/* --------------------------------------------------------------------------
   Design tokens — palette inspired by company logo
   -------------------------------------------------------------------------- */

:root {
  color-scheme: light dark;

  --bg: #eef5fc;
  --surface: #ffffff;
  --surface-alt: #dfeaf7;

  --text: #0f2236;
  --text-soft: #47627d;

  --border: #b8cce2;

  --accent: #0060c0;
  --accent-hover: #0051a3;
  --accent-soft: #2a79ca;
  --accent-contrast: #ffffff;

  --shadow: 0 10px 30px rgba(7, 25, 45, 0.12);

  --radius-sm: 0.375rem;
  --radius-md: 0.75rem;
  --radius-lg: 1.25rem;

  --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;

  --container: 72rem;

  --font-body: "Segoe UI", Roboto, Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1726;
    --surface: #102235;
    --surface-alt: #16304a;

    --text: #edf4fb;
    --text-soft: #b4c8db;

    --border: #284763;

    --accent: #4a99ea;
    --accent-hover: #79b4ef;
    --accent-soft: #68a8eb;
    --accent-contrast: #08131d;

    --shadow: 0 12px 28px rgba(0, 0, 0, 0.32);
  }
}

/* --------------------------------------------------------------------------
   Reset & base elements
   -------------------------------------------------------------------------- */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--text);
  background: linear-gradient(180deg, var(--bg) 0%, var(--surface-alt) 100%);
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: var(--accent);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.16em;
}

a:hover,
a:focus-visible {
  color: var(--accent-hover);
}

button,
input,
textarea,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}

/* --------------------------------------------------------------------------
   Accessibility helpers
   -------------------------------------------------------------------------- */

.skip-link {
  position: absolute;
  left: var(--space-4);
  top: -100%;
  z-index: 1000;
  padding: var(--space-3) var(--space-4);
  color: var(--accent-contrast);
  background: var(--accent);
  border-radius: var(--radius-sm);
  text-decoration: none;
  box-shadow: var(--shadow);
}

.skip-link:focus {
  top: var(--space-4);
}

/* --------------------------------------------------------------------------
   Layout containers
   -------------------------------------------------------------------------- */

.container {
  width: min(calc(100% - 2rem), var(--container));
  margin-inline: auto;
}

.site-header {
  padding: var(--space-6) 0 var(--space-4);
}

#main-content {
  display: block;
  padding-bottom: var(--space-8);
}

/* --------------------------------------------------------------------------
   Sections
   -------------------------------------------------------------------------- */

.section {
  padding: var(--space-4) 0;
}

.section .container {
  padding: var(--space-6);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.section h2 {
  margin: 0 0 var(--space-4);
  font-size: clamp(1.35rem, 1.4vw + 1rem, 2rem);
  line-height: 1.2;
  color: var(--text);
}

.section p {
  margin: 0 0 var(--space-4);
  max-width: 70ch;
}

.section p:last-child {
  margin-bottom: 0;
}

.lead {
  font-size: 1.1rem;
  color: var(--text-soft);
}

/* --------------------------------------------------------------------------
   Section: services
   -------------------------------------------------------------------------- */

.section-services ul {
  margin: 0;
  padding-left: 1.2rem;
}

.section-services li {
  margin-bottom: var(--space-3);
}

.section-services li:last-child {
  margin-bottom: 0;
}

/* --------------------------------------------------------------------------
   Brand block
   -------------------------------------------------------------------------- */

.brand {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  grid-template-rows: auto;
  align-items: center;
  gap: var(--space-5);
  padding: var(--space-6);
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.brand-text {
  grid-column: 1 / 2;
  grid-row: 1 / 2;
  min-width: 0;
}

.brand-link {
  grid-column: 2 / 3;
  grid-row: 1 / 2;
  justify-self: end;
  align-self: center;
  display: block;
  width: 200px;
  max-width: 100%;
}

.brand-link img {
  display: block;
  width: 200px;
  max-width: 100%;
  height: auto;
}

/* --------------------------------------------------------------------------
   Data list
   -------------------------------------------------------------------------- */

.data-list {
  margin: 0;
  display: grid;
  gap: var(--space-4);
}

.data-list > div {
  padding: var(--space-4);
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}

.data-list dt {
  margin: 0 0 var(--space-2);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text);
}

.data-list dd {
  margin: 0 0 0 30px;
  font-weight: 500;
  color: var(--text-soft);
  word-break: break-word;
}

.data-list dd a {
  word-break: break-all;
}

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */

.reveal-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.7rem 1rem;
  color: var(--accent-contrast);
  background: linear-gradient(180deg, var(--accent-soft) 0%, var(--accent) 100%);
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow);
  text-decoration: none;
  transition:
    background-color 0.2s ease,
    transform 0.2s ease,
    box-shadow 0.2s ease;
}

.reveal-button:hover,
.reveal-button:focus-visible {
  background: linear-gradient(180deg, var(--accent) 0%, var(--accent-hover) 100%);
  box-shadow: 0 12px 24px rgba(0, 96, 192, 0.22);
  transform: translateY(-1px);
}

.reveal-button:active {
  transform: translateY(0);
}

/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */

@media (max-width: 759px) {
  .brand {
    grid-template-columns: 1fr;
  }

  .brand-text {
    grid-column: 1;
    grid-row: 2;
  }

  .brand-link {
    grid-column: 1;
    grid-row: 1;
    justify-self: start;
  }
}