/* ===========================================================
   DESIGNCORE — Design Tokens
   에디토리얼 모노크롬 + 일렉트릭 코랄 액센트
   =========================================================== */

:root {
  /* ---- Color: Light (default) ---- */
  --paper:        #F4F1EA;   /* off-white, warm */
  --paper-2:      #ECE8DF;   /* slightly deeper */
  --ink:          #0E0E0C;   /* near-black */
  --ink-2:        #2A2A26;
  --muted:        #6B6B63;   /* secondary text */
  --line:         #1410100F; /* hairline ~6% */
  --line-strong:  #14101026;

  /* Accent — Electric Coral (라이트/다크 공통 시그니처) */
  --accent:       #FF4D2E;
  --accent-ink:   #FFFFFF;

  /* Semantic */
  --bg:           var(--paper);
  --bg-elev:      #FFFFFF;
  --fg:           var(--ink);
  --fg-muted:     var(--muted);
  --border:       var(--line);
  --border-strong:var(--line-strong);

  /* ---- Typography ---- */
  --font-display: "Archivo", "Noto Sans KR", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-sans:    "Archivo", "Noto Sans KR", -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  --font-mono:    "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  /* Type scale (fluid) */
  --t-mega:    clamp(64px, 11.5vw, 200px);
  --t-hero:    clamp(44px, 7.2vw,  126px);
  --t-h1:      clamp(36px, 4.6vw,  76px);
  --t-h2:      clamp(27px, 3.25vw, 50px);
  --t-h3:      clamp(20px, 1.6vw, 28px);
  --t-body-l:  clamp(17px, 1.2vw, 20px);
  --t-body:    16px;
  --t-meta:    13px;
  --t-micro:   11px;

  /* Spacing — 4px base */
  --s-1: 4px;
  --s-2: 8px;
  --s-3: 12px;
  --s-4: 16px;
  --s-5: 24px;
  --s-6: 32px;
  --s-7: 48px;
  --s-8: 64px;
  --s-9: 96px;
  --s-10: 128px;
  --s-11: 192px;

  /* Layout */
  --container: 1440px;
  --gutter: clamp(20px, 4vw, 56px);
  --header-h: 72px;

  /* Radius — almost none, editorial */
  --r-0: 0px;
  --r-1: 2px;
  --r-2: 6px;
  --r-pill: 999px;

  /* Motion */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --d-fast: 180ms;
  --d-base: 320ms;
  --d-slow: 600ms;
}

/* ---- Color: Dark ---- */
[data-theme="dark"] {
  --paper:        #0E0E0C;
  --paper-2:      #161613;
  --ink:          #F4F1EA;
  --ink-2:        #D6D2C8;
  --muted:        #8A8A82;
  --line:         #F4F1EA14;
  --line-strong:  #F4F1EA33;

  --bg:           var(--paper);
  --bg-elev:      #18181530;
  --fg:           var(--ink);
  --fg-muted:     var(--muted);
  --border:       var(--line);
  --border-strong:var(--line-strong);
}

/* ---- Accent variants ---- */
[data-accent="coral"]  { --accent: #FF4D2E; --accent-ink: #FFFFFF; }
[data-accent="indigo"] { --accent: #3D2EFF; --accent-ink: #FFFFFF; }
[data-accent="acid"]   { --accent: #D5FF3D; --accent-ink: #0E0E0C; }
[data-accent="ink"]    { --accent: #0E0E0C; --accent-ink: #F4F1EA; }
[data-theme="dark"][data-accent="ink"] { --accent: #F4F1EA; --accent-ink: #0E0E0C; }

/* ===========================================================
   Reset + Base
   =========================================================== */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: var(--t-body);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-feature-settings: "ss01", "cv11";
}
img, svg, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; background: none; border: 0; color: inherit; }
::selection { background: var(--accent); color: var(--accent-ink); }

/* ===========================================================
   Layout primitives
   =========================================================== */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding-inline: var(--gutter);
}
.full { width: 100%; }
.row { display: flex; }
.col { display: flex; flex-direction: column; }
.between { justify-content: space-between; }
.center { align-items: center; }
.gap-2 { gap: var(--s-2); }
.gap-3 { gap: var(--s-3); }
.gap-4 { gap: var(--s-4); }
.gap-5 { gap: var(--s-5); }
.gap-6 { gap: var(--s-6); }
.gap-8 { gap: var(--s-8); }

.hairline { border-top: 1px solid var(--border-strong); }
.hairline-b { border-bottom: 1px solid var(--border-strong); }

/* ===========================================================
   Typography utilities
   =========================================================== */
.t-mega   { font-family: var(--font-display); font-weight: 600; font-size: var(--t-mega); line-height: 0.92; letter-spacing: -0.045em; font-style: italic; }
.t-hero   { font-family: var(--font-display); font-weight: 600; font-size: var(--t-hero); line-height: 0.95; letter-spacing: -0.04em; }
.t-h1     { font-family: var(--font-display); font-weight: 600; font-size: var(--t-h1);   line-height: 1.0;  letter-spacing: -0.035em; }
.t-h2     { font-family: var(--font-display); font-weight: 600; font-size: var(--t-h2);   line-height: 1.05; letter-spacing: -0.025em; }
.t-h3     { font-family: var(--font-sans);    font-weight: 500; font-size: var(--t-h3);   line-height: 1.2;  letter-spacing: -0.01em; }
.t-body-l { font-size: var(--t-body-l); line-height: 1.5; }
.t-body   { font-size: var(--t-body); line-height: 1.6; }
.t-meta   { font-family: var(--font-mono); font-size: var(--t-meta); letter-spacing: 0.02em; text-transform: uppercase; color: var(--fg-muted); }
.t-micro  { font-family: var(--font-mono); font-size: var(--t-micro); letter-spacing: 0.06em; text-transform: uppercase; }
.t-italic { font-style: italic; }
.t-mono   { font-family: var(--font-mono); }
.t-muted  { color: var(--fg-muted); }

/* ===========================================================
   Components
   =========================================================== */

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--s-3);
  padding: 14px 22px;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.01em;
  border-radius: var(--r-pill);
  border: 1px solid transparent;
  transition: all var(--d-fast) var(--ease);
  white-space: nowrap;
}
.btn .arrow { transition: transform var(--d-base) var(--ease); }
.btn:hover .arrow { transform: translateX(4px); }

.btn-primary { background: var(--ink); color: var(--paper); }
.btn-primary:hover { background: var(--accent); color: var(--accent-ink); }
[data-theme="dark"] .btn-primary { background: var(--ink); color: var(--paper); }

.btn-accent { background: var(--accent); color: var(--accent-ink); }
.btn-accent:hover { filter: brightness(0.9); }

.btn-ghost { border-color: var(--border-strong); color: var(--fg); }
.btn-ghost:hover { background: var(--ink); color: var(--paper); border-color: var(--ink); }
[data-theme="dark"] .btn-ghost:hover { background: var(--ink); color: var(--paper); }

/* Tag / Chip */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 6px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-pill);
}
.tag--solid { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.tag--accent { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }

/* Section header */
.section-head {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--s-7);
  padding-block: var(--s-9) var(--s-7);
  border-top: 1px solid var(--border-strong);
}
@media (max-width: 760px) {
  .section-head { grid-template-columns: 1fr; gap: var(--s-4); padding-block: var(--s-7) var(--s-5); }
}

/* Marquee */
.marquee {
  overflow: hidden;
  white-space: nowrap;
  border-block: 1px solid var(--border-strong);
  padding-block: var(--s-5);
}
.marquee__track {
  display: inline-flex;
  gap: var(--s-7);
  animation: marquee 40s linear infinite;
  align-items: center;
}
@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}
.marquee__dot { width: 8px; height: 8px; border-radius: 999px; background: var(--accent); flex-shrink: 0; }

/* Cursor / Asterisk */
.aster { display: inline-block; color: var(--accent); animation: spin 8s linear infinite; transform-origin: center; }
@keyframes spin { to { transform: rotate(360deg); } }

/* Number labels */
.num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-muted);
  letter-spacing: 0.08em;
}

/* Cards (works) */
.work-card {
  display: block;
  position: relative;
  cursor: pointer;
  transition: opacity var(--d-base) var(--ease);
}
.work-card__media {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  background: var(--paper-2);
  overflow: hidden;
  border-radius: var(--r-1);
}
.work-card__media::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(0,0,0,0.35));
  opacity: 0;
  transition: opacity var(--d-base) var(--ease);
}
.work-card:hover .work-card__media::after { opacity: 1; }
.work-card__img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--d-slow) var(--ease); }
.work-card:hover .work-card__img { transform: scale(1.04); }
.work-card__meta { display: flex; justify-content: space-between; align-items: baseline; margin-top: var(--s-4); gap: var(--s-4); }
.work-card__title { font-family: var(--font-sans); font-weight: 500; font-size: 18px; letter-spacing: -0.01em; }
.work-card__client { font-family: var(--font-mono); font-size: 11px; text-transform: uppercase; color: var(--fg-muted); letter-spacing: 0.06em; }

/* Form */
.field {
  display: flex; flex-direction: column; gap: var(--s-2);
  padding-block: var(--s-4);
  border-bottom: 1px solid var(--border-strong);
}
.field label {
  font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 0.08em; text-transform: uppercase; color: var(--fg-muted);
}
.field input, .field textarea, .field select {
  width: 100%;
  background: transparent;
  border: 0;
  outline: 0;
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 18px;
  padding: 4px 0;
  resize: none;
}
.field input::placeholder, .field textarea::placeholder { color: var(--fg-muted); opacity: 0.6; }

/* Reveal animation */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 700ms var(--ease), transform 700ms var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }

/* Header */
.site-header {
  position: fixed; inset: 0 0 auto 0;
  z-index: 100;
  min-height: var(--header-h);
  display: flex; flex-direction: column;
  padding-top: env(safe-area-inset-top, 0px);
  padding-inline: max(var(--gutter), env(safe-area-inset-left, 0px)) max(var(--gutter), env(safe-area-inset-right, 0px));
  background: color-mix(in srgb, var(--paper) 80%, transparent);
  backdrop-filter: saturate(140%) blur(12px);
  -webkit-backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid var(--border);
}
.site-header__inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  width: 100%; min-height: var(--header-h);
  gap: var(--s-4);
  position: relative;
  z-index: 102;
}
.brand { grid-column: 1; justify-self: start; display: flex; align-items: center; gap: 12px; font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.04em; text-transform: uppercase; }
.site-header__actions {
  grid-column: 3;
  justify-self: end;
  display: flex; align-items: center; flex-shrink: 0;
  gap: var(--s-2);
}
.brand__logo { height: 16px; width: auto; flex-shrink: 0; }
[data-theme="dark"] .brand__logo { filter: invert(1); }
.brand__est { color: var(--fg-muted); }
@media (max-width: 760px) { .brand__est { display: none; } .brand__logo { height: 14px; } }

.nav {
  grid-column: 2;
  justify-self: center;
  display: flex;
  align-items: center;
  gap: var(--s-6);
}
.nav a { font-family: var(--font-sans); font-size: 14px; color: var(--fg); position: relative; padding-block: 4px; }
.nav a::after {
  content: ""; position: absolute; left: 0; bottom: -2px; height: 1px; width: 100%;
  background: var(--accent); transform: scaleX(0); transform-origin: left; transition: transform var(--d-base) var(--ease);
}
.nav a:hover::after, .nav a.is-active::after { transform: scaleX(1); }
.nav a.is-active { color: var(--fg); }

.nav-burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  border-radius: var(--r-2);
}
.nav-burger__line {
  display: block;
  width: 22px;
  height: 2px;
  border-radius: 1px;
  background: var(--fg);
  transition: transform var(--d-fast) var(--ease), opacity var(--d-fast) var(--ease);
}
.site-header.is-nav-open .nav-burger__line:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.site-header.is-nav-open .nav-burger__line:nth-child(2) { opacity: 0; }
.site-header.is-nav-open .nav-burger__line:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav-backdrop {
  display: none;
}

@media (max-width: 880px) {
  .site-header__inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  .nav-burger { display: inline-flex; }
  .site-header__inner .nav {
    display: none;
    position: fixed;
    top: calc(var(--header-h) + env(safe-area-inset-top, 0px));
    left: 0;
    right: 0;
    height: auto;
    max-height: min(420px, calc(100dvh - var(--header-h) - env(safe-area-inset-top, 0px) - env(safe-area-inset-bottom, 0px) - var(--s-5)));
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin: 0;
    padding: var(--s-4) max(var(--gutter), env(safe-area-inset-left, 0px)) var(--s-5) max(var(--gutter), env(safe-area-inset-right, 0px));
    background: var(--bg);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    z-index: 101;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border-strong);
    box-shadow: 0 16px 40px rgb(14 14 12 / 0.08);
  }
  [data-theme="dark"] .site-header__inner .nav {
    box-shadow: 0 16px 40px rgb(0 0 0 / 0.35);
  }
  .site-header.is-nav-open .nav {
    display: flex;
  }
  .site-header .nav a {
    min-height: 48px;
    padding: var(--s-3) 0;
    font-size: 18px;
    font-weight: 500;
    border-bottom: 1px solid var(--border);
    align-items: center;
    display: flex;
  }
  .site-header .nav a:last-child { border-bottom: 0; }
  .site-header .nav a::after { display: none; }

  .nav-backdrop {
    display: block;
    position: fixed;
    top: calc(var(--header-h) + env(safe-area-inset-top, 0px));
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 100;
    margin: 0;
    padding: 0;
    border: 0;
    cursor: pointer;
    background: rgb(14 14 12 / 0.4);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--d-base) var(--ease);
  }
  [data-theme="dark"] .nav-backdrop { background: rgb(0 0 0 / 0.55); }
  .site-header.is-nav-open .nav-backdrop {
    opacity: 1;
    pointer-events: auto;
  }
}

.theme-toggle {
  display: flex; align-items: center; gap: 6px;
  padding: 6px 10px;
  min-height: 44px;
  border: 1px solid var(--border-strong);
  border-radius: var(--r-pill);
  font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 0.05em; text-transform: uppercase;
}
@media (max-width: 480px) {
  .theme-toggle { padding-inline: 10px; }
  .theme-toggle__label { display: none; }
}

/* Footer */
.site-footer {
  background: var(--ink);
  color: var(--paper);
  padding-block: var(--s-9) var(--s-6);
  margin-top: var(--s-10);
}
[data-theme="dark"] .site-footer { background: var(--paper-2); color: var(--fg); }
.site-footer .container { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: var(--s-7); }
.site-footer h4 { font-family: var(--font-mono); font-size: 11px; text-transform: uppercase; letter-spacing: 0.08em; color: #888; margin: 0 0 var(--s-4); font-weight: 400; }
.site-footer ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: var(--s-3); }
.site-footer a:hover { color: var(--accent); }
.site-footer__bottom {
  margin-top: var(--s-8);
  padding-top: var(--s-5);
  border-top: 1px solid #ffffff20;
  display: flex; justify-content: space-between; align-items: center;
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.06em; text-transform: uppercase; color: #888;
}
@media (max-width: 760px) {
  .site-footer .container { grid-template-columns: 1fr 1fr; }
  .site-footer__bottom { flex-direction: column; gap: var(--s-3); align-items: flex-start; }
}
@media (max-width: 560px) {
  .site-footer .container { grid-template-columns: 1fr; }
}

/* 점검 페이지: 전체 높이 열 레이아웃 + 슬림 푸터 */
.site-shell--maintenance {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
}
.site-shell--maintenance__main {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: calc(var(--header-h) + var(--s-8)) var(--gutter) var(--s-8);
}
.site-footer--maintenance {
  flex-shrink: 0;
  margin-top: 0;
  padding-block: var(--s-5);
  background: var(--bg);
  color: var(--fg-muted);
  border-top: 1px solid var(--border);
}
[data-theme="dark"] .site-footer--maintenance {
  background: var(--bg);
  color: var(--fg-muted);
}
.site-footer--maintenance__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--s-3) var(--s-4);
  font-family: var(--font-mono);
  font-size: var(--t-micro);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.site-footer--maintenance a {
  color: var(--fg);
}
.site-footer--maintenance a:hover {
  color: var(--accent);
}
.site-footer--maintenance__sep {
  opacity: 0.35;
  user-select: none;
}
@media (max-width: 520px) {
  .site-footer--maintenance__sep { display: none; }
  .site-footer--maintenance__inner {
    flex-direction: column;
    text-align: center;
    gap: var(--s-2);
  }
}

.maintenance-hero {
  width: 100%;
  max-width: 520px;
  margin-inline: auto;
  display: grid;
  grid-template-columns: 3px 1fr;
  gap: 0 var(--s-6);
  align-items: start;
}
.maintenance-hero__accent {
  width: 3px;
  align-self: stretch;
  min-height: 120px;
  background: var(--accent);
  border-radius: var(--r-pill);
}
.maintenance-hero__body {
  padding-block: var(--s-1);
}
.maintenance-hero__label {
  margin: 0 0 var(--s-4);
  font-family: var(--font-mono);
  font-size: var(--t-meta);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-muted);
}
.maintenance-hero__title {
  margin: 0 0 var(--s-5);
  font-family: var(--font-display);
  font-size: var(--t-h2);
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--fg);
}
.maintenance-hero__lead {
  margin: 0;
  font-size: var(--t-body-l);
  line-height: 1.65;
  color: var(--fg-muted);
  max-width: 42ch;
}

/* Page padding to account for fixed header */
.page { padding-top: var(--header-h); min-height: 100vh; }

/* Tweaks panel safe-area */
.tweaks-fab { position: fixed; right: 20px; bottom: 20px; z-index: 90; }

/* Asterisk loader (page transitions feel) */
.page-mark {
  position: fixed; right: var(--gutter); top: calc(var(--header-h) + 20px);
  font-family: var(--font-mono); font-size: 11px; color: var(--fg-muted);
  z-index: 50; letter-spacing: 0.08em; text-transform: uppercase;
  pointer-events: none;
  display: flex; align-items: center; gap: 8px;
}

/* Utility — block link */
.block-link { display: block; }
.block-link:hover { color: var(--accent); }

/* Decorative bracket text */
.bracket::before { content: "[ "; color: var(--fg-muted); }
.bracket::after  { content: " ]"; color: var(--fg-muted); }