/* ---------- 공용 핀 (system head / contact) ---------- */

.card-pin {
  position: sticky;
  top: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-inline: var(--space-edge);
}

/* ---------- classified ---------- */

.classified-badge {
  display: inline-block;
  margin-left: 0.5rem;
  padding: 0.12rem 0.5rem;
  border: 1px solid color-mix(in srgb, var(--accent-alert) 55%, transparent);
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.22em;
  color: var(--accent-alert);
  vertical-align: 0.35em;
}

.redact {
  color: transparent;
  background: repeating-linear-gradient(
    100deg,
    rgba(120, 130, 160, 0.4) 0 10px,
    rgba(120, 130, 160, 0.26) 10px 20px
  );
  border-radius: 3px;
  user-select: none;
}

/* ---------- contact (컷13 · 교신) ---------- */

.contact-pin {
  justify-content: flex-start;
  align-items: center;
}

.contact-inner {
  max-width: 560px;
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 1s ease, transform 1s var(--ease-out-expo);
}

.is-visible .contact-inner {
  opacity: 1;
  transform: translateY(0);
}

.contact-big {
  font-family: var(--font-display);
  font-size: var(--text-copy);
  font-weight: 500;
  line-height: 1.22;
  letter-spacing: -0.02em;
  margin: 0 0 1.1rem;
  text-shadow: 0 2px 28px rgba(3, 5, 12, 0.85);
}

.contact-line {
  margin: 0 0 1.8rem;
  font-size: var(--text-lead);
  color: var(--color-muted);
  text-shadow: 0 2px 20px rgba(3, 5, 12, 0.8);
}

.contact-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  padding: 1rem 1.6rem;
  border: 1px solid var(--glass-line);
  border-radius: var(--radius-pill);
  background: var(--glass-bg);
  color: var(--color-ink);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.06em;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: border-color var(--duration-normal) ease, color var(--duration-normal) ease;
}

.contact-btn::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--accent-ice);
  border-radius: inherit;
  transform: translateY(101%);
  transition: transform var(--duration-slow) var(--ease-out-expo);
}

.contact-btn:hover::before,
.contact-btn:focus-visible::before { transform: translateY(0); }

.contact-btn:hover,
.contact-btn:focus-visible {
  color: var(--color-bg);
  border-color: var(--accent-ice);
}

.contact-btn > * { position: relative; }

.contact-btn-arrow {
  font-size: 1.1em;
  transition: transform var(--duration-normal) var(--ease-out-expo);
}

.contact-btn:hover .contact-btn-arrow { transform: translate(3px, -3px); }

.contact-btn:focus-visible {
  outline: 1px solid var(--accent-ice);
  outline-offset: 4px;
}

.contact-fine {
  margin: 3rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.26em;
  color: var(--color-faint);
}

/* ---------- project panels (docking dialogs) ---------- */

.scrim {
  position: fixed;
  inset: 0;
  z-index: 25;
  background: radial-gradient(ellipse at 35% 50%, transparent 20%, rgba(10, 14, 30, 0.4) 100%);
  opacity: 0;
  transition: opacity var(--duration-slow) ease;
}

.scrim.is-visible { opacity: 1; }

/* hidden 상태에서 투명 패널이 우측을 덮어 휠 스크롤을 삼키는 것 방지 */
.panel[hidden] { display: none; }

.panel {
  position: fixed;
  inset-block: 0;
  right: 0;
  z-index: 30;
  display: grid;
  align-items: center;
  justify-items: end;
  padding: var(--space-edge);
  width: min(560px, 100%);
  pointer-events: none;
  --accent: var(--accent-ice);
}

.panel[data-accent="teal"] { --accent: var(--accent-teal); }
.panel[data-accent="violet"] { --accent: var(--accent-violet); }
.panel[data-accent="ice"] { --accent: var(--accent-ice); }
.panel[data-accent="alert"] { --accent: var(--accent-alert); }
.panel[data-accent="gold"] { --accent: var(--accent-gold); }

.panel-card {
  pointer-events: auto;
  width: 100%;
  max-height: min(78vh, 640px);
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: clamp(1.4rem, 3vw, 2.2rem);
  border-radius: var(--radius-panel);
  background: var(--glass-bg);
  border: 1px solid var(--glass-line);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(26px) saturate(1.25);
  -webkit-backdrop-filter: blur(26px) saturate(1.25);
  opacity: 0;
  transform: translateX(36px);
  filter: blur(6px);
  transition:
    opacity var(--duration-slow) ease,
    transform var(--duration-slow) var(--ease-out-expo),
    filter var(--duration-slow) ease;
}

.panel.is-open .panel-card {
  opacity: 1;
  transform: translateX(0);
  filter: blur(0);
}

.panel-head {
  position: relative;
  margin-bottom: 1.2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-line);
}

.panel-index {
  margin: 0 0 0.4rem;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--accent);
}

.panel-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: var(--text-panel-title);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.panel-close {
  position: absolute;
  top: -0.4rem;
  right: -0.4rem;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 1px solid var(--color-line);
  border-radius: 50%;
  background: transparent;
  color: var(--color-muted);
  font-size: 1.3rem;
  line-height: 1;
  cursor: pointer;
  transition:
    color var(--duration-fast) ease,
    border-color var(--duration-fast) ease,
    transform var(--duration-normal) var(--ease-out-expo);
}

.panel-close:hover,
.panel-close:focus-visible {
  color: var(--color-ink);
  border-color: var(--accent);
  transform: rotate(90deg);
}

.panel-close:focus-visible {
  outline: 1px solid var(--accent);
  outline-offset: 3px;
}

/* 3단 서사: 겪던 문제 → 만든 것 → 달라진 점 */

.panel-story {
  margin: 0;
  display: grid;
  gap: 1.05rem;
}

.story-step {
  padding-left: 0.95rem;
  border-left: 2px solid color-mix(in srgb, var(--accent) 45%, transparent);
}

.story-step dt {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.2em;
  color: var(--accent);
  margin-bottom: 0.25rem;
}

.story-step dd {
  margin: 0;
  font-size: var(--text-base);
  color: var(--color-ink);
  line-height: 1.55;
}

/* 구현 기능 목록 */
.feat-list {
  margin: 0.1rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.45rem;
}

.feat-list li {
  position: relative;
  padding-left: 1rem;
  font-size: var(--text-sm);
  color: var(--color-muted);
  line-height: 1.5;
}

.feat-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
}

/* 사용 도구 칩 */
.tech-chips {
  list-style: none;
  margin: 1.4rem 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.42rem;
}

.tech-chips li {
  padding: 0.3rem 0.72rem;
  border: 1px solid color-mix(in srgb, var(--accent) 30%, var(--glass-line));
  border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--accent) 8%, transparent);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.04em;
  color: var(--color-ink);
  white-space: nowrap;
}

.panel-demo {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1.4rem;
  padding: 0.55rem 1.1rem;
  border: 1px solid color-mix(in srgb, var(--accent) 55%, transparent);
  border-radius: var(--radius-pill);
  color: var(--accent);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  transition: background-color var(--duration-fast) ease, color var(--duration-fast) ease;
}

.panel-demo:hover,
.panel-demo:focus-visible {
  background: color-mix(in srgb, var(--accent) 16%, transparent);
  color: var(--color-ink);
}

.panel-note {
  margin: 1.4rem 0 0;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--color-faint);
}

/* ---------- mobile ---------- */

@media (max-width: 720px) {
  .contact-pin { justify-content: center; }
  .contact-inner { text-align: center; }

  .panel {
    inset: auto 0 0 0;
    width: 100%;
    align-items: end;
    padding: 0.6rem;
  }

  .panel-card {
    max-height: 70vh;
    border-radius: 18px 18px 12px 12px;
    transform: translateY(40px);
  }

  .panel.is-open .panel-card { transform: translateY(0); }
}