/* Self-hosted IBM Plex fonts (mirrors Google Fonts subsets 1:1) — avoids depending on fonts.googleapis.com/fonts.gstatic.com at page-load time. */
@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('fonts/ibm-plex-sans-400-cyrillic.woff2') format('woff2');
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('fonts/ibm-plex-sans-400-cyrillic-ext.woff2') format('woff2');
  unicode-range: U+0460-052F, U+1C80-1C8A, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F;
}
@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('fonts/ibm-plex-sans-400-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('fonts/ibm-plex-sans-400-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('fonts/ibm-plex-sans-500-cyrillic.woff2') format('woff2');
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('fonts/ibm-plex-sans-500-cyrillic-ext.woff2') format('woff2');
  unicode-range: U+0460-052F, U+1C80-1C8A, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F;
}
@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('fonts/ibm-plex-sans-500-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('fonts/ibm-plex-sans-500-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'IBM Plex Sans Condensed';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('fonts/ibm-plex-sans-condensed-600-cyrillic-ext.woff2') format('woff2');
  unicode-range: U+0460-052F, U+1C80-1C8A, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F;
}
@font-face {
  font-family: 'IBM Plex Sans Condensed';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('fonts/ibm-plex-sans-condensed-600-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'IBM Plex Sans Condensed';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('fonts/ibm-plex-sans-condensed-600-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'IBM Plex Sans Condensed';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('fonts/ibm-plex-sans-condensed-700-cyrillic-ext.woff2') format('woff2');
  unicode-range: U+0460-052F, U+1C80-1C8A, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F;
}
@font-face {
  font-family: 'IBM Plex Sans Condensed';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('fonts/ibm-plex-sans-condensed-700-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'IBM Plex Sans Condensed';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('fonts/ibm-plex-sans-condensed-700-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('fonts/ibm-plex-mono-400-cyrillic.woff2') format('woff2');
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('fonts/ibm-plex-mono-400-cyrillic-ext.woff2') format('woff2');
  unicode-range: U+0460-052F, U+1C80-1C8A, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F;
}
@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('fonts/ibm-plex-mono-400-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('fonts/ibm-plex-mono-400-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
/* STRUCTURA DIGITAL — landing page
   Tokens copied 1:1 from the Claude Design export
   (project/_ds/structura-design-system-.../tokens/*.css) */

:root {
  --color-bg: #111316;
  --color-surface: #1c2024;
  --color-border: #2a2d31;
  --color-border-dashed: #232629;
  --color-text-primary: #e4e2dc;
  --color-text-heading: #f2f0ea;
  --color-text-muted: #9ba0a6;
  --color-text-faint: #7d848c;
  --color-structure-line: #5b6672;
  --color-accent: #e0995c;
  --color-accent-hover: #f0ad72;
  --color-accent-active: #c97d42;
  --color-accent-ink: #111316;
  --color-secondary: #5b8dbf;
  --color-secondary-hover: #7ba6d1;
  --color-success: #7fa876;
  --color-error: #c4544a;
  --color-disabled-bg: #3a3f45;
  --color-disabled-text: #6b7178;
  --grid-line: rgba(255, 255, 255, .035);
  --grid-size: 38px;

  --font-display: 'IBM Plex Sans Condensed', sans-serif;
  --font-body: 'IBM Plex Sans', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  --radius-sm: 2px;
  --radius-md: 4px;

  --shadow-overlay: 0 20px 48px rgba(0, 0, 0, .5);
  --ease-standard: cubic-bezier(.2, .8, .2, 1);
  --duration-fast: 120ms;
  --duration-base: 200ms;

  --container-max: 1040px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text-primary);
  font-family: var(--font-body);
  min-height: 100vh;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: var(--grid-size) var(--grid-size);
  overflow-x: hidden;
}

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

img, svg { display: block; max-width: 100%; }

/* ---------- layout shell ---------- */

.wrap {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 clamp(16px, 4vw, 24px);
}

/* ---------- header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--color-bg);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  padding-top: 20px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--color-border);
}

.logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  letter-spacing: -0.004em;
  color: var(--color-text-heading);
  padding: 6px 0;
}

.nav {
  display: flex;
  gap: 28px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  flex-wrap: wrap;
}

.nav a {
  color: var(--color-text-muted);
  transition: color var(--duration-fast) var(--ease-standard);
}
.nav a:hover, .nav a:focus-visible { color: var(--color-text-primary); }

/* sections that are scroll targets: keep them clear of the sticky header */
#services, #method, #contact {
  scroll-margin-top: 88px;
}

/* ---------- buttons (Button.jsx) ---------- */

.btn {
  appearance: none;
  font-family: var(--font-body);
  font-weight: 500;
  letter-spacing: 0.01em;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: background var(--duration-fast) var(--ease-standard),
              border-color var(--duration-fast) var(--ease-standard);
}

.btn-sm { padding: 6px 14px; font-size: 13px; }
.btn-md { padding: 10px 20px; font-size: 14px; }
.btn-lg { padding: 13px 26px; font-size: 15px; }

.btn-primary {
  background: var(--color-accent);
  color: var(--color-accent-ink);
  border: 1px solid transparent;
}
.btn-primary:hover:not(:disabled),
.btn-primary:focus-visible:not(:disabled) { background: var(--color-accent-hover); }
.btn-primary:active:not(:disabled) { background: var(--color-accent-active); }
.btn-primary:disabled {
  background: var(--color-disabled-bg);
  color: var(--color-disabled-text);
  cursor: not-allowed;
}

/* ---------- hero ---------- */

.hero {
  padding: clamp(56px, 10vw, 96px) 0 72px;
  max-width: 680px;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 16px;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(32px, 6vw, 52px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  font-weight: 700;
  color: var(--color-text-heading);
  margin: 0 0 24px;
}

.hero p {
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.6;
  color: var(--color-text-primary);
  margin: 0 0 36px;
  max-width: 560px;
}

/* ---------- section heading / divider (SectionDivider.jsx) ---------- */

section { padding: 0 0 64px; }
#contact { padding-bottom: 80px; max-width: 480px; }

h2.section-title {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 600;
  color: var(--color-text-heading);
  margin: 0 0 28px;
}

.divider {
  position: relative;
  height: 1px;
  background: var(--color-border);
  margin: 34px 0;
}
.divider:first-child { margin-top: 0; }
.divider::before, .divider::after {
  content: '';
  position: absolute;
  top: -3px;
  width: 1px;
  height: 7px;
  background: var(--color-structure-line);
}
.divider::before { left: 0; }
.divider::after { right: 0; }
.divider span {
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--color-structure-line);
  background: var(--color-bg);
  padding: 0 8px;
  letter-spacing: 0.05em;
  white-space: nowrap;
}

/* ---------- cards (Card.jsx, variant="blueprint") ---------- */

.card-grid {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.card {
  position: relative;
  width: min(260px, 100%);
  padding: 28px 22px;
  border: 1px solid var(--color-border);
  background: rgba(255, 255, 255, .012);
  border-radius: var(--radius-sm);
}

.card::before, .card::after {
  content: '';
  position: absolute;
  width: 11px;
  height: 11px;
  border-color: transparent;
  border-style: solid;
  transition: border-color var(--duration-base) var(--ease-standard);
}
.card::before { top: -1px; left: -1px; border-width: 1px 0 0 1px; }
.card::after { bottom: -1px; right: -1px; border-width: 0 1px 1px 0; }
.card:hover::before, .card:hover::after,
.card:focus-within::before, .card:focus-within::after {
  border-color: var(--color-accent);
}

.card-tag {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 8px;
}

.card-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 17px;
  color: var(--color-text-heading);
  margin-bottom: 8px;
}

.card-link {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

.card-link:hover,
.card-link:focus-visible {
  color: var(--color-accent);
  outline: none;
}

.card-body {
  font-family: var(--font-body);
  font-size: 12.5px;
  color: var(--color-text-faint);
  line-height: 1.6;
  margin: 0;
}

/* ---------- method list ---------- */

.method-list {
  display: flex;
  flex-direction: column;
}

.method-row {
  display: flex;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px dashed var(--color-border-dashed);
}

.method-index {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-structure-line);
  flex-shrink: 0;
  width: 24px;
}

.method-row p {
  margin: 0;
  font-size: 15px;
  line-height: 1.65;
  color: var(--color-text-primary);
}

.method-row b {
  color: var(--color-text-heading);
  font-family: var(--font-display);
}

/* ---------- about ---------- */

.about-statement {
  max-width: 600px;
  font-family: var(--font-display);
  font-size: 19px;
  line-height: 1.5;
  font-weight: 600;
  color: var(--color-text-heading);
  margin: 0;
}

/* ---------- contact form (Input.jsx / Checkbox.jsx / Toast.jsx) ---------- */

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin: 16px 0 20px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-family: var(--font-body);
}

.field label {
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  font-family: var(--font-mono);
}

.field input,
.field textarea {
  background: var(--color-surface);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  font-size: 14px;
  font-family: var(--font-body);
  outline: none;
  transition: border-color var(--duration-fast) var(--ease-standard);
}

.field textarea { resize: vertical; }

.field input:focus,
.field textarea:focus {
  border-color: var(--color-accent);
}

.form-error {
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--color-error);
  margin: 10px 0 0;
}

.toast {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  width: 100%;
  max-width: 320px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 2px solid var(--color-success);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  box-shadow: var(--shadow-overlay);
  margin-top: 20px;
}

.toast-body { flex: 1; }

.toast-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 15px;
  color: var(--color-text-heading);
  margin-bottom: 4px;
}

.toast-message {
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.5;
  margin: 0;
}

.toast-close {
  background: none;
  border: none;
  color: var(--color-text-faint);
  cursor: pointer;
  font-size: 16px;
  line-height: 1;
  padding: 0;
}
.toast-close:hover, .toast-close:focus-visible { color: var(--color-text-primary); }

[hidden] { display: none !important; }

/* ---------- footer ---------- */

.site-footer {
  border-top: 1px solid var(--color-border);
}

.site-footer .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding: 28px clamp(16px, 4vw, 24px);
}

.footer-logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  color: var(--color-text-heading);
}

.footer-copy {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-text-faint);
}

/* ---------- focus visibility ---------- */

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* ---------- motion ---------- */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    transition: none !important;
    animation: none !important;
  }
}