/* ==========================================================================
   PixelCraft Studio - shared stylesheet
   Used by every page (ko root pages + /en pages). Keep selectors generic so
   new tool pages can reuse them without extra CSS.
   ========================================================================== */

:root {
  --color-bg: #171423;
  --color-bg-soft: #201c33;
  --color-panel: #ffffff;
  --color-panel-border: #e6e1f5;
  --color-text: #24202f;
  --color-text-muted: #6b6580;
  --color-heading: #171423;
  --color-primary: #7c5cff;
  --color-primary-dark: #6142e0;
  --color-accent: #33d6b0;
  --color-header-bg: rgba(23, 20, 35, 0.92);
  --color-link: #ffffff;
  --radius-lg: 20px;
  --radius-md: 12px;
  --shadow-card: 0 20px 50px rgba(23, 16, 60, 0.25);
  --max-width: 1100px;
}

* {
  box-sizing: border-box;
}

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

body {
  font-family: "Pretendard", "Apple SD Gothic Neo", "Segoe UI", system-ui, -apple-system, sans-serif;
  color: var(--color-text);
  background: radial-gradient(circle at 20% 0%, #2c2450 0%, #171423 55%, #100e1c 100%);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

h1, h2, h3 {
  color: var(--color-heading);
  line-height: 1.3;
}

a {
  color: inherit;
}

img, svg {
  max-width: 100%;
}

/* ---- background decoration layer ------------------------------------- */

#bg-characters {
  position: fixed;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}

.bg-char {
  position: absolute;
  opacity: 0.16;
  filter: drop-shadow(0 8px 18px rgba(0, 0, 0, 0.35));
  animation: bg-float 7s ease-in-out infinite;
}

.bg-char svg {
  display: block;
  width: 100%;
  height: 100%;
}

.bg-char.pos-tl { top: 6%; left: 4%; width: 110px; animation-delay: 0s; }
.bg-char.pos-tr { top: 10%; right: 5%; width: 90px; animation-delay: 1.2s; }
.bg-char.pos-ml { top: 45%; left: 2%; width: 80px; animation-delay: 2.1s; }
.bg-char.pos-mr { top: 55%; right: 3%; width: 100px; animation-delay: 0.6s; }
.bg-char.pos-bl { bottom: 8%; left: 8%; width: 95px; animation-delay: 1.8s; }
.bg-char.pos-br { bottom: 5%; right: 7%; width: 115px; animation-delay: 0.9s; }

@keyframes bg-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-14px); }
}

@media (max-width: 900px) {
  #bg-characters { display: none; }
}

/* ---- header ------------------------------------------------------------ */

#site-header {
  position: relative;
  z-index: 2;
  background: var(--color-header-bg);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  gap: 20px;
  color: var(--color-link);
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 1.05rem;
  text-decoration: none;
  color: var(--color-link);
  white-space: nowrap;
}

.brand-mark {
  font-size: 1.2rem;
}

.site-nav {
  display: flex;
  gap: 4px;
  flex: 1;
  flex-wrap: wrap;
}

.nav-link {
  text-decoration: none;
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.92rem;
  padding: 8px 12px;
  border-radius: 999px;
  transition: background 0.15s, color 0.15s;
}

.nav-link:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}

.nav-link.active {
  background: var(--color-primary);
  color: #fff;
}

.lang-switch {
  text-decoration: none;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.75);
  border: 1px solid rgba(255, 255, 255, 0.3);
  padding: 6px 12px;
  border-radius: 999px;
  white-space: nowrap;
}

.lang-switch:hover {
  border-color: #fff;
  color: #fff;
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: #fff;
  border-radius: 8px;
  font-size: 1.1rem;
  padding: 4px 10px;
  cursor: pointer;
}

@media (max-width: 720px) {
  .nav-toggle { display: inline-flex; }
  .site-nav {
    display: none;
    flex-basis: 100%;
    order: 3;
    flex-direction: column;
    gap: 2px;
  }
  .site-nav.open { display: flex; }
}

/* ---- layout -------------------------------------------------------------- */

main {
  position: relative;
  z-index: 1;
  flex: 1;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 48px 24px 64px;
}

.page-intro {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 40px;
  color: #fff;
}

.page-intro h1 {
  color: #fff;
  font-size: clamp(1.7rem, 3.5vw, 2.4rem);
  margin-bottom: 12px;
}

.page-intro p {
  color: rgba(255, 255, 255, 0.75);
  font-size: 1.02rem;
  line-height: 1.7;
}

.card {
  background: var(--color-panel);
  border: 1px solid var(--color-panel-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: clamp(20px, 4vw, 40px);
  max-width: 760px;
  margin: 0 auto;
}

.content-section {
  max-width: 760px;
  margin: 56px auto 0;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: clamp(20px, 4vw, 36px);
  color: rgba(255, 255, 255, 0.85);
}

.content-section h2 {
  color: #fff;
  font-size: 1.3rem;
  margin-top: 0;
}

.content-section h2:not(:first-child) {
  margin-top: 32px;
}

.content-section p,
.content-section li {
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.78);
}

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-top: 16px;
  padding: 0;
  list-style: none;
}

.steps li {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
  padding: 16px;
}

.steps li strong {
  display: block;
  color: #fff;
  margin-bottom: 6px;
}

/* article-style pages (about / privacy) use a light card instead of dark section */
.doc-card {
  max-width: 760px;
  margin: 0 auto;
  background: var(--color-panel);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: clamp(24px, 5vw, 48px);
}

.doc-card h2 {
  font-size: 1.15rem;
  margin-top: 32px;
  margin-bottom: 8px;
}

.doc-card h2:first-of-type {
  margin-top: 0;
}

.doc-card p,
.doc-card li {
  color: var(--color-text-muted);
  line-height: 1.75;
}

/* ---- pixel icon gallery --------------------------------------------------- */

.pixel-gallery-controls {
  max-width: 900px;
  margin: 0 auto 20px;
}

.pixel-search-input {
  width: 100%;
  padding: 12px 16px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  font-size: 0.95rem;
}

.pixel-search-input::placeholder {
  color: rgba(255, 255, 255, 0.5);
}

.pixel-search-input:focus {
  outline: none;
  border-color: var(--color-primary);
  background: rgba(255, 255, 255, 0.12);
}

.pixel-gallery-empty {
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
  color: rgba(255, 255, 255, 0.7);
  padding: 40px 0;
}

.pixel-pagination {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  max-width: 900px;
  margin: 24px auto 0;
}

.page-btn {
  min-width: 38px;
  padding: 8px 12px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  background: rgba(255, 255, 255, 0.06);
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.88rem;
  cursor: pointer;
}

.page-btn:hover:not(:disabled) {
  border-color: var(--color-primary);
  color: #fff;
}

.page-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.page-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

.pixel-gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 16px;
  max-width: 900px;
  margin: 0 auto;
}

.pixel-card {
  background: var(--color-panel);
  border: 1px solid var(--color-panel-border);
  border-radius: var(--radius-md);
  padding: 16px;
  text-align: center;
  box-shadow: var(--shadow-card);
}

.pixel-card-art {
  width: 72px;
  height: 72px;
  margin: 0 auto 10px;
}

.pixel-card-art svg {
  width: 100%;
  height: 100%;
}

.pixel-card-name {
  margin: 0 0 10px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
}

.pixel-card .btn {
  width: 100%;
  padding: 8px 10px;
  font-size: 0.82rem;
}

/* ---- game-tool intro cards ------------------------------------------------ */

.tool-intro-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  max-width: 900px;
  margin: 0 auto;
}

.tool-intro-card {
  background: var(--color-panel);
  border: 1px solid var(--color-panel-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 24px;
}

.tool-intro-icon {
  width: 56px;
  height: 56px;
  margin-bottom: 14px;
}

.tool-intro-icon svg {
  width: 100%;
  height: 100%;
}

.tool-intro-card h3 {
  margin: 0 0 8px;
  font-size: 1.1rem;
  color: var(--color-heading);
}

.tool-intro-card p {
  color: var(--color-text-muted);
  line-height: 1.7;
  font-size: 0.92rem;
}

.tool-intro-card a.tool-link {
  display: inline-block;
  margin-top: 6px;
  color: var(--color-primary-dark);
  font-size: 0.88rem;
  font-weight: 600;
  text-decoration: none;
}

.tool-intro-card a.tool-link:hover {
  text-decoration: underline;
}

/* ---- tool widget --------------------------------------------------------- */

.drop-zone {
  border: 2px dashed var(--color-panel-border);
  border-radius: var(--radius-md);
  padding: 36px 20px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}

.drop-zone:hover,
.drop-zone.dragover {
  border-color: var(--color-primary);
  background: #f6f3ff;
}

.drop-zone p {
  margin: 6px 0 0;
  color: var(--color-text-muted);
  font-size: 0.92rem;
}

.drop-zone .drop-icon {
  font-size: 2rem;
}

.file-input-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  opacity: 0;
}

.tool-workspace {
  margin-top: 24px;
}

.tool-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  font-size: 0.88rem;
  color: var(--color-text-muted);
  margin-bottom: 18px;
}

.tool-meta strong {
  color: var(--color-text);
}

.preview-frame {
  background: repeating-conic-gradient(#f1eefc 0% 25%, #ffffff 0% 50%) 50% / 20px 20px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-panel-border);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  margin-bottom: 20px;
  min-height: 160px;
}

.preview-frame canvas {
  max-width: 100%;
  max-height: 360px;
  border-radius: 4px;
}

.field-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: flex-end;
  margin-bottom: 16px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.field label {
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

.field input[type="number"] {
  width: 110px;
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid var(--color-panel-border);
  font-size: 0.95rem;
}

.field-check {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--color-text);
}

.scale-buttons {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.chip-btn {
  border: 1px solid var(--color-panel-border);
  background: #fff;
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 0.85rem;
  cursor: pointer;
  color: var(--color-text);
}

.chip-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.action-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.btn {
  border: none;
  border-radius: 999px;
  padding: 11px 22px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}

.btn-primary:hover:not(:disabled) {
  background: var(--color-primary-dark);
}

.btn-secondary {
  background: #f0edfa;
  color: var(--color-primary-dark);
}

.btn-secondary:hover:not(:disabled) {
  background: #e5dffc;
}

.tool-status {
  margin-top: 12px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  min-height: 1.2em;
}

.tool-status.error {
  color: #d1435b;
}

/* ---- footer --------------------------------------------------------------- */

#site-footer {
  position: relative;
  z-index: 1;
  background: rgba(10, 8, 20, 0.6);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 28px 24px;
  text-align: center;
  color: rgba(255, 255, 255, 0.6);
}

.footer-brand {
  font-weight: 600;
  color: rgba(255, 255, 255, 0.85);
  margin: 0 0 10px;
}

.footer-nav {
  display: flex;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}

.footer-nav a {
  text-decoration: none;
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.75);
}

.footer-nav a:hover {
  color: #fff;
}

.footer-note {
  font-size: 0.78rem;
  margin: 0;
  color: rgba(255, 255, 255, 0.45);
}