadow);
  font-weight: 600;
}
button:hover {
  transform: translateY(-3px);
  box-shadow: 14px 14px 14px rgba(0, 0, 0, 0.1),
    0px 0px 14px rgba(255, 255, 255, 0.7);
}
button:active {
  transform: translateY(0);
  box-shadow: var(--glass-shadow);
}
button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  box-shadow: var(--glass-shadow);
}

#start-button {
  background: var(--blue-gradient);
  color: white;
  box-shadow: 0 6px 25px rgba(0, 123, 255, 0.35);
  border: var(--glass-border);
}
#start-button:hover {
  box-shadow: 0 8px 28px rgba(0, 123, 255, 0.45);
  transform: translateY(-4px);
}
#start-button:active {
  box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.3);
  transform: translateY(0);
}

.correct {
  color: var(--success-color);
  transform: scale(1.02);
}
.incorrect {
  color: var(--danger-color);
  transform: scale(1.02);
}
.listening {
  color: var(--warning-color);
}
.info {
  color: var(--info-color);
}
.speaking {
  color: #6610f2;
}

.support-notice {
  padding: 10px;
  margin-bottom: 10px;
  border-radius: 8px;
  font-size: 0.9em;
  display: none;
}
.support-notice {
  color: #856404;
  background-color: #fff3cd;
  border: 1px solid #ffeeba;
}
#dictionary-error-notice {
  color: #721c24;
  background-color: #f8d7da;
  border-color: #f5c6cb;
}

.toolbar {
  display: flex;
  gap: 12px;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.toolbar button {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1em;
  padding: 0;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 999px;
  color: var(--text-color);
  font-size: 0.9em;
  background: rgba(0, 0, 0, 0.06);
}
body.darkmode .chip {
  background: rgba(255, 255, 255, 0.12);
}
.chip select {
  background: transparent;
  border: none;
  color: inherit;
  font-size: 1em;
  -webkit-appearance: none;
  appearance: none;
}
.chip select:focus {
  outline: none;
}
#pvp-progress {
  max-width: 100%;
  overflow: hidden;
  padding: 12px;
}

.pvp-player-progress {
  max-width: 100%;
  overflow: hidden;
  margin-bottom: 16px;
}

.progress-bar-container {
  width: 100%;
  height: 24px;
  background: var(--glass-bg);
  border-radius: 12px;
  overflow: hidden;
  position: relative;
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

.progress-bar {
  height: 100%;
  width: 0%;
  transition: width 0.3s ease;
  border-radius: 12px;
  position: relative;
  overflow: hidden;
}

/* Segment styles for word status visualization */
.progress-bar > div {
  position: absolute;
  top: 0;
  height: 100%;
  border-right: 1px solid rgba(255, 255, 255, 0.2);
}

.pvpBarWrap {
  position: relative;
  width: 100%;
  height: 6px;
  background: #333;
  border-radius: 3px;
  margin-top: 6px;
  overflow: hidden;
}

.pvpBarYour, .pvpBarOpp {
  height: 100%;
  transition: width 0.25s ease;
  position: absolute;
  top: 0;
}

.pvpBarYour { 
  left: 0;
  background: #00e676; 
}

.pvpBarOpp { 
  right: 0;
  background: #ff1744; 
}
.modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.35);
  align-items: center;
  justify-content: center;
  z-index: 1000;
  animation: fadeIn 0.3s ease;
}

.modal .content {
  width: min(1000px, 100vw);
  max-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  border-radius: 16px;
  border: var(--glass-border);
  box-shadow: 0 10px 30px var(--glass-shadow);
  color: var(--text-color);
}
.modal header {
  padding: 12px 16px;
  border-bottom: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
}
.modal header h3 {
  font-size: 1.05em;
  margin: 0;
}
.modal header button {
  background: transparent;
  box-shadow: none;
  color: var(--muted-color);
  font-size: 1.4em;
}
.modal header button:hover {
  color: var(--danger-color);
}
.modal main {
  padding: 14px;
  overflow-y: auto;
  flex: 1;
}
.modal footer {
  padding: 16px 20px;
  border-top: 1px solid var(--glass-border);
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-shrink: 0;
  background: var(--glass-bg);
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.pill {
  font-size: 0.85em;
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--glass-bg);
}
.plan {
  display: grid;
  gap: 12px;
}
.plan .card {
  border: var(--glass-border);
  border-radius: 12px;
  padding: 12px;
  background: var(--glass-bg);
}
body.darkmode .plan .card {
  background: var(--glass-bg);
}
.muted {
  opacity: 0.85;
  font-size: 0.95em;
}

.home-button {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 60px;
  height: 60px;
  color: white;
  border: none;
  border-radius: 50%;
  font-size: 24px;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(1, 255, 14, 0.3);
  box-shadow: var(--glass-shadow);
}
.home-button:hover {
  transform: scale(1.08) rotate(8deg);
  background: rgba(1, 255, 14, 0.5);
  box-shadow: 14px 14px 14px rgba(0, 0, 0, 0.1),
    0px 0px 14px rgba(1, 255, 14, 0.5);
}
.home-button:active {
  transform: scale(1);
}

#progress-container {
  width: 100%;
  height: 8px;
  background: var(--glass-bg);
  border-radius: 8px;
  margin-top: 8px;
  overflow: hidden;
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.08);
}
#progress-bar {
  height: 100%;
  width: 0%;
  background: var(--blue-gradient);
  transition: width 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  border-radius: 8px;
}

#timer-section {
  display: flex;
  gap: 8px;
  align-items: center;
  justify-content: center;
  margin-top: 8px;
}
#typing-timer {
  font-weight: 800;
  font-size: 1.15em;
  padding: 8px 12px;
  border-radius: 15px;
  border: var(--glass-border);
  background: var(--glass-bg);
}
#timer-input {
  width: 72px;
  padding: 8px 10px;
  border-radius: 15px;
  border: var(--glass-border);
  background: var(--glass-bg);
  color: var(--text-color);
}

/* PvP Nhat vs Quan*/
.pvpBarWrap {
  position: relative;
  width: 100%;
  height: 6px;
  background: #333;
  border-radius: 3px;
  margin-top: 6px;
  overflow: hidden;
}
.pvpBarYour, .pvpBarOpp {
  height: 6px;
  transition: width 0.25s ease;
}
.pvpBarYour { float: left; background: #00e676; }
.pvpBarOpp { float: right; background: #ff1744; }


#pvp-panel {
  display: none;
  max-width: 800px;
  width: 100%;
  margin-top: 10px;
}
#pvp-rooms-list {
  max-height: 200px;
  overflow: auto;
  border-top: 1px dashed var(--glass-shadow);
  margin-top: 10px;
  padding-top: 10px;
}
.room-item {
  padding: 10px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  border: 1px solid var(--glass-shadow);
  margin-bottom: 8px;
}

.pvp-lobby {
  display: grid;
  gap: 8px;
}
.pvp-lobby .controls {
  display: flex;
  gap: 8px;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
}
.pvp-lobby .progress-rows {
  display: flex;
  gap: 8px;
  flex-direction: column;
}

.progress-bar {
  width: 100%;
  height: 12px;
  background: var(--glass-bg);
  border-radius: 8px;
  overflow: hidden;
}
.progress-bar-inner {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #4caf50, #66bb6a);
  transition: width 0.3s ease;
}

/* Leaderboard Styles */
#leaderboard-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 12px;
}
#leaderboard-table th,
#leaderboard-table td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: var(--card-border);
}
#leaderboard-table th {
  font-weight: 700;
  color: var(--primary-color);
}
#leaderboard-table tr:last-child td {
  border-bottom: none;
}
#leaderboard-table .rank {
  font-weight: bold;
  font-size: 1.04em;
  text-align: center;
}
#leaderboard-table .score {
  font-weight: bold;
  text-align: right;
}
.loading-spinner {
  font-size: 2em;
  display: block;
  text-align: center;
  margin: 20px;
}

.session-item {
  padding: 12px;
  border-radius: 10px;
  cursor: pointer;
  border: 1px solid transparent;
  margin-bottom: 8px;
  transition: background-color 0.2s, border-color 0.2s;
}
.session-item:hover {
  background-color: var(--glass-bg);
  border-color: var(--glass-border);
}
.session-item.active {
  background-color: var(--glass-bg);
  font-weight: bold;
  border-color: var(--glass-border);
}

@media (max-width: 720px) {
  #word-to-type {
    font-size: 2.4em;
  }
  .toolbar {
    gap: 8px;
  }
}

.toolbar {
  padding: 12px 12px;
  font-size: 1.05em;
  background: var(--glass-bg);
  border: none;
  border-radius: 15px;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  box-shadow: var(--glass-shadow);
  font-weight: 600;
  backdrop-filter: blur(var(--glass-blur));
}

.pyp-lobby {
  padding: 12px 12px;
  font-size: 1.05em;
  background: var(--glass-bg);
  border: none;
  border-radius: 15px;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  box-shadow: var(--glass-shadow);
  font-weight: 600;
}

.web-logo {
  width: 250px;
  height: auto;
  transition: ease-out 0.15s;
}

.web-logo:hover {
  width: 270px;
  height: auto;
}

.login-logo {
  width: 250px;
  height: auto;
  transition: ease-out 0.15s;
  padding: 150px;
  align-content: center;
  align-items: center;
}

.login-logo:hover {
    width: 220px;
    height: auto;
}
#pvp-progress {
  max-width: 100%;
  overflow: hidden;
}

.pvp-player-progress {
  max-width: 100%;
  overflow: hidden;
}

.progress-bar-container {
  max-width: 100%;
  overflow: hidden;
  position: relative;
}

.progress-bar {
  max-width: 100%;
  transition: width 0.3s ease;
}
/* ============================================================
   UX/UI redesign bổ sung: layout chính + sidebar bảng xếp hạng
   + panel hồ sơ (profile) + PvP rõ ràng hơn
   ============================================================ */

/* Khu vực gõ luôn ở giữa màn hình (không bị lệch bởi bảng xếp hạng) */

/* Bảng xếp hạng: panel trượt ra từ bên phải, ẩn mặc định, bấm nút cúp để mở/đóng */
.leaderboard-sidebar {
  position: fixed;
  top: 0;
  right: 0;
  height: 100vh;
  width: 320px;
  max-width: 88vw;
  border-radius: 20px 0 0 20px;
  padding: 24px 20px;
  overflow-y: auto;
  z-index: 999;
  transform: translateX(105%);
  transition: transform 0.3s ease;
  box-shadow: -8px 0 30px rgba(0, 0, 0, 0.18);
}
.leaderboard-sidebar.open {
  transform: translateX(0);
}
.leaderboard-sidebar::-webkit-scrollbar {
  width: 6px;
}
.leaderboard-sidebar::-webkit-scrollbar-thumb {
  background: rgba(127, 127, 127, 0.4);
  border-radius: 6px;
}
@media (max-width: 720px) {
  .leaderboard-sidebar {
    width: 100vw;
    max-width: 100vw;
    border-radius: 0;
  }
}

/* Panel Hồ sơ (settings-panel được tái sử dụng làm panel hồ sơ đầy đủ) */
.profile-panel {
  display: none;
  max-width: 460px !important;
  width: 92% !important;
  text-align: left;
  position: relative;
  margin: 0 auto 20px;
}
.profile-close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 36px !important;
  height: 36px !important;
  min-width: 0;
  padding: 0 !important;
  border-radius: 50% !important;
  font-size: 0.95em;
}
.profile-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 8px;
  padding-right: 30px;
}
.profile-avatar {
  flex: 0 0 56px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--blue-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5em;
  font-weight: 800;
  color: #fff;
}
.profile-name {
  font-size: 1.15em;
  font-weight: 800;
}
.profile-select {
  width: 100%;
  padding: 10px;
  border-radius: 12px;
  border: var(--card-border);
  background: var(--card-bg);
  color: var(--text-color);
  margin-top: 4px;
  box-sizing: border-box;
}
.profile-section-title {
  font-size: 0.8em;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  opacity: 0.7;
  font-weight: 700;
  margin: 20px 0 8px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.profile-section-title.danger-zone-title {
  color: var(--danger-color);
  opacity: 1;
}
.profile-actions-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.profile-actions-grid button {
  font-size: 0.92em;
  padding: 10px 8px;
  border-radius: 14px;
}
.danger-button {
  color: var(--danger-color);
  border: 1px solid rgba(234, 84, 85, 0.4) !important;
}
.danger-button:hover {
  background: rgba(234, 84, 85, 0.12);
}

/* PvP rõ ràng hơn */
.pvp-panel {
  display: none;
  max-width: 800px;
  width: 100%;
  margin: 0 auto 20px;
}
.pvp-progress-row {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  align-items: center;
}
.pvp-rooms-heading {
  margin-top: 14px;
  padding-top: 10px;
  border-top: 1px dashed rgba(127, 127, 127, 0.35);
  font-weight: 700;
  font-size: 0.92em;
  opacity: 0.85;
  text-align: center;
}