/* XtimatePro - Main stylesheet
   Brand: deep indigo + amber accent
   Stack: vanilla CSS, mobile-first, no framework dependencies */

:root {
  --color-primary: #4F46E5;
  --color-primary-dark: #4338CA;
  --color-primary-light: #818CF8;
  --color-accent: #F59E0B;
  --color-accent-dark: #D97706;
  --color-success: #10B981;
  --color-danger: #EF4444;
  --color-warning: #F59E0B;
  --color-bg: #FFFFFF;
  --color-bg-soft: #F8FAFC;
  --color-bg-muted: #F1F5F9;
  --color-text: #0F172A;
  --color-text-muted: #475569;
  --color-text-soft: #94A3B8;
  --color-border: #E2E8F0;
  --color-border-strong: #CBD5E1;

  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow: 0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.1), 0 4px 6px -4px rgba(15, 23, 42, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.1), 0 8px 10px -6px rgba(15, 23, 42, 0.05);

  --radius-sm: 4px;
  --radius: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  --font: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  --container: 1180px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: var(--font);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--color-primary); text-decoration: none; }
a:hover { color: var(--color-primary-dark); }

h1, h2, h3, h4, h5 { margin: 0 0 0.5em; line-height: 1.2; font-weight: 700; letter-spacing: -0.02em; }
h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.25rem); }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }
p { margin: 0 0 1em; }

/* === Layout === */
.container { max-width: var(--container); margin: 0 auto; padding: 0 1.25rem; }
.section { padding: 4rem 0; }
.section-tight { padding: 2rem 0; }

/* === Header === */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.875rem 1.25rem;
  max-width: var(--container);
  margin: 0 auto;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--color-text);
  letter-spacing: -0.03em;
}
.brand__mark {
  display: inline-grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #fff;
  font-weight: 900;
  font-size: 0.95rem;
}
.nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}
.nav__link {
  color: var(--color-text-muted);
  font-weight: 500;
  font-size: 0.95rem;
}
.nav__link:hover { color: var(--color-text); }

.nav__toggle {
  display: none;
  background: none;
  border: 0;
  cursor: pointer;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
}
.nav__toggle span,
.nav__toggle span::before,
.nav__toggle span::after {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  position: relative;
  transition: 0.2s;
}
.nav__toggle span::before { content: ''; position: absolute; top: -7px; }
.nav__toggle span::after { content: ''; position: absolute; top: 7px; }

@media (max-width: 768px) {
  .nav__toggle { display: inline-flex; }
  .nav { display: none; }
  .nav--open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #fff;
    padding: 1rem 1.25rem 1.5rem;
    border-bottom: 1px solid var(--color-border);
    align-items: flex-start;
    gap: 1rem;
  }
}

/* === Buttons === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  cursor: pointer;
  transition: 0.15s;
  white-space: nowrap;
  line-height: 1;
}
.btn:hover { transform: translateY(-1px); }
.btn--primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 4px 14px rgba(79, 70, 229, 0.35);
}
.btn--primary:hover { background: var(--color-primary-dark); color: #fff; box-shadow: 0 6px 18px rgba(79, 70, 229, 0.45); }
.btn--accent {
  background: var(--color-accent);
  color: #fff;
}
.btn--accent:hover { background: var(--color-accent-dark); color: #fff; }
.btn--ghost {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border-strong);
}
.btn--ghost:hover { background: var(--color-bg-soft); color: var(--color-text); }
.btn--lg { padding: 1rem 2rem; font-size: 1.05rem; }
.btn--sm { padding: 0.5rem 0.875rem; font-size: 0.875rem; }
.btn--block { width: 100%; }
.btn[disabled] { opacity: 0.55; cursor: not-allowed; transform: none; }

/* === Hero === */
.hero {
  position: relative;
  padding: 5rem 0 4rem;
  background:
    radial-gradient(circle at 10% 20%, rgba(79, 70, 229, 0.08), transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(245, 158, 11, 0.08), transparent 50%),
    var(--color-bg);
}
.hero__grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 3rem;
  align-items: center;
}
@media (max-width: 900px) { .hero__grid { grid-template-columns: 1fr; gap: 2rem; } }

.eyebrow {
  display: inline-block;
  padding: 0.375rem 0.75rem;
  background: var(--color-bg-muted);
  color: var(--color-primary);
  font-size: 0.825rem;
  font-weight: 600;
  border-radius: 100px;
  margin-bottom: 1rem;
  letter-spacing: 0.02em;
}
.hero__title {
  font-size: clamp(2.25rem, 5.5vw, 3.75rem);
  font-weight: 800;
  line-height: 1.05;
  margin-bottom: 1rem;
  letter-spacing: -0.03em;
}
.hero__sub {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  max-width: 36rem;
  margin-bottom: 2rem;
}
.hero__ctas {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}
.hero__proof {
  display: flex;
  gap: 1.5rem;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  flex-wrap: wrap;
}
.hero__proof span::before {
  content: '✓';
  color: var(--color-success);
  font-weight: 700;
  margin-right: 0.5rem;
}

/* Hero visual / mock card */
.hero__visual {
  background: linear-gradient(135deg, #4F46E5 0%, #6366F1 50%, #F59E0B 100%);
  border-radius: var(--radius-xl);
  padding: 1.25rem;
  box-shadow: var(--shadow-xl);
}
.hero__visual-inner {
  background: #fff;
  border-radius: var(--radius);
  padding: 1.25rem;
}
.mock-estimate__head {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.875rem;
  padding-bottom: 0.875rem;
  border-bottom: 1px solid var(--color-border);
}
.mock-estimate__title { font-weight: 700; font-size: 1.05rem; }
.mock-estimate__id { color: var(--color-text-soft); font-size: 0.85rem; }
.mock-estimate__line {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 0.5rem;
  padding: 0.5rem 0;
  border-bottom: 1px dashed var(--color-border);
  font-size: 0.875rem;
}
.mock-estimate__line:last-of-type { border-bottom: 0; }
.mock-estimate__total {
  display: flex;
  justify-content: space-between;
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 2px solid var(--color-text);
  font-weight: 700;
  font-size: 1.05rem;
}
.mock-estimate__sign {
  margin-top: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.625rem 0.875rem;
  background: var(--color-bg-muted);
  border-radius: var(--radius);
  font-size: 0.85rem;
}

/* === Cards / Features === */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}
.feature {
  padding: 1.75rem;
  background: var(--color-bg-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}
.feature__icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  background: rgba(79, 70, 229, 0.1);
  color: var(--color-primary);
  font-size: 1.4rem;
  margin-bottom: 1rem;
}
.feature h3 { font-size: 1.1rem; margin-bottom: 0.5rem; }
.feature p { color: var(--color-text-muted); font-size: 0.95rem; margin: 0; }

/* === Pricing === */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  max-width: 980px;
  margin: 0 auto;
}
.plan {
  background: #fff;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  display: flex;
  flex-direction: column;
}
.plan--popular {
  border-color: var(--color-primary);
  position: relative;
  transform: scale(1.02);
}
.plan--popular::before {
  content: 'Most Popular';
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary);
  color: #fff;
  padding: 0.25rem 0.875rem;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.plan__name { font-size: 1.1rem; font-weight: 700; margin-bottom: 0.5rem; }
.plan__price { font-size: 2.5rem; font-weight: 800; letter-spacing: -0.03em; }
.plan__price small { font-size: 1rem; font-weight: 500; color: var(--color-text-muted); }
.plan__desc { color: var(--color-text-muted); font-size: 0.9rem; margin: 0.5rem 0 1.5rem; }
.plan__features { list-style: none; padding: 0; margin: 0 0 1.5rem; }
.plan__features li {
  padding: 0.5rem 0;
  font-size: 0.95rem;
  border-bottom: 1px solid var(--color-border);
}
.plan__features li::before {
  content: '✓';
  color: var(--color-success);
  font-weight: 700;
  margin-right: 0.5rem;
}
.plan__features li:last-child { border-bottom: 0; }
.plan .btn { margin-top: auto; }

/* === Forms === */
.form { display: grid; gap: 1rem; }
.field { display: grid; gap: 0.375rem; }
.field label { font-size: 0.875rem; font-weight: 600; color: var(--color-text); }
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 0.625rem 0.875rem;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 0.95rem;
  background: #fff;
  color: var(--color-text);
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
}
.field__help { font-size: 0.8rem; color: var(--color-text-soft); }
.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
@media (max-width: 600px) { .field-row { grid-template-columns: 1fr; } }

/* === Footer === */
.site-footer {
  background: var(--color-text);
  color: var(--color-bg-soft);
  padding: 3rem 0 2rem;
  margin-top: 4rem;
}
.site-footer a { color: var(--color-bg-soft); }
.site-footer a:hover { color: #fff; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 2rem;
  margin-bottom: 2rem;
}
@media (max-width: 768px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .footer-grid { grid-template-columns: 1fr; } }
.footer-grid h4 { color: #fff; font-size: 0.9rem; margin-bottom: 0.875rem; text-transform: uppercase; letter-spacing: 0.05em; }
.footer-grid ul { list-style: none; padding: 0; margin: 0; }
.footer-grid li { margin-bottom: 0.5rem; font-size: 0.9rem; }
.footer-bottom {
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.85rem;
}

/* === Utility === */
.text-center { text-align: center; }
.text-muted { color: var(--color-text-muted); }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.lang-switcher {
  display: inline-flex;
  background: var(--color-bg-muted);
  border-radius: 100px;
  padding: 0.125rem;
  gap: 0.125rem;
}
.lang-switcher button {
  background: none;
  border: 0;
  padding: 0.375rem 0.75rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-muted);
  border-radius: 100px;
  cursor: pointer;
}
.lang-switcher button.active {
  background: #fff;
  color: var(--color-text);
  box-shadow: var(--shadow-sm);
}

/* === App / Dashboard layout === */
.app-shell {
  display: grid;
  grid-template-columns: 240px 1fr;
  min-height: 100vh;
}
@media (max-width: 900px) { .app-shell { grid-template-columns: 1fr; } }
.app-sidebar {
  background: var(--color-text);
  color: #fff;
  padding: 1.25rem 1rem;
}
@media (max-width: 900px) { .app-sidebar { display: none; } }
.app-sidebar a {
  display: block;
  padding: 0.625rem 0.75rem;
  border-radius: var(--radius);
  color: rgba(255, 255, 255, 0.7);
  font-weight: 500;
  font-size: 0.95rem;
  margin-bottom: 0.25rem;
}
.app-sidebar a:hover, .app-sidebar a.active {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
}
.app-main { padding: 1.5rem 1.5rem 4rem; background: var(--color-bg-soft); }
.app-topbar {
  background: #fff;
  border-bottom: 1px solid var(--color-border);
  padding: 0.875rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: -1.5rem -1.5rem 1.5rem;
}

/* Estimate editor */
.estimate-grid {
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  overflow: hidden;
}
.estimate-row {
  display: grid;
  grid-template-columns: 60px 1fr 100px 80px 120px 120px 80px 40px;
  align-items: center;
  padding: 0.625rem 1rem;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.9rem;
}
.estimate-row--head {
  background: var(--color-bg-muted);
  font-weight: 600;
  color: var(--color-text-muted);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}
.estimate-row input {
  border: 0;
  padding: 0.375rem 0.5rem;
  background: transparent;
  width: 100%;
  font-family: inherit;
  font-size: inherit;
}
.estimate-row input:focus {
  background: #fff;
  outline: 1px solid var(--color-primary);
  border-radius: 4px;
}

/* Mobile: estimate rows become stacked cards */
@media (max-width: 768px) {
  .estimate-row, .estimate-row--head { grid-template-columns: 1fr; gap: 0.5rem; }
  .estimate-row--head { display: none; }
  .estimate-row { padding: 1rem; }
  .estimate-row > * { display: flex; justify-content: space-between; }
  .estimate-row input { text-align: right; max-width: 60%; }
  .estimate-row > *::before {
    content: attr(data-label);
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    font-weight: 600;
  }
}

/* Toast */
.toast {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  background: var(--color-text);
  color: #fff;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow-xl);
  z-index: 100;
  font-size: 0.95rem;
  max-width: 90vw;
  opacity: 0;
  transform: translateY(8px);
  transition: 0.2s;
  pointer-events: none;
}
.toast--show { opacity: 1; transform: translateY(0); }
.toast--error { background: var(--color-danger); }
.toast--success { background: var(--color-success); }

/* Loading skeleton */
.skel {
  background: linear-gradient(90deg, var(--color-bg-muted) 0%, var(--color-border) 50%, var(--color-bg-muted) 100%);
  background-size: 200% 100%;
  animation: skel 1.4s linear infinite;
  border-radius: var(--radius-sm);
  height: 1rem;
}
@keyframes skel { from { background-position: 200% 0; } to { background-position: -200% 0; } }