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

:root {
  --bg-dark: #0a0a0f;
  --glass-bg: rgba(255, 255, 255, 0.07);
  --glass-border: rgba(255, 255, 255, 0.14);
  --glass-blur: blur(22px);
  --accent: #fe2c55;
  --accent2: #69c9d0;
  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.58);
  --footer-height: 72px;
  --popup-radius: 22px;
  --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

html,
body {
  width: 100%;
  height: 100%;
  background: var(--bg-dark);
  color: var(--text-primary);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  overflow: hidden;
}

/* === LIVE CONTAINER === */
#live-container {
  position: fixed;
  inset: 0;
  bottom: var(--footer-height);
  background: #111;
}

#live-frame {
  width: 100%;
  height: 100%;
  border: none;
  background: #111;
}

/* === OVERLAY === */
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.52);
  z-index: 100;
  transition: opacity var(--transition);
  opacity: 1;
}

.overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

/* === POPUP BASE === */
.popup {
  position: fixed;
  bottom: var(--footer-height);
  left: 0;
  right: 0;
  z-index: 200;
  background: rgba(18, 18, 28, 0.82);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-bottom: none;
  border-radius: var(--popup-radius) var(--popup-radius) 0 0;
  max-height: 70vh;
  display: flex;
  flex-direction: column;
  transform: translateY(100%);
  opacity: 0;
  transition:
    transform var(--transition),
    opacity var(--transition);
  pointer-events: none;
}

.popup.active {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.popup.hidden {
  display: none;
}

/* === POPUP HEADER === */
.popup-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px 12px;
  border-bottom: 1px solid var(--glass-border);
  flex-shrink: 0;
}

.popup-header h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.2px;
}

.btn-close {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
  font-size: 14px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition:
    background 0.2s,
    transform 0.15s;
}

.btn-close:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: scale(1.08);
}

/* === CHAT POPUP === */
.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 14px 20px;
  display: flex;
  flex-direction: column;
  gap: 9px;
  scroll-behavior: smooth;
}

.chat-messages::-webkit-scrollbar {
  width: 3px;
}

.chat-messages::-webkit-scrollbar-track {
  background: transparent;
}

.chat-messages::-webkit-scrollbar-thumb {
  background: var(--glass-border);
  border-radius: 2px;
}

.chat-msg {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.5;
  animation: fadeInUp 0.25s ease both;
}

.chat-user {
  font-weight: 700;
  color: var(--accent2);
}

.chat-input-row {
  display: flex;
  gap: 10px;
  padding: 12px 20px 16px;
  flex-shrink: 0;
  border-top: 1px solid var(--glass-border);
}

#chat-input {
  flex: 1;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  padding: 10px 16px;
  color: var(--text-primary);
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s;
}

#chat-input:focus {
  border-color: var(--accent2);
}

#chat-input::placeholder {
  color: var(--text-secondary);
}

#btn-send-chat {
  background: linear-gradient(135deg, var(--accent), #ff6b6b);
  color: #fff;
  border: none;
  border-radius: 24px;
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition:
    opacity 0.2s,
    transform 0.15s;
}

#btn-send-chat:hover {
  opacity: 0.88;
  transform: scale(1.03);
}

/* === GIFT POPUP === */
.gift-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  padding: 14px 20px;
  overflow-y: auto;
  flex: 1;
}

.gift-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  padding: 10px 6px;
  border-radius: 14px;
  border: 1.5px solid transparent;
  background: rgba(255, 255, 255, 0.05);
  cursor: pointer;
  transition:
    border-color 0.2s,
    background 0.2s,
    transform 0.18s;
  text-align: center;
}

.gift-item:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: scale(1.06);
}

.gift-item.selected {
  border-color: var(--accent);
  background: rgba(254, 44, 85, 0.14);
}

.gift-icon {
  font-size: 28px;
  line-height: 1;
}

.gift-name {
  font-size: 11px;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  width: 100%;
}

.gift-coin {
  font-size: 11px;
  color: var(--accent2);
  font-weight: 700;
}

.gift-action-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px 16px;
  border-top: 1px solid var(--glass-border);
  flex-shrink: 0;
  gap: 12px;
}

#gift-selected-info {
  font-size: 13px;
  color: var(--text-secondary);
  flex: 1;
}

#btn-send-gift {
  background: linear-gradient(135deg, var(--accent), #ff6b6b);
  color: #fff;
  border: none;
  border-radius: 24px;
  padding: 10px 24px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition:
    opacity 0.2s,
    transform 0.15s;
  white-space: nowrap;
}

#btn-send-gift:hover {
  opacity: 0.88;
  transform: scale(1.03);
}

/* === TOP DONATE === */
.top-list {
  overflow-y: auto;
  padding: 12px 20px 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}

.top-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 16px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.05);
  animation: fadeInUp 0.3s ease both;
}

.top-rank {
  font-size: 20px;
  font-weight: 800;
  min-width: 36px;
  text-align: center;
}

.top-rank.gold {
  color: #ffd700;
}
.top-rank.silver {
  color: #c0c0c0;
}
.top-rank.bronze {
  color: #cd7f32;
}
.top-rank.normal {
  color: var(--text-secondary);
  font-size: 15px;
}

.top-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 17px;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}

.top-info {
  flex: 1;
}

.top-username {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
}

.top-coins {
  font-size: 13px;
  color: var(--accent2);
  font-weight: 600;
  margin-top: 2px;
}

/* === FOOTER BAR === */
#footer-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--footer-height);
  z-index: 300;
  display: flex;
  align-items: center;
  justify-content: space-around;
  background: rgba(8, 8, 14, 0.92);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-top: 1px solid var(--glass-border);
  padding-bottom: env(safe-area-inset-bottom);
}

.footer-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 8px 28px;
  border-radius: 14px;
  transition:
    background 0.2s,
    color 0.2s,
    transform 0.15s;
  min-width: 80px;
}

.footer-btn:hover {
  background: rgba(255, 255, 255, 0.07);
  color: var(--text-primary);
}

.footer-btn:active {
  transform: scale(0.93);
}

.footer-btn.active-btn {
  color: var(--accent);
}

.btn-icon {
  font-size: 22px;
  line-height: 1;
}

.btn-label {
  font-size: 11px;
  font-weight: 500;
  color: inherit;
}

/* === ANIMATIONS === */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
  .gift-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    padding: 12px 14px;
  }

  .footer-btn {
    padding: 8px 16px;
    min-width: 64px;
  }

  .popup-header {
    padding: 14px 16px 10px;
  }

  .chat-messages,
  .top-list {
    padding: 10px 14px;
  }

  .chat-input-row,
  .gift-action-row {
    padding: 10px 14px 14px;
  }
}

@media (max-width: 360px) {
  .gift-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}