/* oliama — Osaka studio for code & line */
:root {
  --bg: #121316;
  --black: #08080A;
  --card: #181A20;
  --elev: #1F222B;
  --tiffany: #0ABAB5;
  --tiffany-dim: #085754;
  --tiffany-glow: rgba(10, 186, 181, 0.25);
  --ink: #F1F3F5;
  --ink-2: #A0A5B1;
  --ink-3: #636875;
  --line: rgba(255, 255, 255, 0.08);
  --line-t: rgba(10, 186, 181, 0.3);
  --f-display: 'Syne', sans-serif;
  --f-body: 'Plus Jakarta Sans', sans-serif;
  --f-mono: 'Space Mono', monospace;
  --f-jp: 'Noto Serif JP', serif;
}

html { scrollbar-color: var(--tiffany-dim) var(--black); }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--f-body);
  font-weight: 300;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

::selection { background: var(--tiffany); color: var(--black); }

h1, h2, h3, .display-font { font-family: var(--f-display); font-weight: 800; letter-spacing: -0.02em; line-height: 1.08; }
.mono { font-family: var(--f-mono); }
.kanji { font-family: var(--f-jp); }
a { color: var(--ink); text-decoration: none; }
a:hover { color: var(--tiffany); }
img { max-width: 100%; }

:focus-visible { outline: 2px solid var(--tiffany); outline-offset: 3px; border-radius: 1px; }

/* ---------- header ---------- */
.site-nav {
  background: rgba(18, 19, 22, 0.86);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.35s ease;
  z-index: 1030;
}
.site-nav.scrolled { border-bottom-color: var(--line); }
.nav-wrap { display: flex; align-items: center; gap: 2rem; height: 74px; }
.brand { display: inline-flex; align-items: center; gap: 0.65rem; }
.brand:hover { color: var(--ink); }
.brand-mark { width: 30px; height: 30px; flex: none; }
.brand-word { font-family: var(--f-display); font-weight: 800; font-size: 1.3rem; letter-spacing: 0.01em; color: var(--ink); }
.nav-links { list-style: none; display: flex; gap: 1.9rem; margin: 0 0 0 auto; padding: 0; }
.nav-links a {
  font-family: var(--f-mono); font-size: 0.72rem; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--ink-2); position: relative; padding: 0.3rem 0;
  transition: color 0.25s ease;
}
.nav-links a::after {
  content: ""; position: absolute; left: 0; bottom: 0; height: 1px; width: 0;
  background: var(--tiffany); transition: width 0.3s ease;
}
.nav-links a:hover { color: var(--ink); }
.nav-links a:hover::after { width: 100%; }
.nav-links a.active { color: var(--tiffany); }
.nav-links a.active::after { width: 100%; }
.nav-toggle {
  background: none; border: 1px solid var(--line); width: 44px; height: 44px;
  display: inline-flex; flex-direction: column; align-items: center; justify-content: center; gap: 6px;
}
.nav-toggle span { display: block; width: 18px; height: 1.5px; background: var(--ink); }

.mobile-nav { background: var(--black); color: var(--ink); width: 320px; }
.mobile-nav .btn-close { filter: invert(1); }
.mobile-nav a.m-link {
  display: block; font-family: var(--f-display); font-weight: 700; font-size: 1.6rem;
  padding: 0.55rem 0; border-bottom: 1px solid var(--line); color: var(--ink);
}
.mobile-nav a.m-link:hover { color: var(--tiffany); }
.mobile-meta { font-family: var(--f-mono); font-size: 0.75rem; color: var(--ink-3); line-height: 2; }

/* ---------- buttons ---------- */
.btn-ink {
  background: var(--tiffany); color: var(--black); border: 1px solid var(--tiffany);
  font-family: var(--f-mono); font-size: 0.72rem; letter-spacing: 0.14em; text-transform: uppercase;
  padding: 0.85rem 1.5rem; border-radius: 2px; font-weight: 700;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}
.btn-ink:hover { background: #12d4ce; color: var(--black); transform: translateY(-2px); box-shadow: 0 8px 30px var(--tiffany-glow); }
.btn-ghost {
  background: transparent; color: var(--ink); border: 1px solid var(--line);
  font-family: var(--f-mono); font-size: 0.72rem; letter-spacing: 0.14em; text-transform: uppercase;
  padding: 0.85rem 1.5rem; border-radius: 2px;
  transition: border-color 0.25s ease, color 0.25s ease, transform 0.25s ease;
}
.btn-ghost:hover { border-color: var(--tiffany); color: var(--tiffany); transform: translateY(-2px); }
.text-link {
  font-family: var(--f-mono); font-size: 0.75rem; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--tiffany); display: inline-flex; align-items: center; gap: 0.5rem;
}
.text-link i { transition: transform 0.25s ease; }
.text-link:hover i { transform: translateX(4px); }

/* ---------- shared ---------- */
.pad { padding: clamp(4.5rem, 9vw, 8rem) 0; }
.pad-sm { padding: clamp(3rem, 6vw, 5rem) 0; }
.eyebrow {
  font-family: var(--f-mono); font-size: 0.68rem; letter-spacing: 0.3em;
  text-transform: uppercase; color: var(--tiffany); display: inline-flex; align-items: center; gap: 0.7rem;
}
.eyebrow::before { content: ""; width: 28px; height: 1px; background: var(--tiffany); }
.rule { height: 1px; background: var(--line); border: 0; }
.lead-copy { color: var(--ink-2); font-size: 1.05rem; max-width: 62ch; }
.small-copy { color: var(--ink-2); font-size: 0.92rem; }
.muted { color: var(--ink-3); }
.bg-black-sec { background: var(--black); }
.kanji-mark {
  position: absolute; font-family: var(--f-jp); font-weight: 700;
  color: rgba(255, 255, 255, 0.032); line-height: 1; pointer-events: none; user-select: none;
}
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 2rem; flex-wrap: wrap; margin-bottom: clamp(2rem, 5vw, 3.5rem); }
.section-head h2 { font-size: clamp(1.9rem, 3.6vw, 2.9rem); margin: 0.6rem 0 0; }

.frame { position: relative; border: 1px solid var(--line); }
.frame img { display: block; width: 100%; height: 100%; object-fit: cover; filter: grayscale(0.35) contrast(1.05); }
.frame::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(8, 8, 10, 0) 55%, rgba(8, 8, 10, 0.55) 100%);
  pointer-events: none;
}
.frame .corner {
  position: absolute; width: 14px; height: 14px; border-color: var(--tiffany); border-style: solid; z-index: 2;
}
.corner.tl { top: -1px; left: -1px; border-width: 2px 0 0 2px; }
.corner.br { bottom: -1px; right: -1px; border-width: 0 2px 2px 0; }
.frame-cap {
  font-family: var(--f-mono); font-size: 0.68rem; letter-spacing: 0.12em;
  color: var(--ink-3); margin-top: 0.7rem; text-transform: uppercase;
}

/* ---------- hero ---------- */
.hero { position: relative; padding: clamp(9rem, 16vh, 12rem) 0 clamp(4rem, 8vw, 6rem); overflow: hidden; }
.hero-glow {
  position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(circle at 68% 18%, rgba(10, 186, 181, 0.1) 0%, rgba(18, 19, 22, 0) 55%);
}
.hero-title { font-size: clamp(2.6rem, 5.4vw, 4.8rem); margin: 1.4rem 0 1.8rem; }
.hero-title em { font-family: var(--f-jp); font-style: normal; color: var(--tiffany); }
.mask { display: block; overflow: hidden; }
.mask > span { display: block; will-change: transform; }
.hero-sub { color: var(--ink-2); max-width: 46ch; font-size: 1.02rem; }
.status-pill {
  display: inline-flex; align-items: center; gap: 0.6rem; border: 1px solid var(--line);
  padding: 0.45rem 0.95rem; border-radius: 100px; font-family: var(--f-mono);
  font-size: 0.68rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-2);
}
.status-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--tiffany); animation: pulse 2.4s ease-in-out infinite; }
@keyframes pulse { 0%, 100% { box-shadow: 0 0 0 0 var(--tiffany-glow); } 50% { box-shadow: 0 0 0 7px transparent; } }
.hero-figure { position: relative; }
.hero-figure .frame { aspect-ratio: 4 / 5; }
.hero-figure .v-kanji {
  position: absolute; top: 1.4rem; right: 1.2rem; writing-mode: vertical-rl;
  font-family: var(--f-jp); font-size: 1.05rem; letter-spacing: 0.5em; color: rgba(241, 243, 245, 0.85); z-index: 3;
  text-shadow: 0 1px 8px rgba(8, 8, 10, 0.8);
}
.hero-tag {
  position: absolute; bottom: -1.2rem; left: -1.2rem; background: var(--black);
  border: 1px solid var(--line); padding: 0.9rem 1.2rem; z-index: 4;
  font-family: var(--f-mono); font-size: 0.68rem; letter-spacing: 0.1em; color: var(--ink-2); text-transform: uppercase;
}
.hero-tag b { color: var(--tiffany); font-weight: 700; display: block; font-size: 0.78rem; }

/* ---------- marquee ---------- */
.marquee { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); overflow: hidden; padding: 1.1rem 0; background: var(--black); }
.marquee-track { display: flex; width: max-content; animation: slide 42s linear infinite; }
.marquee-track span {
  font-family: var(--f-mono); font-size: 0.74rem; letter-spacing: 0.28em; text-transform: uppercase;
  color: var(--ink-2); padding: 0 2.4rem; white-space: nowrap; display: inline-flex; align-items: center; gap: 2.4rem;
}
.marquee-track span::after { content: "◆"; color: var(--tiffany); font-size: 0.5rem; }
@keyframes slide { to { transform: translateX(-50%); } }
@media (prefers-reduced-motion: reduce) { .marquee-track { animation: none; } }

/* ---------- pillars ---------- */
.pillar {
  background: var(--card); border: 1px solid var(--line); padding: clamp(1.8rem, 3vw, 2.8rem);
  height: 100%; position: relative; transition: border-color 0.3s ease, transform 0.3s ease;
}
.pillar:hover { border-color: var(--line-t); transform: translateY(-4px); }
.pillar .p-index {
  font-family: var(--f-display); font-size: clamp(3.4rem, 6vw, 5rem); font-weight: 800;
  color: transparent; -webkit-text-stroke: 1px var(--ink-3); line-height: 1;
}
.pillar h3 { font-size: clamp(1.5rem, 2.4vw, 2rem); margin: 0.4rem 0 0.2rem; }
.pillar .p-kanji { color: var(--tiffany); font-size: 1rem; }
.pillar ul { list-style: none; padding: 0; margin: 1.4rem 0 0; }
.pillar li {
  padding: 0.7rem 0; border-top: 1px solid var(--line); color: var(--ink-2); font-size: 0.92rem;
  display: flex; gap: 0.8rem; align-items: baseline;
}
.pillar li::before { content: "—"; color: var(--tiffany); }
.pillar .frame { margin-top: 1.8rem; aspect-ratio: 16 / 9; }

/* ---------- code card ---------- */
.code-card { background: var(--black); border: 1px solid var(--line); font-family: var(--f-mono); font-size: 0.8rem; line-height: 1.85; height: 100%; }
.code-head { display: flex; align-items: center; gap: 0.5rem; padding: 0.7rem 1rem; border-bottom: 1px solid var(--line); color: var(--ink-3); font-size: 0.66rem; letter-spacing: 0.14em; text-transform: uppercase; }
.code-head i { width: 8px; height: 8px; border-radius: 50%; background: var(--elev); display: inline-block; }
.code-head i:first-child { background: var(--tiffany-dim); }
.code-card pre { margin: 0; padding: 1.2rem 1.3rem; white-space: pre-wrap; color: var(--ink-2); }
.c-k { color: var(--tiffany); }
.c-s { color: #d8b26a; }
.c-c { color: var(--ink-3); font-style: italic; }
.c-f { color: var(--ink); }

/* ---------- sketchbook ---------- */
.filter-bar { display: flex; gap: 0.6rem; flex-wrap: wrap; }
.filter-btn {
  background: transparent; border: 1px solid var(--line); color: var(--ink-2);
  font-family: var(--f-mono); font-size: 0.68rem; letter-spacing: 0.14em; text-transform: uppercase;
  padding: 0.6rem 1.1rem; border-radius: 100px; transition: all 0.25s ease;
}
.filter-btn:hover { border-color: var(--tiffany); color: var(--tiffany); }
.filter-btn.active { background: var(--tiffany); border-color: var(--tiffany); color: var(--black); font-weight: 700; }
.work { background: var(--card); border: 1px solid var(--line); transition: border-color 0.3s ease, transform 0.3s ease; }
.work:hover { border-color: var(--line-t); transform: translateY(-4px); }
.work .w-body { padding: 1.1rem 1.2rem 1.2rem; }
.work .w-cat { font-family: var(--f-mono); font-size: 0.62rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--tiffany); }
.work .w-title { font-family: var(--f-display); font-weight: 700; font-size: 1.02rem; margin-top: 0.35rem; }
.work .w-note { color: var(--ink-3); font-size: 0.82rem; margin: 0.3rem 0 0; }
.work .frame { border: 0; border-bottom: 1px solid var(--line); aspect-ratio: 16 / 10; }
.work .code-card { border: 0; border-bottom: 1px solid var(--line); }
.art-panel {
  background: radial-gradient(circle at 50% 35%, rgba(10, 186, 181, 0.07), rgba(8, 8, 10, 0) 70%), var(--black);
  border-bottom: 1px solid var(--line); display: flex; align-items: center; justify-content: center;
  aspect-ratio: 16 / 10; padding: 1.6rem;
}
.art-panel svg { max-height: 100%; }
.work.hide, [data-cat].hide { display: none; }

/* ---------- process ---------- */
.step { border-top: 1px solid var(--line); padding: 1.6rem 0 0; }
.step .s-no { font-family: var(--f-mono); color: var(--tiffany); font-size: 0.75rem; letter-spacing: 0.2em; }
.step h3 { font-size: 1.15rem; margin: 0.7rem 0 0.5rem; }
.step p { color: var(--ink-2); font-size: 0.9rem; margin: 0; }

/* ---------- accordion ---------- */
.accordion { --bs-accordion-bg: transparent; --bs-accordion-border-color: var(--line); --bs-accordion-btn-color: var(--ink); --bs-accordion-active-bg: transparent; --bs-accordion-active-color: var(--tiffany); --bs-accordion-btn-focus-box-shadow: none; }
.accordion-button { font-family: var(--f-display); font-weight: 700; font-size: 1.02rem; padding: 1.3rem 0.2rem; }
.accordion-button:not(.collapsed) { box-shadow: none; }
.accordion-button::after { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%230ABAB5' viewBox='0 0 16 16'%3E%3Cpath d='M8 4a.5.5 0 0 1 .5.5v3h3a.5.5 0 0 1 0 1h-3v3a.5.5 0 0 1-1 0v-3h-3a.5.5 0 0 1 0-1h3v-3A.5.5 0 0 1 8 4z'/%3E%3C/svg%3E"); transition: transform 0.3s ease; }
.accordion-button:not(.collapsed)::after { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%230ABAB5' viewBox='0 0 16 16'%3E%3Cpath d='M4 8a.5.5 0 0 1 .5-.5h7a.5.5 0 0 1 0 1h-7A.5.5 0 0 1 4 8z'/%3E%3C/svg%3E"); }
.accordion-body { color: var(--ink-2); font-size: 0.94rem; padding: 0 0.2rem 1.4rem; }
.accordion-item { border-left: 0; border-right: 0; }

/* ---------- notebook ---------- */
.entry { display: block; border-top: 1px solid var(--line); padding: 1.7rem 0; transition: padding-left 0.3s ease; }
.entry:hover { padding-left: 0.8rem; color: var(--ink); }
.entry .e-date { font-family: var(--f-mono); font-size: 0.68rem; letter-spacing: 0.16em; color: var(--ink-3); text-transform: uppercase; }
.entry .e-cat { font-family: var(--f-mono); font-size: 0.68rem; letter-spacing: 0.16em; color: var(--tiffany); text-transform: uppercase; }
.entry h3 { font-size: 1.3rem; margin: 0.5rem 0 0.3rem; }
.entry p { color: var(--ink-2); font-size: 0.92rem; margin: 0; max-width: 68ch; }
.featured-entry { background: var(--card); border: 1px solid var(--line); padding: clamp(1.8rem, 4vw, 3rem); position: relative; overflow: hidden; }
.featured-entry h2 { font-size: clamp(1.6rem, 3vw, 2.3rem); }

/* ---------- plans ---------- */
.plan { background: var(--card); border: 1px solid var(--line); padding: clamp(1.8rem, 3vw, 2.6rem); height: 100%; position: relative; transition: border-color 0.3s ease, transform 0.3s ease; }
.plan:hover { transform: translateY(-4px); border-color: var(--line-t); }
.plan.rec { border-color: var(--tiffany); }
.plan .rec-tag {
  position: absolute; top: -1px; right: -1px; background: var(--tiffany); color: var(--black);
  font-family: var(--f-mono); font-size: 0.6rem; letter-spacing: 0.18em; text-transform: uppercase;
  padding: 0.35rem 0.8rem; font-weight: 700;
}
.plan h3 { font-size: 1.4rem; }
.plan .price { font-family: var(--f-display); font-size: 2.1rem; font-weight: 800; margin: 0.9rem 0 0.1rem; }
.plan .price small { font-family: var(--f-mono); font-size: 0.7rem; color: var(--ink-3); letter-spacing: 0.1em; }
.plan .p-for { color: var(--ink-3); font-size: 0.85rem; }
.plan ul { list-style: none; padding: 0; margin: 1.4rem 0 0; }
.plan li { padding: 0.65rem 0; border-top: 1px solid var(--line); color: var(--ink-2); font-size: 0.9rem; display: flex; gap: 0.7rem; }
.plan li::before { content: "◆"; color: var(--tiffany); font-size: 0.55rem; margin-top: 0.4rem; }

/* ---------- forms ---------- */
.form-label { font-family: var(--f-mono); font-size: 0.68rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--ink-2); }
.form-control, .form-select {
  background: var(--black); border: 1px solid var(--line); color: var(--ink);
  border-radius: 2px; padding: 0.8rem 1rem; font-size: 0.95rem;
}
.form-control:focus, .form-select:focus { background: var(--black); color: var(--ink); border-color: var(--tiffany); box-shadow: 0 0 0 3px var(--tiffany-glow); }
.form-control::placeholder { color: var(--ink-3); }
.form-select option { background: var(--black); }
.form-check-input { background-color: var(--black); border-color: var(--line); }
.form-check-input:checked { background-color: var(--tiffany); border-color: var(--tiffany); }
.invalid-feedback { color: #e0705a; }
.form-success { border: 1px solid var(--line-t); background: rgba(10, 186, 181, 0.06); padding: 2.2rem; }

/* ---------- visit ---------- */
.info-block { border-top: 1px solid var(--line); padding: 1.4rem 0; }
.info-block .ib-label { font-family: var(--f-mono); font-size: 0.66rem; letter-spacing: 0.22em; text-transform: uppercase; color: var(--tiffany); }
.info-block .ib-value { font-size: 1.15rem; margin-top: 0.45rem; font-weight: 400; }
.info-block .ib-note { color: var(--ink-3); font-size: 0.84rem; margin-top: 0.3rem; }
.map-frame { border: 1px solid var(--line); filter: grayscale(1) invert(0.92) contrast(0.9); }
.map-frame iframe { display: block; width: 100%; height: 100%; border: 0; min-height: 340px; }

/* ---------- legal ---------- */
.legal h2 { font-size: 1.25rem; margin: 2.6rem 0 0.8rem; }
.legal p, .legal li { color: var(--ink-2); font-size: 0.95rem; }
.legal ul { padding-left: 1.2rem; }

/* ---------- CTA band ---------- */
.cta-band { background: var(--black); border-top: 1px solid var(--line); position: relative; overflow: hidden; }
.cta-band h2 { font-size: clamp(2rem, 4.6vw, 3.6rem); }
.cta-band .kanji-mark { font-size: 16rem; right: -2rem; top: -4rem; }

/* ---------- footer ---------- */
.site-footer { background: var(--black); border-top: 1px solid var(--line); padding: clamp(3.5rem, 7vw, 5.5rem) 0 0; }
.site-footer .f-title { font-family: var(--f-mono); font-size: 0.66rem; letter-spacing: 0.24em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 1.1rem; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin-bottom: 0.55rem; }
.site-footer li a { color: var(--ink-2); font-size: 0.9rem; transition: color 0.2s ease; }
.site-footer li a:hover { color: var(--tiffany); }
.site-footer address { font-style: normal; color: var(--ink-2); font-size: 0.9rem; line-height: 1.9; }
.f-blurb { color: var(--ink-2); font-size: 0.92rem; max-width: 34ch; }
.footer-bar {
  border-top: 1px solid var(--line); margin-top: 3.5rem; padding: 1.4rem 0;
  font-family: var(--f-mono); font-size: 0.68rem; letter-spacing: 0.12em; color: var(--ink-3); text-transform: uppercase;
  display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
}

/* ---------- page header ---------- */
.page-head { padding: clamp(9rem, 16vh, 12rem) 0 clamp(2.5rem, 5vw, 4rem); position: relative; overflow: hidden; }
.page-head h1 { font-size: clamp(2.6rem, 6vw, 4.6rem); margin: 1.2rem 0 1.2rem; }
.page-head .kanji-mark { font-size: 15rem; right: -1rem; top: 4rem; }

@media (max-width: 991.98px) {
  .hero-figure { margin-top: 3rem; }
  .hero-tag { left: 0.8rem; }
  .pillar .p-index { font-size: 3.2rem; }
}