/* ============================================================
   CHATBOT.SAIGONCACANH.COM — STYLES
   Design: Dark Ocean Premium Theme
   Colors: #0a0f1e (bg) | #446084 (brand) | #00d4ff (accent)
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

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

:root {
  --bg-deep:      #050b18;
  --bg-dark:      #0a1628;
  --bg-card:      rgba(255,255,255,0.05);
  --bg-card-hover:rgba(255,255,255,0.08);
  --brand:        #446084;
  --brand-light:  #5a80a8;
  --accent:       #00c8ff;
  --accent-glow:  rgba(0,200,255,0.25);
  --gold:         #f5c842;
  --success:      #10d47e;
  --danger:       #ff5252;
  --text-primary: #eaf0fb;
  --text-secondary:#8fa5bf;
  --text-muted:   #546a80;
  --border:       rgba(255,255,255,0.08);
  --border-bright:rgba(0,200,255,0.25);
  --glass:        rgba(10,22,40,0.7);
  --radius-sm:    8px;
  --radius-md:    14px;
  --radius-lg:    20px;
  --radius-xl:    28px;
  --shadow-sm:    0 2px 12px rgba(0,0,0,0.3);
  --shadow-md:    0 8px 32px rgba(0,0,0,0.5);
  --shadow-glow:  0 0 30px rgba(0,200,255,0.15);
  --transition:   0.25s cubic-bezier(0.4,0,0.2,1);
  --font:         'Inter', -apple-system, sans-serif;
}

html { height: 100%; scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg-deep);
  color: var(--text-primary);
  height: 100%;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ─── OCEAN BACKGROUND ─────────────────────────────────────── */
.ocean-bg {
  position: fixed; inset: 0; z-index: 0;
  background:
    radial-gradient(ellipse 80% 60% at 20% 80%, rgba(0,80,160,0.25) 0%, transparent 60%),
    radial-gradient(ellipse 60% 80% at 80% 20%, rgba(0,40,100,0.3) 0%, transparent 60%),
    linear-gradient(160deg, #050b18 0%, #071529 40%, #0a1e3a 70%, #060d1a 100%);
  overflow: hidden;
}

/* Bubbles */
.bubbles { position: absolute; inset: 0; pointer-events: none; }
.bubble {
  position: absolute;
  bottom: -60px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, rgba(0,200,255,0.4), rgba(0,100,200,0.1));
  border: 1px solid rgba(0,200,255,0.2);
  animation: floatUp linear infinite;
  opacity: 0;
}
@keyframes floatUp {
  0%   { transform: translateY(0) translateX(0) scale(1); opacity: 0; }
  10%  { opacity: 0.6; }
  90%  { opacity: 0.2; }
  100% { transform: translateY(-110vh) translateX(30px) scale(0.5); opacity: 0; }
}

/* Fish swimming */
.fish-container { position: absolute; inset: 0; pointer-events: none; }
.fish {
  position: absolute;
  font-size: 22px;
  animation: swimAcross linear infinite;
  filter: drop-shadow(0 0 6px rgba(0,200,255,0.5));
  opacity: 0.6;
}
.fish.flipped { transform: scaleX(-1); }
@keyframes swimAcross {
  0%   { transform: translateX(-80px); opacity: 0; }
  5%   { opacity: 0.7; }
  95%  { opacity: 0.7; }
  100% { transform: translateX(calc(100vw + 80px)); opacity: 0; }
}

/* ─── LAYOUT ────────────────────────────────────────────────── */
.app-wrapper {
  position: relative; z-index: 1;
  display: flex; flex-direction: column;
  height: 100vh; height: 100dvh;
  max-width: 820px;
  margin: 0 auto;
}

/* ─── HEADER ────────────────────────────────────────────────── */
.chat-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 20px;
  background: rgba(5,11,24,0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  position: relative;
  z-index: 10;
}

.header-left { display: flex; align-items: center; gap: 14px; }

.bot-avatar {
  width: 44px; height: 44px;
  background: linear-gradient(135deg, var(--brand), var(--accent));
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 22px;
  box-shadow: 0 0 16px var(--accent-glow);
  position: relative; flex-shrink: 0;
}
.bot-avatar::after {
  content: '';
  position: absolute; bottom: 1px; right: 1px;
  width: 11px; height: 11px;
  background: var(--success);
  border-radius: 50%;
  border: 2px solid var(--bg-deep);
}

.bot-info .bot-name {
  font-size: 15px; font-weight: 600;
  color: var(--text-primary);
  letter-spacing: 0.01em;
}
.bot-info .bot-status {
  font-size: 11px; color: var(--success);
  display: flex; align-items: center; gap: 4px; margin-top: 1px;
}
.bot-info .bot-status::before {
  content: ''; width: 6px; height: 6px;
  background: var(--success); border-radius: 50%;
  animation: pulse 2s ease infinite;
}
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:0.4} }

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

.btn-zalo {
  display: flex; align-items: center; gap: 6px;
  padding: 7px 14px;
  background: linear-gradient(135deg, #0068ff, #0050cc);
  color: white; text-decoration: none;
  border-radius: 20px;
  font-size: 12px; font-weight: 600;
  transition: var(--transition);
  box-shadow: 0 4px 12px rgba(0,104,255,0.4);
  white-space: nowrap;
}
.btn-zalo:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(0,104,255,0.5);
}

.btn-hotline {
  display: flex; align-items: center; gap: 5px;
  padding: 7px 12px;
  background: rgba(255,255,255,0.07);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  text-decoration: none; border-radius: 20px;
  font-size: 11px;
  transition: var(--transition);
}
.btn-hotline:hover { background: rgba(255,255,255,0.12); color: var(--text-primary); }

.btn-icon-header {
  width: 34px; height: 34px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; font-size: 14px;
  transition: var(--transition);
}
.btn-icon-header:hover { background: rgba(255,255,255,0.12); color: var(--text-primary); }

/* ─── WELCOME SCREEN ────────────────────────────────────────── */
.welcome-screen {
  flex: 1; display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  padding: 30px 20px; text-align: center;
  gap: 24px; overflow-y: auto;
}

.welcome-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 16px;
  background: rgba(0,200,255,0.1);
  border: 1px solid var(--border-bright);
  border-radius: 20px;
  font-size: 12px; color: var(--accent);
  font-weight: 500;
}

.welcome-screen h1 {
  font-size: clamp(22px, 5vw, 32px);
  font-weight: 700; line-height: 1.2;
  background: linear-gradient(135deg, #eaf0fb 0%, var(--accent) 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}

.welcome-screen p {
  font-size: 14px; color: var(--text-secondary);
  line-height: 1.7; max-width: 480px;
}

.welcome-features {
  display: flex; gap: 12px; flex-wrap: wrap;
  justify-content: center; max-width: 500px;
}
.feature-chip {
  display: flex; align-items: center; gap: 6px;
  padding: 8px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  font-size: 12px; color: var(--text-secondary);
  transition: var(--transition);
}
.feature-chip:hover { border-color: var(--border-bright); color: var(--text-primary); }

.welcome-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 10px; width: 100%; max-width: 560px;
}
.suggest-card {
  display: flex; align-items: center; gap: 10px;
  padding: 12px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  cursor: pointer; text-align: left;
  transition: var(--transition); color: var(--text-primary);
  font-size: 13px; font-family: var(--font);
}
.suggest-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-bright);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}
.suggest-card span.icon { font-size: 20px; flex-shrink: 0; }

/* ─── MESSAGES AREA ─────────────────────────────────────────── */
.messages-area {
  flex: 1; overflow-y: auto; overflow-x: hidden;
  padding: 20px 16px 10px;
  display: flex; flex-direction: column; gap: 6px;
  scroll-behavior: smooth;
}
.messages-area::-webkit-scrollbar { width: 4px; }
.messages-area::-webkit-scrollbar-track { background: transparent; }
.messages-area::-webkit-scrollbar-thumb { background: var(--brand); border-radius: 4px; }

/* Day divider */
.day-divider {
  text-align: center; margin: 12px 0;
  font-size: 11px; color: var(--text-muted);
  position: relative;
}
.day-divider::before, .day-divider::after {
  content: ''; position: absolute; top: 50%;
  width: calc(50% - 50px); height: 1px;
  background: var(--border);
}
.day-divider::before { left: 0; }
.day-divider::after  { right: 0; }

/* Message row */
.msg-row {
  display: flex; gap: 10px; max-width: 85%;
  animation: msgIn 0.3s cubic-bezier(0.4,0,0.2,1);
}
@keyframes msgIn {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}
.msg-row.user { align-self: flex-end; flex-direction: row-reverse; }
.msg-row.bot  { align-self: flex-start; }

.msg-avatar {
  width: 32px; height: 32px;
  border-radius: 50%; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 15px; align-self: flex-end;
}
.msg-row.bot .msg-avatar {
  background: linear-gradient(135deg, var(--brand), var(--accent));
  box-shadow: 0 0 10px var(--accent-glow);
}
.msg-row.user .msg-avatar {
  background: linear-gradient(135deg, #3a4a6b, #2a3550);
  border: 1px solid rgba(255,255,255,0.1);
}

.msg-bubble {
  padding: 12px 16px;
  border-radius: var(--radius-lg);
  font-size: 14px; line-height: 1.65;
  word-break: break-word; position: relative;
}
.msg-row.bot .msg-bubble {
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border);
  border-bottom-left-radius: 4px;
  color: var(--text-primary);
}
.msg-row.user .msg-bubble {
  background: linear-gradient(135deg, var(--brand) 0%, #2e5070 100%);
  border: 1px solid rgba(68,96,132,0.5);
  border-bottom-right-radius: 4px;
  color: white;
}

/* Bubble text formatting */
.msg-bubble strong { color: var(--accent); font-weight: 600; }
.msg-bubble em { font-style: italic; color: var(--text-secondary); }
.msg-bubble a { color: var(--accent); text-decoration: underline; }
.msg-bubble a:hover { color: white; }
.msg-bubble ul, .msg-bubble ol { padding-left: 18px; margin: 6px 0; }
.msg-bubble li { margin-bottom: 4px; }
.msg-bubble code {
  background: rgba(0,0,0,0.3); padding: 2px 6px;
  border-radius: 4px; font-size: 12px; color: var(--accent);
}

/* Article link card */
.article-card {
  margin-top: 10px; padding: 10px 12px;
  background: rgba(0,200,255,0.05);
  border: 1px solid rgba(0,200,255,0.2);
  border-radius: var(--radius-md);
  display: flex; align-items: center; gap: 8px;
}
.article-card a {
  font-size: 12px; color: var(--accent);
  text-decoration: none; flex: 1; line-height: 1.4;
}
.article-card a:hover { text-decoration: underline; }
.article-card .read-icon { font-size: 16px; flex-shrink: 0; }

/* Image in message */
.msg-image {
  max-width: 220px; border-radius: var(--radius-md);
  margin-bottom: 8px; display: block;
  border: 1px solid var(--border);
}

/* Message actions */
.msg-actions {
  display: flex; gap: 6px;
  margin-top: 6px; justify-content: flex-end;
}
.msg-action-btn {
  background: rgba(255,255,255,0.06); border: 1px solid var(--border);
  color: var(--text-muted); font-size: 11px;
  padding: 3px 8px; border-radius: 20px; cursor: pointer;
  transition: var(--transition); display: flex; align-items: center; gap: 4px;
}
.msg-action-btn:hover { background: rgba(255,255,255,0.12); color: var(--text-primary); }

/* Timestamp */
.msg-time {
  font-size: 10px; color: var(--text-muted);
  margin-top: 3px; padding: 0 4px;
}
.msg-row.user .msg-time { text-align: right; }

/* ─── TYPING INDICATOR ──────────────────────────────────────── */
.typing-indicator .msg-bubble {
  display: flex; align-items: center; gap: 5px;
  padding: 14px 18px; min-width: 60px;
}
.typing-dot {
  width: 7px; height: 7px;
  background: var(--accent);
  border-radius: 50%;
  animation: typingBounce 1.4s ease infinite;
}
.typing-dot:nth-child(2) { animation-delay: 0.2s; }
.typing-dot:nth-child(3) { animation-delay: 0.4s; }
@keyframes typingBounce {
  0%,60%,100%{ transform: translateY(0); opacity: 0.5; }
  30%        { transform: translateY(-8px); opacity: 1; }
}

/* ─── QUICK REPLIES ─────────────────────────────────────────── */
.quick-replies-bar {
  display: flex; gap: 8px; padding: 8px 16px 2px;
  overflow-x: auto; flex-shrink: 0;
}
.quick-replies-bar::-webkit-scrollbar { display: none; }
.qr-chip {
  display: flex; align-items: center; gap: 5px;
  padding: 6px 12px; white-space: nowrap;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px; cursor: pointer;
  font-size: 12px; color: var(--text-secondary);
  font-family: var(--font);
  transition: var(--transition);
}
.qr-chip:hover {
  border-color: var(--border-bright);
  color: var(--text-primary);
  background: var(--bg-card-hover);
}

/* ─── INPUT AREA ────────────────────────────────────────────── */
.input-area {
  padding: 12px 16px 16px; flex-shrink: 0;
  background: rgba(5,11,24,0.85);
  backdrop-filter: blur(20px);
  border-top: 1px solid var(--border);
}

.input-row {
  display: flex; align-items: flex-end; gap: 10px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 8px 8px 8px 14px;
  transition: var(--transition);
}
.input-row:focus-within {
  border-color: var(--border-bright);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

#user-input {
  flex: 1; background: transparent; border: none; outline: none;
  color: var(--text-primary); font-family: var(--font);
  font-size: 14px; line-height: 1.5;
  resize: none; max-height: 120px; min-height: 22px;
  padding: 4px 0;
}
#user-input::placeholder { color: var(--text-muted); }
#user-input::-webkit-scrollbar { width: 3px; }
#user-input::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

.input-actions { display: flex; align-items: flex-end; gap: 6px; flex-shrink: 0; }

.btn-attach {
  width: 36px; height: 36px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border);
  border-radius: 50%; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  font-size: 15px; transition: var(--transition); color: var(--text-secondary);
  position: relative;
}
.btn-attach:hover { background: rgba(255,255,255,0.12); color: var(--accent); }
.btn-attach input[type="file"] {
  position: absolute; inset: 0; opacity: 0; cursor: pointer; font-size: 0;
}

.btn-send {
  width: 40px; height: 40px;
  background: linear-gradient(135deg, var(--brand), var(--accent));
  border: none; border-radius: 50%; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: var(--transition); flex-shrink: 0;
  box-shadow: 0 4px 14px rgba(0,200,255,0.3);
}
.btn-send:hover { transform: scale(1.08); box-shadow: 0 6px 20px rgba(0,200,255,0.45); }
.btn-send:active { transform: scale(0.96); }
.btn-send:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }
.btn-send svg { color: white; }

.input-hint {
  text-align: center; font-size: 11px; color: var(--text-muted);
  margin-top: 8px;
}
.input-hint a { color: var(--brand-light); text-decoration: none; }
.input-hint a:hover { color: var(--accent); }

/* Preview image before sending */
.img-preview-wrap {
  padding: 8px 16px 0;
  display: none; flex-shrink: 0;
}
.img-preview-inner {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 8px 10px;
}
.img-preview-inner img { height: 60px; border-radius: 6px; }
.btn-remove-img {
  background: var(--danger); border: none; color: white;
  width: 22px; height: 22px; border-radius: 50%;
  cursor: pointer; font-size: 12px; display: flex;
  align-items: center; justify-content: center;
}

/* ─── API KEY SETUP OVERLAY ─────────────────────────────────── */
.setup-overlay {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(0,0,0,0.85);
  backdrop-filter: blur(12px);
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
}
.setup-box {
  background: linear-gradient(160deg, #0d1e35, #071525);
  border: 1px solid var(--border-bright);
  border-radius: var(--radius-xl);
  padding: 36px 32px;
  max-width: 460px; width: 100%;
  box-shadow: var(--shadow-md), var(--shadow-glow);
}
.setup-box h2 {
  font-size: 22px; font-weight: 700;
  background: linear-gradient(135deg, #eaf0fb, var(--accent));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text; margin-bottom: 10px;
}
.setup-box p { font-size: 13px; color: var(--text-secondary); line-height: 1.6; margin-bottom: 20px; }
.setup-steps {
  display: flex; flex-direction: column; gap: 10px;
  margin-bottom: 20px;
}
.setup-step {
  display: flex; align-items: flex-start; gap: 12px;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-md); padding: 10px 14px;
}
.step-num {
  width: 24px; height: 24px; background: var(--brand);
  border-radius: 50%; display: flex; align-items: center;
  justify-content: center; font-size: 11px; font-weight: 700;
  flex-shrink: 0; margin-top: 1px;
}
.step-text { font-size: 13px; color: var(--text-secondary); line-height: 1.5; }
.step-text a { color: var(--accent); }

.api-input-wrap { position: relative; margin-bottom: 16px; }
.api-input-wrap input {
  width: 100%; padding: 12px 50px 12px 14px;
  background: rgba(0,0,0,0.3);
  border: 1px solid var(--border);
  border-radius: var(--radius-md); color: var(--text-primary);
  font-family: var(--font); font-size: 13px;
  outline: none; transition: var(--transition);
  letter-spacing: 0.03em;
}
.api-input-wrap input:focus { border-color: var(--border-bright); box-shadow: 0 0 0 3px var(--accent-glow); }
.btn-toggle-key {
  position: absolute; right: 12px; top: 50%; transform: translateY(-50%);
  background: none; border: none; color: var(--text-muted); cursor: pointer;
  font-size: 16px;
}

.btn-activate {
  width: 100%; padding: 13px;
  background: linear-gradient(135deg, var(--brand), var(--accent));
  border: none; border-radius: var(--radius-md);
  color: white; font-family: var(--font); font-size: 14px; font-weight: 600;
  cursor: pointer; transition: var(--transition);
  box-shadow: 0 4px 16px rgba(0,200,255,0.3);
}
.btn-activate:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,200,255,0.4); }

.setup-note { font-size: 11px; color: var(--text-muted); margin-top: 12px; text-align: center; line-height: 1.5; }
.setup-note a { color: var(--brand-light); }

/* ─── TOAST NOTIFICATION ────────────────────────────────────── */
.toast {
  position: fixed; top: 20px; left: 50%; transform: translateX(-50%);
  z-index: 999; padding: 10px 20px;
  background: rgba(10,22,40,0.95); border: 1px solid var(--border-bright);
  border-radius: 30px; font-size: 13px;
  color: var(--text-primary); box-shadow: var(--shadow-md);
  animation: toastIn 0.3s ease, toastOut 0.3s ease 2.5s forwards;
  pointer-events: none; white-space: nowrap;
}
@keyframes toastIn  { from{opacity:0;transform:translateX(-50%) translateY(-10px)} to{opacity:1;transform:translateX(-50%) translateY(0)} }
@keyframes toastOut { from{opacity:1} to{opacity:0} }

/* ─── SCROLLBAR GLOBAL ──────────────────────────────────────── */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(68,96,132,0.5); border-radius: 4px; }

/* ─── RESPONSIVE ────────────────────────────────────────────── */
@media (max-width: 600px) {
  .chat-header { padding: 10px 14px; }
  .btn-hotline { display: none; }
  .bot-avatar { width: 38px; height: 38px; font-size: 18px; }
  .welcome-grid { grid-template-columns: 1fr 1fr; }
  .messages-area { padding: 14px 12px 6px; }
  .input-area { padding: 10px 12px 14px; }
  .setup-box { padding: 24px 18px; }
}
@media (max-width: 360px) {
  .welcome-grid { grid-template-columns: 1fr; }
  .btn-zalo span { display: none; }
}

/* ─── STREAMING CURSOR (V4.2) ──────────────────────────────── */
.streaming-cursor {
  color: var(--accent);
  font-weight: 700;
  animation: blink-cursor 0.8s step-end infinite;
}
@keyframes blink-cursor {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}