/* ============================================================
   CHATCORE — STYLES.CSS
   Color palette derived from FB Messenger UI mockup
   Primary Blue:   #1877F2
   Dark Blue:      #0A5DC2
   Light Blue:     #E7F3FF
   Mid Blue:       #4A90D9
   White:          #FFFFFF
   Off-White:      #F0F2F5
   Dark Text:      #1C1C1E
   Gray Text:      #65676B
   Message Out:    #0084FF
   ============================================================ */

:root {
  --blue:        #1877F2;
  --blue-dark:   #0A5DC2;
  --blue-mid:    #4A90D9;
  --blue-light:  #E7F3FF;
  --blue-pale:   #F0F7FF;
  --msg-out:     #0084FF;
  --white:       #FFFFFF;
  --off-white:   #F0F2F5;
  --dark:        #1C1C1E;
  --gray:        #65676B;
  --gray-light:  #B0B3B8;

  --font-display: 'Syne', sans-serif;
  --font-body:    'DM Sans', sans-serif;

  --radius:    16px;
  --radius-sm: 10px;
  --radius-lg: 24px;
  --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-body);
  background: var(--white);
  color: var(--dark);
  overflow-x: hidden;
  line-height: 1.6;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { display: block; max-width: 100%; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
}

/* ============ TYPOGRAPHY ============ */
.section-label {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 16px;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.15;
  color: var(--dark);
  margin-bottom: 32px;
}

.section-title.white { color: var(--white); }
.accent { color: var(--blue); }

/* ============ BUTTONS ============ */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--blue);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 14px 28px;
  border-radius: 100px;
  border: 2px solid var(--blue);
  transition: var(--transition);
}
.btn-primary:hover {
  background: var(--blue-dark);
  border-color: var(--blue-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(24,119,242,0.35);
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--blue);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 14px 28px;
  border-radius: 100px;
  border: 2px solid var(--blue);
  transition: var(--transition);
}
.btn-ghost:hover {
  background: var(--blue-light);
  transform: translateY(-2px);
}

.btn-large { padding: 16px 36px; font-size: 1rem; }

/* ============ NAV ============ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 48px;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(24,119,242,0.08);
  transition: var(--transition);
}

.nav.scrolled {
  padding: 12px 48px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.06);
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--dark);
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--blue);
  display: inline-block;
}
.big-dot {
  width: 16px; height: 16px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--gray);
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--blue); }

.nav-cta {
  background: var(--blue) !important;
  color: var(--white) !important;
  padding: 9px 22px;
  border-radius: 100px;
  font-weight: 500 !important;
  transition: var(--transition) !important;
}
.nav-cta:hover {
  background: var(--blue-dark) !important;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(24,119,242,0.3);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--dark);
  border-radius: 2px;
  transition: var(--transition);
}
.hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

.mobile-menu {
  display: none;
  position: fixed;
  top: 70px; left: 0; right: 0;
  background: var(--white);
  padding: 24px 32px;
  flex-direction: column;
  gap: 20px;
  z-index: 99;
  border-bottom: 1px solid var(--off-white);
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--dark);
}
.mobile-menu a:hover { color: var(--blue); }

/* ============ HERO ============ */
.hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 60px;
  padding: 120px 80px 80px;
  position: relative;
  overflow: hidden;
  background: var(--white);
}

.hero-bg-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
}
.orb-1 {
  width: 600px; height: 600px;
  background: rgba(24,119,242,0.1);
  top: -200px; right: -100px;
}
.orb-2 {
  width: 400px; height: 400px;
  background: rgba(74,144,217,0.07);
  bottom: -100px; left: -100px;
}

.hero-content { position: relative; z-index: 2; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--blue);
  background: var(--blue-light);
  border: 1px solid rgba(24,119,242,0.2);
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 24px;
}
.badge-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--blue);
  animation: pulse-badge 2s infinite;
}
@keyframes pulse-badge {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(1.4); }
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 5vw, 4.5rem);
  font-weight: 800;
  line-height: 1.08;
  color: var(--dark);
  margin-bottom: 24px;
}
.title-accent {
  background: linear-gradient(135deg, var(--blue), var(--blue-mid));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 1.1rem;
  color: var(--gray);
  max-width: 480px;
  margin-bottom: 40px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
}

/* Hero Chat Window */
.hero-chat {
  position: relative;
  z-index: 2;
  display: flex;
  justify-content: center;
  align-items: center;
}

.chat-window {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow:
    0 4px 6px rgba(0,0,0,0.04),
    0 20px 60px rgba(24,119,242,0.15),
    0 0 0 1px rgba(24,119,242,0.08);
  width: 360px;
  overflow: hidden;
}

.chat-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  background: var(--blue);
  color: var(--white);
}

.chat-avatar {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: rgba(255,255,255,0.25);
  border: 2px solid rgba(255,255,255,0.4);
  position: relative;
  overflow: hidden;
}
.chat-avatar::after {
  content: '🤖';
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  font-size: 1.2rem;
}

.chat-name {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
}
.chat-status {
  font-size: 0.72rem;
  opacity: 0.85;
  display: flex;
  align-items: center;
  gap: 5px;
}
.status-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: #4ade80;
  display: inline-block;
  animation: pulse-status 2s infinite;
}
@keyframes pulse-status {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.chat-body {
  padding: 16px;
  min-height: 260px;
  max-height: 300px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: var(--off-white);
  scroll-behavior: smooth;
}
.chat-body::-webkit-scrollbar { width: 3px; }
.chat-body::-webkit-scrollbar-track { background: transparent; }
.chat-body::-webkit-scrollbar-thumb { background: var(--gray-light); border-radius: 10px; }

.msg { display: flex; flex-direction: column; gap: 3px; }

.msg-in { align-items: flex-start; }
.msg-out { align-items: flex-end; }

.msg-bubble {
  padding: 10px 14px;
  border-radius: 18px;
  font-size: 0.85rem;
  line-height: 1.5;
  max-width: 80%;
  word-break: break-word;
}
.msg-in .msg-bubble {
  background: var(--white);
  color: var(--dark);
  border-bottom-left-radius: 4px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}
.msg-out .msg-bubble {
  background: var(--msg-out);
  color: var(--white);
  border-bottom-right-radius: 4px;
}
.msg-time {
  font-size: 0.65rem;
  color: var(--gray-light);
  padding: 0 4px;
}

.typing-indicator {
  display: flex;
  gap: 5px;
  align-items: center;
  padding: 12px 16px;
}
.typing-indicator span {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--gray-light);
  animation: bounce-dot 1.4s infinite;
}
.typing-indicator span:nth-child(2) { animation-delay: 0.15s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.3s; }

@keyframes bounce-dot {
  0%, 60%, 100% { transform: translateY(0); }
  30% { transform: translateY(-6px); background: var(--blue); }
}

.chat-footer {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-top: 1px solid rgba(0,0,0,0.06);
  background: var(--white);
}

.chat-input {
  flex: 1;
  border: 1px solid rgba(24,119,242,0.2);
  border-radius: 100px;
  padding: 9px 16px;
  font-size: 0.85rem;
  font-family: var(--font-body);
  color: var(--dark);
  background: var(--off-white);
  outline: none;
  transition: var(--transition);
}
.chat-input:focus {
  border-color: var(--blue);
  background: var(--white);
  box-shadow: 0 0 0 3px rgba(24,119,242,0.1);
}

.chat-send {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--blue);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  flex-shrink: 0;
}
.chat-send svg { width: 15px; height: 15px; color: var(--white); }
.chat-send:hover {
  background: var(--blue-dark);
  transform: scale(1.08);
}

/* Stat Pills */
.stat-pill {
  position: absolute;
  background: var(--white);
  border: 1px solid rgba(24,119,242,0.12);
  box-shadow: 0 4px 16px rgba(0,0,0,0.08);
  padding: 8px 16px;
  border-radius: 100px;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--dark);
  white-space: nowrap;
  z-index: 3;
}
.pill-1 { bottom: 18%; right: 6%; animation: float-pill 4s ease-in-out infinite; }
.pill-2 { bottom: 30%; right: 4%; animation: float-pill 4s ease-in-out infinite 1.2s; }
.pill-3 { bottom: 42%; right: 3%; animation: float-pill 4s ease-in-out infinite 2.4s; }

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

/* ============ OVERVIEW ============ */
.overview {
  padding: 120px 0;
  background: var(--white);
}

.overview-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.overview-text p {
  color: var(--gray);
  line-height: 1.75;
  margin-bottom: 20px;
  font-size: 1rem;
}

.overview-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.tag {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--blue);
  background: var(--blue-light);
  border: 1px solid rgba(24,119,242,0.15);
  padding: 6px 14px;
  border-radius: 100px;
}

.overview-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.mini-card {
  background: var(--off-white);
  border: 1px solid rgba(0,0,0,0.05);
  border-radius: var(--radius);
  padding: 24px 20px;
  transition: var(--transition);
}
.mini-card:hover {
  border-color: rgba(24,119,242,0.2);
  box-shadow: 0 8px 24px rgba(24,119,242,0.08);
  transform: translateY(-3px);
}
.mini-card-icon { font-size: 1.6rem; margin-bottom: 12px; }
.mini-card-title {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 6px;
}
.mini-card-text { font-size: 0.82rem; color: var(--gray); line-height: 1.5; }

/* ============ FEATURES ============ */
.features {
  padding: 120px 0;
  background: var(--blue);
  position: relative;
  overflow: hidden;
}

.features-bg-stripe {
  position: absolute;
  top: 0; right: 0;
  width: 40%;
  height: 100%;
  background: rgba(255,255,255,0.03);
  transform: skewX(-8deg) translateX(20%);
  pointer-events: none;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card:hover {
  background: rgba(255,255,255,0.12);
  transform: translateY(-4px);
  border-color: rgba(255,255,255,0.25);
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, rgba(255,255,255,0), rgba(255,255,255,0.4), rgba(255,255,255,0));
}

.feature-large { grid-column: span 2; }
.feature-wide { grid-column: span 3; }

.feature-number {
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.15em;
  color: rgba(255,255,255,0.35);
  margin-bottom: 16px;
}

.feature-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 12px;
}

.feature-card p {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.7);
  line-height: 1.65;
}

.feature-code {
  margin-top: 20px;
  background: rgba(0,0,0,0.3);
  border-radius: var(--radius-sm);
  padding: 16px 18px;
  font-family: 'Courier New', monospace;
  font-size: 0.78rem;
  line-height: 1.8;
  color: rgba(255,255,255,0.6);
  border: 1px solid rgba(255,255,255,0.08);
}
.code-comment { color: rgba(255,255,255,0.35); }
.code-blue { color: #93c5fd; }
.code-attr { color: #fca5a5; }
.code-string { color: #86efac; }
.code-fn { color: #fde68a; }

.feature-tags-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}
.f-tag {
  font-size: 0.75rem;
  padding: 5px 12px;
  border-radius: 100px;
  background: rgba(255,255,255,0.12);
  color: rgba(255,255,255,0.8);
  border: 1px solid rgba(255,255,255,0.1);
}

/* ============ USE CASES ============ */
.usecases {
  padding: 120px 0;
  background: var(--white);
}

.usecases-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.usecase-row {
  display: grid;
  grid-template-columns: 80px 1fr auto;
  gap: 40px;
  align-items: center;
  padding: 40px 0;
  border-bottom: 1px solid var(--off-white);
  transition: var(--transition);
}
.usecase-row:hover { background: var(--blue-pale); padding-left: 20px; border-radius: var(--radius-sm); }
.usecase-row:last-child { border-bottom: none; }

.usecase-num {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--blue-light);
  transition: var(--transition);
  user-select: none;
}
.usecase-row:hover .usecase-num { color: var(--blue); }

.usecase-body h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 10px;
}
.usecase-body p { font-size: 0.9rem; color: var(--gray); line-height: 1.65; max-width: 520px; }

.usecase-stat {
  text-align: center;
  min-width: 140px;
  padding: 20px;
  background: var(--blue-light);
  border-radius: var(--radius);
  border: 1px solid rgba(24,119,242,0.1);
  flex-shrink: 0;
}
.stat-big {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
  color: var(--blue);
  line-height: 1;
  margin-bottom: 6px;
}
.stat-label { font-size: 0.72rem; color: var(--gray); line-height: 1.4; }

/* ============ INTEGRATION ============ */
.integration {
  padding: 120px 0;
  background: var(--off-white);
}

.integration-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.integration-text p {
  color: var(--gray);
  font-size: 1rem;
  line-height: 1.75;
  margin-bottom: 28px;
}

.integration-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.integration-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.92rem;
  color: var(--dark);
}
.check {
  width: 22px; height: 22px;
  background: var(--blue);
  color: var(--white);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  flex-shrink: 0;
  font-weight: 700;
}

/* Orbit */
.platform-orbit {
  position: relative;
  width: 320px;
  height: 320px;
  margin: 0 auto;
}

.orbit-center {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  background: var(--white);
  border: 3px solid var(--blue);
  border-radius: 50%;
  width: 90px; height: 90px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  z-index: 2;
  box-shadow: 0 0 0 12px rgba(24,119,242,0.1), 0 0 0 24px rgba(24,119,242,0.04);
}
.orbit-center span {
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 800;
  color: var(--blue);
}

.orbit-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px dashed rgba(24,119,242,0.2);
  animation: spin-orbit 20s linear infinite;
}

.orbit-item {
  position: absolute;
  width: 64px; height: 64px;
  background: var(--white);
  border: 2px solid rgba(24,119,242,0.15);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--blue);
  font-family: var(--font-display);
  box-shadow: 0 4px 16px rgba(0,0,0,0.06);
  top: 50%; left: 50%;
  transform: rotate(var(--angle)) translateX(130px) rotate(calc(-1 * var(--angle))) translate(-50%, -50%);
}

@keyframes spin-orbit {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* ============ SCALABILITY ============ */
.scalability {
  padding: 120px 0;
  background: var(--white);
}

.scale-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 60px;
}

.scale-card {
  padding: 32px 24px;
  background: var(--off-white);
  border-radius: var(--radius);
  border: 1px solid rgba(0,0,0,0.05);
  transition: var(--transition);
}
.scale-card:hover {
  border-color: rgba(24,119,242,0.2);
  box-shadow: 0 8px 32px rgba(24,119,242,0.1);
  transform: translateY(-4px);
}
.scale-icon { font-size: 2rem; margin-bottom: 16px; }
.scale-card h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 10px;
}
.scale-card p { font-size: 0.85rem; color: var(--gray); line-height: 1.6; }

.scale-metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  background: var(--blue);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.metric {
  padding: 40px 20px;
  text-align: center;
}
.metric-num {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--white);
  line-height: 1;
  margin-bottom: 10px;
}
.metric-label { font-size: 0.8rem; color: rgba(255,255,255,0.65); }
.metric-divider {
  width: 1px;
  background: rgba(255,255,255,0.12);
  margin: 20px 0;
}

/* ============ CTA ============ */
.cta-section {
  padding: 120px 0;
  background: var(--blue-pale);
  position: relative;
  overflow: hidden;
  text-align: center;
}

.cta-orb {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 600px; height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(24,119,242,0.15) 0%, transparent 70%);
  pointer-events: none;
}

.cta-inner { position: relative; z-index: 2; }
.cta-tag {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 20px;
}
.cta-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  color: var(--dark);
  margin-bottom: 24px;
}
.cta-sub {
  font-size: 1.05rem;
  color: var(--gray);
  max-width: 480px;
  margin: 0 auto 40px;
  line-height: 1.7;
}
.cta-buttons {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
}

/* ============ CONTACT ============ */
.contact {
  padding: 120px 0;
  background: var(--white);
  text-align: center;
}

.contact-sub {
  font-size: 1rem;
  color: var(--gray);
  max-width: 480px;
  margin: 0 auto 60px;
  line-height: 1.7;
}

.contact-cards {
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
}

.contact-card {
  display: flex;
  align-items: center;
  gap: 18px;
  background: var(--off-white);
  border: 2px solid rgba(24,119,242,0.1);
  border-radius: var(--radius-lg);
  padding: 28px 32px;
  min-width: 320px;
  transition: var(--transition);
  text-align: left;
}
.contact-card:hover {
  border-color: var(--blue);
  box-shadow: 0 12px 40px rgba(24,119,242,0.15);
  transform: translateY(-4px);
}

.contact-avatar {
  width: 52px; height: 52px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 800;
  color: var(--white);
  flex-shrink: 0;
}
.jk { background: linear-gradient(135deg, var(--blue), var(--blue-dark)); }
.av { background: linear-gradient(135deg, #7c3aed, #4f46e5); }

.contact-name {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 4px;
}
.contact-email {
  font-size: 0.82rem;
  color: var(--blue);
}

.contact-arrow {
  margin-left: auto;
  font-size: 1.3rem;
  color: var(--blue);
  transition: var(--transition);
}
.contact-card:hover .contact-arrow { transform: translateX(6px); }

/* ============ FOOTER ============ */
.footer {
  background: var(--dark);
  padding: 32px 0;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-logo {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--white);
  display: flex;
  align-items: center;
  gap: 8px;
}
.footer-copy { font-size: 0.82rem; color: rgba(255,255,255,0.4); }

/* ============ REVEAL ANIMATIONS ============ */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s cubic-bezier(0.22, 1, 0.36, 1), transform 0.65s cubic-bezier(0.22, 1, 0.36, 1);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger reveals in grids */
.overview-cards .mini-card.reveal:nth-child(1) { transition-delay: 0.05s; }
.overview-cards .mini-card.reveal:nth-child(2) { transition-delay: 0.1s; }
.overview-cards .mini-card.reveal:nth-child(3) { transition-delay: 0.15s; }
.overview-cards .mini-card.reveal:nth-child(4) { transition-delay: 0.2s; }

.features-grid .feature-card.reveal:nth-child(1) { transition-delay: 0.05s; }
.features-grid .feature-card.reveal:nth-child(2) { transition-delay: 0.1s; }
.features-grid .feature-card.reveal:nth-child(3) { transition-delay: 0.15s; }
.features-grid .feature-card.reveal:nth-child(4) { transition-delay: 0.2s; }
.features-grid .feature-card.reveal:nth-child(5) { transition-delay: 0.05s; }

.scale-grid .scale-card.reveal:nth-child(1) { transition-delay: 0.05s; }
.scale-grid .scale-card.reveal:nth-child(2) { transition-delay: 0.1s; }
.scale-grid .scale-card.reveal:nth-child(3) { transition-delay: 0.15s; }
.scale-grid .scale-card.reveal:nth-child(4) { transition-delay: 0.2s; }

/* ============ RESPONSIVE ============ */
@media (max-width: 1024px) {
  .hero { grid-template-columns: 1fr; padding: 120px 40px 80px; gap: 40px; }
  .hero-chat { display: none; }
  .stat-pill { display: none; }
  .overview-grid { grid-template-columns: 1fr; gap: 40px; }
  .integration-inner { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr 1fr; }
  .feature-large, .feature-wide { grid-column: span 2; }
  .scale-grid { grid-template-columns: 1fr 1fr; }
  .scale-metrics { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .container { padding: 0 24px; }
  .nav { padding: 16px 24px; }
  .nav.scrolled { padding: 12px 24px; }
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .hero { padding: 100px 24px 60px; }
  .features-grid { grid-template-columns: 1fr; }
  .feature-large, .feature-wide { grid-column: span 1; }
  .usecase-row { grid-template-columns: 60px 1fr; gap: 20px; }
  .usecase-stat { display: none; }
  .scale-grid { grid-template-columns: 1fr; }
  .scale-metrics { grid-template-columns: 1fr 1fr; }
  .metric-divider { display: none; }
  .contact-card { min-width: 280px; }
  .overview-cards { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; text-align: center; }
}