/* ═══════════════════════════════════════════════════════════
   UNC Coin — style.css
   Dark glassmorphism trading dashboard · Syne + DM Mono
════════════════════════════════════════════════════════════ */

/* ── Reset + Root ────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:          #080c14;
  --bg-1:        #0d1220;
  --bg-2:        #111828;
  --glass:       rgba(255,255,255,0.04);
  --glass-brd:   rgba(255,255,255,0.08);
  --glass-hover: rgba(255,255,255,0.07);
  --text:        #e8edf5;
  --text-sub:    #7a8ba0;
  --text-dim:    #4a5568;
  --accent:      #00d4ff;
  --accent-dim:  rgba(0,212,255,0.15);
  --accent-glow: rgba(0,212,255,0.30);
  --green:       #00e676;
  --green-dim:   rgba(0,230,118,0.12);
  --red:         #ff4757;
  --red-dim:     rgba(255,71,87,0.12);
  --gold:        #ffd700;
  --radius:      14px;
  --radius-lg:   20px;
  --font:        'Syne', sans-serif;
  --mono:        'DM Mono', monospace;
  --nav-h:       60px;
  --transition:  0.22s ease;
}

html { scroll-behavior: smooth; }

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

/* ── Screens ─────────────────────────────────────────────── */
.screen { display: none; min-height: 100vh; }
.screen.active { display: flex; flex-direction: column; }

/* ── Glass Card ──────────────────────────────────────────── */
.glass-card {
  background: var(--glass);
  border: 1px solid var(--glass-brd);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

/* ═══════════════════════════════════════════════════════════
   LOGIN SCREEN
════════════════════════════════════════════════════════════ */
#login-screen {
  position: relative;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--bg);
}

.login-bg {
  position: absolute; inset: 0;
  pointer-events: none; z-index: 0;
  overflow: hidden;
}

.login-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.35;
  animation: orbFloat 8s ease-in-out infinite alternate;
}
.orb-1 { width: 500px; height: 500px; background: #00d4ff; top: -150px; left: -150px; }
.orb-2 { width: 400px; height: 400px; background: #7c3aed; bottom: -100px; right: -100px; animation-delay: 2s; }
.orb-3 { width: 300px; height: 300px; background: #00e676; top: 40%; left: 40%; animation-delay: 4s; }

@keyframes orbFloat {
  from { transform: translate(0, 0) scale(1); }
  to   { transform: translate(30px, 20px) scale(1.08); }
}

.grid-overlay {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(0,212,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,212,255,0.04) 1px, transparent 1px);
  background-size: 48px 48px;
}

.login-container {
  position: relative; z-index: 1;
  display: flex; flex-direction: column; align-items: center;
  gap: 32px; width: 100%; padding: 24px;
}

.login-logo { text-align: center; }
.logo-icon  { font-size: 3rem; display: block; margin-bottom: 8px; }
.logo-title {
  font-size: 2.6rem; font-weight: 800; letter-spacing: -1px;
  color: var(--text);
}
.logo-title span { color: var(--accent); }
.logo-sub  { color: var(--text-sub); font-size: 0.9rem; margin-top: 4px; letter-spacing: 0.08em; }

.login-card {
  width: 100%; max-width: 440px;
  padding: 36px 32px;
  animation: slideUp 0.5s cubic-bezier(.16,1,.3,1) both;
}
@keyframes slideUp {
  from { opacity:0; transform:translateY(30px); }
  to   { opacity:1; transform:translateY(0); }
}

.login-heading { font-size: 1.4rem; font-weight: 700; margin-bottom: 4px; }
.login-hint    { color: var(--text-sub); font-size: 0.83rem; margin-bottom: 28px; }

.form-group { margin-bottom: 18px; }
.form-group label {
  display: block; font-size: 0.78rem; font-weight: 600;
  color: var(--text-sub); text-transform: uppercase; letter-spacing: 0.07em;
  margin-bottom: 8px;
}
.form-group input {
  width: 100%; padding: 12px 16px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--glass-brd);
  border-radius: 10px;
  color: var(--text); font-family: var(--mono); font-size: 0.95rem;
  outline: none; transition: border var(--transition), box-shadow var(--transition);
}
.form-group input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}
.form-group input::placeholder { color: var(--text-dim); }

.form-error { color: var(--red); font-size: 0.83rem; min-height: 18px; margin-bottom: 14px; }

.btn-login {
  width: 100%; padding: 14px;
  background: linear-gradient(135deg, var(--accent), #0099cc);
  border: none; border-radius: 10px;
  color: #000; font-family: var(--font); font-size: 1rem; font-weight: 700;
  cursor: pointer; letter-spacing: 0.04em;
  transition: opacity var(--transition), transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 4px 24px var(--accent-glow);
}
.btn-login:hover { opacity: 0.9; transform: translateY(-1px); box-shadow: 0 8px 32px var(--accent-glow); }
.btn-login:active { transform: translateY(0); }
.btn-login:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

.login-perks {
  display: flex; justify-content: center; gap: 16px; flex-wrap: wrap;
  margin-top: 24px; color: var(--text-sub); font-size: 0.78rem;
}

/* ═══════════════════════════════════════════════════════════
   TOP NAV
════════════════════════════════════════════════════════════ */
.topnav {
  height: var(--nav-h);
  display: flex; align-items: center;
  padding: 0 20px; gap: 16px;
  background: rgba(8,12,20,0.85);
  border-bottom: 1px solid var(--glass-brd);
  backdrop-filter: blur(20px);
  position: sticky; top: 0; z-index: 100;
  flex-wrap: wrap;
}

.topnav-brand {
  display: flex; align-items: center; gap: 8px;
  min-width: 120px;
}
.logo-icon-sm { font-size: 1.4rem; }
.brand-text { font-size: 1rem; font-weight: 600; white-space: nowrap; }
.brand-text strong { color: var(--accent); }

.nav-tabs {
  display: flex; gap: 4px;
  background: var(--glass);
  border: 1px solid var(--glass-brd);
  border-radius: 10px;
  padding: 4px;
  flex: 1; max-width: 420px;
}
.nav-tab {
  flex: 1;
  padding: 7px 12px;
  background: transparent;
  border: none; border-radius: 7px;
  color: var(--text-sub); font-family: var(--font);
  font-size: 0.82rem; font-weight: 600; cursor: pointer;
  transition: background var(--transition), color var(--transition);
  white-space: nowrap;
}
.nav-tab:hover { color: var(--text); background: var(--glass-hover); }
.nav-tab.active {
  background: var(--accent);
  color: #000;
}

.topnav-right {
  display: flex; align-items: center; gap: 12px;
  margin-left: auto;
}

.market-status { display: flex; align-items: center; gap: 6px; }
.status-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--text-dim);
  transition: background 0.3s;
}
.status-dot.live {
  background: var(--green);
  box-shadow: 0 0 6px var(--green);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%,100% { box-shadow: 0 0 4px var(--green); }
  50%      { box-shadow: 0 0 12px var(--green); }
}
.status-text { font-size: 0.72rem; color: var(--text-sub); font-family: var(--mono); white-space: nowrap; }

.user-badge {
  display: flex; align-items: center; gap: 6px;
  background: var(--glass); border: 1px solid var(--glass-brd);
  border-radius: 8px; padding: 5px 12px;
  font-size: 0.82rem; font-weight: 600;
}
.user-avatar { font-size: 1rem; }

.btn-logout {
  background: var(--red-dim); border: 1px solid rgba(255,71,87,0.3);
  color: var(--red); padding: 7px 12px; border-radius: 8px;
  font-size: 1rem; cursor: pointer; transition: background var(--transition);
}
.btn-logout:hover { background: rgba(255,71,87,0.25); }

/* ═══════════════════════════════════════════════════════════
   APP MAIN
════════════════════════════════════════════════════════════ */
.app-main {
  flex: 1; padding: 24px 20px;
  max-width: 1400px; margin: 0 auto; width: 100%;
}

.tab-panel { display: none; animation: fadeIn 0.3s ease; }
.tab-panel.active { display: block; }
@keyframes fadeIn { from { opacity:0; transform:translateY(8px); } to { opacity:1; transform:translateY(0); } }

.section-header {
  display: flex; align-items: center; gap: 12px;
  margin-bottom: 16px; margin-top: 28px;
}
.section-header:first-child { margin-top: 0; }
.section-header h2 { font-size: 1.15rem; font-weight: 700; }
.section-tag {
  font-size: 0.7rem; font-weight: 600; letter-spacing: 0.1em;
  background: var(--accent-dim); color: var(--accent);
  border: 1px solid rgba(0,212,255,0.25);
  padding: 3px 10px; border-radius: 20px; text-transform: uppercase;
}

/* ── Dashboard Strip ──────────────────────────────────────── */
.dashboard-strip {
  display: flex; align-items: center; gap: 0;
  padding: 16px 24px; margin-bottom: 28px; flex-wrap: wrap;
  overflow: hidden;
}
.dash-stat {
  display: flex; flex-direction: column; gap: 4px;
  padding: 8px 20px;
  flex: 1; min-width: 100px;
}
.stat-label { font-size: 0.72rem; color: var(--text-sub); font-weight: 600; text-transform: uppercase; letter-spacing: 0.07em; white-space: nowrap; }
.stat-value { font-size: 1.05rem; font-weight: 700; font-family: var(--mono); color: var(--text); }
.stat-value.highlight { color: var(--accent); }
.stat-value.positive  { color: var(--green); }
.stat-value.negative  { color: var(--red); }

.dash-divider {
  width: 1px; height: 40px; background: var(--glass-brd);
  flex-shrink: 0;
}

/* ── Coin Grid ────────────────────────────────────────────── */
.coin-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}

.coin-card {
  background: var(--glass);
  border: 1px solid var(--glass-brd);
  border-radius: var(--radius);
  padding: 20px;
  cursor: default;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
  position: relative;
  overflow: hidden;
}
.coin-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--coin-color, var(--accent));
  opacity: 0.7;
  transition: opacity var(--transition);
}
.coin-card:hover {
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--coin-color, var(--accent)) 40%, transparent);
  box-shadow: 0 8px 32px rgba(0,0,0,0.4),
              0 0 0 1px color-mix(in srgb, var(--coin-color, var(--accent)) 20%, transparent);
}
.coin-card:hover::before { opacity: 1; }

.coin-header {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 14px;
}
.coin-icon {
  width: 40px; height: 40px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; font-weight: 700; flex-shrink: 0;
}
.coin-info { flex: 1; min-width: 0; }
.coin-name  { display: block; font-weight: 700; font-size: 0.92rem; }
.coin-risk  {
  display: inline-block; font-size: 0.65rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.07em;
  padding: 2px 7px; border-radius: 4px; margin-top: 3px;
  background: var(--glass); border: 1px solid var(--glass-brd);
  color: var(--text-sub);
}
.coin-risk.risk-low         { color: var(--green);  background: var(--green-dim); border-color: rgba(0,230,118,0.2); }
.coin-risk.risk-medium      { color: #ffa500; background: rgba(255,165,0,0.12); border-color: rgba(255,165,0,0.25); }
.coin-risk.risk-high        { color: var(--red); background: var(--red-dim); border-color: rgba(255,71,87,0.2); }
.coin-risk.risk-very-high   { color: var(--red); background: var(--red-dim); border-color: rgba(255,71,87,0.3); }
.coin-risk.risk-extreme     { color: #ff0040; background: rgba(255,0,64,0.15); border-color: rgba(255,0,64,0.3); animation: riskGlow 2s ease-in-out infinite; }
.coin-risk.risk-special     { color: var(--accent); background: var(--accent-dim); border-color: rgba(0,212,255,0.25); }
@keyframes riskGlow {
  0%,100% { box-shadow: none; }
  50% { box-shadow: 0 0 8px rgba(255,0,64,0.5); }
}

.coin-change {
  font-family: var(--mono); font-size: 0.82rem; font-weight: 700;
  padding: 4px 8px; border-radius: 6px;
  flex-shrink: 0;
}
.coin-change.positive { color: var(--green); background: var(--green-dim); }
.coin-change.negative { color: var(--red);   background: var(--red-dim); }

.coin-price {
  font-family: var(--mono); font-size: 1.5rem; font-weight: 500;
  color: var(--text); margin-bottom: 18px;
  letter-spacing: -0.5px;
}

.coin-actions { display: flex; gap: 10px; }
.btn-buy, .btn-sell {
  flex: 1; padding: 9px 0;
  border: none; border-radius: 8px;
  font-family: var(--font); font-size: 0.83rem; font-weight: 700;
  cursor: pointer; letter-spacing: 0.04em;
  transition: opacity var(--transition), transform var(--transition), box-shadow var(--transition);
}
.btn-buy  { background: var(--green); color: #000; box-shadow: 0 2px 12px rgba(0,230,118,0.3); }
.btn-sell { background: var(--red);   color: #fff; box-shadow: 0 2px 12px rgba(255,71,87,0.3); }
.btn-buy:hover  { opacity: 0.88; transform: translateY(-1px); }
.btn-sell:hover { opacity: 0.88; transform: translateY(-1px); }
.btn-buy:active, .btn-sell:active { transform: translateY(0); }

/* ═══════════════════════════════════════════════════════════
   TABLES (Portfolio, History, Leaderboard)
════════════════════════════════════════════════════════════ */
.table-card { overflow: hidden; }

.table-row, .portfolio-header, .history-header, .lb-header {
  display: grid; padding: 12px 20px; gap: 12px; align-items: center;
  font-size: 0.78rem;
}
.portfolio-header, .history-header, .lb-header {
  color: var(--text-sub); font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.07em; border-bottom: 1px solid var(--glass-brd);
}

/* Portfolio */
.portfolio-header { grid-template-columns: 2fr 1fr 1fr 1fr 1.2fr; }
.portfolio-row {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr 1.2fr;
  padding: 14px 20px; gap: 12px; align-items: center;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  transition: background var(--transition);
  font-family: var(--mono); font-size: 0.82rem;
}
.portfolio-row:hover { background: var(--glass-hover); }
.portfolio-row:last-child { border-bottom: none; }

.port-coin { display: flex; align-items: center; gap: 8px; font-family: var(--font); font-weight: 600; }
.port-icon { font-size: 1.1rem; }
.port-pnl small { display: block; font-size: 0.7rem; opacity: 0.8; }

/* History */
.history-header { grid-template-columns: 70px 1.5fr 1fr 1fr 1fr 1.5fr; }
.history-row {
  display: grid; grid-template-columns: 70px 1.5fr 1fr 1fr 1fr 1.5fr;
  padding: 13px 20px; gap: 12px; align-items: center;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  transition: background var(--transition);
  font-family: var(--mono); font-size: 0.8rem;
}
.history-row:hover { background: var(--glass-hover); }
.history-row:last-child { border-bottom: none; }

.buy-badge, .sell-badge {
  display: inline-block; padding: 3px 8px; border-radius: 5px;
  font-size: 0.7rem; font-weight: 700; letter-spacing: 0.06em;
  font-family: var(--font);
}
.buy-badge  { background: var(--green-dim); color: var(--green); border: 1px solid rgba(0,230,118,0.25); }
.sell-badge { background: var(--red-dim);   color: var(--red);   border: 1px solid rgba(255,71,87,0.25); }

.history-time { color: var(--text-sub); font-size: 0.72rem; }

/* Leaderboard */
.lb-header { grid-template-columns: 80px 1fr 1fr; }
.lb-row {
  display: grid; grid-template-columns: 80px 1fr 1fr;
  padding: 14px 20px; gap: 12px; align-items: center;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  transition: background var(--transition);
  font-family: var(--mono); font-size: 0.85rem;
}
.lb-row:hover { background: var(--glass-hover); }
.lb-row:last-child { border-bottom: none; }
.lb-row.lb-me {
  background: var(--accent-dim);
  border-left: 3px solid var(--accent);
}
.lb-rank { font-size: 1.1rem; }
.lb-user { font-family: var(--font); font-weight: 600; }
.lb-worth { font-weight: 700; color: var(--gold); }

.positive { color: var(--green); }
.negative { color: var(--red); }

.empty-state {
  text-align: center; color: var(--text-dim);
  font-size: 0.9rem; padding: 48px 24px;
}

/* ═══════════════════════════════════════════════════════════
   TRADE MODAL
════════════════════════════════════════════════════════════ */
.modal-overlay {
  display: none; position: fixed; inset: 0; z-index: 200;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(6px);
  align-items: center; justify-content: center;
  padding: 20px;
  animation: fadeIn 0.2s ease;
}
.modal-overlay.active { display: flex; }

.modal-card {
  width: 100%; max-width: 420px;
  padding: 32px 28px;
  animation: slideUp 0.3s cubic-bezier(.16,1,.3,1) both;
}

.modal-header {
  display: flex; align-items: center; gap: 16px;
  margin-bottom: 24px;
}
.modal-coin-icon { font-size: 2rem; }
.modal-card h3   { font-size: 1.25rem; font-weight: 700; }
.modal-coin-sub  { font-size: 0.8rem; color: var(--text-sub); }

.modal-price-row, .modal-balance-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 10px 14px;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--glass-brd);
  border-radius: 8px;
  margin-bottom: 12px;
  font-size: 0.85rem;
}
.modal-price-label { color: var(--text-sub); }
.modal-price-val   { font-family: var(--mono); font-weight: 600; color: var(--accent); font-size: 1rem; }

.modal-input-row { margin: 16px 0; }
.modal-input-row label {
  display: block; font-size: 0.75rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.07em;
  color: var(--text-sub); margin-bottom: 8px;
}
.qty-input-wrap { display: flex; gap: 8px; }
.qty-input-wrap input {
  flex: 1; padding: 12px 14px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--glass-brd);
  border-radius: 8px; color: var(--text);
  font-family: var(--mono); font-size: 1rem;
  outline: none;
  transition: border var(--transition), box-shadow var(--transition);
}
.qty-input-wrap input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}
.btn-max {
  padding: 0 16px;
  background: var(--accent-dim); border: 1px solid rgba(0,212,255,0.3);
  color: var(--accent); border-radius: 8px;
  font-family: var(--font); font-size: 0.75rem; font-weight: 700;
  cursor: pointer; transition: background var(--transition);
  white-space: nowrap;
}
.btn-max:hover { background: rgba(0,212,255,0.25); }

.modal-calc {
  font-family: var(--mono); font-size: 0.78rem;
  color: var(--text-sub); padding: 10px 0;
  border-top: 1px solid var(--glass-brd); margin-top: 4px;
}
.modal-calc strong { color: var(--text); }

.modal-actions { display: flex; gap: 12px; margin-top: 20px; }
.btn-modal-cancel {
  flex: 1; padding: 12px;
  background: var(--glass); border: 1px solid var(--glass-brd);
  color: var(--text-sub); border-radius: 10px;
  font-family: var(--font); font-size: 0.9rem; font-weight: 600;
  cursor: pointer; transition: background var(--transition), color var(--transition);
}
.btn-modal-cancel:hover { background: var(--glass-hover); color: var(--text); }

.btn-modal-confirm {
  flex: 2; padding: 12px;
  border: none; border-radius: 10px;
  font-family: var(--font); font-size: 0.9rem; font-weight: 700;
  cursor: pointer; transition: opacity var(--transition), transform var(--transition);
}
.btn-modal-confirm.btn-buy { background: var(--green); color: #000; box-shadow: 0 4px 20px rgba(0,230,118,0.35); }
.btn-modal-confirm.btn-sell-modal { background: var(--red); color: #fff; box-shadow: 0 4px 20px rgba(255,71,87,0.35); }
.btn-modal-confirm:hover { opacity: 0.88; transform: translateY(-1px); }

/* ═══════════════════════════════════════════════════════════
   LIVE CHAT
════════════════════════════════════════════════════════════ */
.chat-panel {
  position: fixed; bottom: 24px; right: 24px; z-index: 150;
  width: 300px;
  display: flex; flex-direction: column;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 8px 48px rgba(0,0,0,0.5);
  transition: height var(--transition);
  max-height: 420px;
}
.chat-panel.minimized .chat-body { display: none; }
.chat-panel.minimized { max-height: 52px; }

.chat-topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 16px;
  background: rgba(0,0,0,0.3);
  border-bottom: 1px solid var(--glass-brd);
  cursor: default; flex-shrink: 0;
}
.chat-title { font-size: 0.82rem; font-weight: 700; }
.chat-toggle-btn {
  background: transparent; border: none;
  color: var(--text-sub); cursor: pointer; font-size: 0.75rem;
  padding: 2px 6px; border-radius: 4px;
  transition: color var(--transition), background var(--transition);
}
.chat-toggle-btn:hover { color: var(--text); background: var(--glass-hover); }

.chat-body { display: flex; flex-direction: column; flex: 1; overflow: hidden; }
.chat-messages {
  flex: 1; overflow-y: auto; padding: 12px;
  display: flex; flex-direction: column; gap: 8px;
  min-height: 0; max-height: 280px;
}
.chat-messages::-webkit-scrollbar { width: 4px; }
.chat-messages::-webkit-scrollbar-track { background: transparent; }
.chat-messages::-webkit-scrollbar-thumb { background: var(--glass-brd); border-radius: 4px; }

.chat-msg {
  display: flex; flex-direction: column; gap: 2px;
  padding: 8px 10px;
  background: rgba(255,255,255,0.04);
  border-radius: 8px;
  animation: fadeIn 0.2s ease;
}
.chat-msg.chat-me {
  background: var(--accent-dim);
  border-left: 2px solid var(--accent);
}
.chat-user {
  font-size: 0.68rem; font-weight: 700;
  color: var(--accent); text-transform: uppercase; letter-spacing: 0.06em;
}
.chat-msg.chat-me .chat-user { color: var(--accent); }
.chat-text { font-size: 0.82rem; color: var(--text); word-break: break-word; line-height: 1.4; }

.chat-input-row {
  display: flex; gap: 8px; padding: 10px;
  border-top: 1px solid var(--glass-brd);
  background: rgba(0,0,0,0.2);
}
.chat-input-row input {
  flex: 1; padding: 8px 12px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--glass-brd); border-radius: 8px;
  color: var(--text); font-family: var(--font); font-size: 0.82rem;
  outline: none; transition: border var(--transition);
}
.chat-input-row input:focus { border-color: var(--accent); }
.chat-input-row input::placeholder { color: var(--text-dim); }

.btn-chat-send {
  width: 36px; height: 36px;
  background: var(--accent); border: none; border-radius: 8px;
  color: #000; font-size: 1rem; font-weight: 700;
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  transition: opacity var(--transition), transform var(--transition);
  flex-shrink: 0;
}
.btn-chat-send:hover { opacity: 0.88; transform: scale(1.05); }

/* ═══════════════════════════════════════════════════════════
   FOOTER
════════════════════════════════════════════════════════════ */
.app-footer {
  text-align: center; padding: 20px;
  color: var(--text-dim); font-size: 0.78rem;
  border-top: 1px solid var(--glass-brd);
  display: flex; align-items: center; justify-content: center; gap: 8px;
}
.footer-sep { color: var(--text-dim); }

/* ═══════════════════════════════════════════════════════════
   TOAST
════════════════════════════════════════════════════════════ */
#toast {
  position: fixed; bottom: 100px; left: 50%; transform: translateX(-50%) translateY(20px);
  background: var(--bg-2); border: 1px solid var(--glass-brd);
  color: var(--text); padding: 12px 24px; border-radius: 30px;
  font-size: 0.85rem; font-weight: 600;
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
  opacity: 0; transition: opacity 0.3s ease, transform 0.3s ease;
  z-index: 300; pointer-events: none; white-space: nowrap;
  max-width: 90vw;
}
#toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ═══════════════════════════════════════════════════════════
   SCROLLBAR
════════════════════════════════════════════════════════════ */
::-webkit-scrollbar         { width: 6px; height: 6px; }
::-webkit-scrollbar-track   { background: transparent; }
::-webkit-scrollbar-thumb   { background: var(--glass-brd); border-radius: 6px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.15); }

/* ═══════════════════════════════════════════════════════════
   RESPONSIVE
════════════════════════════════════════════════════════════ */
@media (max-width: 900px) {
  .dashboard-strip { gap: 0; padding: 12px; }
  .dash-stat { padding: 8px 12px; min-width: 80px; }
  .dash-divider { display: none; }
  .dashboard-strip { row-gap: 0; }
}

@media (max-width: 720px) {
  .topnav { height: auto; padding: 10px 14px; flex-wrap: wrap; gap: 10px; }
  .nav-tabs { max-width: 100%; order: 3; width: 100%; }
  .topnav-right { margin-left: auto; }

  .status-text { display: none; }

  .coin-grid { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); }
  .coin-price { font-size: 1.2rem; }

  /* Portfolio table: hide some columns */
  .portfolio-header { grid-template-columns: 2fr 1fr 1.2fr; }
  .portfolio-header span:nth-child(3),
  .portfolio-header span:nth-child(4) { display: none; }
  .portfolio-row { grid-template-columns: 2fr 1fr 1.2fr; }
  .port-avg, .port-val { display: none; }

  /* History table */
  .history-header { grid-template-columns: 60px 1fr 1fr 1fr; }
  .history-header span:nth-child(4),
  .history-header span:nth-child(6) { display: none; }
  .history-row { grid-template-columns: 60px 1fr 1fr 1fr; }
  .history-price, .history-time { display: none; }

  .chat-panel { width: calc(100vw - 32px); right: 16px; bottom: 16px; }

  .app-main { padding: 16px 12px; }
}

@media (max-width: 480px) {
  .logo-title { font-size: 2rem; }
  .login-card { padding: 24px 18px; }
  .login-perks { flex-direction: column; gap: 6px; align-items: center; }

  .dashboard-strip { flex-wrap: wrap; }
  .dash-stat { min-width: 45%; flex: 1 1 45%; }

  .coin-grid { grid-template-columns: 1fr 1fr; }
  .coin-price { font-size: 1.05rem; }

  .modal-card { padding: 24px 18px; }

  .section-header h2 { font-size: 1rem; }
}

@media (max-width: 360px) {
  .coin-grid { grid-template-columns: 1fr; }
}