/* ============================================================
   0WWW BBS — style.css
   Терминальная эстетика MS-DOS / BBS конца 80х — 90х.
   Палитра — классические 16 цветов CGA/EGA text mode.
   ============================================================ */

@import url('https://fonts.cdnfonts.com/css/flexi-ibm-vga-true');

:root {
  --bg:        #000000;
  --bg-panel:  #0000AA; /* классический "синий экран" Norton/QBasic */
  --fg:        #AAAAAA; /* стандартный серый текст DOS (цвет 7) */
  --fg-bright: #FFFFFF;
  --cyan:      #55FFFF;
  --yellow:    #FFFF55;
  --green:     #55FF55;
  --red:       #FF5555;
  --magenta:   #FF55FF;
  --blue:      #5555FF;

  --font-main: 'Flexi IBM VGA True', 'Fixedsys Excelsior', Consolas, 'Courier New', monospace;
  --col-max: 78ch;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-main);
  font-size: 16px;
  line-height: 1.5;
  min-height: 100%;
}

body {
  position: relative;
  padding: 1.25rem 1rem 3rem;
}

/* ---------- CRT / scanline overlay ---------- */
.crt-overlay {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 50;
  background:
    repeating-linear-gradient(
      to bottom,
      rgba(255,255,255,0.035) 0px,
      rgba(255,255,255,0.035) 1px,
      rgba(0,0,0,0) 2px,
      rgba(0,0,0,0) 3px
    );
  mix-blend-mode: overlay;
}
.crt-overlay::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(0,0,0,0) 55%, rgba(0,0,0,0.55) 100%);
}
@media (prefers-reduced-motion: no-preference) {
  .crt-overlay { animation: flicker 7s infinite; }
}
@keyframes flicker {
  0%, 96%, 100% { opacity: 1; }
  97% { opacity: 0.94; }
  98% { opacity: 1; }
  99% { opacity: 0.97; }
}

/* ---------- layout ---------- */
.screen {
  max-width: var(--col-max);
  margin: 0 auto;
}

.topbar {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.25rem 1rem;
  background: var(--bg-panel);
  color: var(--fg-bright);
  padding: 0.35rem 0.75rem;
  font-size: 0.85rem;
  border-bottom: 2px solid var(--cyan);
}
.topbar span.tag { color: var(--yellow); }
.topbar span.live-clock { color: var(--green); }

/* ---------- ASCII banner ---------- */
.banner {
  overflow-x: auto;
  margin: 1.25rem 0;
  color: var(--cyan);
  text-shadow: 0 0 6px rgba(85,255,255,0.35);
}
.banner pre {
  margin: 0;
  font-size: clamp(0.4rem, 1.7vw, 0.95rem);
  line-height: 1.15;
  white-space: pre;
}

/* ---------- boxes (double-line DOS dialog look) ---------- */
.dos-box {
  position: relative;
  border: 2px double var(--fg);
  padding: 1.5rem 1.25rem 1.25rem;
  margin: 2rem 0;
  background: rgba(255,255,255,0.01);
}
.dos-box[data-title]::before {
  content: attr(data-title);
  position: absolute;
  top: -0.75em;
  left: 1.25em;
  background: var(--bg);
  padding: 0 0.6em;
  color: var(--yellow);
  letter-spacing: 0.05em;
}
.dos-box.cyan { border-color: var(--cyan); }
.dos-box.cyan[data-title]::before { color: var(--cyan); }
.dos-box.green { border-color: var(--green); }
.dos-box.green[data-title]::before { color: var(--green); }
.dos-box.magenta { border-color: var(--magenta); }
.dos-box.magenta[data-title]::before { color: var(--magenta); }

/* ---------- nav menu ---------- */
nav.main-menu {
  margin: 1.5rem 0;
}
nav.main-menu ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 0.5rem 1.5rem;
}
nav.main-menu a {
  display: block;
  color: var(--fg);
  text-decoration: none;
  padding: 0.35rem 0.5rem;
  border-left: 2px solid transparent;
}
nav.main-menu a:hover,
nav.main-menu a:focus-visible {
  background: var(--bg-panel);
  color: var(--fg-bright);
  border-left-color: var(--yellow);
}
nav.main-menu a .hotkey {
  color: var(--yellow);
  font-weight: bold;
}
nav.main-menu a[aria-current="page"] {
  color: var(--green);
}
nav.main-menu a[aria-current="page"] .hotkey { color: var(--green); }

/* small top nav strip present on all inner pages */
.crumb-nav {
  font-size: 0.85rem;
  margin: 0.75rem 0 0;
  color: var(--fg);
}
.crumb-nav a { color: var(--cyan); text-decoration: none; }
.crumb-nav a:hover, .crumb-nav a:focus-visible { text-decoration: underline; }

/* ---------- typography helpers ---------- */
h1, h2, h3 {
  font-weight: normal;
  color: var(--fg-bright);
  margin-top: 0;
}
h1 { color: var(--yellow); font-size: 1.4rem; }
h2 { color: var(--cyan); font-size: 1.15rem; border-bottom: 1px dashed var(--fg); padding-bottom: 0.25rem; }
h3 { color: var(--green); font-size: 1rem; }

a { color: var(--cyan); }
a:hover, a:focus-visible { color: var(--fg-bright); }

.hl { color: var(--yellow); }
.ok { color: var(--green); }
.warn { color: var(--red); }
.cyan-text { color: var(--cyan); }
.magenta-text { color: var(--magenta); }
.dim { color: #6c6c6c; }

blockquote {
  border-left: 2px solid var(--fg);
  margin: 1rem 0;
  padding: 0.25rem 0 0.25rem 1rem;
  color: var(--fg);
  font-style: normal;
}

table.dos-table {
  border-collapse: collapse;
  width: 100%;
  margin: 1rem 0;
  font-size: 0.9rem;
}
table.dos-table th, table.dos-table td {
  border: 1px solid var(--fg);
  padding: 0.35rem 0.6rem;
  text-align: left;
}
table.dos-table th { color: var(--fg-bright); background: rgba(255,255,255,0.05); }

/* ---------- cursor ---------- */
.cursor {
  display: inline-block;
  width: 0.55em;
  height: 1em;
  background: var(--fg-bright);
  vertical-align: text-bottom;
  margin-left: 2px;
  animation: blink 1s steps(1) infinite;
}
@media (prefers-reduced-motion: reduce) {
  .cursor { animation: none; opacity: 1; }
}
@keyframes blink { 50% { opacity: 0; } }

/* ---------- buttons / links styled as DOS controls ---------- */
.btn {
  display: inline-block;
  font-family: inherit;
  background: var(--bg);
  color: var(--fg-bright);
  border: 2px solid var(--fg);
  padding: 0.45rem 1rem;
  cursor: pointer;
  font-size: 0.95rem;
}
.btn:hover, .btn:focus-visible {
  background: var(--fg-bright);
  color: var(--bg);
}
.btn.accent { border-color: var(--yellow); color: var(--yellow); }
.btn.accent:hover, .btn.accent:focus-visible { background: var(--yellow); color: var(--bg); }

/* ---------- sound toggle (top-right, present on every page) ---------- */
.sound-toggle {
  position: fixed;
  top: 0.6rem;
  right: 0.75rem;
  z-index: 60;
  font-size: 0.75rem;
  background: var(--bg);
  border: 1px solid var(--fg);
  color: var(--fg);
  padding: 0.3rem 0.6rem;
  cursor: pointer;
  font-family: inherit;
}
.sound-toggle[data-on="true"] { color: var(--green); border-color: var(--green); }

/* ---------- for-sale ribbon (consistent across all pages) ---------- */
.sysop-notice {
  margin: 2.5rem 0 0.5rem;
  border-top: 1px dashed var(--fg);
  padding-top: 0.75rem;
  font-size: 0.85rem;
  color: var(--fg);
}
.sysop-notice .blink-tag {
  color: var(--bg);
  background: var(--red);
  padding: 0 0.4em;
  font-weight: bold;
  margin-right: 0.5em;
}
@media (prefers-reduced-motion: no-preference) {
  .sysop-notice .blink-tag { animation: blink 1.1s steps(1) infinite; }
}
.sysop-notice a { color: var(--yellow); }

footer.statusbar {
  max-width: var(--col-max);
  margin: 2.5rem auto 0;
  border-top: 2px solid var(--fg);
  padding-top: 0.5rem;
  font-size: 0.78rem;
  color: var(--fg);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.35rem 1rem;
}

/* ---------- connect sequence (index hero) ---------- */
#connect-screen {
  min-height: 40vh;
}
#connect-log {
  white-space: pre-wrap;
  min-height: 8em;
  margin: 1rem 0;
}
#connect-log .line { display: block; }

/* ---------- guestbook ---------- */
.gb-entry {
  border-bottom: 1px dashed var(--fg);
  padding: 0.6rem 0;
}
.gb-entry:last-child { border-bottom: none; }
.gb-meta { color: var(--green); font-size: 0.85rem; }
.gb-origin { color: var(--fg); font-size: 0.8rem; }
textarea, input[type="text"] {
  font-family: inherit;
  background: var(--bg);
  color: var(--fg-bright);
  border: 2px solid var(--fg);
  padding: 0.5rem;
  width: 100%;
  font-size: 0.95rem;
}
textarea:focus, input[type="text"]:focus {
  outline: 2px solid var(--cyan);
  outline-offset: 1px;
}
label { display: block; margin: 0.75rem 0 0.25rem; color: var(--fg-bright); }

/* ---------- BIOS boot screen (index only) ---------- */
.bios-screen {
  position: fixed;
  inset: 0;
  z-index: 55;
  background: #000000;
  color: #AAAAAA;
  font-family: var(--font-main);
  padding: 2.5rem 2rem;
  overflow: hidden;
  transition: opacity 0.45s ease;
}
.bios-screen.hidden { opacity: 0; pointer-events: none; }
#bios-text {
  white-space: pre-wrap;
  margin: 0;
  font-size: clamp(0.75rem, 1.6vw, 0.95rem);
  line-height: 1.45;
}
.bios-skip {
  margin-top: 1.5rem;
  color: var(--fg-bright);
  font-size: 0.85rem;
}
.win-terminal {
  margin: 1.5rem 0 2rem;
  border: 2px solid #7a7a7a;
  border-radius: 4px;
  box-shadow: 3px 3px 0 rgba(0,0,0,0.5), 0 0 18px rgba(85,255,255,0.06);
  background: #000000;
  overflow: hidden;
}
.win-titlebar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: linear-gradient(180deg, #1a1a8c, #0000AA);
  color: var(--fg-bright);
  padding: 0.3rem 0.5rem;
  font-size: 0.85rem;
  cursor: default;
  user-select: none;
}
.win-title { display: flex; align-items: center; gap: 0.4em; }
.win-buttons { display: flex; gap: 0.3rem; }
.win-buttons button {
  width: 1.3rem;
  height: 1.1rem;
  font-family: inherit;
  font-size: 0.75rem;
  line-height: 1;
  background: #C0C0C0;
  color: #000;
  border: 1px solid #000;
  border-top-color: #fff;
  border-left-color: #fff;
  cursor: pointer;
  padding: 0;
}
.win-buttons button:active {
  border-top-color: #000;
  border-left-color: #000;
  border-bottom-color: #fff;
  border-right-color: #fff;
}
.win-body {
  padding: 0.75rem 0.85rem;
  height: 60vh;
  min-height: 320px;
  max-height: 560px;
  display: flex;
  flex-direction: column;
}
.win-terminal.minimized .win-body { display: none; }
.win-terminal.maximized .win-body { height: 80vh; max-height: none; }

#term-output {
  flex: 1;
  overflow-y: auto;
  font-size: 0.88rem;
  line-height: 1.4;
  color: var(--fg);
  white-space: pre-wrap;
  word-break: break-word;
}
.term-line { min-height: 1.2em; }
.term-line.term-err { color: var(--red); }
.term-line.ok { color: var(--green); }
.term-line.hl { color: var(--yellow); }
.term-line.dim { color: #6c6c6c; }
.term-line.term-h { color: var(--yellow); text-decoration: underline; }
.term-line.term-matrix { color: var(--green); letter-spacing: 0.08em; }
.term-cmd { color: var(--cyan); }
.term-prompt-echo { color: var(--fg-bright); }

.term-input-row {
  display: flex;
  align-items: center;
  gap: 0.4em;
  padding-top: 0.4rem;
  border-top: 1px dashed #444;
  margin-top: 0.4rem;
}
#term-prompt {
  color: var(--green);
  white-space: nowrap;
  font-size: 0.88rem;
}
#term-input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--fg-bright);
  font-family: inherit;
  font-size: 0.88rem;
  padding: 0;
  caret-color: var(--fg-bright);
}
#term-input:focus { outline: none; }

.term-help-list {
  margin: 1rem 0 2rem;
}
.term-help-list summary {
  cursor: pointer;
  color: var(--cyan);
}

@media (max-width: 480px) {
  body { font-size: 15px; padding: 1rem 0.6rem 2.5rem; }
  .topbar { font-size: 0.75rem; }
  .win-body { height: 65vh; min-height: 280px; }
}