/* ============================================
   PreciseFuture Platform — Landing Page
   Design tokens + components
   ============================================ */

:root {
  /* Primary */
  --color-primary: #1A6C7A;
  --color-primary-light: #2B8D9D;
  --color-primary-dark: #0E4E5A;

  /* Secondary */
  --color-secondary: #D4942A;
  --color-secondary-light: #E8B35E;

  /* Accent */
  --color-accent: #3BBCD4;

  /* Semantic */
  --color-success: #16A34A;
  --color-error: #DC2626;
  --color-warning: #EAB308;

  /* Neutrals */
  --color-bg: #F8FAFC;
  --color-surface: #FFFFFF;
  --color-surface-hover: #F1F5F9;
  --color-border: #E2E8F0;
  --color-text: #0F172A;
  --color-text-secondary: #475569;
  --color-text-muted: #94A3B8;

  /* Spacing */
  --space-xxs: 4px;
  --space-xs: 8px;
  --space-sm: 12px;
  --space-md: 16px;
  --space-lg: 20px;
  --space-xl: 24px;
  --space-2xl: 32px;
  --space-3xl: 40px;
  --space-4xl: 48px;
  --space-5xl: 64px;
  --space-6xl: 80px;

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-pill: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.07);
  --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);

  /* Font */
  --font-sans: 'Poppins', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--color-primary); text-decoration: none; }
a:hover { color: var(--color-primary-light); }
img { max-width: 100%; height: auto; }
ul { list-style: none; }

/* ---- Container ---- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

/* ---- Navbar ---- */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 64px;
  background: var(--color-surface);
  border-bottom: 1px solid transparent;
  z-index: 100;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.navbar.scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}
.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.navbar-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: 600;
  font-size: 18px;
  color: var(--color-primary-dark);
}
.navbar-logo svg {
  width: 32px;
  height: 32px;
}
.navbar-links {
  display: flex;
  align-items: center;
  gap: var(--space-2xl);
}
.navbar-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color 0.15s;
}
.navbar-links a:hover { color: var(--color-primary); }
.navbar-cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-xs) var(--space-lg);
  background: var(--color-primary);
  color: #fff !important;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
  transition: background 0.15s;
}
.navbar-cta:hover { background: var(--color-primary-light); color: #fff !important; }

.navbar-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-xs);
}
.navbar-toggle svg { width: 24px; height: 24px; stroke: var(--color-text); }

/* ---- Hero ---- */
.hero {
  padding: 140px 0 var(--space-6xl);
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, var(--color-accent) 100%);
  color: #fff;
  text-align: center;
}
.hero h1 {
  font-size: 48px;
  font-weight: 700;
  line-height: 1.15;
  max-width: 800px;
  margin: 0 auto var(--space-xl);
}
.hero p {
  font-size: 20px;
  line-height: 1.6;
  max-width: 600px;
  margin: 0 auto var(--space-3xl);
  opacity: 0.9;
}
.hero-buttons {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-xl);
  border-radius: var(--radius-md);
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: all 0.15s;
}
.btn-primary {
  background: #fff;
  color: var(--color-primary-dark);
}
.btn-primary:hover { background: var(--color-surface-hover); color: var(--color-primary-dark); }
.btn-outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255,255,255,0.5);
}
.btn-outline:hover { border-color: #fff; color: #fff; }
.btn-submit {
  background: var(--color-primary);
  color: #fff;
  width: 100%;
  justify-content: center;
  padding: var(--space-md);
  font-size: 16px;
}
.btn-submit:hover { background: var(--color-primary-light); }
.btn-submit:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ---- Section ---- */
.section {
  padding: var(--space-6xl) 0;
}
.section-alt {
  background: var(--color-surface);
}
.section-title {
  font-size: 36px;
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--space-md);
  color: var(--color-text);
}
.section-subtitle {
  font-size: 18px;
  text-align: center;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto var(--space-4xl);
}

/* ---- Features ---- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}
.feature-card {
  padding: var(--space-2xl);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: box-shadow 0.2s, transform 0.2s;
}
.feature-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.feature-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
}
.feature-icon svg { width: 24px; height: 24px; }
.feature-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: var(--space-xs);
}
.feature-card p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ---- Products ---- */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-xl);
}
.product-card {
  padding: var(--space-2xl);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
}
.product-badge {
  display: inline-block;
  padding: var(--space-xxs) var(--space-sm);
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 500;
  margin-bottom: var(--space-md);
  width: fit-content;
}
.badge-saas { background: #DBEAFE; color: #1D4ED8; }
.badge-internal { background: #FEF9C3; color: #A16207; }
.badge-coming { background: var(--color-surface-hover); color: var(--color-text-muted); }
.product-card h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: var(--space-xs);
  color: var(--color-text);
}
.product-card p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  flex-grow: 1;
}

/* ---- How it works ---- */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
  counter-reset: step;
}
.step {
  text-align: center;
  counter-increment: step;
  position: relative;
}
.step::before {
  content: counter(step);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 50%;
  font-size: 20px;
  font-weight: 700;
  margin: 0 auto var(--space-md);
}
.step h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: var(--space-xs);
}
.step p {
  font-size: 14px;
  color: var(--color-text-secondary);
}

/* ---- Contact ---- */
.contact-wrapper {
  max-width: 600px;
  margin: 0 auto;
}
.form-group {
  margin-bottom: var(--space-md);
}
.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: var(--space-xxs);
  color: var(--color-text);
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-size: 14px;
  background: var(--color-surface-hover);
  color: var(--color-text);
  transition: border-color 0.15s;
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  background: var(--color-surface);
}
.form-group textarea {
  resize: vertical;
  min-height: 100px;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}
.form-success {
  text-align: center;
  padding: var(--space-3xl);
  display: none;
}
.form-success svg {
  width: 64px;
  height: 64px;
  color: var(--color-success);
  margin-bottom: var(--space-md);
}
.form-success h3 {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: var(--space-xs);
}
.form-success p {
  color: var(--color-text-secondary);
}
.form-error {
  background: #FEE2E2;
  color: var(--color-error);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  font-size: 14px;
  margin-bottom: var(--space-md);
  display: none;
}

/* ---- Footer ---- */
.footer {
  background: var(--color-primary-dark);
  color: rgba(255,255,255,0.8);
  padding: var(--space-4xl) 0 var(--space-xl);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-3xl);
  margin-bottom: var(--space-3xl);
}
.footer-brand h3 {
  font-size: 20px;
  font-weight: 600;
  color: #fff;
  margin-bottom: var(--space-sm);
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.6;
  max-width: 360px;
}
.footer-links h4 {
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  margin-bottom: var(--space-md);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.footer-links a {
  display: block;
  font-size: 14px;
  color: rgba(255,255,255,0.7);
  margin-bottom: var(--space-xs);
}
.footer-links a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.15);
  padding-top: var(--space-xl);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .hero h1 { font-size: 32px; }
  .hero p { font-size: 16px; }
  .section-title { font-size: 28px; }
  .navbar-links { display: none; }
  .navbar-toggle { display: block; }
  .navbar-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px; left: 0; right: 0;
    background: var(--color-surface);
    padding: var(--space-xl);
    gap: var(--space-md);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
  }
}
@media (max-width: 640px) {
  .hero { padding: 100px 0 var(--space-4xl); }
  .hero h1 { font-size: 28px; }
  .features-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: var(--space-sm); text-align: center; }
}