/* =============================================
   Push Button Bot — Design Tokens & Styles
   Dark tech aesthetic with electric green accent
   ============================================= */

:root {
  /* Type Scale */
  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem    + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem  + 1.25vw, 2.25rem);
  --text-2xl:  clamp(2rem,     1.2rem  + 2.5vw,  3.5rem);
  --text-3xl:  clamp(2.5rem,   1rem    + 4vw,    5rem);
  --text-hero: clamp(3rem,     0.5rem  + 7vw,    8rem);

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Fonts */
  --font-display: 'Cabinet Grotesk', 'Inter', sans-serif;
  --font-body: 'Satoshi', 'Inter', sans-serif;

  /* Dark palette — only mode for this brand */
  --color-bg: #08080d;
  --color-surface: #0f0f16;
  --color-surface-2: #14141e;
  --color-surface-3: #1a1a27;
  --color-border: #252535;
  --color-border-subtle: #1c1c2c;
  --color-text: #e8e8f0;
  --color-text-muted: #8888a0;
  --color-text-faint: #55556a;
  --color-primary: #00ff88;
  --color-primary-dim: #00cc6e;
  --color-primary-glow: rgba(0, 255, 136, 0.15);
  --color-primary-glow-strong: rgba(0, 255, 136, 0.3);
  --color-accent-2: #6366f1;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 40px rgba(0, 255, 136, 0.12);
  --shadow-glow-strong: 0 0 60px rgba(0, 255, 136, 0.2), 0 0 120px rgba(0, 255, 136, 0.08);

  /* Content widths */
  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;
}

/* =============================================
   Layout
   ============================================= */

.container {
  width: 100%;
  max-width: var(--content-wide);
  margin: 0 auto;
  padding-inline: var(--space-6);
}

.container--narrow {
  max-width: var(--content-default);
}

/* =============================================
   Header / Nav
   ============================================= */

.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(8, 8, 13, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border-subtle);
  transition: box-shadow 300ms var(--ease-out);
}

.header--scrolled {
  box-shadow: 0 1px 20px rgba(0, 255, 136, 0.06);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text);
}

.logo__icon {
  width: 36px;
  height: 36px;
}

.logo__text {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.logo__text span {
  color: var(--color-primary);
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav__links {
  display: flex;
  gap: var(--space-6);
  list-style: none;
}

.nav__link {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition-interactive);
}

.nav__link:hover {
  color: var(--color-text);
}

.nav__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-bg);
  background: var(--color-primary);
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-full);
  text-decoration: none;
  transition: background var(--transition-interactive),
              transform var(--transition-interactive),
              box-shadow var(--transition-interactive);
}

.nav__cta:hover {
  background: var(--color-primary-dim);
  transform: translateY(-1px);
  box-shadow: var(--shadow-glow);
}

.nav__cta:active {
  transform: translateY(0);
}

/* Mobile nav toggle */
.nav__toggle {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  color: var(--color-text);
}

@media (max-width: 768px) {
  .nav__links { display: none; }
  .nav__toggle { display: flex; }
  .nav__cta { font-size: var(--text-xs); padding: var(--space-2) var(--space-4); }
}

/* =============================================
   Hero
   ============================================= */

.hero {
  position: relative;
  padding: clamp(var(--space-16), 12vw, var(--space-32)) 0 clamp(var(--space-12), 8vw, var(--space-24));
  overflow: hidden;
  text-align: center;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.hero__grid {
  position: absolute;
  inset: -50%;
  background-image:
    linear-gradient(rgba(0, 255, 136, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 255, 136, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  transform: perspective(500px) rotateX(60deg);
  mask-image: radial-gradient(ellipse 80% 50% at 50% 50%, black 30%, transparent 70%);
}

.hero__glow {
  position: absolute;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 600px;
  background: radial-gradient(ellipse, rgba(0, 255, 136, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-6);
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-primary);
  background: var(--color-primary-glow);
  border: 1px solid rgba(0, 255, 136, 0.2);
  padding: var(--space-1) var(--space-4);
  border-radius: var(--radius-full);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.hero__badge .pulse {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(0, 255, 136, 0.4); }
  50% { opacity: 0.7; box-shadow: 0 0 0 8px rgba(0, 255, 136, 0); }
}

.hero__title {
  font-family: var(--font-display);
  font-size: var(--text-hero);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.05;
  color: var(--color-text);
  max-width: 14ch;
}

.hero__title .highlight {
  background: linear-gradient(135deg, var(--color-primary) 0%, #00ddaa 50%, var(--color-primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 48ch;
  line-height: 1.6;
}

.hero__actions {
  display: flex;
  gap: var(--space-4);
  margin-top: var(--space-4);
  flex-wrap: wrap;
  justify-content: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--text-sm);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: background var(--transition-interactive),
              color var(--transition-interactive),
              transform var(--transition-interactive),
              box-shadow var(--transition-interactive);
}

.btn--primary {
  color: var(--color-bg);
  background: var(--color-primary);
}

.btn--primary:hover {
  background: var(--color-primary-dim);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow-strong);
}

.btn--primary:active {
  transform: translateY(0);
}

.btn--secondary {
  color: var(--color-text);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
}

.btn--secondary:hover {
  background: var(--color-surface-3);
  border-color: var(--color-text-faint);
  transform: translateY(-2px);
}

.btn--secondary:active {
  transform: translateY(0);
}

/* Push button visual */
.hero__button-visual {
  position: relative;
  margin-top: var(--space-8);
  width: 200px;
  height: 200px;
}

.push-btn {
  position: relative;
  width: 200px;
  height: 200px;
  cursor: pointer;
}

.push-btn__outer {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: linear-gradient(180deg, #1a1a2e 0%, #0d0d1a 100%);
  border: 2px solid var(--color-border);
  box-shadow:
    0 0 60px rgba(0, 255, 136, 0.06),
    inset 0 2px 4px rgba(255,255,255,0.03);
}

.push-btn__inner {
  position: absolute;
  top: 20px;
  left: 20px;
  right: 20px;
  bottom: 20px;
  border-radius: 50%;
  background: linear-gradient(180deg, #151525 0%, #0a0a18 100%);
  border: 1px solid rgba(0, 255, 136, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 300ms var(--ease-out);
  box-shadow: inset 0 -4px 12px rgba(0,0,0,0.5);
}

.push-btn__glow {
  position: absolute;
  inset: -20px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 255, 136, 0.12) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 400ms var(--ease-out);
  pointer-events: none;
}

.push-btn:hover .push-btn__glow {
  opacity: 1;
}

.push-btn:hover .push-btn__inner {
  border-color: rgba(0, 255, 136, 0.35);
  box-shadow: inset 0 -4px 12px rgba(0,0,0,0.5), 0 0 30px rgba(0, 255, 136, 0.15);
}

.push-btn__label {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-sm);
  color: var(--color-primary);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-shadow: 0 0 20px rgba(0, 255, 136, 0.4);
}

.push-btn.active .push-btn__inner {
  background: linear-gradient(180deg, #0a1a12 0%, #051510 100%);
  border-color: var(--color-primary);
  box-shadow:
    inset 0 0 30px rgba(0, 255, 136, 0.15),
    0 0 40px rgba(0, 255, 136, 0.2);
}

.push-btn.active .push-btn__glow {
  opacity: 1;
  background: radial-gradient(circle, rgba(0, 255, 136, 0.25) 0%, transparent 60%);
}

.push-btn.active .push-btn__label {
  text-shadow: 0 0 30px rgba(0, 255, 136, 0.6);
}

/* =============================================
   Section Shared
   ============================================= */

.section {
  padding: clamp(var(--space-12), 8vw, var(--space-24)) 0;
}

.section__header {
  text-align: center;
  margin-bottom: clamp(var(--space-10), 5vw, var(--space-16));
}

.section__label {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-3);
}

.section__title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin-bottom: var(--space-4);
}

.section__desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 56ch;
  margin: 0 auto;
}

/* =============================================
   What It Does — Capabilities
   ============================================= */

.capabilities-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

@media (max-width: 900px) {
  .capabilities-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .capabilities-grid { grid-template-columns: 1fr; }
}

.cap-card {
  padding: var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-xl);
  transition: border-color var(--transition-interactive),
              box-shadow var(--transition-interactive),
              transform var(--transition-interactive);
}

.cap-card:hover {
  border-color: var(--color-border);
  box-shadow: 0 0 30px rgba(0, 255, 136, 0.04);
  transform: translateY(-2px);
}

.cap-card__icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-lg);
  background: var(--color-primary-glow);
  border: 1px solid rgba(0, 255, 136, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
  color: var(--color-primary);
}

.cap-card__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.cap-card__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
}

/* =============================================
   How It Works — Steps
   ============================================= */

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
  position: relative;
}

.steps::before {
  content: '';
  position: absolute;
  top: 28px;
  left: calc(16.67% + 28px);
  right: calc(16.67% + 28px);
  height: 2px;
  background: linear-gradient(90deg, var(--color-border), var(--color-primary), var(--color-border));
  opacity: 0.3;
}

@media (max-width: 768px) {
  .steps { grid-template-columns: 1fr; gap: var(--space-6); }
  .steps::before { display: none; }
}

.step {
  text-align: center;
  position: relative;
}

.step__number {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-5);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-lg);
  color: var(--color-primary);
  position: relative;
  z-index: 1;
}

.step__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.step__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  max-width: 32ch;
  margin: 0 auto;
  line-height: 1.65;
}

/* =============================================
   Self-Replicating Feature
   ============================================= */

.replicate {
  position: relative;
  overflow: hidden;
}

.replicate__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
}

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

.replicate__content {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.replicate__title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-text);
}

.replicate__title .highlight {
  color: var(--color-primary);
}

.replicate__desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
}

.replicate__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.replicate__list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

.replicate__list li svg {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  color: var(--color-primary);
  margin-top: 2px;
}

/* Bot network visual */
.replicate__visual {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  min-height: 400px;
}

.bot-network {
  position: relative;
  width: 340px;
  height: 340px;
}

.bot-node {
  position: absolute;
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  transition: all 400ms var(--ease-out);
}

.bot-node--center {
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 88px;
  height: 88px;
  border-color: var(--color-primary);
  background: var(--color-surface-2);
  box-shadow: var(--shadow-glow);
  font-size: 36px;
  z-index: 2;
}

.bot-node--1 { top: 0; left: 50%; transform: translateX(-50%); }
.bot-node--2 { top: 20%; right: 0; }
.bot-node--3 { bottom: 20%; right: 0; }
.bot-node--4 { bottom: 0; left: 50%; transform: translateX(-50%); }
.bot-node--5 { bottom: 20%; left: 0; }
.bot-node--6 { top: 20%; left: 0; }

.bot-node:not(.bot-node--center):hover {
  border-color: var(--color-primary);
  box-shadow: 0 0 20px rgba(0, 255, 136, 0.12);
}

/* Connection lines via SVG */
.bot-lines {
  position: absolute;
  inset: 0;
  z-index: 1;
}

/* =============================================
   Use Cases
   ============================================= */

.usecases-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

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

.usecase {
  padding: var(--space-6) var(--space-8);
  background: var(--color-surface);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: flex-start;
  gap: var(--space-5);
  transition: border-color var(--transition-interactive);
}

.usecase:hover {
  border-color: var(--color-border);
}

.usecase__icon {
  font-size: 2rem;
  line-height: 1;
  flex-shrink: 0;
}

.usecase__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.usecase__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
}

/* =============================================
   Pricing / CTA
   ============================================= */

.cta-section {
  text-align: center;
  position: relative;
}

.cta-section__bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 50% at 50% 50%, rgba(0, 255, 136, 0.04) 0%, transparent 70%);
  pointer-events: none;
}

.cta-section__content {
  position: relative;
  z-index: 1;
}

.cta-section .section__title {
  max-width: 18ch;
  margin-inline: auto;
}

.cta__price {
  margin: var(--space-6) 0;
}

.cta__price-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-2);
}

.cta__price-value {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--color-text);
}

.cta__price-value .green {
  color: var(--color-primary);
}

.cta__price-note {
  font-size: var(--text-sm);
  color: var(--color-text-faint);
  margin-top: var(--space-2);
}

.cta__features {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-3) var(--space-6);
  margin: var(--space-6) auto;
  max-width: 600px;
}

.cta__features li {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.cta__features li svg {
  width: 16px;
  height: 16px;
  color: var(--color-primary);
}

/* =============================================
   FAQ
   ============================================= */

.faq-list {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.faq-item {
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-surface);
}

.faq-item__q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-5);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  text-align: left;
  cursor: pointer;
  background: none;
  border: none;
  transition: color var(--transition-interactive);
}

.faq-item__q:hover {
  color: var(--color-primary);
}

.faq-item__q svg {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  color: var(--color-text-faint);
  transition: transform 300ms var(--ease-out);
}

.faq-item.open .faq-item__q svg {
  transform: rotate(45deg);
}

.faq-item__a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 400ms var(--ease-out);
}

.faq-item.open .faq-item__a {
  max-height: 300px;
}

.faq-item__a-inner {
  padding: 0 var(--space-5) var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* =============================================
   Footer
   ============================================= */

.footer {
  border-top: 1px solid var(--color-border-subtle);
  padding: var(--space-8) 0;
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer__copy {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.footer__links {
  display: flex;
  gap: var(--space-6);
  list-style: none;
}

.footer__links a {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-decoration: none;
  transition: color var(--transition-interactive);
}

.footer__links a:hover {
  color: var(--color-text-muted);
}

.footer__powered {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.footer__powered a {
  color: var(--color-text-faint);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color var(--transition-interactive);
}

.footer__powered a:hover {
  color: var(--color-text-muted);
}

/* =============================================
   Scroll Animations
   ============================================= */

.fade-in {
  opacity: 1;
}

@supports (animation-timeline: scroll()) {
  .fade-in {
    opacity: 0;
    animation: reveal-fade linear both;
    animation-timeline: view();
    animation-range: entry 0% entry 100%;
  }
}

@keyframes reveal-fade {
  to { opacity: 1; }
}

/* Divider */
.divider {
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-border), transparent);
}