/* ─── Fonts ─── */
@font-face {
  font-family: "SCDream";
  src: url("fonts/SCDream1.otf");
  font-weight: 100;
}
@font-face {
  font-family: "SCDream";
  src: url("fonts/SCDream2.otf");
  font-weight: 200;
}
@font-face {
  font-family: "SCDream";
  src: url("fonts/SCDream3.otf");
  font-weight: 300;
}
@font-face {
  font-family: "SCDream";
  src: url("fonts/SCDream4.otf");
  font-weight: 400;
}
@font-face {
  font-family: "SCDream";
  src: url("fonts/SCDream5.otf");
  font-weight: 500;
}
@font-face {
  font-family: "SCDream";
  src: url("fonts/SCDream6.otf");
  font-weight: 600;
}
@font-face {
  font-family: "SCDream";
  src: url("fonts/SCDream7.otf");
  font-weight: 700;
}
@font-face {
  font-family: "SCDream";
  src: url("fonts/SCDream8.otf");
  font-weight: 800;
}
@font-face {
  font-family: "SCDream";
  src: url("fonts/SCDream9.otf");
  font-weight: 900;
}

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

/* ─── Variables ─── */
:root {
  --bg: #fafafa;

  --c-intro-card: #ffccdf;
  --c-intro-tab: #ffa4c6;
  --c-about-card: #fa8243;
  --c-about-tab: #f77530;
  --c-projects-card: #c1e6ff;
  --c-projects-tab: #9dd8ff;
  --c-contact-card: #eae7e0;
  --c-contact-tab: #e8ddc3;

  --ct: #1a1a1a;
  --ct-2: rgba(26, 26, 26, 0.52);
  --ct-border: rgba(26, 26, 26, 0.13);

  --radius: 16px;
  --tab-h: 52px;
}

/* ─── Base ─── */
body {
  background: linear-gradient(145deg, #f5f3f0 0%, #ede9e6 100%);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: "SCDream", system-ui, sans-serif;
  overflow: hidden;
  color: var(--ct);
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)' opacity='0.055'/%3E%3C/svg%3E");
  background-size: 300px 300px;
}

/* ─── Scene ─── */
.scene {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ─── File wrapper ─── */
.file-wrapper {
  position: relative;
  width: min(1080px, 92vw);
  padding-top: var(--tab-h);
}

/* ═══════════════════════════════
   INDEX TABS
═══════════════════════════════ */
.index-tabs {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: var(--tab-h);
  display: flex;
  align-items: flex-end;
  gap: 5px;
  padding: 0 0 0 20px;
  z-index: 5;
}

.idx-tab {
  padding: 9px 32px 13px;
  border-radius: 10px 10px 0 0;
  border: none;
  cursor: pointer;
  font-family: "SCDream", system-ui, sans-serif;
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: rgba(26, 26, 26, 0.55);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  transform: translateY(0);
  transition:
    transform 0.22s ease,
    background 0.22s ease,
    color 0.22s,
    opacity 0.22s;
  line-height: 1;
  min-width: 80px;
  opacity: 0.55;
}
.idx-tab:hover:not(.active) {
  transform: translateY(0);
  opacity: 1;
}
.idx-tab.active {
  transform: translateY(0);
  color: rgba(26, 26, 26, 0.88);
  opacity: 1;
  box-shadow: 0 -4px 14px rgba(0, 0, 0, 0.1);
}

.idx-tab[data-target="intro"] {
  background: var(--c-intro-tab);
}
.idx-tab[data-target="about"] {
  background: var(--c-about-tab);
}
.idx-tab[data-target="projects"] {
  background: var(--c-projects-tab);
}
.idx-tab[data-target="contact"] {
  background: var(--c-contact-tab);
}

.tab-num {
  font-size: 9px;
  opacity: 0.55;
  letter-spacing: 0.06em;
}
.tab-txt {
  font-size: 11px;
  letter-spacing: 0.14em;
}

/* ═══════════════════════════════
   CARD
═══════════════════════════════ */
.card {
  position: relative;
  display: flex;
  flex-direction: column;
  height: min(700px, 88vh);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow:
    0 32px 80px rgba(0, 0, 0, 0.16),
    0 8px 24px rgba(0, 0, 0, 0.08);
}

.card.section-intro {
  background: var(--c-intro-card);
}
.card.section-about {
  background: var(--c-about-card);
}
.card.section-projects {
  background: var(--c-projects-card);
}
.card.section-contact {
  background: var(--c-contact-card);
}
.card.section-outro {
  background: var(--c-contact-card);
}

/* ─── Meta strip ─── */
.card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 11px 32px;
  border-bottom: 1px solid rgba(26, 26, 26, 0.1);
  flex-shrink: 0;
}
.card-year,
.card-handle {
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(26, 26, 26, 0.4);
}

/* ═══════════════════════════════
   CARD PAGES
═══════════════════════════════ */
.card-pages {
  flex: 1;
  position: relative;
  overflow: hidden;
  cursor: pointer;
  perspective: 1000px;
}

.page {
  position: absolute;
  inset: 0;
  padding: 36px 44px 28px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 22px;
  opacity: 1;
  z-index: 1;
  backface-visibility: hidden;
  scrollbar-width: thin;
  scrollbar-color: rgba(0, 0, 0, 0.15) transparent;
}
.page.hidden {
  opacity: 0;
  pointer-events: none;
}

#page-intro {
  background: var(--c-intro-card);
}
#page-outro {
  background: var(--c-contact-card);
}
.outro-hero {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}
.outro-text {
  font-family: "SCDream", sans-serif;
  font-size: clamp(36px, 6vw, 64px);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--ct);
}

#page-about,
#page-projects,
#page-contact {
  inset: 14px;
  border-radius: 12px;
  background: #ffffff;
  box-shadow: 0 4px 32px rgba(0, 0, 0, 0.1);
}
.page.entering {
  animation: pageIn 0.35s ease forwards;
}

/* ─── 00 인트로 프레임 ─── */
.intro-frame {
  position: absolute;
  inset: 30px;
  border: 1px solid rgba(26, 26, 26, 0.12);
  border-radius: 3px;
  pointer-events: none;
  z-index: 0;
}
.corner {
  position: absolute;
  width: 18px;
  height: 18px;
}
.corner.tl {
  top: -1px;
  left: -1px;
  border-top: 2px solid rgba(26, 26, 26, 0.38);
  border-left: 2px solid rgba(26, 26, 26, 0.38);
}
.corner.tr {
  top: -1px;
  right: -1px;
  border-top: 2px solid rgba(26, 26, 26, 0.38);
  border-right: 2px solid rgba(26, 26, 26, 0.38);
}
.corner.bl {
  bottom: -1px;
  left: -1px;
  border-bottom: 2px solid rgba(26, 26, 26, 0.38);
  border-left: 2px solid rgba(26, 26, 26, 0.38);
}
.corner.br {
  bottom: -1px;
  right: -1px;
  border-bottom: 2px solid rgba(26, 26, 26, 0.38);
  border-right: 2px solid rgba(26, 26, 26, 0.38);
}

/* ─── 00 인트로 ─── */
.intro-hero {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  z-index: 1;
  align-items: center;
  text-align: center;
}
.intro-label {
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(26, 26, 26, 0.45);
  margin-bottom: 28px;
}
.intro-name {
  font-family: "SCDream", sans-serif;
  font-size: clamp(64px, 10vw, 100px);
  font-weight: 600;
  color: var(--ct);
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: 14px;
}
.intro-sub {
  font-family: "SCDream", sans-serif;
  font-size: 15px;
  letter-spacing: 0.45em;
  text-transform: uppercase;
  color: rgba(26, 26, 26, 0.45);
  margin-bottom: 44px;
}
.intro-cue {
  font-family: "SCDream", sans-serif;
  font-size: 13px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(26, 26, 26, 0.38);
  animation: blink 0.5s ease-in-out infinite;
}

/* ─── 소개 레이아웃 ─── */
.about-top {
  display: flex;
  gap: 28px;
  align-items: flex-start;
  flex-shrink: 0;
}

.profile-img {
  width: 110px;
  height: 150px;
  border-radius: 12px;
  object-fit: cover;
  object-position: center top;
  flex-shrink: 0;
}

/* ─── 01~03 hero heading ─── */
.page-hero {
  flex-shrink: 0;
  flex: 1;
}
.page-hero h2 {
  font-family: "SCDream", sans-serif;
  font-size: clamp(34px, 5vw, 52px);
  font-weight: 600;
  line-height: 1.1;
  color: var(--ct);
  letter-spacing: -0.03em;
  margin-bottom: 14px;
}
.page-hero p {
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--ct-2);
  max-width: 440px;
}

/* ─── Skills ─── */
.skills-area {
  flex-shrink: 0;
}
.skills-heading {
  font-family: "SCDream", sans-serif;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ct);
  padding-bottom: 8px;
  border-bottom: 1px solid var(--ct-border);
  margin-bottom: 12px;
}
.skill-rows {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.skill-row {
  display: flex;
  align-items: center;
  gap: 14px;
}
.sr-label {
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ct-2);
  width: 70px;
  flex-shrink: 0;
}
.sr-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
}
.sr-tags span {
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  font-weight: 500;
  padding: 5px 14px;
  border-radius: 999px;
  color: #1a1a1a;
  letter-spacing: 0.04em;
}

/* Language — 핑크 */
.skill-row:nth-child(1) .sr-tags span {
  background: #ffccdf;
}
/* Framework — 하늘 */
.skill-row:nth-child(2) .sr-tags span {
  background: #c1e6ff;
}
/* Tools — 아이보리 */
.skill-row:nth-child(3) .sr-tags span {
  background: #e8ddc3;
}

/* ─── About 자격/학력 ─── */
.about-section {
  flex-shrink: 0;
}
.about-table {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.about-row {
  display: flex;
  align-items: baseline;
  gap: 12px;
  font-size: 13px;
  color: var(--ct);
}
.about-date {
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  color: var(--ct-2);
  flex-shrink: 0;
  min-width: 130px;
}
.about-name {
  font-size: 13px;
  font-weight: 500;
  flex-shrink: 0;
}
.about-org {
  font-size: 12px;
  color: var(--ct-2);
}

/* ─── Projects ─── */
.projects-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.project {
  display: flex;
  gap: 18px;
  padding: 16px 18px;
  border: 1px solid rgba(26, 26, 26, 0.08);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(4px);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
  transition:
    background 0.2s,
    box-shadow 0.2s,
    transform 0.2s;
}
.project:hover {
  background: rgba(255, 255, 255, 0.85);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.1);
  transform: translateY(-2px);
}
.proj-thumb {
  width: 160px;
  flex-shrink: 0;
  border-radius: 8px;
  overflow: hidden;
  background: rgba(0, 0, 0, 0.06);
  border: 1px solid rgba(0, 0, 0, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100px;
}
.proj-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.proj-thumb-placeholder {
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  color: rgba(0, 0, 0, 0.25);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.proj-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 7px;
}
.proj-hd {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 7px;
}
.proj-hd h3 {
  font-family: "SCDream", sans-serif;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.proj-links {
  display: flex;
  gap: 8px;
}
.proj-links a {
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  font-weight: 500;
  color: var(--ct);
  text-decoration: none;
  padding: 4px 12px;
  border-radius: 999px;
  border: 1px solid rgba(26, 26, 26, 0.25);
  background: transparent;
  transition:
    background 0.15s,
    border-color 0.15s;
}
.proj-links a:hover {
  background: rgba(26, 26, 26, 0.08);
  border-color: rgba(26, 26, 26, 0.45);
}
.proj-body > p {
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--ct-2);
  margin-bottom: 9px;
}
.proj-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
}
.proj-stack span {
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  padding: 2px 8px;
  border-radius: 3px;
  background: rgba(0, 0, 0, 0.1);
  color: rgba(26, 26, 26, 0.65);
  border: 1px solid rgba(0, 0, 0, 0.08);
}

.proj-feedback {
  border-top: 1px solid var(--ct-border);
  padding-top: 8px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.feedback-label {
  font-family: "SCDream", sans-serif;
  font-size: 13px;
  font-weight: 700;
  color: var(--ct);
}
.proj-feedback ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.proj-feedback li {
  font-size: 11px;
  line-height: 1.6;
  color: var(--ct-2);
  padding-left: 10px;
  position: relative;
}
.proj-feedback li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--ct-border);
}

/* ─── Contact ─── */
.contact-nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.contact-row {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  border: 1px solid rgba(26, 26, 26, 0.08);
  border-radius: 12px;
  text-decoration: none;
  color: var(--ct);
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(4px);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
  transition: all 0.22s;
}
.contact-row:hover {
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.09);
  transform: translateY(-2px);
}
.cr-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(0, 0, 0, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  overflow: hidden;
}
.cr-icon-img {
  width: 22px;
  height: 22px;
  object-fit: contain;
}
.cr-label {
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ct-2);
  width: 56px;
}
.cr-val {
  flex: 1;
  font-size: 13px;
}
.cr-arrow {
  color: var(--ct-2);
  font-size: 14px;
  transition: transform 0.2s;
}
.contact-row:hover .cr-arrow {
  transform: translateX(4px);
}

/* ═══════════════════════════════
   ANIMATIONS
═══════════════════════════════ */

/* 앞으로: opacity 없이 순수 회전 — 배경 불투명 유지하다가 -90deg에서 자연히 사라짐 */
@keyframes foldOut {
  from {
    transform: rotateX(0deg);
  }
  to {
    transform: rotateX(90deg);
  }
}
@keyframes foldIn {
  from {
    transform: rotateX(88deg);
    opacity: 0;
  }
  to {
    transform: rotateX(0deg);
    opacity: 1;
  }
}

/* 뒤로: 이전 페이지가 위에서 아래로 회전하며 내려와 덮음 */
@keyframes foldCover {
  from {
    transform: rotateX(90deg);
  }
  to {
    transform: rotateX(0deg);
  }
}

.card-pages[data-dir="forward"] .page.exiting {
  transform-origin: top center;
  animation: foldOut 0.38s ease-in forwards;
  pointer-events: none;
}
.card-pages[data-dir="backward"] .page.entering {
  transform-origin: top center;
  animation: foldCover 0.38s ease-out forwards;
  z-index: 3;
}

@keyframes blink {
  0%,
  100% {
    opacity: 0.38;
  }
  50% {
    opacity: 0.75;
  }
}

/* ═══════════════════════════════
   RESPONSIVE
═══════════════════════════════ */
@media (max-width: 600px) {
  /* ── Layout ── */
  body {
    min-height: 100dvh;
    align-items: flex-start;
  }
  .scene {
    height: 100dvh;
    align-items: flex-start;
    padding: 0;
  }
  .file-wrapper {
    width: 100vw;
    margin: 0;
  }
  .card {
    height: calc(100dvh - var(--tab-h));
    border-radius: 0;
  }

  /* ── Tabs: 4개를 균등 분할 ── */
  .index-tabs {
    padding: 0 4px 0 4px;
    gap: 3px;
  }
  .idx-tab {
    flex: 1;
    min-width: 0;
    padding: 8px 6px 12px;
  }
  .tab-txt {
    font-size: 9px;
    letter-spacing: 0.08em;
  }
  .tab-num {
    font-size: 8px;
  }

  /* ── Pages ── */
  .page {
    padding: 18px 16px 16px;
    gap: 14px;
  }
  #page-about,
  #page-projects,
  #page-contact {
    inset: 7px;
  }

  /* ── Intro ── */
  .intro-frame {
    inset: 14px;
  }
  .intro-name {
    font-size: clamp(48px, 14vw, 72px);
  }
  .intro-cue {
    display: none;
  }

  /* ── About: 프로필 이미지 + 텍스트 세로 쌓기 ── */
  .about-top {
    flex-direction: column;
    gap: 14px;
  }
  .profile-img {
    width: 80px;
    height: 110px;
  }
  .page-hero h2 {
    font-size: 24px;
    margin-bottom: 8px;
  }
  .page-hero p {
    font-size: 12.5px;
    max-width: 100%;
  }
  .skills-heading {
    font-size: 14px;
  }

  /* ── Skills: label + tags 세로 쌓기 ── */
  .skill-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 5px;
  }
  .sr-label {
    width: auto;
  }

  /* ── About 학력/자격 ── */
  .about-date {
    min-width: 0;
    font-size: 9px;
  }
  .about-row {
    flex-wrap: wrap;
    gap: 4px 8px;
  }

  /* ── Projects: 썸네일 → 내용 세로 쌓기 ── */
  .project {
    flex-direction: column;
    padding: 12px 12px;
    gap: 10px;
  }
  .proj-thumb {
    width: 100%;
    height: 150px;
    min-height: 0;
  }
  .proj-img {
    object-position: center top;
  }
  .proj-hd {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    margin-bottom: 4px;
  }
  .proj-hd h3 {
    font-size: 14px;
  }
  .proj-body > p {
    font-size: 12px;
    line-height: 1.6;
  }

  /* ── Contact ── */
  .contact-row {
    padding: 12px 14px;
    gap: 10px;
  }
  .cr-val {
    font-size: 11.5px;
    word-break: break-all;
  }
}