@import url('https://fonts.googleapis.com/css2?family=Special+Elite&family=Oswald:wght@400;500;600&family=IBM+Plex+Sans:wght@400;500;600;700&display=swap');

:root {
  --paper-bg: #ece5ce;
  --paper-line: rgba(84, 92, 82, 0.08);
  --paper-shadow: rgba(48, 38, 24, 0.28);
  --ink: #1d1a14;
  --ink-soft: #3a3428;
  --tab-bg: #d8cebb;
  --tab-border: #8c7d65;
  --tab-active: #efdfbf;
  --accent-red: #b83c2b;
  --accent-orange: #ca7a2f;
  --card-bg: rgba(255, 251, 240, 0.88);
  --radius-soft: 12px;
  --radius-paper: 6px;
  --heading-font: 'Oswald', 'Arial Narrow', sans-serif;
  --body-font: 'IBM Plex Sans', 'Segoe UI', sans-serif;
  --typewriter-font: 'Special Elite', 'Courier New', monospace;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--body-font);
  line-height: 1.55;
  background-color: var(--paper-bg);
  background-image:
    radial-gradient(circle at 10% 0%, rgba(210, 196, 158, 0.62), transparent 35%),
    radial-gradient(circle at 95% 100%, rgba(205, 178, 128, 0.44), transparent 30%),
    linear-gradient(to right, transparent 0, transparent 43px, var(--paper-line) 44px, transparent 45px),
    linear-gradient(to bottom, transparent 0, transparent 31px, var(--paper-line) 32px, transparent 33px);
  background-size: auto, auto, 44px 44px, 32px 32px;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.16), transparent 35%),
    radial-gradient(circle at 80% 70%, rgba(63, 45, 18, 0.07), transparent 34%),
    linear-gradient(rgba(255, 255, 255, 0.08), rgba(95, 72, 33, 0.05));
  mix-blend-mode: multiply;
  z-index: -1;
}

a {
  color: var(--ink);
  text-underline-offset: 2px;
}

a:hover {
  color: var(--accent-red);
}

a:focus-visible,
button:focus-visible,
.button:focus-visible {
  outline: 2px solid var(--accent-red);
  outline-offset: 3px;
}

.nav {
  position: sticky;
  top: 0;
  z-index: 120;
  background: linear-gradient(to bottom, rgba(234, 216, 170, 0.98), rgba(214, 195, 148, 0.95));
  border-bottom: 1px solid rgba(71, 58, 37, 0.42);
  box-shadow: 0 8px 20px rgba(46, 34, 17, 0.2);
}

.nav-inner {
  max-width: 1140px;
  margin: 0 auto;
  padding: 12px 18px 10px;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 12px;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  min-height: 32px;
  text-decoration: none;
  color: rgba(24, 18, 12, 0.78);
  font-family: var(--typewriter-font);
  font-size: 0.95rem;
  letter-spacing: 0.01em;
  line-height: 1;
}

.brand-link:hover,
.brand-link:focus-visible {
  color: rgba(24, 18, 12, 0.92);
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.nav-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--tab-border);
  border-bottom-color: rgba(58, 46, 27, 0.6);
  color: var(--ink-soft);
  background: linear-gradient(to bottom, #e4d9c4, #d0c2a7);
  text-decoration: none;
  font-family: var(--typewriter-font);
  font-size: 0.95rem;
  padding: 5px 12px 4px;
  min-height: 32px;
  border-radius: var(--radius-paper) var(--radius-paper) 2px 2px;
  box-shadow: 0 2px 0 rgba(61, 48, 31, 0.4);
  transition: transform 0.12s ease, box-shadow 0.12s ease, background 0.2s ease;
}

.nav-links a:hover {
  transform: translateY(-1px);
  box-shadow: 0 3px 0 rgba(61, 48, 31, 0.45);
  background: linear-gradient(to bottom, #efe4cf, #d8cab0);
}

.nav-links a:active {
  transform: translateY(1px);
  box-shadow: 0 1px 0 rgba(61, 48, 31, 0.5);
}

.nav-links a.is-active {
  color: #15110c;
  background: linear-gradient(to bottom, #f3e6ca, #dfcfb0);
  border-color: #6f5f45;
  border-bottom-color: #4e3f2b;
  box-shadow: inset 0 1px 0 rgba(255, 252, 242, 0.65), 0 1px 0 rgba(61, 48, 31, 0.5);
  transform: translateY(1px);
}

.nav-links a.is-active:hover,
.nav-links a.is-active:active {
  color: #15110c;
  background: linear-gradient(to bottom, #f3e6ca, #dfcfb0);
  box-shadow: inset 0 1px 0 rgba(255, 252, 242, 0.65), 0 1px 0 rgba(61, 48, 31, 0.5);
  transform: translateY(1px);
}

main {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 18px 18px;
}

.section {
  margin: 18px 0;
  padding: 24px 22px;
  background: var(--card-bg);
  border: 1px solid rgba(71, 57, 35, 0.3);
  border-radius: 8px;
  box-shadow: 0 7px 16px rgba(68, 52, 32, 0.12);
  position: relative;
}

#simulator-section {
  scroll-margin-top: 82px;
}

.section.striped {
  background:
    linear-gradient(transparent 0 31px, rgba(112, 100, 83, 0.06) 31px 32px),
    var(--card-bg);
  background-size: 100% 32px;
}

.section h1,
.section h2,
.section h3 {
  font-family: var(--heading-font);
  font-weight: 500;
  letter-spacing: 0.012em;
  color: #18130f;
  margin: 0 0 12px;
}

.section h1 {
  font-size: clamp(1.7rem, 3.2vw, 2.35rem);
  line-height: 1.12;
}

.section h2 {
  font-size: clamp(1.65rem, 3vw, 2.25rem);
}

.section h3 {
  font-size: clamp(1.3rem, 2.2vw, 1.65rem);
}

.section p,
.section li,
.section td,
.section th {
  font-size: 1.02rem;
}

.hero {
  background:
    linear-gradient(104deg, rgba(247, 236, 201, 0.95), rgba(227, 211, 170, 0.86));
}

.hero-text {
  display: grid;
  gap: 12px;
}

.hero-subtitle {
  margin: 0;
  font-size: clamp(1.1rem, 2vw, 1.5rem);
  font-weight: 500;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.badge {
  display: inline-block;
  width: fit-content;
  background: rgba(46, 35, 19, 0.12);
  border: 1px solid rgba(59, 48, 33, 0.42);
  color: #2d2318;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 600;
}

button,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--typewriter-font);
  font-size: 0.94rem;
  border-radius: 6px;
  border: 1px solid #5a4730;
  color: #221b13;
  background: linear-gradient(to bottom, #efd8aa, #cbaf7b);
  padding: 8px 15px;
  box-shadow: 0 2px 0 rgba(63, 48, 28, 0.45);
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.12s ease, box-shadow 0.12s ease, filter 0.15s ease;
}

button.secondary,
.button.secondary {
  background: linear-gradient(to bottom, #e5c183, #be8744);
}

button.ghost,
.button.ghost {
  background: linear-gradient(to bottom, #f6f2e5, #d9cdb6);
}

button:hover,
.button:hover {
  filter: brightness(1.03);
  transform: translateY(-1px);
  box-shadow: 0 3px 0 rgba(63, 48, 28, 0.46);
}

button:active,
.button:active {
  transform: translateY(1px);
  box-shadow: 0 1px 0 rgba(63, 48, 28, 0.5);
}

button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.cgs-grid {
  display: grid;
  gap: 16px;
}

.cgs-grid.columns-2 {
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
}

.cgs-grid.columns-3 {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.cgs-card {
  background: rgba(255, 252, 243, 0.9);
  border: 1px solid rgba(65, 50, 30, 0.35);
  border-radius: 8px;
  padding: 16px;
  box-shadow: 0 4px 10px rgba(64, 50, 31, 0.11);
}

.cgs-card img {
  max-width: 100%;
  display: block;
}

.gallery-grid {
  align-items: stretch;
}

.gallery-card {
  height: 100%;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.gallery-media {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 8px;
}

.gallery-card figcaption {
  margin-top: auto;
}

.cgs-table {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid rgba(66, 51, 31, 0.42);
  background: rgba(255, 253, 247, 0.95);
}

.cgs-table thead {
  background: rgba(65, 51, 31, 0.9);
  color: #f2e8d0;
}

.cgs-table th,
.cgs-table td {
  padding: 11px 12px;
  border: 1px solid rgba(83, 65, 41, 0.3);
  text-align: left;
  vertical-align: top;
}

.cgs-table tbody tr:nth-child(even) {
  background: rgba(97, 78, 49, 0.05);
}

.timeline {
  display: grid;
  gap: 14px;
  margin-top: 8px;
}

.timeline-item {
  padding: 12px 14px;
  border-left: 5px solid rgba(97, 67, 31, 0.5);
  background: rgba(255, 249, 236, 0.88);
  box-shadow: 0 3px 6px rgba(57, 43, 24, 0.08);
}

.code-block {
  overflow-x: auto;
  background: #1f1b16;
  color: #f5deab;
  border: 1px solid #5e4930;
  border-radius: 7px;
  padding: 10px 12px;
  font-family: 'Courier New', monospace;
}

.code-block pre {
  margin: 0;
  white-space: pre;
}

.code-block code {
  display: block;
  min-width: max-content;
  line-height: 1.5;
  font-family: "Fira Code", "Courier New", monospace;
}

.tok-keyword { color: #ff8da1; font-weight: 600; }
.tok-string { color: #c3e88d; }
.tok-register { color: #82aaff; font-weight: 600; }
.tok-number { color: #f8c275; }
.tok-comment { color: #76839b; font-style: italic; }
.tok-title {
  color: #b71c1c;
  background: #ffe88a;
  padding: 0 6px;
  border-radius: 3px;
  font-weight: 700;
}
.tok-operator { color: #7fc8ff; font-weight: 500; }
.tok-input { color: #8be9fd; font-weight: 600; }
.tok-print { color: #c3e88d; }

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  background: #3b2f20;
  color: #f0e2c6;
  border-radius: 999px;
  padding: 4px 9px;
  font-size: 0.82rem;
}

.contact-layout {
  display: grid;
  gap: 16px;
  grid-template-columns: minmax(0, 1.4fr) minmax(260px, 0.9fr);
}

.contact-form {
  display: grid;
  gap: 14px;
}

.contact-panel {
  display: grid;
  gap: 14px;
}

.contact-panel p {
  margin: 0;
}

.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.form-row {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.field {
  display: grid;
  gap: 6px;
}

.field label {
  font-weight: 600;
  color: #2c2217;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  border: 1px solid rgba(81, 63, 38, 0.45);
  border-radius: 8px;
  padding: 10px 12px;
  font: inherit;
  color: var(--ink);
  background: rgba(255, 253, 247, 0.98);
  box-shadow: inset 0 1px 2px rgba(37, 28, 17, 0.08);
}

.field input::placeholder,
.field textarea::placeholder {
  color: rgba(62, 48, 31, 0.65);
}

.field textarea {
  min-height: 180px;
  resize: vertical;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: rgba(120, 51, 31, 0.72);
  box-shadow: 0 0 0 3px rgba(184, 60, 43, 0.16);
  outline: none;
}

.field input:invalid,
.field select:invalid,
.field textarea:invalid {
  border-color: rgba(139, 41, 31, 0.52);
}

.field-hint,
.status-message {
  margin: 0;
  font-size: 0.92rem;
  color: rgba(49, 38, 24, 0.88);
}

.status-message {
  min-height: 1.4em;
}

.status-message[data-state="error"] {
  color: #8a281f;
}

.status-message[data-state="success"] {
  color: #2d5f36;
}

.contact-tips {
  display: grid;
  gap: 12px;
}

.contact-tips ul {
  margin: 0;
}

.note-list {
  display: grid;
  gap: 10px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.note-list li {
  padding-left: 1.2rem;
  position: relative;
}

.note-list li::before {
  content: "•";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--accent-red);
}

.footer {
  margin: 18px auto 0;
  max-width: 1140px;
  border-top: 1px solid rgba(80, 62, 37, 0.35);
  text-align: center;
  color: rgba(42, 33, 23, 0.85);
  padding: 17px 10px 26px;
  font-family: var(--typewriter-font);
  font-size: 0.94rem;
}

@media (max-width: 920px) {
  #simulator-section {
    scroll-margin-top: 112px;
  }

  .nav-inner {
    grid-template-columns: 1fr;
    align-items: start;
    gap: 10px;
  }

  .nav-links {
    order: 2;
  }

  .section {
    padding: 20px 14px;
  }

  .hero-actions {
    gap: 10px;
  }

  .contact-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  main {
    padding: 0 10px 14px;
  }

  .nav-inner {
    padding: 10px;
  }

  .nav-links a {
    font-size: 0.85rem;
    padding: 4px 8px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  button,
  .button {
    width: 100%;
  }

  .contact-actions {
    display: grid;
  }

  .timeline-item {
    padding: 10px;
  }

  .footer {
    padding-bottom: 16px;
  }
}

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