/* ===========================================================================
 * Terminal-themed portfolio styles
 *
 * 配色は「ダークターミナル + シンタックスハイライト」の世界観に寄せている。
 * カラーは CSS Custom Property で集約し、テーマ変更を1箇所で完結させている。
 * =========================================================================== */

:root {
  /* Background layers */
  --bg: #0b0e14;
  --bg-window: #11151c;
  --bg-prompt: #0d1219;
  --border: #1f2733;
  --border-strong: #2a3340;

  /* Foregrounds */
  --fg: #c9d1d9;
  --fg-muted: #6e7889;
  --fg-dim: #4a5466;

  /* Accents */
  --accent-green: #7ce38b;
  --accent-cyan: #79c0ff;
  --accent-yellow: #e3b341;
  --accent-pink: #ff7b72;
  --accent-purple: #d2a8ff;

  /* Traffic light dots */
  --dot-red: #ff5f56;
  --dot-yellow: #ffbd2e;
  --dot-green: #27c93f;

  /* Layout */
  --radius: 10px;
  --radius-sm: 6px;
  --gap: 1rem;
  --content-max: 960px;

  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--bg);
  color: var(--fg);
  font-family: "JetBrains Mono", "Fira Code", "SF Mono", "Cascadia Code",
    "Source Code Pro", "Menlo", "Consolas", "Noto Sans Mono CJK JP",
    "Noto Sans JP", monospace;
  font-size: 15px;
  line-height: 1.7;
  min-height: 100dvh;
  /* 軽いスキャンライン: 派手にしないために透明度を抑え目にしている */
  background-image: linear-gradient(
    rgba(255, 255, 255, 0.014) 50%,
    rgba(0, 0, 0, 0.014) 50%
  );
  background-size: 100% 3px;
  padding: clamp(1rem, 4vw, 2.5rem);
}

a {
  color: var(--accent-cyan);
  text-decoration: none;
  border-bottom: 1px dashed transparent;
  transition: border-color 120ms ease, color 120ms ease;
}
a:hover {
  border-bottom-color: var(--accent-cyan);
  color: var(--accent-green);
}

::selection {
  background: rgba(124, 227, 139, 0.25);
  color: var(--fg);
}

/* ---------------------------------------------------------------------------
 * Terminal window frame
 * ------------------------------------------------------------------------- */

.window {
  max-width: var(--content-max);
  margin: 0 auto;
  background: var(--bg-window);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.55),
    0 0 0 1px rgba(124, 227, 139, 0.04) inset;
  overflow: hidden;
}

.window__titlebar {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.65rem 1rem;
  background: linear-gradient(180deg, #1a212c 0%, #141a23 100%);
  border-bottom: 1px solid var(--border-strong);
  user-select: none;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  display: inline-block;
}
.dot--red {
  background: var(--dot-red);
}
.dot--yellow {
  background: var(--dot-yellow);
}
.dot--green {
  background: var(--dot-green);
}

.window__title {
  flex: 1;
  text-align: center;
  font-size: 0.8rem;
  color: var(--fg-muted);
  letter-spacing: 0.04em;
}

.window__body {
  padding: 1.5rem clamp(1rem, 3vw, 2rem) 2rem;
}

/* ---------------------------------------------------------------------------
 * Prompt / sections
 * ------------------------------------------------------------------------- */

.section {
  margin: 1.6rem 0 2.2rem;
}

.prompt {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.4rem;
  font-size: 0.95rem;
  margin-bottom: 0.9rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px dashed var(--border);
}

.prompt__user {
  color: var(--accent-green);
}
.prompt__at {
  color: var(--fg-muted);
}
.prompt__host {
  color: var(--accent-cyan);
}
.prompt__path {
  color: var(--accent-yellow);
}
.prompt__sigil {
  color: var(--accent-pink);
  font-weight: 700;
}
.prompt__cmd {
  color: var(--fg);
}
.prompt__flag {
  color: var(--accent-purple);
}

/* ---------------------------------------------------------------------------
 * Hero block
 * ------------------------------------------------------------------------- */

.hero {
  padding: 0.5rem 0 1.2rem;
}

.hero__handle {
  display: inline-block;
  font-size: clamp(1.6rem, 3.6vw, 2.4rem);
  margin: 0;
  color: var(--accent-green);
  letter-spacing: 0.02em;
}

.hero__handle::before {
  content: "$ ";
  color: var(--fg-muted);
}

.hero__headline {
  margin: 0.4rem 0 0;
  color: var(--fg);
}

.hero__updated {
  margin-top: 0.5rem;
  color: var(--fg-dim);
  font-size: 0.85rem;
}

/* ---------------------------------------------------------------------------
 * Summary list
 * ------------------------------------------------------------------------- */

.summary {
  margin: 0;
  padding-left: 1.2rem;
  list-style: none;
}
.summary li {
  position: relative;
  margin-bottom: 0.4rem;
}
.summary li::before {
  content: "›";
  position: absolute;
  left: -1.1rem;
  color: var(--accent-pink);
  font-weight: 700;
}

/* ---------------------------------------------------------------------------
 * Timeline (education / experience)
 * ------------------------------------------------------------------------- */

.timeline {
  list-style: none;
  margin: 0;
  padding: 0;
}

.timeline__item {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 1rem;
  padding: 0.5rem 0;
  border-top: 1px dashed var(--border);
}
.timeline__item:first-child {
  border-top: none;
}

.timeline__when {
  color: var(--accent-yellow);
  font-variant-numeric: tabular-nums;
}

.timeline__title {
  font-weight: 600;
  color: var(--fg);
}

.timeline__notes {
  margin: 0.3rem 0 0;
  padding-left: 1.1rem;
  list-style: none;
}
.timeline__notes li {
  position: relative;
  color: var(--fg-muted);
  font-size: 0.92rem;
}
.timeline__notes li::before {
  content: "→";
  position: absolute;
  left: -1rem;
  color: var(--accent-cyan);
}

@media (max-width: 600px) {
  .timeline__item {
    grid-template-columns: 1fr;
    gap: 0.2rem;
  }
}

/* ---------------------------------------------------------------------------
 * Project cards
 * ------------------------------------------------------------------------- */

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

.project {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 1rem 1.1rem 1.1rem;
  background: var(--bg-prompt);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: border-color 120ms ease, transform 120ms ease;
}
.project:hover {
  border-color: var(--accent-green);
  transform: translateY(-1px);
}

.project__name {
  margin: 0 0 0.2rem;
  font-size: 1rem;
  color: var(--accent-green);
}
.project__name::before {
  content: "// ";
  color: var(--fg-dim);
}

.project__desc {
  margin: 0.2rem 0 0.8rem;
  color: var(--fg);
  font-size: 0.92rem;
  flex-grow: 1;
}

.project__repo {
  font-size: 0.85rem;
  color: var(--accent-cyan);
  word-break: break-all;
}
.project__repo::before {
  content: "$ git clone ";
  color: var(--fg-dim);
}

/* ---------------------------------------------------------------------------
 * Skill bars
 * ------------------------------------------------------------------------- */

.skill-group {
  margin-bottom: 1.1rem;
}

.skill-group__title {
  margin: 0 0 0.5rem;
  color: var(--accent-purple);
  font-size: 0.92rem;
}
.skill-group__title::before {
  content: "[";
  color: var(--fg-dim);
}
.skill-group__title::after {
  content: "]";
  color: var(--fg-dim);
}

.skill {
  display: grid;
  grid-template-columns: 140px 110px 1fr;
  align-items: center;
  gap: 0.8rem;
  padding: 0.25rem 0;
}

.skill__name {
  color: var(--fg);
}

.skill__bar {
  font-family: inherit;
  letter-spacing: 0.15em;
  color: var(--accent-green);
}
.skill__bar .skill__bar-empty {
  color: var(--fg-dim);
}

.skill__detail {
  color: var(--fg-muted);
  font-size: 0.86rem;
}

@media (max-width: 600px) {
  .skill {
    grid-template-columns: 1fr;
    gap: 0.1rem;
  }
}

/* ---------------------------------------------------------------------------
 * Links / contact
 * ------------------------------------------------------------------------- */

.links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.4rem;
}
.links li::before {
  content: "$ open ";
  color: var(--fg-dim);
}

.footer {
  margin-top: 2.5rem;
  padding-top: 1rem;
  border-top: 1px dashed var(--border);
  color: var(--fg-dim);
  font-size: 0.82rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}