/* ── VARIABLES ── */
:root {
  --accent:       #2ea043;
  --accent-glow:  rgba(46, 160, 67, 0.25);
  --accent-dim:   rgba(46, 160, 67, 0.15);
  --bg:           #0d1117;
  --bg-surface:   #161b22;
  --bg-card:      #1c2128;
  --border:       rgba(46, 160, 67, 0.2);
  --text:         #e6edf3;
  --text-muted:   #7d8590;
  --text-dim:     #484f58;
  --font:         'Inter', system-ui, -apple-system, sans-serif;
  --radius:       8px;
  --radius-lg:    16px;
  --transition:   0.2s ease;
  --max-width:    1100px;
}

/* ── RESET ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── TYPOGRAPHY ── */
h1 { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 700; line-height: 1.15; letter-spacing: -0.02em; }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); font-weight: 700; line-height: 1.2; letter-spacing: -0.01em; }
h3 { font-size: 1.125rem; font-weight: 600; line-height: 1.3; }
p  { color: var(--text-muted); line-height: 1.7; }

/* ── LAYOUT UTILITIES ── */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}
.section { padding: 5rem 0; }
.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}
.section-header { max-width: 640px; margin-bottom: 3rem; }
.section-header h2 { margin-bottom: 0.75rem; }
.accent { color: var(--accent); }
.text-center { text-align: center; }
.text-center .section-header { margin-left: auto; margin-right: auto; }

/* ── BUTTONS ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 0 20px var(--accent-glow);
}
.btn-primary:hover {
  background: #3fb950;
  box-shadow: 0 0 32px var(--accent-glow);
  transform: translateY(-1px);
  text-decoration: none;
  color: #fff;
}
.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  text-decoration: none;
}
.btn-lg { padding: 1rem 2rem; font-size: 1.0625rem; }

/* ── NAVBAR ── */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: 64px;
  display: flex;
  align-items: center;
  background: rgba(13, 17, 23, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition);
}
#navbar.scrolled { border-bottom-color: var(--border); }
#navbar .container {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.01em;
}
.nav-logo span { color: var(--accent); }
.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}
.nav-links a {
  font-size: 0.875rem;
  color: var(--text-muted);
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--text); text-decoration: none; }
.nav-cta { display: none; }
@media (min-width: 768px) { .nav-cta { display: inline-flex; } }
.nav-mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  cursor: pointer;
  font-size: 1.5rem;
}
@media (max-width: 767px) {
  .nav-links { display: none; }
  .nav-mobile-toggle { display: block; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 64px; left: 0; right: 0;
    background: var(--bg-surface);
    padding: 1.5rem;
    border-bottom: 1px solid var(--border);
    gap: 1.25rem;
    align-items: flex-start;
  }
}

/* ── HERO ── */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 64px;
  position: relative;
  overflow: hidden;
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--accent-dim) 1px, transparent 1px),
    linear-gradient(90deg, var(--accent-dim) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 30%, transparent 100%);
  opacity: 0.3;
  pointer-events: none;
}
.hero-glow {
  position: absolute;
  top: -200px; left: 50%;
  transform: translateX(-50%);
  width: 600px; height: 600px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}
.hero-content {
  position: relative;
  z-index: 1;
  max-width: 760px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--accent-dim);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.35rem 0.875rem;
  font-size: 0.8125rem;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 1.5rem;
}
.hero-badge::before {
  content: '';
  width: 6px; height: 6px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 6px var(--accent);
}
.hero-content h1 { margin-bottom: 1.25rem; }
.hero-content h1 em { font-style: normal; color: var(--accent); }
.hero-content > p {
  font-size: 1.125rem;
  max-width: 560px;
  margin-bottom: 2rem;
}
.hero-cta-group {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}
.hero-trust { display: flex; gap: 1.5rem; flex-wrap: wrap; }
.trust-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8125rem;
  color: var(--text-muted);
}
.trust-item::before { content: '✓'; color: var(--accent); font-weight: 700; }

/* ── PROBLEM ── */
#problem {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.problem-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}
.problem-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.problem-card:hover {
  border-color: var(--accent);
  box-shadow: 0 0 24px var(--accent-glow);
}
.problem-number {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.1em;
  margin-bottom: 0.75rem;
}
.problem-card h3 { margin-bottom: 0.5rem; color: var(--text); }

/* ── SOLUTION ── */
.solution-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}
.solution-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
}
.solution-card h3 { margin-bottom: 0.5rem; color: var(--accent); }

/* ── HOW IT WORKS ── */
#how {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
}
.step { display: flex; flex-direction: column; gap: 0.75rem; }
.step-number {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--accent-dim);
  border: 1px solid var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--accent);
}
.step h3 { color: var(--text); }
.how-footer {
  margin-top: 3rem;
  text-align: center;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--accent);
}

/* ── PRODUCT DEMO ── */
.screenshot-stack {
  position: relative;
  height: 420px;
  max-width: 860px;
  margin: 0 auto 2.5rem;
}
.screenshot-stack .screen {
  position: absolute;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  overflow: hidden;
  box-shadow: 0 24px 64px rgba(0,0,0,0.5);
  background: var(--bg-card);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-dim);
  font-size: 0.875rem;
}
.screen-1 {
  width: 72%; height: 75%;
  top: 0; left: 0; z-index: 3;
  animation: float1 6s ease-in-out infinite;
}
.screen-2 {
  width: 65%; height: 65%;
  top: 15%; right: 0; z-index: 2;
  animation: float2 6s ease-in-out infinite;
  border-color: var(--accent);
  box-shadow: 0 0 40px var(--accent-glow), 0 24px 64px rgba(0,0,0,0.5);
}
.screen-3 {
  width: 50%; height: 40%;
  bottom: 0; left: 15%; z-index: 1;
  animation: float3 6s ease-in-out infinite;
}
@keyframes float1 { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-8px)} }
@keyframes float2 { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-12px)} }
@keyframes float3 { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-6px)} }
.screen img { width: 100%; height: 100%; object-fit: cover; }
.demo-cta { text-align: center; }
.demo-cta p { margin-bottom: 1rem; }

/* ── FOR WHOM ── */
#forwho {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.persona-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}
.persona-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
}
.persona-role {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.5rem;
}
.persona-card h3 { color: var(--text); margin-bottom: 0.5rem; }

/* ── CTA SECTION ── */
#cta { position: relative; overflow: hidden; }
.cta-glow {
  position: absolute;
  bottom: -200px; left: 50%;
  transform: translateX(-50%);
  width: 800px; height: 400px;
  background: radial-gradient(ellipse, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}
.cta-box {
  position: relative;
  z-index: 1;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 4rem 2rem;
  text-align: center;
  max-width: 640px;
  margin: 0 auto;
  box-shadow: 0 0 60px var(--accent-glow);
}
.cta-box h2 { margin-bottom: 0.75rem; }
.cta-box p  { margin-bottom: 2rem; font-size: 1.0625rem; }
.cta-meta { margin-top: 1rem; font-size: 0.8125rem; color: var(--text-dim); }

/* ── FOOTER ── */
footer {
  background: var(--bg);
  border-top: 1px solid var(--border);
  padding: 2.5rem 0;
}
.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  text-align: center;
}
.footer-label {
  font-size: 0.8125rem;
  color: var(--text-muted);
}
.footer-email-form {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  justify-content: center;
}
.footer-email-form input {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.6rem 1rem;
  color: var(--text);
  font-size: 0.875rem;
  width: 240px;
  outline: none;
  transition: border-color var(--transition);
}
.footer-email-form input:focus { border-color: var(--accent); }
.footer-email-form input::placeholder { color: var(--text-dim); }
.footer-email-form button {
  padding: 0.6rem 1.25rem;
  background: var(--accent-dim);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--accent);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
}
.footer-email-form button:hover {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.footer-links {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  justify-content: center;
}
.footer-links a { font-size: 0.8125rem; color: var(--text-dim); }
.footer-links a:hover { color: var(--text-muted); }
.footer-copy { font-size: 0.8125rem; color: var(--text-dim); }

/* ── TOAST ── */
.toast {
  position: fixed;
  bottom: 2rem; right: 2rem;
  background: var(--bg-card);
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  padding: 1rem 1.5rem;
  color: var(--text);
  font-size: 0.875rem;
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.3s ease;
  z-index: 999;
}
.toast.show { transform: translateY(0); opacity: 1; }

/* ── MODAL ── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}
.modal-overlay.open {
  opacity: 1;
  pointer-events: auto;
}
.modal {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  width: 100%;
  max-width: 480px;
  box-shadow: 0 0 60px var(--accent-glow), 0 32px 64px rgba(0,0,0,0.5);
  transform: translateY(16px);
  transition: transform 0.25s ease;
  position: relative;
}
.modal-overlay.open .modal {
  transform: translateY(0);
}
.modal-close {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1.25rem;
  line-height: 1;
  padding: 0.25rem;
  transition: color var(--transition);
}
.modal-close:hover { color: var(--text); }
.modal h3 {
  font-size: 1.25rem;
  margin-bottom: 0.375rem;
  color: var(--text);
}
.modal > p {
  font-size: 0.875rem;
  margin-bottom: 1.75rem;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
  margin-bottom: 1.125rem;
}
.form-group label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-muted);
}
.form-group input,
.form-group textarea {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.65rem 1rem;
  color: var(--text);
  font-size: 0.9375rem;
  font-family: var(--font);
  outline: none;
  transition: border-color var(--transition);
  width: 100%;
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
}
.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-dim);
}
.form-group textarea {
  resize: vertical;
  min-height: 110px;
  line-height: 1.6;
}
.char-count {
  font-size: 0.75rem;
  color: var(--text-dim);
  text-align: right;
  margin-top: 0.25rem;
}
.char-count.warn { color: #e3b341; }
.char-count.over { color: #f85149; }
.optional-label {
  font-size: 0.75rem;
  color: var(--text-dim);
  font-weight: 400;
  margin-left: 0.25rem;
}
.modal-submit {
  width: 100%;
  margin-top: 0.5rem;
  justify-content: center;
}
.modal-success {
  text-align: center;
  padding: 1rem 0;
  display: none;
}
.modal-success .success-icon {
  font-size: 2.5rem;
  margin-bottom: 0.75rem;
}
.modal-success h3 { margin-bottom: 0.5rem; }

/* ── SCROLL TO TOP ── */
#scrollTop {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--accent);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 20px var(--accent-glow);
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.3s ease, transform 0.3s ease, background 0.2s ease;
  pointer-events: none;
  z-index: 90;
}
#scrollTop.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
#scrollTop:hover {
  background: #3fb950;
  box-shadow: 0 0 32px var(--accent-glow);
}
#scrollTop svg {
  width: 18px;
  height: 18px;
  stroke: #fff;
  stroke-width: 2.5;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}