/* ================================================================
   style.css — sawalyno.jp
   Aesthetic: Dark CRT terminal × Windows XP Luna retro
   ================================================================ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:         #0a0a0a;
  --bg-card:    #161616;
  --border:     #2a2a2a;
  --border-hi:  #3a3a3a;
  --border-hi2: #5a5a5a;
  --titlebar:   linear-gradient(180deg, #2c2c34 0%, #1a1a22 100%);
  --term-bg:    #000000;
  --term-green: #5fff8f;
  --prompt:     #4ade80;
  --text:       #e8e8e8;
  --sub:        #9a9a9a;
  --luna:       #4ea1ff;
  --yellow:     #ffcc33;
  --font-jp:    "Noto Sans JP", "Hiragino Sans", "Yu Gothic", sans-serif;
  --font-en:    "Hanken Grotesk", system-ui, sans-serif;
  --font-mono:  "JetBrains Mono", "Fira Code", "SF Mono", "Consolas", monospace;

  /* Luna blue gradient for active window titlebar */
  --titlebar-active: linear-gradient(180deg, #2a5fac 0%, #1440a0 40%, #0d2d7a 100%);
  --titlebar-active-border: #1e4a90;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-en);
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
}

/* Ambient CRT screen glow — as if you're sitting in a dark room */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 50% 38%, rgba(95,255,143,0.022) 0%, transparent 60%),
    radial-gradient(ellipse 80% 40% at 50% 100%, rgba(78,161,255,0.03) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

/* SVG noise overlay */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
  opacity: 0.035;
  pointer-events: none;
  z-index: 0;
}

/* Scanlines */
.scanlines {
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0,0,0,0.12) 2px,
    rgba(0,0,0,0.12) 4px
  );
  opacity: 0.030;
  pointer-events: none;
  z-index: 1;
}

@media (prefers-reduced-motion: reduce) {
  body::after, .scanlines { opacity: 0; }
}

/* ================================================================
   Skip Link
   ================================================================ */
.skip-link {
  position: absolute;
  top: -999px;
  left: 0;
  z-index: 9999;
  background: var(--luna);
  color: #000;
  padding: 8px 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  text-decoration: none;
}
.skip-link:focus { top: 0; outline: 2px solid var(--luna); outline-offset: 2px; }

/* ================================================================
   System Bar
   ================================================================ */
#sysbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 32px;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 14px;
  background: rgba(8,8,10,0.90);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(60,60,70,0.6);
  gap: 12px;
}

/* Subtle top-edge highlight on sysbar */
#sysbar::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.05) 30%, rgba(255,255,255,0.05) 70%, transparent);
  pointer-events: none;
}

.sysbar-left {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--sub);
  white-space: nowrap;
}
.sysbar-left img {
  width: 24px; height: 24px;
  image-rendering: pixelated;
  flex-shrink: 0;
}
.sysbar-name { color: #c8c8d0; font-weight: 700; letter-spacing: 0.01em; }
.sysbar-version { color: #555560; }

.sysbar-nav { display: flex; gap: 20px; list-style: none; }

#sysbar nav {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}

.sysbar-nav a {
  font-family: var(--font-mono);
  font-size: 12px;
  color: #6a6a78;
  text-decoration: none;
  position: relative;
  transition: color 150ms;
  padding-bottom: 2px;
}
/* Underline slide-in on hover */
.sysbar-nav a::after {
  content: '';
  position: absolute;
  bottom: -1px; left: 0;
  width: 0; height: 1px;
  background: var(--term-green);
  transition: width 180ms ease;
}
.sysbar-nav a:hover { color: var(--term-green); }
.sysbar-nav a:hover::after { width: 100%; }
.sysbar-nav a:focus-visible { outline: 2px solid var(--luna); outline-offset: 2px; }

.sysbar-clock {
  font-family: var(--font-mono);
  font-size: 12px;
  color: #555560;
  letter-spacing: 0.08em;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

@media (max-width: 767px) {
  .sysbar-version { display: none; }
  .sysbar-nav { gap: 14px; }
}

/* ================================================================
   Main
   ================================================================ */
main { padding-top: 32px; position: relative; z-index: 2; }

/* ================================================================
   Focus visible
   ================================================================ */
:focus-visible {
  outline: 2px solid var(--luna);
  outline-offset: 2px;
}

/* ================================================================
   Window Card (shared) — inactive state by default
   ================================================================ */
.window {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-top-color: var(--border-hi);
  border-radius: 4px;
  overflow: hidden;
  box-shadow:
    0 2px 8px rgba(0,0,0,0.5),
    0 0 0 1px rgba(0,0,0,0.3),
    inset 0 1px 0 rgba(255,255,255,0.03);
  transition: box-shadow 180ms ease;
}

/* Windows XP "active window" effect on hover */
.window:hover {
  box-shadow:
    0 4px 20px rgba(0,0,0,0.6),
    0 0 0 1px rgba(78,161,255,0.18),
    inset 0 1px 0 rgba(255,255,255,0.05);
}
.window:hover .window-titlebar {
  background: var(--titlebar-active);
  border-bottom-color: var(--titlebar-active-border);
}
.window:hover .titlebar-title {
  color: #c0d4f0;
}
.window:hover .titlebar-btn {
  color: #7090c0;
}

.window-titlebar {
  background: var(--titlebar);
  border-bottom: 1px solid var(--border);
  padding: 0 8px;
  height: 28px;
  display: flex;
  align-items: center;
  gap: 8px;
  user-select: none;
  position: relative;
  transition: background 180ms ease, border-color 180ms ease;
}
/* Bevel highlight on top of titlebar */
.window-titlebar::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: rgba(255,255,255,0.07);
  pointer-events: none;
}

.titlebar-icon {
  width: 32px; height: 32px;
  flex-shrink: 0;
  image-rendering: pixelated;
}
.titlebar-title {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--sub);
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: color 180ms ease;
}
.titlebar-controls {
  display: flex;
  gap: 4px;
  margin-left: auto;
}
.titlebar-btn {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--border-hi2);
  line-height: 1;
  transition: color 180ms ease;
  letter-spacing: 0.1em;
}
.window-body { padding: 24px 28px; }

/* ================================================================
   Section fade-in (IntersectionObserver)
   ================================================================ */
.fade-section {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 280ms ease, transform 280ms ease;
}
.fade-section.visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .fade-section { opacity: 1; transform: none; transition: none; }
}

/* ================================================================
   Bevel Button (CTA) — WinXP Luna style
   ================================================================ */
.btn-bevel {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 22px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--text);
  background: linear-gradient(180deg, #3a3a48 0%, #1e1e2c 100%);
  border: 1px solid #505062;
  border-bottom-color: #0e0e18;
  border-radius: 3px;
  cursor: pointer;
  text-decoration: none;
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.12),
    inset 1px 0 0 rgba(255,255,255,0.04),
    0 2px 6px rgba(0,0,0,0.5);
  transition: background 150ms, box-shadow 150ms, color 150ms, border-color 150ms;
  -webkit-font-smoothing: antialiased;
  letter-spacing: 0.01em;
}
.btn-bevel:hover {
  background: linear-gradient(180deg, #4a4a5c 0%, #28283a 100%);
  color: #fff;
  border-color: #6a6a80;
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.16),
    0 2px 10px rgba(0,0,0,0.5),
    0 0 16px rgba(78,161,255,0.10);
}
.btn-bevel:active {
  background: linear-gradient(180deg, #1e1e2c 0%, #2a2a3c 100%);
  box-shadow:
    0 0 0 2px rgba(78,161,255,0.4),
    0 0 12px rgba(78,161,255,0.2),
    inset 0 1px 3px rgba(0,0,0,0.4);
  border-color: #3a6aaa;
}
.btn-bevel:focus-visible { outline: 2px solid var(--luna); outline-offset: 2px; }

/* ================================================================
   Hero Section
   ================================================================ */
#hero {
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 56px 24px;
  position: relative;
}

/* Green ambient halo from the terminal */
#hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 65% 55% at 50% 45%, rgba(95,255,143,0.028) 0%, transparent 65%);
  pointer-events: none;
}

.hero-inner {
  width: 100%;
  max-width: 900px;
  position: relative;
  z-index: 1;
}

/* ── Terminal window ── */
.terminal-window {
  background: var(--term-bg);
  border: 1px solid #2a2a2a;
  border-radius: 4px;
  overflow: hidden;
  position: relative;
  box-shadow:
    0 8px 32px rgba(0,0,0,0.8),
    0 0 0 1px rgba(95,255,143,0.08),
    0 0 60px rgba(95,255,143,0.05),
    0 0 120px rgba(95,255,143,0.025);
}

/* CRT inner vignette */
.terminal-window::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 100% 100% at 50% 50%, transparent 60%, rgba(0,0,0,0.35) 100%);
  pointer-events: none;
  z-index: 1;
}

.terminal-titlebar {
  background: linear-gradient(180deg, #282832 0%, #181820 100%);
  border-bottom: 1px solid #222230;
  padding: 0 10px;
  height: 28px;
  display: flex;
  align-items: center;
  gap: 8px;
  user-select: none;
  position: relative;
  z-index: 2;
}
.terminal-titlebar::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: rgba(255,255,255,0.05);
  pointer-events: none;
}
.terminal-titlebar .titlebar-title {
  font-family: var(--font-mono);
  font-size: 12px;
  color: #555560;
}
.terminal-titlebar .titlebar-btn { color: #3a3a4a; }

.terminal-body {
  padding: 22px 26px 28px;
  min-height: 230px;
  position: relative;
  z-index: 2;
}

/* ── Terminal lines (phosphor CRT glow) ── */
.terminal-lines {
  font-family: var(--font-mono);
  /* Reset <pre> default whitespace so HTML indentation is not rendered */
  white-space: normal;
}

.terminal-line {
  display: block;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.85;
  color: var(--term-green);
  opacity: 0;
  white-space: pre-wrap;
  word-break: break-all;
  min-height: 1.85em;
  /* The signature phosphor CRT glow */
  text-shadow:
    0 0 8px rgba(95, 255, 143, 0.55),
    0 0 2px rgba(95, 255, 143, 0.8);
  transition: opacity 80ms ease;
}

.terminal-line.prompt-line {
  color: var(--prompt);
  text-shadow:
    0 0 8px rgba(74, 222, 128, 0.5),
    0 0 2px rgba(74, 222, 128, 0.75);
}
.terminal-line.tagline-line { color: var(--term-green); }
.terminal-line.visible { opacity: 1; }

/* Blinking cursor (WCAG 2.3.1 safe: ~0.91Hz) */
.cursor {
  display: inline-block;
  width: 8px;
  height: 0.9em;
  background: var(--term-green);
  vertical-align: text-bottom;
  margin-left: 1px;
  animation: cur-blink 1.1s step-end infinite;
  box-shadow: 0 0 6px rgba(95,255,143,0.8);
}
@keyframes cur-blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .cursor { animation: none; opacity: 1; }
  .terminal-line { opacity: 1; text-shadow: none; }
}

.hero-cta {
  margin-top: 32px;
  display: flex;
  justify-content: flex-start;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 300ms ease, transform 300ms ease;
}
.hero-cta.visible {
  opacity: 1;
  transform: none;
}

/* ================================================================
   Section heading
   ================================================================ */
.section-heading {
  font-family: var(--font-en);
  font-size: 22px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 0;
  letter-spacing: -0.01em;
}
.section-heading .prefix {
  font-family: var(--font-mono);
  color: #4a4a5a;
  font-weight: 400;
  font-size: 20px;
}

/* ================================================================
   About Section
   ================================================================ */
#about {
  padding: 72px 24px;
  max-width: 900px;
  margin: 0 auto;
}

#about .window-body h2 {
  font-family: var(--font-en);
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 14px;
  letter-spacing: -0.01em;
}

#about .window-body p {
  font-family: var(--font-jp);
  color: #b8b8c0;
  line-height: 1.95;
  font-size: 15px;
}

/* Operating Entity sub-card */
.entity-card {
  background: rgba(0,0,0,0.25);
  border: 1px solid #222228;
  border-left: 2px solid rgba(95,255,143,0.18);
  border-radius: 3px;
  padding: 16px 20px;
  margin-top: 28px;
}
.entity-label {
  font-family: var(--font-mono);
  font-size: 10px;
  color: #4a4a58;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  margin-bottom: 14px;
}
.entity-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.entity-table td {
  padding: 5px 0;
  vertical-align: top;
}
.entity-table th,
.entity-table td:first-child {
  font-family: var(--font-mono);
  color: #4a4a5a;
  font-size: 11px;
  width: 110px;
  padding-right: 16px;
  letter-spacing: 0.03em;
}
.entity-table td:last-child {
  color: #9a9aaa;
  font-family: var(--font-jp);
  font-size: 13px;
}

/* ================================================================
   Apps Section
   ================================================================ */
#apps {
  padding: 72px 24px;
  max-width: 900px;
  margin: 0 auto;
}

.apps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
}

.app-card .window-body { padding: 18px 22px 22px; }

.app-icon {
  width: 48px; height: 48px;
  margin-bottom: 14px;
  image-rendering: pixelated;
}
.app-name {
  font-family: var(--font-en);
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 6px;
  letter-spacing: -0.01em;
}
.app-genre {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 10px;
  color: #5a8acc;
  background: rgba(78,161,255,0.07);
  border: 1px solid rgba(78,161,255,0.15);
  border-radius: 2px;
  padding: 2px 8px;
  margin-bottom: 12px;
  letter-spacing: 0.02em;
}
.app-desc {
  font-family: var(--font-jp);
  font-size: 13px;
  color: #70707a;
  line-height: 1.75;
  margin-bottom: 16px;
}
.badge-coming-soon {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  color: #000;
  background: var(--yellow);
  padding: 3px 10px;
  border-radius: 2px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* Placeholder card */
.app-card-placeholder .window-body {
  display: flex;
  align-items: center;
  gap: 6px;
  min-height: 120px;
  color: #383840;
  font-family: var(--font-mono);
  font-size: 12px;
}
.cursor-apps {
  display: inline-block;
  width: 7px; height: 13px;
  background: #383840;
  animation: cur-blink 1.1s step-end infinite;
  vertical-align: middle;
  flex-shrink: 0;
}
@media (prefers-reduced-motion: reduce) {
  .cursor-apps { animation: none; opacity: 0.5; }
}

/* ================================================================
   Contact Section
   ================================================================ */
#contact {
  padding: 72px 24px;
  max-width: 900px;
  margin: 0 auto;
}
#contact .window-body p {
  font-family: var(--font-jp);
  color: #606068;
  margin-bottom: 20px;
  font-size: 14px;
}
.contact-email {
  font-family: var(--font-mono);
  font-size: 20px;
  color: var(--term-green);
  text-decoration: none;
  display: inline-block;
  letter-spacing: 0.02em;
  /* Phosphor glow on email — the visual anchor of this section */
  text-shadow:
    0 0 14px rgba(95,255,143,0.5),
    0 0 3px rgba(95,255,143,0.3);
  transition: color 150ms, text-shadow 150ms;
}
.contact-email:hover {
  color: var(--luna);
  text-shadow:
    0 0 14px rgba(78,161,255,0.45),
    0 0 3px rgba(78,161,255,0.25);
}
.contact-email:focus-visible {
  outline: 2px solid var(--term-green);
  outline-offset: 4px;
}

/* ================================================================
   Taskbar Footer
   ================================================================ */
#taskbar {
  position: relative;
  z-index: 2;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 10px;
  background: rgba(8,8,10,0.97);
  border-top: 1px solid #1e1e24;
  gap: 12px;
}
/* Inset top highlight (bevel) */
#taskbar::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.04) 20%, rgba(255,255,255,0.04) 80%, transparent);
  pointer-events: none;
}

/* Start button — decorative, cursor:default */
.start-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: #505060;
  padding: 4px 10px;
  background: linear-gradient(180deg, #262630 0%, #181820 100%);
  border: 1px solid #303038;
  border-radius: 2px;
  cursor: default;
  user-select: none;
  position: relative;
  transition: color 150ms;
  letter-spacing: 0.02em;
}
.start-btn:hover { color: #8080a0; }

/* One-shot ring (§5.5) */
.start-btn::after {
  content: '';
  position: absolute;
  inset: -3px;
  border: 2px solid var(--luna);
  border-radius: 4px;
  opacity: 0;
  pointer-events: none;
}
.start-btn:hover::after {
  animation: ring-once 300ms ease-out 1 forwards;
}
@keyframes ring-once {
  0%   { opacity: 0; transform: scale(0.92); }
  40%  { opacity: 0.8; transform: scale(1); }
  100% { opacity: 0; transform: scale(1.08); }
}
@media (prefers-reduced-motion: reduce) {
  .start-btn:hover::after { animation: none; }
  .start-btn:hover { color: var(--luna); }
}

.start-icon {
  width: 16px; height: 16px;
  image-rendering: pixelated;
  flex-shrink: 0;
}

.taskbar-center {
  font-family: var(--font-mono);
  font-size: 11px;
  color: #3a3a48;
  white-space: nowrap;
  flex: 1;
  text-align: center;
  letter-spacing: 0.01em;
}

.taskbar-links {
  display: flex;
  gap: 16px;
  align-items: center;
}
.taskbar-links a {
  font-family: var(--font-mono);
  font-size: 11px;
  color: #484858;
  text-decoration: none;
  transition: color 150ms;
  white-space: nowrap;
  letter-spacing: 0.02em;
}
.taskbar-links a:hover { color: var(--luna); }
.taskbar-links a:focus-visible { outline: 2px solid var(--luna); outline-offset: 2px; }

@media (max-width: 767px) {
  .taskbar-center { display: none; }
  .taskbar-links { gap: 12px; }
}