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

:root {
  --glass-bg:       rgba(255,255,255,0.05);
  --glass-bg-hover: rgba(255,255,255,0.08);
  --glass-border:   rgba(255,255,255,0.10);
  --glass-border-hi: rgba(255,255,255,0.20);

  --accent:   #7c6ef7;
  --accent2:  #4fa8f5;

  --t1: rgba(255,255,255,0.96);
  --t2: rgba(255,255,255,0.50);
  --t3: rgba(255,255,255,0.25);

  --blur: blur(28px);
  --r-xl: 28px;
  --r-lg: 18px;
  --r-md: 12px;
}

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--t1);
  background: #080c15;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse 90% 60% at 15% 5%,  rgba(108,92,231,0.20) 0%, transparent 55%),
    radial-gradient(ellipse 60% 50% at 85% 85%, rgba(79,168,245,0.13) 0%, transparent 55%),
    #080c15;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 32px;
}

/* ===== TYPOGRAPHY SCALE ===== */
.display {
  font-size: clamp(3.2rem, 8vw, 6.5rem);
  font-weight: 900;
  line-height: 1.00;
  letter-spacing: -0.04em;
}
.display-md {
  font-size: clamp(2.2rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
}
.display-sm {
  font-size: clamp(1.6rem, 3.5vw, 2.6rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.025em;
}
.overline {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}
.body-lg { font-size: 1.25rem; line-height: 1.72; color: var(--t2); }
.body-sm { font-size: 0.97rem; line-height: 1.65; color: var(--t2); }

/* ===== GRADIENT TEXT ===== */
.grad {
  background: linear-gradient(135deg, #fff 50%, rgba(124,110,247,0.7));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.grad-accent {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* animated gradient for hero h1 */
@keyframes gradShift {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}
.grad-animated {
  background: linear-gradient(120deg, #ffffff, #a89df5, #ffffff, #7ec8f5, #ffffff, #a89df5);
  background-size: 300% 300%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradShift 6s ease infinite;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 15px 32px;
  border-radius: var(--r-lg);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: opacity .2s, transform .15s;
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent), #5b8ef7);
  color: #fff;
  box-shadow: 0 6px 28px rgba(124,110,247,.40);
}
.btn-primary:hover { opacity: .87; }
.btn-primary:active { transform: scale(.97); }
.btn-ghost {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border-hi);
  color: var(--t1);
  backdrop-filter: var(--blur);
}
.btn-ghost:hover { background: var(--glass-bg-hover); }

/* ===== LOGO ===== */
.logo {
  font-size: 1.35rem;
  font-weight: 900;
  letter-spacing: 0.14em;
}

/* ===== NAV ===== */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 18px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(8,12,21,0.70);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border-bottom: 1px solid var(--glass-border);
}
nav .nav-cta { font-size: 0.9rem; padding: 10px 22px; }

/* ===== HERO ===== */
.hero {
  padding: 160px 0 120px;
  min-height: 100svh;
  display: flex;
  align-items: center;
  position: relative;
}
.hero-inner { max-width: 780px; }
.hero .overline { margin-bottom: 20px; }
.hero .display { margin-bottom: 28px; }
.hero .body-lg { max-width: 520px; margin-bottom: 48px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; }

/* scroll hint */
.scroll-hint {
  position: absolute;
  bottom: 40px;
  left: 32px;
  font-size: 0.78rem;
  color: var(--t3);
  letter-spacing: 0.08em;
  display: flex;
  align-items: center;
  gap: 8px;
}
.scroll-hint::before {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--t3);
  display: block;
}

/* ===== DIVIDER ===== */
.divider {
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--glass-border-hi), transparent);
  margin: 0;
}

/* ===== PROBLEM ===== */
.problem { padding: 100px 0; }
.problem-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
  margin-bottom: 56px;
  flex-wrap: wrap;
}
.problem-head .display-md { max-width: 480px; }
.problem-head .body-lg { max-width: 260px; }

.pain-list { display: flex; flex-direction: column; gap: 2px; }
.pain-item {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 22px 28px;
  border-radius: var(--r-lg);
  border: 1px solid transparent;
  transition: background .2s, border-color .2s;
  cursor: default;
}
.pain-item:hover {
  background: var(--glass-bg);
  border-color: var(--glass-border);
}
.pain-num {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--t3);
  min-width: 24px;
  letter-spacing: 0.06em;
}
.pain-text { font-size: 1.05rem; color: var(--t2); }
.pain-item:hover .pain-text { color: var(--t1); }

/* ===== METHOD ===== */
.method { padding: 100px 0; }
.method-head { margin-bottom: 72px; }
.method-head .overline { margin-bottom: 12px; }

.steps { display: flex; flex-direction: column; }
.step {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 0 40px;
  padding: 48px 0;
  border-top: 1px solid var(--glass-border);
  position: relative;
}
.step:last-child { border-bottom: 1px solid var(--glass-border); }
.step-num-big {
  font-size: 4.5rem;
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.04em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(255,255,255,0.12);
  user-select: none;
  padding-top: 4px;
}
.step:hover .step-num-big { -webkit-text-stroke-color: rgba(124,110,247,0.35); }
.step-content h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--t1);
}
.step-content p { color: var(--t2); font-size: 0.97rem; line-height: 1.7; }

/* ===== PAIN EXPANDED ===== */
.pain-body { display: flex; flex-direction: column; gap: 6px; }
.pain-text { font-size: 1.15rem; color: var(--t1); font-weight: 500; }
.pain-sub { font-size: 1rem; color: var(--t3); line-height: 1.65; max-width: 680px; }
.pain-item:hover .pain-sub { color: var(--t2); }

/* ===== CHARTS SECTION ===== */
.charts-section { padding: 100px 0; }
.charts-head { margin-bottom: 56px; }
.charts-head .overline { margin-bottom: 12px; }

.charts-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 16px;
}
.chart-card {
  background: var(--glass-bg);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--r-xl);
  padding: 32px 28px;
  transition: border-color .2s;
}
.chart-card:hover { border-color: var(--glass-border-hi); }
.chart-label {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--t3);
  margin-bottom: 20px;
}
.chart-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--t1);
  margin-bottom: 24px;
  line-height: 1.4;
}

/* Bar chart */
.bar-chart { display: flex; flex-direction: column; gap: 12px; }
.bar-row { display: flex; flex-direction: column; gap: 5px; }
.bar-row-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--t2);
}
.bar-row-label span:last-child { color: var(--t1); font-weight: 600; }
.bar-track {
  height: 8px;
  background: rgba(255,255,255,0.07);
  border-radius: 99px;
  overflow: hidden;
}
.bar-fill {
  height: 100%;
  border-radius: 99px;
  width: 0;
  transition: width 1.2s cubic-bezier(.4,0,.2,1);
}
.bar-fill.before { background: rgba(255,255,255,0.2); }
.bar-fill.after  { background: linear-gradient(90deg, var(--accent), var(--accent2)); }

/* Donut chart */
.donut-wrap {
  display: flex;
  align-items: center;
  gap: 24px;
}
.donut-svg { flex-shrink: 0; transform: rotate(-90deg); }
.donut-bg { fill: none; stroke: rgba(255,255,255,0.07); stroke-width: 10; }
.donut-fill {
  fill: none;
  stroke: url(#donutGrad);
  stroke-width: 10;
  stroke-linecap: round;
  stroke-dasharray: 251;
  stroke-dashoffset: 251;
  transition: stroke-dashoffset 1.4s cubic-bezier(.4,0,.2,1);
}
.donut-center {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}
.donut-pct {
  font-size: 2.4rem;
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.donut-desc { font-size: 0.85rem; color: var(--t2); margin-top: 4px; line-height: 1.4; }

/* Line chart */
.line-chart-wrap { position: relative; }
.line-svg { width: 100%; height: 100px; overflow: visible; }
.line-path {
  fill: none;
  stroke: url(#lineGrad);
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 500;
  stroke-dashoffset: 500;
  transition: stroke-dashoffset 1.6s cubic-bezier(.4,0,.2,1);
}
.line-area {
  opacity: 0;
  transition: opacity 1s ease .4s;
}
.line-labels {
  display: flex;
  justify-content: space-between;
  margin-top: 8px;
  font-size: 0.75rem;
  color: var(--t3);
}

/* Stat cards row */
.stat-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.stat-card {
  background: var(--glass-bg);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--r-xl);
  padding: 28px;
  text-align: center;
  transition: border-color .2s;
}
.stat-card:hover { border-color: var(--glass-border-hi); }
.stat-num {
  font-size: 2.8rem;
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}
.stat-desc { font-size: 0.88rem; color: var(--t2); line-height: 1.5; }
.stat-source { font-size: 0.72rem; color: var(--t3); margin-top: 6px; }

@media (max-width: 768px) {
  .charts-grid { grid-template-columns: 1fr; }
  .stat-row { grid-template-columns: 1fr; }
}

/* ===== STEP MULTIPLE PARAGRAPHS ===== */
.step-content p + p { margin-top: 12px; }

/* ===== DELIVERABLES ===== */
.deliverables { padding: 100px 0; }
.del-head { margin-bottom: 56px; }
.del-head .overline { margin-bottom: 12px; }
.del-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.del-item {
  background: var(--glass-bg);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--r-xl);
  padding: 36px 32px;
  transition: border-color .2s, background .2s;
}
.del-item:hover {
  border-color: var(--glass-border-hi);
  background: var(--glass-bg-hover);
}
.del-icon {
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 16px;
  opacity: .8;
}
.del-item h3 { font-size: 1.05rem; margin-bottom: 10px; }
.del-item p { font-size: 0.92rem; color: var(--t2); line-height: 1.65; }

/* ===== WHY ===== */
.why { padding: 100px 0; }
.why-head { margin-bottom: 56px; }
.why-head .overline { margin-bottom: 12px; }

.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.why-item {
  background: var(--glass-bg);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--r-xl);
  padding: 32px 28px;
  transition: border-color .2s, background .2s;
}
.why-item:hover {
  border-color: var(--glass-border-hi);
  background: var(--glass-bg-hover);
}
.why-icon {
  font-size: 1.4rem;
  margin-bottom: 18px;
  display: block;
}
.why-item h3 { font-size: 1rem; margin-bottom: 8px; }
.why-item p { font-size: 0.9rem; color: var(--t2); line-height: 1.65; }

/* ===== TEAM ===== */
.team { padding: 100px 0; }
.team-head { margin-bottom: 56px; }
.team-head .overline { margin-bottom: 12px; }
.team-grid { display: flex; flex-direction: column; gap: 16px; }

.team-member {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 28px;
  align-items: start;
  background: var(--glass-bg);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--r-xl);
  padding: 32px;
  transition: border-color .2s;
}
.team-member:hover { border-color: var(--glass-border-hi); }
.team-photo {
  width: 96px; height: 96px;
  border-radius: 50%;
  overflow: hidden;
  border: 1.5px solid var(--glass-border-hi);
}
.team-photo img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center top;
}
.team-photo--placeholder {
  background: rgba(124,110,247,0.12);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem; font-weight: 700; color: var(--accent);
}
.team-name { font-size: 1.15rem; font-weight: 700; margin-bottom: 4px; }
.team-role {
  font-size: 0.75rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.09em;
  color: var(--accent); margin-bottom: 12px; opacity: .9;
}
.team-bio { font-size: 0.92rem; color: var(--t2); line-height: 1.65; }

/* ===== CHAT ===== */
.chat-section { padding: 100px 0; }
.chat-head { margin-bottom: 40px; }
.chat-head .overline { margin-bottom: 12px; }
.chat-head .display-sm { margin-bottom: 10px; }
.chat-head .body-lg { font-size: 1rem; }

.chat-box {
  background: var(--glass-bg);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--r-xl);
  overflow: hidden;
}

.chat-messages {
  padding: 40px 28px 28px;
  min-height: 240px;
  max-height: 520px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
  scrollbar-width: thin;
  scrollbar-color: var(--glass-border) transparent;
}

.message-welcome {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 24px 16px 16px;
  gap: 16px;
}
.chat-avatar {
  width: 52px; height: 52px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem;
  box-shadow: 0 6px 24px rgba(124,110,247,.45);
  flex-shrink: 0;
}
.welcome-text strong {
  display: block;
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--t1);
  margin-bottom: 8px;
}
.welcome-text span {
  font-size: 0.97rem;
  color: var(--t2);
  line-height: 1.6;
}

.message { display: flex; }
.message.assistant { justify-content: flex-start; }
.message.user { justify-content: flex-end; }
.message-bubble {
  max-width: 76%;
  padding: 13px 18px;
  font-size: 0.96rem;
  line-height: 1.65;
  white-space: pre-wrap;
  border-radius: var(--r-lg);
}
.message.assistant .message-bubble {
  background: var(--glass-bg-hover);
  border: 1px solid var(--glass-border);
  color: var(--t1);
  border-bottom-left-radius: 4px;
}
.message.user .message-bubble {
  background: linear-gradient(135deg, var(--accent), #5b8ef7);
  color: #fff;
  border-bottom-right-radius: 4px;
  box-shadow: 0 4px 20px rgba(124,110,247,.30);
}
.message.typing .message-bubble {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--t3);
}

.chat-input-wrap {
  display: flex;
  border-top: 1px solid var(--glass-border);
  background: rgba(0,0,0,0.15);
  align-items: flex-end;
}
#chatInput {
  flex: 1;
  border: none; outline: none;
  padding: 18px 22px;
  font-size: 0.97rem;
  font-family: inherit;
  resize: none;
  background: transparent;
  color: var(--t1);
  line-height: 1.5;
}
#chatInput::placeholder { color: var(--t3); }
.btn-send {
  background: linear-gradient(135deg, var(--accent), #5b8ef7);
  color: #fff;
  border: none;
  cursor: pointer;
  margin: 12px;
  padding: 11px 16px;
  border-radius: var(--r-md);
  display: flex; align-items: center; justify-content: center;
  transition: opacity .2s, transform .1s;
  box-shadow: 0 2px 14px rgba(124,110,247,.35);
  flex-shrink: 0;
}
.btn-send:hover { opacity: .85; }
.btn-send:active { transform: scale(.95); }
.btn-send:disabled { opacity: .3; cursor: not-allowed; box-shadow: none; }

/* ===== CTA ===== */
.cta { padding: 100px 0; }
.cta-inner {
  background: var(--glass-bg);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--r-xl);
  padding: 72px 64px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.cta-left .overline { margin-bottom: 16px; }
.cta-left .display-md { margin-bottom: 16px; }
.cta-left .body-lg { font-size: 1rem; }
.lead-form { display: flex; flex-direction: column; gap: 12px; }
.lead-form input {
  padding: 15px 18px;
  border-radius: var(--r-md);
  border: 1px solid var(--glass-border);
  background: rgba(255,255,255,0.05);
  color: var(--t1);
  font-size: 1rem;
  font-family: inherit;
  outline: none;
  transition: border-color .2s, background .2s;
}
.lead-form input::placeholder { color: var(--t3); }
.lead-form input:focus {
  border-color: rgba(124,110,247,.6);
  background: rgba(255,255,255,.08);
}
.form-note { margin-top: 6px; font-size: 0.8rem; color: var(--t3); }

/* ===== FOOTER ===== */
footer {
  border-top: 1px solid var(--glass-border);
  padding: 40px 0;
  text-align: center;
  color: var(--t3);
}
footer .logo { margin-bottom: 8px; font-size: 1.1rem; display: inline-block; }
footer p { font-size: 0.82rem; }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .del-grid { grid-template-columns: 1fr; }

  nav { padding: 16px 20px; }
  .container { padding: 0 20px; }
  .hero { padding: 120px 0 80px; }
  .problem-head { flex-direction: column; gap: 16px; }
  .problem-head .body-lg { max-width: 100%; }
  .step { grid-template-columns: 64px 1fr; gap: 0 20px; }
  .step-num-big { font-size: 3rem; }
  .why-grid { grid-template-columns: 1fr; }
  .team-member { grid-template-columns: 72px 1fr; gap: 20px; padding: 24px; }
  .team-photo { width: 72px; height: 72px; }
  .cta-inner { grid-template-columns: 1fr; gap: 40px; padding: 40px 28px; }
  .message-bubble { max-width: 88%; }
}
@media (max-width: 480px) {
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .step { grid-template-columns: 1fr; }
  .step-num-big { display: none; }
  .team-member { grid-template-columns: 1fr; }
  .team-photo { width: 64px; height: 64px; }
}