/*
 * 이 파일은 PlayDooz 메인 페이지의 색상, 배치, 반응형 화면을 담당합니다.
 * index.html의 <link rel="stylesheet" href="./css/main.css">로 연결됩니다.
 */

:root {
  color-scheme: light;
  --color-background: #f6f7fb;
  --color-surface: #ffffff;
  --color-text: #181a20;
  --color-muted: #666b78;
  --color-line: #e4e7ee;
  --color-primary: #635bff;
  --color-primary-dark: #4b44d5;
  --color-header: rgb(255 255 255 / 90%);
  --color-header-line: rgb(228 231 238 / 80%);
  --color-navigation: #3f4350;
  --color-separator: #a3a7b1;
  --color-category: #555a67;
  --color-active-background: #181a20;
  --color-active-text: #ffffff;
  --color-empty-line: #cdd1da;
  --color-about-background: #1d2030;
  --color-about-text: #c9ccd5;
  --max-width: 1120px;
  --shadow-card: 0 16px 40px rgb(27 31 44 / 8%);
}

/* html의 data-theme 값은 js/theme.js가 저장된 사용자 선택에 따라 변경합니다. */
:root[data-theme="dark"] {
  color-scheme: dark;
  --color-background: #11131a;
  --color-surface: #1b1e27;
  --color-text: #f4f6fb;
  --color-muted: #aeb3c0;
  --color-line: #303543;
  --color-primary: #9a94ff;
  --color-primary-dark: #837cff;
  --color-header: rgb(17 19 26 / 90%);
  --color-header-line: rgb(48 53 67 / 85%);
  --color-navigation: #d9dce5;
  --color-separator: #7c8290;
  --color-category: #c3c7d1;
  --color-active-background: #6f67f2;
  --color-active-text: #ffffff;
  --color-empty-line: #4b5160;
  --color-about-background: #090b10;
  --color-about-text: #c9ccd5;
  --shadow-card: 0 16px 42px rgb(0 0 0 / 28%);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--color-text);
  background: var(--color-background);
  font-family: "Pretendard", "Noto Sans KR", Arial, sans-serif;
  line-height: 1.6;
}

button, a { font: inherit; }
a { color: inherit; text-decoration: none; }

button:focus-visible,
a:focus-visible {
  outline: 3px solid rgb(99 91 255 / 35%);
  outline-offset: 3px;
}

.site-header {
  position: sticky;
  z-index: 10;
  top: 0;
  border-bottom: 1px solid var(--color-header-line);
  background: var(--color-header);
  backdrop-filter: blur(14px);
}

.header-inner {
  display: flex;
  align-items: center;
  max-width: var(--max-width);
  min-height: 72px;
  margin: 0 auto;
  padding: 0 24px;
}

.logo, .footer-logo {
  font-size: 1.15rem;
  font-weight: 900;
  letter-spacing: 0.08em;
}

.main-nav {
  display: flex;
  gap: 32px;
  margin-left: 64px;
  color: var(--color-navigation);
  font-weight: 700;
}

.main-nav a:hover { color: var(--color-primary); }

.language-switcher {
  display: flex;
  align-items: center;
  gap: 7px;
  margin-left: auto;
  color: var(--color-separator);
  white-space: nowrap;
}

.language-button {
  padding: 5px 2px;
  border: 0;
  color: var(--color-muted);
  background: transparent;
  cursor: pointer;
  font-size: 0.88rem;
  font-weight: 700;
}

.language-button.is-active { color: var(--color-primary); }

.hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 56px;
  max-width: var(--max-width);
  min-height: 590px;
  margin: 0 auto;
  padding: 80px 24px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--color-primary);
  font-size: 0.76rem;
  font-weight: 900;
  letter-spacing: 0.15em;
}

.hero h1 {
  max-width: 660px;
  margin: 0;
  font-size: clamp(2.6rem, 6vw, 4.9rem);
  line-height: 1.08;
  letter-spacing: -0.055em;
}

.hero-description {
  max-width: 590px;
  margin: 28px 0 34px;
  color: var(--color-muted);
  font-size: 1.12rem;
}

.primary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 24px;
  border-radius: 14px;
  color: white;
  background: var(--color-primary);
  font-weight: 800;
  transition: background 160ms ease, transform 160ms ease;
}

.primary-button:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
}

.hero-visual {
  position: relative;
  min-height: 380px;
  overflow: hidden;
  border: 1px solid rgb(255 255 255 / 60%);
  border-radius: 36px;
  background: linear-gradient(145deg, #e6e4ff 0%, #eef8ff 52%, #fff0dd 100%);
  box-shadow: var(--shadow-card);
}

.shape { position: absolute; display: block; }

.shape-square {
  top: 55px;
  left: 52px;
  width: 124px;
  height: 124px;
  border-radius: 28px;
  background: #635bff;
  transform: rotate(12deg);
}

.shape-circle {
  right: 42px;
  bottom: 54px;
  width: 180px;
  height: 180px;
  border: 28px solid #ffb45a;
  border-radius: 50%;
}

.shape-triangle {
  top: 82px;
  right: 58px;
  width: 0;
  height: 0;
  border-right: 58px solid transparent;
  border-bottom: 105px solid #5cd6b3;
  border-left: 58px solid transparent;
  transform: rotate(18deg);
}

.shape-dot {
  bottom: 76px;
  left: 92px;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: #ff6f91;
}

.section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 100px 24px;
}

.games-section, .about-section { scroll-margin-top: 40px; }
.section-heading { max-width: 650px; }

.section-heading h2,
.about-card h2 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.1rem);
  line-height: 1.2;
  letter-spacing: -0.04em;
}

.section-heading > p:last-child {
  margin: 18px 0 0;
  color: var(--color-muted);
}

.category-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 38px 0 30px;
}

.category-button {
  min-width: 68px;
  padding: 9px 17px;
  border: 1px solid var(--color-line);
  border-radius: 999px;
  color: var(--color-category);
  background: var(--color-surface);
  cursor: pointer;
  font-weight: 750;
}

.category-button:hover,
.category-button.is-active {
  border-color: var(--color-active-background);
  color: var(--color-active-text);
  background: var(--color-active-background);
}

.game-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.game-card {
  display: block;
  overflow: hidden;
  border: 1px solid var(--color-line);
  border-radius: 22px;
  background: var(--color-surface);
  box-shadow: 0 8px 24px rgb(27 31 44 / 4%);
  transition: box-shadow 180ms ease, transform 180ms ease;
}

.game-card:focus-visible {
  outline: 3px solid rgb(99 91 255 / 35%);
  outline-offset: 4px;
}

.game-card:hover {
  box-shadow: var(--shadow-card);
  transform: translateY(-5px);
}

.game-thumbnail {
  display: grid;
  min-height: 180px;
  place-items: center;
  background: var(--card-color, #e7e5ff);
}

.game-symbol {
  display: grid;
  width: 80px;
  height: 80px;
  border: 2px solid rgb(255 255 255 / 70%);
  border-radius: 25px;
  color: rgb(24 26 32 / 78%);
  background: rgb(255 255 255 / 58%);
  box-shadow: 0 10px 28px rgb(25 27 38 / 10%);
  font-size: 2rem;
  font-weight: 900;
  place-items: center;
}

.game-card-content { padding: 22px; }

.game-category {
  display: inline-block;
  margin-bottom: 8px;
  color: var(--color-primary);
  font-size: 0.78rem;
  font-weight: 850;
}

.game-card h3 { margin: 0; font-size: 1.24rem; }

.game-card p {
  margin: 9px 0 0;
  color: var(--color-muted);
  font-size: 0.94rem;
}

.empty-message {
  padding: 60px 24px;
  border: 1px dashed var(--color-empty-line);
  border-radius: 20px;
  color: var(--color-muted);
  text-align: center;
}

.about-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 70px;
  align-items: center;
  padding: 62px;
  border-radius: 30px;
  color: white;
  background: var(--color-about-background);
}

.about-card .eyebrow { color: #aaa5ff; }

.about-card > p {
  margin: 0;
  color: var(--color-about-text);
  font-size: 1.06rem;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  max-width: var(--max-width);
  margin: 20px auto 0;
  padding: 38px 24px;
  border-top: 1px solid var(--color-line);
  color: var(--color-muted);
  font-size: 0.86rem;
}

.footer-logo { color: var(--color-text); }

.theme-toggle {
  position: fixed;
  z-index: 20;
  right: 22px;
  bottom: 22px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 15px;
  border: 1px solid var(--color-line);
  border-radius: 999px;
  color: var(--color-text);
  background: var(--color-surface);
  box-shadow: var(--shadow-card);
  cursor: pointer;
  font-size: 0.86rem;
  font-weight: 800;
}

.theme-toggle:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.theme-toggle-icon {
  font-size: 1.05rem;
  line-height: 1;
}

@media (max-width: 820px) {
  .hero { grid-template-columns: 1fr; min-height: auto; }
  .hero-visual { min-height: 300px; }
  .game-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .about-card { grid-template-columns: 1fr; gap: 28px; }
}

@media (max-width: 560px) {
  .header-inner { min-height: 64px; padding: 0 16px; }
  .logo { font-size: 1rem; }
  .main-nav { gap: 14px; margin-left: 20px; font-size: 0.9rem; }
  .language-switcher { gap: 4px; }
  .language-button { font-size: 0.76rem; }
  .hero, .section { padding-right: 18px; padding-left: 18px; }
  .hero { gap: 42px; padding-top: 62px; padding-bottom: 62px; }
  .hero-visual { min-height: 250px; }
  .shape-square { top: 42px; left: 34px; width: 90px; height: 90px; }
  .shape-circle { right: 26px; bottom: 34px; width: 130px; height: 130px; border-width: 22px; }
  .shape-triangle { top: 45px; right: 30px; border-right-width: 40px; border-bottom-width: 75px; border-left-width: 40px; }
  .game-grid { grid-template-columns: 1fr; }
  .about-card { padding: 38px 28px; }
  .site-footer { align-items: flex-start; flex-direction: column; padding-right: 18px; padding-left: 18px; }
  .theme-toggle { right: 14px; bottom: 14px; min-height: 42px; padding: 0 13px; }
}