/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  white-space: nowrap;
}

.btn--sm {
  padding: 0.5rem 1.25rem;
  font-size: var(--text-sm);
}

.btn--lg {
  padding: 0.875rem 2rem;
  font-size: var(--text-base);
}

.btn--primary {
  background: var(--gradient-brand);
  color: var(--text-primary);
  border: 1px solid rgba(28, 156, 156, 0.3);
}

.btn--primary:hover {
  box-shadow: var(--shadow-glow-teal);
  transform: translateY(-1px);
}

.btn--ghost {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--glass-border);
}

.btn--ghost:hover {
  border-color: var(--brand-teal);
  background: rgba(28, 156, 156, 0.05);
}

/* ===== BADGE ===== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 0.375rem 1rem;
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--brand-teal);
  background: rgba(28, 156, 156, 0.08);
  border: 1px solid rgba(28, 156, 156, 0.15);
  border-radius: var(--radius-full);
}

/* ===== NAV ===== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 100;
  transition: all var(--transition-base);
}

.nav--scrolled {
  background: rgba(10, 10, 15, 0.8);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border-bottom: 1px solid var(--glass-border);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.nav__brand {
  font-weight: 700;
  font-size: var(--text-lg);
  letter-spacing: -0.02em;
}

.nav__links {
  display: flex;
  gap: var(--space-xl);
}

.nav__links a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.nav__links a:hover {
  color: var(--text-primary);
}

.nav__cta {
  display: none;
}

.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}

.nav__hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-base);
}

/* Mobile nav */
@media (max-width: 768px) {
  .nav__links {
    position: fixed;
    inset: 0;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-2xl);
    background: var(--bg-primary);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-slow);
  }

  .nav__links.active {
    opacity: 1;
    visibility: visible;
  }

  .nav__links a {
    font-size: var(--text-2xl);
  }

  .nav__hamburger {
    display: flex;
    z-index: 101;
  }

  .nav__hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

  .nav__hamburger.active span:nth-child(2) {
    opacity: 0;
  }

  .nav__hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  .nav__cta {
    display: none !important;
  }
}

@media (min-width: 769px) {
  .nav__cta {
    display: inline-flex;
  }
}

/* ===== LANG TOGGLE ===== */
.lang-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--glass-border);
  background: transparent;
  color: var(--text-secondary);
  font-size: var(--text-xs);
  font-weight: 600;
  transition: all var(--transition-fast);
  cursor: pointer;
}

.lang-toggle:hover {
  border-color: var(--brand-teal);
  color: var(--brand-teal);
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

@media (max-width: 768px) {
  .nav__actions {
    position: absolute;
    right: 56px;
    top: 50%;
    transform: translateY(-50%);
  }
  .nav__actions .nav__cta {
    display: none !important;
  }
}

/* ===== SWAP CARDS ===== */
.swap-card {
  cursor: pointer;
  outline: none;
}

.swap-card .card {
  position: relative;
  min-height: 380px;
}

.swap-card__face {
  transition: opacity 0.4s ease, visibility 0.4s ease;
}

.swap-card__front {
  opacity: 1;
  visibility: visible;
}

.swap-card__back {
  position: absolute;
  inset: 0;
  padding: var(--space-2xl);
  opacity: 0;
  visibility: hidden;
  display: flex;
  flex-direction: column;
}

.swap-card.active .swap-card__front {
  opacity: 0;
  visibility: hidden;
}

.swap-card.active .swap-card__back {
  opacity: 1;
  visibility: visible;
}

.swap-card__hint {
  display: block;
  margin-top: auto;
  padding-top: var(--space-md);
  font-size: var(--text-xs);
  color: var(--text-muted);
  text-align: center;
  opacity: 0.6;
}

/* ===== CHAT DEMO ===== */
.chat-demo {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.chat-demo__messages {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  padding: var(--space-sm) 0;
}

.chat-msg {
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  font-size: var(--text-xs);
  line-height: 1.5;
  max-width: 90%;
}

.chat-msg--user {
  background: rgba(28, 156, 156, 0.1);
  border: 1px solid rgba(28, 156, 156, 0.15);
  align-self: flex-end;
  color: var(--text-primary);
}

.chat-msg--ai {
  background: var(--bg-tertiary);
  border: 1px solid var(--glass-border);
  align-self: flex-start;
  color: var(--text-secondary);
}

.chat-demo__input {
  display: flex;
  align-items: center;
  padding: var(--space-sm) var(--space-md);
  background: var(--bg-primary);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  font-size: var(--text-xs);
  color: var(--text-muted);
}

.chat-msg--rich {
  max-width: 100%;
  padding: var(--space-sm);
}

/* ===== VIZ: Risk gauge (Finance) ===== */
.viz-risk {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-xs);
}

.viz-risk__gauge {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex-shrink: 0;
}

.viz-risk__label {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  color: #ef4444;
  margin-top: -4px;
  letter-spacing: 0.05em;
}

.viz-risk__detail {
  font-size: 10px;
  color: var(--text-muted);
  line-height: 1.4;
}

.viz-table {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.viz-table__row {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 3px 6px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.02);
  font-size: 10px;
}

.viz-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1px 6px;
  border-radius: 3px;
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.05em;
  flex-shrink: 0;
}

.viz-badge--red {
  background: rgba(239, 68, 68, 0.15);
  color: #ef4444;
  border: 1px solid rgba(239, 68, 68, 0.25);
}

.viz-badge--yellow {
  background: rgba(245, 158, 11, 0.15);
  color: #f59e0b;
  border: 1px solid rgba(245, 158, 11, 0.25);
}

.viz-table__name {
  flex: 1;
  color: var(--text-secondary);
}

.viz-table__score {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--text-primary);
}

/* ===== VIZ: Bar chart (Education) ===== */
.viz-bars {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.viz-bars__item {
  display: grid;
  grid-template-columns: 60px 1fr 70px;
  align-items: center;
  gap: 6px;
}

.viz-bars__label {
  font-size: 10px;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.viz-bars__track {
  height: 6px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 3px;
  overflow: hidden;
}

.viz-bars__fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.8s ease;
}

.viz-bars__fill--green { background: var(--accent-education); }
.viz-bars__fill--yellow { background: var(--accent-tourism); }
.viz-bars__fill--red { background: #ef4444; }

.viz-bars__value {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  color: var(--text-primary);
  text-align: right;
  white-space: nowrap;
}

.viz-trend {
  font-size: 9px;
  font-weight: 600;
  margin-left: 2px;
}

.viz-trend--down { color: var(--accent-education); }
.viz-trend--up { color: #ef4444; }

.viz-insight {
  margin-top: 4px;
  font-size: 9px;
  color: var(--text-muted);
  padding: 3px 8px;
  background: rgba(16, 185, 129, 0.06);
  border-left: 2px solid var(--accent-education);
  border-radius: 0 4px 4px 0;
}

/* ===== VIZ: Compare + Dual bars (Tourism) ===== */
.viz-compare {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-xs);
}

.viz-compare__col {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1px;
}

.viz-compare__city {
  font-size: 9px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.viz-compare__score {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  color: var(--text-secondary);
  line-height: 1;
}

.viz-compare__score--high {
  color: var(--accent-tourism);
}

.viz-compare__max {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
}

.viz-compare__vs {
  font-size: 10px;
  color: var(--text-muted);
  font-weight: 600;
  padding: 0 var(--space-xs);
}

.viz-radar {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.viz-radar__row {
  display: grid;
  grid-template-columns: 64px 1fr;
  align-items: center;
  gap: 6px;
}

.viz-radar__cat {
  font-size: 9px;
  color: var(--text-muted);
  text-align: right;
}

.viz-radar__dual {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.viz-radar__bar {
  height: 4px;
  border-radius: 2px;
  transition: width 0.8s ease;
}

.viz-radar__bar--a { background: var(--accent-tourism); }
.viz-radar__bar--b { background: rgba(245, 158, 11, 0.3); }

.viz-radar__legend {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  margin-top: 4px;
}

.viz-radar__leg {
  font-size: 9px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 4px;
}

.viz-radar__leg::before {
  content: '';
  width: 8px;
  height: 4px;
  border-radius: 2px;
}

.viz-radar__leg--a { color: var(--accent-tourism); }
.viz-radar__leg--a::before { background: var(--accent-tourism); }

.viz-radar__leg--b { color: var(--text-muted); }
.viz-radar__leg--b::before { background: rgba(245, 158, 11, 0.3); }

/* ===== CARDS ===== */
.card {
  position: relative;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
  overflow: hidden;
}

.swap-card:hover .card {
  border-color: rgba(255, 255, 255, 0.1);
}

.card__accent {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
}

.card--finance .card__accent { background: var(--accent-finance); }
.card--finance:hover { box-shadow: var(--shadow-glow-finance); }

.card--education .card__accent { background: var(--accent-education); }
.card--education:hover { box-shadow: var(--shadow-glow-education); }

.card--tourism .card__accent { background: var(--accent-tourism); }
.card--tourism:hover { box-shadow: var(--shadow-glow-tourism); }

.card__icon {
  margin-bottom: var(--space-lg);
}

.card h3 {
  margin-bottom: var(--space-sm);
}

.card p {
  font-size: var(--text-sm);
  margin-bottom: var(--space-lg);
}

.card__capabilities {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.card__capabilities li {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  padding-left: var(--space-lg);
  position: relative;
}

.card__capabilities li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand-teal);
  opacity: 0.5;
}

/* ===== TAGS ===== */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 0.375rem 0.875rem;
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-tertiary);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-full);
}

/* ===== TECH BADGE ===== */
.tech-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.625rem 1.25rem;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--brand-teal);
  background: rgba(28, 156, 156, 0.06);
  border: 1px solid rgba(28, 156, 156, 0.12);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}

.tech-badge:hover {
  background: rgba(28, 156, 156, 0.1);
  border-color: rgba(28, 156, 156, 0.25);
  transform: translateY(-2px);
}