/* ═══════════════════════════════════════════════
   Nas Digital Chatbot — Premium Dark Theme
   ═══════════════════════════════════════════════ */

:root {
  --nasc-gold: #c9a227;
  --nasc-gold-light: #e8d48b;
  --nasc-gold-dim: #8a7a50;
  --nasc-bg: #0a0a0a;
  --nasc-surface: #111111;
  --nasc-surface-raised: #1a1a1a;
  --nasc-border: rgba(201, 162, 39, 0.1);
  --nasc-border-strong: rgba(201, 162, 39, 0.18);
  --nasc-text: #e8e0d0;
  --nasc-text-muted: #6b6055;
  --nasc-text-dim: #4a443a;
  --nasc-radius: 16px;
  --nasc-radius-sm: 10px;
  --nasc-radius-full: 999px;
  --nasc-shadow: 0 8px 40px rgba(0, 0, 0, 0.6);
  --nasc-transition: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

#nascBotWidget *,
#nascBotWidget *::before,
#nascBotWidget *::after {
  box-sizing: border-box;
}

#nascBotWidget {
  position: fixed;
  bottom: 0;
  right: 0;
  z-index: 2147483647;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  pointer-events: none;
}

#nascBotWidget > * {
  pointer-events: auto;
}

/* ═══════════════════ BUTTON ═══════════════════ */

.nasc-btn-wrap {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 2147483647;
}

.nasc-chat-btn {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  border: none;
  background: linear-gradient(135deg, var(--nasc-gold) 0%, #a07c1a 100%);
  color: #0a0a0a;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  position: relative;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  box-shadow: 0 4px 24px rgba(201, 162, 39, 0.3);
}

.nasc-chat-btn::before {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(201, 162, 39, 0.3), transparent 60%);
  animation: nascPulse 2.5s ease-in-out infinite;
  z-index: -1;
}

@keyframes nascPulse {
  0%, 100% { opacity: 0.4; transform: scale(1); }
  50% { opacity: 0.8; transform: scale(1.1); }
}

.nasc-chat-btn:hover {
  transform: scale(1.08);
  box-shadow: 0 6px 32px rgba(201, 162, 39, 0.45);
}

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

.nasc-btn-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.2s ease;
}

.nasc-btn-close {
  display: none;
}

.nasc-chat-btn.is-active .nasc-btn-open {
  display: none;
}

.nasc-chat-btn.is-active .nasc-btn-close {
  display: flex;
}

/* ═══════════════════ WINDOW ═══════════════════ */

.nasc-chat-window {
  position: fixed;
  bottom: 92px;
  right: 24px;
  width: 380px;
  height: 620px;
  max-height: calc(100vh - 120px);
  background: var(--nasc-bg);
  border-radius: var(--nasc-radius);
  box-shadow: var(--nasc-shadow), 0 0 0 1px var(--nasc-border-strong);
  display: none;
  flex-direction: column;
  overflow: hidden;
  transform-origin: bottom right;
  animation: nascWinIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.nasc-chat-window.is-open {
  display: flex;
}

@keyframes nascWinIn {
  from {
    opacity: 0;
    transform: scale(0.9) translateY(16px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

/* ═══════════════════ HEADER ═══════════════════ */

.nasc-chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 18px 12px;
  background: var(--nasc-surface);
  border-bottom: 1px solid var(--nasc-border);
  flex-shrink: 0;
  position: relative;
}

.nasc-chat-header::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 18px;
  right: 18px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--nasc-gold), transparent);
  opacity: 0.3;
}

.nasc-header-left {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.nasc-header-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  flex-shrink: 0;
  overflow: hidden;
  background: linear-gradient(135deg, var(--nasc-gold), #a07c1a);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid rgba(201, 162, 39, 0.2);
}

.nasc-header-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.nasc-header-avatar svg {
  color: #0a0a0a;
}

.nasc-header-info {
  min-width: 0;
}

.nasc-header-name {
  font-size: 15px;
  font-weight: 700;
  color: var(--nasc-gold-light);
  letter-spacing: 0.3px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.3;
}

.nasc-header-status {
  font-size: 12px;
  color: var(--nasc-text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
  line-height: 1;
  margin-top: 2px;
}

.nasc-header-status::before {
  content: '';
  width: 6px;
  height: 6px;
  background: #22c55e;
  border-radius: 50%;
  flex-shrink: 0;
  animation: nascOnline 2s ease-in-out infinite;
}

@keyframes nascOnline {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.nasc-header-btn {
  width: 32px;
  height: 32px;
  border-radius: var(--nasc-radius-sm);
  border: none;
  background: transparent;
  color: var(--nasc-text-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.nasc-header-btn:hover {
  background: rgba(201, 162, 39, 0.08);
  color: var(--nasc-gold);
}

/* ═══════════════════ MESSAGES ═══════════════════ */

.nasc-chat-messages {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 20px 16px 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  scroll-behavior: smooth;
  background: var(--nasc-bg);
  scrollbar-width: thin;
  scrollbar-color: rgba(201, 162, 39, 0.12) transparent;
}

.nasc-chat-messages::-webkit-scrollbar {
  width: 4px;
}

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

.nasc-chat-messages::-webkit-scrollbar-thumb {
  background: rgba(201, 162, 39, 0.12);
  border-radius: 4px;
}

.nasc-msg-divider {
  height: 8px;
}

.nasc-message {
  display: flex;
  gap: 8px;
  max-width: 88%;
  animation: nascMsgIn 0.25s ease;
}

@keyframes nascMsgIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.nasc-message.is-user {
  align-self: flex-end;
  flex-direction: row-reverse;
}

.nasc-message.is-bot {
  align-self: flex-start;
}

.nasc-msg-avatar {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 6px;
}

.nasc-message.is-bot .nasc-msg-avatar {
  background: var(--nasc-surface-raised);
  border: 1px solid var(--nasc-border);
  color: var(--nasc-gold);
}

.nasc-message.is-user .nasc-msg-avatar {
  background: rgba(201, 162, 39, 0.08);
  border: 1px solid var(--nasc-border);
  color: var(--nasc-gold);
}

.nasc-msg-body {
  display: flex;
  flex-direction: column;
  gap: 2px;
  max-width: calc(100% - 34px);
}

.nasc-msg-bubble {
  padding: 10px 16px;
  border-radius: 16px;
  font-size: 14px;
  line-height: 1.55;
  word-wrap: break-word;
  overflow-wrap: break-word;
  color: var(--nasc-text);
}

.nasc-message.is-bot .nasc-msg-bubble {
  background: var(--nasc-surface);
  border: 1px solid var(--nasc-border);
  border-bottom-left-radius: 4px;
}

.nasc-message.is-user .nasc-msg-bubble {
  background: rgba(201, 162, 39, 0.06);
  border: 1px solid rgba(201, 162, 39, 0.1);
  border-bottom-right-radius: 4px;
}

.nasc-msg-bubble strong {
  color: var(--nasc-gold-light);
  font-weight: 600;
}

.nasc-msg-bubble em {
  color: var(--nasc-gold-dim);
}

.nasc-msg-bubble code {
  background: rgba(255, 255, 255, 0.04);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 13px;
  color: var(--nasc-gold);
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
}

.nasc-msg-bubble a {
  color: var(--nasc-gold);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.nasc-msg-bubble a:hover {
  color: var(--nasc-gold-light);
}

.nasc-msg-time {
  font-size: 11px;
  color: var(--nasc-text-dim);
  padding: 0 4px;
}

.nasc-message.is-user .nasc-msg-time {
  text-align: right;
}

/* ─── Welcome / System ─── */

.nasc-system-msg {
  text-align: center;
  padding: 20px 28px;
  font-size: 13px;
  color: var(--nasc-text-muted);
  line-height: 1.6;
  letter-spacing: 0.2px;
}

/* ═══════════════════ BOT JOIN GAP ═══════════════════ */

.nasc-bot-join {
  height: 12px;
}

/* ═══════════════════ TYPING ═══════════════════ */

.nasc-typing {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  padding: 0 16px 4px;
  align-self: flex-start;
  animation: nascMsgIn 0.2s ease;
}

.nasc-typing-avatar {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--nasc-surface-raised);
  border: 1px solid var(--nasc-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--nasc-gold);
  flex-shrink: 0;
  margin-bottom: 4px;
}

.nasc-typing-dots {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 12px 20px;
  background: var(--nasc-surface);
  border: 1px solid var(--nasc-border);
  border-radius: 16px;
  border-bottom-left-radius: 4px;
}

.nasc-typing-dots span {
  width: 7px;
  height: 7px;
  background: var(--nasc-text-dim);
  border-radius: 50%;
  animation: nascTyping 1.4s ease-in-out infinite;
}

.nasc-typing-dots span:nth-child(2) {
  animation-delay: 0.2s;
}

.nasc-typing-dots span:nth-child(3) {
  animation-delay: 0.4s;
}

@keyframes nascTyping {
  0%, 60%, 100% {
    transform: translateY(0);
    background: var(--nasc-text-dim);
  }
  30% {
    transform: translateY(-6px);
    background: var(--nasc-gold);
  }
}

/* ═══════════════════ SUGGESTIONS ═══════════════════ */

.nasc-suggestions {
  padding: 6px 0 10px;
  flex-shrink: 0;
  overflow: hidden;
  position: relative;
  mask-image: linear-gradient(90deg, transparent 0, #000 30px, #000 calc(100% - 30px), transparent 100%);
  -webkit-mask-image: linear-gradient(90deg, transparent 0, #000 30px, #000 calc(100% - 30px), transparent 100%);
}

.nasc-suggestions-track {
  display: flex;
  gap: 8px;
  width: max-content;
  animation: nascMarquee 30s linear infinite;
}

.nasc-suggestions:hover .nasc-suggestions-track {
  animation-play-state: paused;
}

@keyframes nascMarquee {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(-50%);
  }
}

.nasc-suggestion {
  flex-shrink: 0;
  padding: 7px 18px;
  border-radius: var(--nasc-radius-full);
  border: 1px solid var(--nasc-border);
  background: transparent;
  color: var(--nasc-text-muted);
  font-family: inherit;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
  line-height: 1.4;
  letter-spacing: 0.2px;
}

.nasc-suggestion:hover {
  border-color: rgba(201, 162, 39, 0.3);
  background: rgba(201, 162, 39, 0.05);
  color: var(--nasc-gold);
  transform: translateY(-1px);
}

.nasc-suggestion:active {
  transform: translateY(0);
}

/* ═══════════════════ INPUT ═══════════════════ */

.nasc-chat-input-area {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px 14px;
  background: var(--nasc-bg);
  border-top: 1px solid var(--nasc-border);
  flex-shrink: 0;
}

.nasc-chat-input {
  flex: 1;
  padding: 11px 18px;
  border-radius: var(--nasc-radius-full);
  border: 1px solid var(--nasc-border);
  background: var(--nasc-surface);
  color: var(--nasc-text);
  font-family: inherit;
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  min-width: 0;
  line-height: 1.4;
}

.nasc-chat-input::placeholder {
  color: var(--nasc-text-dim);
}

.nasc-chat-input:focus {
  border-color: rgba(201, 162, 39, 0.25);
  box-shadow: 0 0 0 3px rgba(201, 162, 39, 0.06);
}

.nasc-chat-send {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: none;
  background: linear-gradient(135deg, var(--nasc-gold) 0%, #a07c1a 100%);
  color: #0a0a0a;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  flex-shrink: 0;
  box-shadow: 0 2px 10px rgba(201, 162, 39, 0.2);
}

.nasc-chat-send:hover {
  transform: scale(1.05);
  box-shadow: 0 4px 16px rgba(201, 162, 39, 0.35);
}

.nasc-chat-send:active {
  transform: scale(0.92);
}

.nasc-chat-send:disabled {
  opacity: 0.2;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* ═══════════════════ HUMAN BUTTON ═══════════════════ */

.nasc-human-wrap {
  padding: 2px 16px 12px;
  flex-shrink: 0;
}

.nasc-human-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 14px;
  border-radius: var(--nasc-radius-sm);
  border: 1px solid var(--nasc-border);
  background: rgba(201, 162, 39, 0.02);
  color: var(--nasc-text-muted);
  font-family: inherit;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s ease;
  width: 100%;
  line-height: 1.4;
  letter-spacing: 0.2px;
}

.nasc-human-btn:hover {
  border-color: rgba(201, 162, 39, 0.25);
  background: rgba(201, 162, 39, 0.06);
  color: var(--nasc-gold);
}

.nasc-human-btn svg {
  flex-shrink: 0;
  color: var(--nasc-text-dim);
}

.nasc-human-btn:hover svg {
  color: var(--nasc-gold);
}

/* ═══════════════════ CONTACT FORM ═══════════════════ */

.nasc-contact-form {
  margin: 8px 0;
  padding: 18px;
  background: var(--nasc-surface);
  border: 1px solid var(--nasc-border);
  border-radius: 14px;
  animation: nascMsgIn 0.25s ease;
}

.nasc-cf-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--nasc-gold-light);
  margin-bottom: 4px;
  letter-spacing: 0.3px;
}

.nasc-cf-sub {
  font-size: 12px;
  color: var(--nasc-text-muted);
  margin-bottom: 14px;
  line-height: 1.5;
}

.nasc-cf-field {
  margin-bottom: 10px;
}

.nasc-cf-input {
  width: 100%;
  padding: 10px 14px;
  border-radius: var(--nasc-radius-sm);
  border: 1px solid var(--nasc-border);
  background: var(--nasc-bg);
  color: var(--nasc-text);
  font-family: inherit;
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  box-sizing: border-box;
}

.nasc-cf-input::placeholder {
  color: var(--nasc-text-dim);
}

.nasc-cf-input:focus {
  border-color: rgba(201, 162, 39, 0.25);
  box-shadow: 0 0 0 3px rgba(201, 162, 39, 0.06);
}

.nasc-cf-actions {
  display: flex;
  gap: 8px;
  margin-top: 4px;
}

.nasc-cf-btn {
  flex: 1;
  padding: 10px;
  border-radius: var(--nasc-radius-sm);
  border: none;
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  letter-spacing: 0.3px;
}

.nasc-cf-cancel {
  background: transparent;
  border: 1px solid var(--nasc-border);
  color: var(--nasc-text-muted);
}

.nasc-cf-cancel:hover {
  border-color: rgba(201, 162, 39, 0.2);
  color: var(--nasc-gold);
}

.nasc-cf-submit {
  background: linear-gradient(135deg, var(--nasc-gold) 0%, #a07c1a 100%);
  color: #0a0a0a;
  box-shadow: 0 2px 10px rgba(201, 162, 39, 0.2);
}

.nasc-cf-submit:hover {
  box-shadow: 0 4px 16px rgba(201, 162, 39, 0.35);
  transform: translateY(-1px);
}

.nasc-cf-submit:disabled,
.nasc-cf-cancel:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* ═══════════════════ RESPONSIVE ═══════════════════ */

@media (max-width: 480px) {
  .nasc-btn-wrap {
    bottom: 16px;
    right: 16px;
  }

  .nasc-chat-btn {
    width: 56px;
    height: 56px;
  }

  .nasc-chat-window {
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    height: 100%;
    max-height: none;
    border-radius: 0;
    box-shadow: none;
    animation: nascWinMobileIn 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  }

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

  .nasc-chat-window.is-open ~ .nasc-btn-wrap,
  .nasc-chat-window.is-open + .nasc-btn-wrap {
    display: none;
  }

  .nasc-chat-messages {
    padding: 16px 12px 10px;
  }

  .nasc-message {
    max-width: 92%;
  }

  .nasc-suggestions {
    padding: 4px 0 8px;
  }

  .nasc-chat-input-area {
    padding: 6px 12px 12px;
  }
}

@media (min-width: 481px) and (max-width: 768px) {
  .nasc-chat-window {
    width: 360px;
    height: 540px;
  }
}