/* bamboochat CSS Design System - Premium Black & Gold Theme */

:root {
  /* Premium Dark Color Palette */
  --bg-dark-900: #08080a;
  --bg-dark-800: #101014;
  --bg-dark-700: #181820;
  --bg-dark-600: #22222d;
  
  /* Luxury Gold Gradient Palette */
  --gold-dark: #aa7c11;
  --gold-primary: #d4af37;
  --gold-light: #f6e6b4;
  --gold-secondary: #f3e5ab;
  --gold-gradient: linear-gradient(135deg, #aa7c11 0%, #d4af37 50%, #f6e6b4 100%);
  --gold-text-gradient: linear-gradient(135deg, #f6e6b4 0%, #d4af37 70%, #aa7c11 100%);
  
  /* Text Colors */
  --text-pure: #ffffff;
  --text-high: #e5e5eb;
  --text-muted: #8e8e9f;
  --text-dark: #121212;

  /* Glassmorphism Settings */
  --glass-bg: rgba(16, 16, 20, 0.7);
  --glass-bg-hover: rgba(26, 26, 32, 0.85);
  --glass-border: rgba(212, 175, 55, 0.25);
  --glass-border-focus: rgba(212, 175, 55, 0.6);
  --glass-shadow: 0 16px 40px 0 rgba(0, 0, 0, 0.7);
  --gold-glow: 0 0 15px rgba(212, 175, 55, 0.35);
  --gold-glow-intense: 0 0 25px rgba(212, 175, 55, 0.6);

  /* System UI */
  --status-online: #00e676;
  --status-offline: #757575;
  --danger: #ff5252;
  --transition-smooth: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  --font-display: 'Cinzel', 'Montserrat', sans-serif;
  --font-body: 'Inter', 'Montserrat', sans-serif;
}

/* ==========================================================
   RESET & SYSTEM STYLES
   ========================================================== */

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

body {
  font-family: var(--font-body);
  background-color: var(--bg-dark-900);
  color: var(--text-high);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
  position: relative;
}

/* Background Canvas */
#canvas-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  background: radial-gradient(circle at center, #14141a 0%, #08080a 100%);
}

/* Custom Scrollbar for Chat Window */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: rgba(8, 8, 10, 0.3);
}

::-webkit-scrollbar-thumb {
  background: rgba(212, 175, 55, 0.25);
  border-radius: 3px;
  transition: var(--transition-smooth);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--gold-primary);
}

/* ==========================================================
   UTILITIES & ANIMATIONS
   ========================================================== */

.hide {
  display: none !important;
}

.fade-in {
  animation: fadeIn 0.6s cubic-bezier(0.25, 0.8, 0.25, 1) forwards;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.golden-glow {
  filter: drop-shadow(0 0 8px var(--gold-primary));
}

/* Glass Card Style */
.card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-radius: 16px;
  box-shadow: var(--glass-shadow);
  transition: var(--transition-smooth);
}

.card:hover {
  border-color: rgba(212, 175, 55, 0.35);
}

/* Premium Golden Button */
.gold-btn {
  background: var(--gold-gradient);
  color: var(--text-dark);
  border: none;
  padding: 14px 28px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: 1px;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  transition: var(--transition-smooth);
  box-shadow: 0 4px 15px rgba(212, 175, 55, 0.15);
  position: relative;
  overflow: hidden;
}

.gold-btn::after {
  content: '';
  position: absolute;
  top: 0;
  left: -50%;
  width: 200%;
  height: 100%;
  background: linear-gradient(
    to right,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.3) 50%,
    rgba(255, 255, 255, 0) 100%
  );
  transform: skewX(-25deg);
  transition: 0.75s ease;
  opacity: 0;
}

.gold-btn:hover {
  box-shadow: var(--gold-glow);
  transform: translateY(-2px);
}

.gold-btn:hover::after {
  opacity: 1;
  left: 125%;
}

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

/* ==========================================================
   LOGIN CARD INTERFACE
   ========================================================== */

#login-container {
  width: 90%;
  max-width: 460px;
  padding: 40px;
  text-align: center;
}

.brand-header {
  margin-bottom: 35px;
}

.logo-icon {
  font-size: 3rem;
  color: var(--gold-primary);
  margin-bottom: 12px;
  animation: float 4s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.brand-title {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: 4px;
  background: var(--gold-text-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 6px;
}

.brand-subtitle {
  font-size: 0.75rem;
  letter-spacing: 3px;
  color: var(--text-muted);
  font-weight: 500;
}

#login-form {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.input-group {
  display: flex;
  flex-direction: column;
  text-align: left;
  gap: 8px;
}

.input-group label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--gold-light);
  letter-spacing: 0.5px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.input-group input {
  background: rgba(8, 8, 10, 0.6);
  border: 1px solid var(--glass-border);
  color: var(--text-pure);
  padding: 14px 16px;
  border-radius: 8px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  outline: none;
  transition: var(--transition-smooth);
}

.input-group input:focus {
  border-color: var(--glass-border-focus);
  box-shadow: 0 0 10px rgba(212, 175, 55, 0.15);
  background: rgba(16, 16, 20, 0.8);
}

.input-group input::placeholder {
  color: #4a4a58;
}

/* ==========================================================
   CHATROOM INTERFACE
   ========================================================== */

#chat-container {
  width: 95vw;
  height: 90vh;
  max-width: 1100px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* Header */
#chat-header {
  padding: 16px 24px;
  border-bottom: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(12, 12, 16, 0.4);
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.header-logo {
  color: var(--gold-primary);
  font-size: 1.4rem;
  filter: drop-shadow(0 0 4px rgba(212, 175, 55, 0.5));
}

.header-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.3rem;
  letter-spacing: 2px;
  background: var(--gold-text-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.header-room-info {
  display: flex;
  align-items: center;
  gap: 12px;
}

.room-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.room-code-badge {
  background: rgba(212, 175, 55, 0.08);
  border: 1px solid var(--glass-border);
  padding: 8px 16px;
  border-radius: 20px;
  color: var(--gold-light);
  font-weight: 600;
  font-family: var(--font-body);
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.room-code-badge:hover {
  background: rgba(212, 175, 55, 0.15);
  border-color: var(--gold-primary);
  box-shadow: 0 0 8px rgba(212, 175, 55, 0.2);
}

.room-code-badge i {
  font-size: 0.85rem;
  color: var(--gold-primary);
}

.leave-btn {
  background: rgba(255, 82, 82, 0.1);
  color: var(--danger);
  border: 1px solid rgba(255, 82, 82, 0.3);
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition-smooth);
}

.leave-btn:hover {
  background: var(--danger);
  color: var(--text-pure);
  box-shadow: 0 0 10px rgba(255, 82, 82, 0.3);
}

/* Chat Body (Sidebar + Message Panel) */
#chat-body {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* Sidebar */
#chat-sidebar {
  width: 250px;
  border-right: 1px solid var(--glass-border);
  background: rgba(8, 8, 10, 0.2);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

.sidebar-title {
  padding: 20px;
  border-bottom: 1px solid rgba(212, 175, 55, 0.1);
  display: flex;
  align-items: center;
  gap: 8px;
}

.sidebar-title h3 {
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-high);
}

.status-online {
  color: var(--status-online);
  font-size: 0.5rem;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { opacity: 0.6; }
  50% { opacity: 1; }
  100% { opacity: 0.6; }
}

#online-users-list {
  list-style: none;
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

#online-users-list li {
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 0.9rem;
  color: var(--text-high);
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid transparent;
  transition: var(--transition-smooth);
}

#online-users-list li:hover {
  background: rgba(212, 175, 55, 0.05);
  border-color: rgba(212, 175, 55, 0.1);
}

#online-users-list li::before {
  content: '\f107';
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  font-size: 0.75rem;
  color: var(--gold-primary);
}

/* Message Panel */
#message-panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: rgba(12, 12, 16, 0.1);
}

/* Messages List */
#chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* Individual Message Bubble */
.msg-wrapper {
  display: flex;
  flex-direction: column;
  max-width: 75%;
}

.msg-wrapper.self {
  align-self: flex-end;
  align-items: flex-end;
}

.msg-wrapper.other {
  align-self: flex-start;
  align-items: flex-start;
}

.msg-username {
  font-size: 0.75rem;
  color: var(--gold-light);
  margin-bottom: 4px;
  font-weight: 500;
  padding-left: 4px;
}

.msg-bubble {
  padding: 12px 18px;
  border-radius: 16px;
  font-size: 0.95rem;
  line-height: 1.5;
  word-break: break-word;
}

.msg-wrapper.self .msg-bubble {
  background: rgba(212, 175, 55, 0.12);
  border: 1px solid rgba(212, 175, 55, 0.35);
  color: var(--text-pure);
  border-bottom-right-radius: 4px;
  box-shadow: 0 4px 15px rgba(212, 175, 55, 0.05);
}

.msg-wrapper.other .msg-bubble {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--text-high);
  border-bottom-left-radius: 4px;
}

.msg-time {
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-top: 4px;
  padding: 0 4px;
}

/* System messages */
.msg-system {
  align-self: center;
  text-align: center;
  background: rgba(212, 175, 55, 0.06);
  border: 1px solid rgba(212, 175, 55, 0.15);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.8rem;
  color: var(--gold-secondary);
  margin: 10px 0;
  max-width: 90%;
  animation: systemMessageFade 0.3s ease;
}

@keyframes systemMessageFade {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

/* Message Input Area */
#message-form {
  padding: 20px 24px;
  border-top: 1px solid var(--glass-border);
  background: rgba(8, 8, 10, 0.3);
}

.input-wrapper {
  display: flex;
  background: rgba(8, 8, 10, 0.5);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  padding: 6px 6px 6px 18px;
  align-items: center;
  transition: var(--transition-smooth);
}

.input-wrapper:focus-within {
  border-color: var(--glass-border-focus);
  box-shadow: 0 0 12px rgba(212, 175, 55, 0.15);
}

#message-input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-pure);
  outline: none;
  font-family: var(--font-body);
  font-size: 0.95rem;
  padding: 8px 0;
}

#message-input::placeholder {
  color: #4a4a58;
}

.send-btn {
  background: var(--gold-gradient);
  color: var(--text-dark);
  border: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: var(--transition-smooth);
}

.send-btn:hover {
  transform: scale(1.05);
  box-shadow: var(--gold-glow);
}

.send-btn:active {
  transform: scale(0.95);
}

/* ==========================================================
   TOAST NOTIFICATION COMPONENT
   ========================================================== */

#toast-container {
  position: fixed;
  top: 24px;
  right: 24px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 12px;
  pointer-events: none;
}

.toast {
  background: rgba(16, 16, 20, 0.9);
  border-left: 4px solid var(--gold-primary);
  border-top: 1px solid rgba(212, 175, 55, 0.1);
  border-right: 1px solid rgba(212, 175, 55, 0.1);
  border-bottom: 1px solid rgba(212, 175, 55, 0.1);
  box-shadow: var(--glass-shadow);
  color: var(--text-high);
  padding: 14px 20px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 250px;
  font-size: 0.85rem;
  font-family: var(--font-body);
  pointer-events: auto;
  animation: slideInRight 0.3s cubic-bezier(0.25, 0.8, 0.25, 1) forwards;
  transition: var(--transition-smooth);
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(100px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.toast.fade-out {
  opacity: 0;
  transform: translateX(100px);
}

.toast-icon {
  color: var(--gold-primary);
}

/* ==========================================================
   RESPONSIVE DESIGN (RWD)
   ========================================================== */

@media (max-width: 768px) {
  body {
    align-items: stretch;
    overflow: auto;
  }
  
  #app-wrapper {
    width: 100vw;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 12px;
  }

  #login-container {
    padding: 30px 20px;
    width: 100%;
  }

  #chat-container {
    width: 100%;
    height: 100%;
    min-height: calc(100vh - 24px);
    border-radius: 12px;
  }

  #chat-body {
    flex-direction: column;
  }

  #chat-sidebar {
    width: 100%;
    max-height: 120px;
    border-right: none;
    border-bottom: 1px solid var(--glass-border);
  }

  #online-users-list {
    flex-direction: row;
    overflow-x: auto;
    padding: 8px 16px;
    gap: 8px;
  }

  #online-users-list li {
    white-space: nowrap;
    padding: 6px 12px;
  }

  #chat-messages {
    padding: 16px;
  }

  .msg-wrapper {
    max-width: 85%;
  }

  #message-form {
    padding: 12px 16px;
  }
}