lite_hackathon.css

:root {
  --bg: #0c0f13; /* 배경 */
  --panel: #12161d; /* 카드/사이드바 */
  --line: #e7e7ec; /* 기본 선/글자 */
  --muted: #a2a8b4; /* 보조 텍스트 */
  --accent: #6ea8ff; /* 포인트 파랑 */
  --accent2: #9b7bff; /* 보조 포인트 보라 */
  --border: rgba(231, 231, 236, 0.22);
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.45), 0 6px 16px rgba(0, 0, 0, 0.35);
  --radius: 16px;
}

* {
  box-sizing: border-box;
}
html,
body {
  height: 100%;
}

/* ✨ 배경 애니메이션 추가 
  - background-position을 천천히 이동시켜 별이 흐르는 효과
*/
@keyframes moveBackground {
  0% {
    background-position: 0 0, 100px 150px, -50px -50px;
  }
  100% {
    background-position: -50px 50px, 80px 180px, -80px -20px;
  }
}

body {
  margin: 0;
  color: var(--line);
  background-color: var(--bg);

  /* 불규칙한 별 배경 레이어 */
  background-image: radial-gradient(
      circle at center,
      rgba(255, 255, 255, 0.8) 0.5px,
      transparent 1px
    ),
    radial-gradient(
      circle at center,
      rgba(255, 255, 255, 1) 1px,
      rgba(255, 255, 255, 0.2) 2px,
      transparent 3px
    ),
    radial-gradient(
      circle at center,
      rgba(255, 255, 255, 1) 1.5px,
      rgba(255, 255, 255, 0.3) 4px,
      transparent 5px
    );

  background-size: 300px 300px, 450px 450px, 600px 600px;
  background-position: 0 0, 100px 150px, -50px -50px;

  /* 60초 동안 천천히 움직이며 흐르는 느낌 구현 */
  animation: moveBackground 60s linear infinite alternate;

  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto,
    'Noto Sans KR', Helvetica, Arial;

  transition: background-color 0.6s ease, color 0.6s ease;
  overflow-x: hidden; /* 가로 스크롤 방지 */
}

/* 공통 아이콘 버튼 */
.icon-btn {
  background: transparent;
  color: var(--line);
  border: 1.5px solid var(--border);
  border-radius: 12px;
  width: 42px;
  height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: border-color 0.15s ease, transform 0.05s ease;
}
.icon-btn:active {
  transform: translateY(1px);
}
.icon-btn.circle {
  border-radius: 50%;
}
.icon-btn.sm {
  width: 32px;
  height: 32px;
  border-radius: 10px;
}
.icon-btn:hover {
  border-color: #fff;
}

/* 헤더 */
.header {
  position: fixed;
  inset: 0 0 auto 0;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 0 16px;
  z-index: 60;
  backdrop-filter: saturate(180%) blur(6px);
  border-bottom: 1px solid var(--border);
}
.header #openSidebar {
  position: absolute;
  left: 10px;
}
.header #loginBtn {
  position: absolute;
  right: 10px;
}
.logo {
  font-weight: 800;
  letter-spacing: 0.6rem;
  text-transform: uppercase;
  font-size: 22px;
  color: #eef1f7;
}

/* 메인 컨테이너 */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 100px 20px 80px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* 검색창 */
.search {
  width: min(760px, 92%);
  position: relative;
  top: -18px;
  margin: 36px auto 28px;
  padding: 16px 18px;
  gap: 12px;
  display: flex;
  align-items: center;
  border-radius: 999px;
  border: 2px solid var(--line);
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.06),
    rgba(255, 255, 255, 0.03)
  );
  box-shadow: var(--shadow);
}
.search-icon {
  opacity: 0.95;
}
.search input {
  flex: 1;
  font-size: 18px;
  padding: 6px 4px;
  color: var(--line);
  background: transparent;
  border: none;
  outline: none;
}

/* 위젯 묶음/플러스 */
.stack {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  flex-wrap: wrap;
  justify-content: center;
}

/* 위젯 그리드 */
.widget-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
}
.widget {
  width: 300px;
  background: var(--panel);
  border: 1.5px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: transform 0.18s ease;
}
.widget:hover {
  transform: translateY(-3px);
}
.widget-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  border-bottom: 1.5px solid var(--line);
}
.widget-header h3 {
  margin: 0;
  font-size: 16px;
}
.widget-body {
  padding: 12px;
}

/* 시간표 */
.timetable .cells {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 6px;
}
.timetable .cells div {
  aspect-ratio: 1/1;
  border: 1.5px solid var(--line);
  border-radius: 10px;
  background: transparent;
}

/* 급식 */
.lunch-list {
  margin: 0;
  padding-left: 18px;
  color: var(--line);
}
.lunch-list li {
  margin: 6px 0;
}

/* 플러스 버튼 */
.fab {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  box-shadow: var(--shadow);
  transition: transform 0.15s ease, filter 0.15s ease;
}
.fab:hover {
  transform: scale(1.08);
  filter: saturate(1.1);
}

/* 사이드바 */
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
  z-index: 70;
}
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: 320px;
  max-width: 88vw;
  background: var(--panel);
  border-right: 1.5px solid var(--line);
  transform: translateX(-100%);
  transition: transform 0.25s ease;
  z-index: 80;
  display: flex;
  flex-direction: column;
}
.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  border-bottom: 1.5px solid var(--line);
}
.sidebar-menu {
  padding: 8px 0;
  overflow: auto;
}
.menu-item {
  display: block;
  padding: 12px 16px;
  text-decoration: none;
  color: var(--line);
  border-left: 3px solid transparent;
}
.menu-item:hover {
  background: rgba(255, 255, 255, 0.06);
  border-left-color: #fff;
}
.sidebar-footer {
  margin-top: auto;
  padding: 12px 16px;
  border-top: 1.5px solid var(--line);
  color: var(--muted);
}

/* 모달 */
.modal {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  background: rgba(0, 0, 0, 0.5);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
  z-index: 90;
}
.modal-card {
  width: min(560px, 92vw);
  background: var(--panel);
  color: var(--line);
  border: 1.5px solid var(--line);
  border-radius: 14px;
  box-shadow: var(--shadow);
  overflow: hidden;
}
.modal-header,
.modal-footer {
  padding: 14px 16px;
  border-bottom: 1.5px solid var(--line);
}
.modal-footer {
  border-top: 1.5px solid var(--line);
  border-bottom: none;
}
.modal-body {
  padding: 16px;
}
.widget-picker {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}
.picker-item {
  padding: 12px;
  border: 1.5px dashed var(--line);
  border-radius: 12px;
  color: var(--line);
  background: transparent;
  cursor: pointer;
}
.picker-item:hover {
  background: rgba(255, 255, 255, 0.06);
}

/* 열린 상태 */
.is-open .overlay {
  opacity: 1;
  pointer-events: auto;
}
.is-open #sidebar {
  transform: translateX(0);
}
.is-modal .modal {
  opacity: 1;
  pointer-events: auto;
}

/* 반응형 */
@media (max-width: 800px) {
  .widget {
    width: 92%;
  }
  .fab {
    margin: 10px auto;
  }
}
.widget-hint {
  font-size: 14px;
  color: #fff;
  margin-left: 10px;
  align-self: center;
  display: none;
  opacity: 0.85;
  transition: opacity 0.3s ease;
}

/* 🌞 라이트모드 전용 스타일 확장 */
body.light-mode {
  background-color: #f9f9f9;
  color: #222;
  background-image: none; /* 별 배경 제거 */
  animation: none; /* 배경 흐름 제거 */
}

/* 🌞 라이트모드에서 별똥별 숨김 */
body.light-mode .star-container {
  display: none;
}

/* ... (라이트모드 기타 스타일들 기존과 동일) ... */
body.light-mode .widget {
  background-color: #ffffff;
  border: 1.5px solid #ccc;
  color: #222;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}
body.light-mode .widget table,
body.light-mode .widget td,
body.light-mode .widget th {
  border-color: #ccc;
}
body.light-mode .search-box input {
  background: #fff;
  color: #222;
  border: 1px solid #ccc;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}
body.light-mode .logo {
  color: #222 !important;
}
body.light-mode .menu-toggle {
  color: #222 !important;
  border-color: #ccc;
}
body.light-mode .menu-toggle:hover {
  background-color: rgba(0, 0, 0, 0.05);
}
body.light-mode .login-btn {
  color: #222 !important;
  border-color: #ccc;
}
body.light-mode .login-btn:hover {
  background-color: rgba(0, 0, 0, 0.05);
}
body.light-mode .sidebar {
  background-color: #fff;
  color: #111;
  border-right: 1px solid #ddd;
}
.theme-toggle {
  position: fixed;
  left: 20px;
  bottom: 20px;
  width: 55px;
  height: 55px;
  border-radius: 50%;
  background-color: transparent;
  border: 2px solid rgba(255, 255, 255, 0.3);
  color: #ffcc66;
  font-size: 24px;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
  transform: scale(1);
}
.theme-toggle:hover {
  background-color: rgba(255, 255, 255, 0.1);
  transform: scale(1.1);
  box-shadow: 0 6px 20px rgba(255, 220, 100, 0.5);
}
.theme-toggle:active {
  transform: scale(0.95);
  box-shadow: 0 3px 8px rgba(255, 220, 100, 0.3);
}
body.light-mode .theme-toggle {
  color: #222;
  border-color: #222;
  background-color: transparent;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}
body.light-mode .theme-toggle:hover {
  background-color: rgba(0, 0, 0, 0.05);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.2);
}
body.light-mode a {
  color: #0077cc;
}
body {
  transition: background-color 0.6s ease, color 0.6s ease;
}
.widget,
header,
.search-box input,
.menu-toggle,
.login-btn,
.theme-toggle {
  transition: background-color 0.6s ease, color 0.6s ease,
    border-color 0.6s ease, box-shadow 0.6s ease, transform 0.3s ease;
}
body.light-mode .header {
  border-bottom: 1.5px solid #000;
}
body.light-mode #openSidebar svg path {
  stroke: #000 !important;
}
body.light-mode #loginBtn svg path {
  stroke: #000 !important;
}
body.light-mode .widget {
  border: 1.5px solid #000;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
}
body.light-mode .search {
  border: 2px solid #000;
  background: #fff;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}
body.light-mode .search-icon svg path,
body.light-mode .search-icon svg circle {
  stroke: #000;
}
body.light-mode .logo {
  color: #000 !important;
}
body.light-mode .sidebar {
  border-right: 1.5px solid #000;
}
body.light-mode .menu-item:hover {
  background: rgba(0, 0, 0, 0.05);
  border-left-color: #000;
}
body.light-mode .fab {
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.25);
}
body.light-mode .modal-card {
  background: #ffffff;
  color: #111;
  border: 1.5px solid #ccc;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
}
body.light-mode .modal-header,
body.light-mode .modal-footer {
  border-color: #ccc;
}
body.light-mode #closeModal svg path {
  stroke: #000;
}
body.light-mode .picker-item {
  border: 1.5px dashed #444;
  color: #111;
  background: #f9f9f9;
}
body.light-mode .picker-item:hover {
  background: rgba(0, 0, 0, 0.05);
}
body.light-mode .modal-footer small {
  color: #333;
}
.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
#closeModal {
  margin-left: auto;
}
#todayLunch li:first-child {
  font-weight: bold;
  color: #333;
  margin-bottom: 6px;
}

/* ========================================= */
/* 🌠 별똥별(Shooting Star) 애니메이션 스타일 */
/* ========================================= */

.star-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none; /* 클릭 방해하지 않음 */
  z-index: 0;
  overflow: hidden;
}

.shooting-star {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 4px;
  height: 4px;
  background: #fff;
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.1),
    0 0 0 8px rgba(255, 255, 255, 0.1), 0 0 20px rgba(255, 255, 255, 1);
  animation: shoot 3s linear infinite;
  opacity: 0;
}

/* 별똥별 꼬리 */
.shooting-star::before {
  content: '';
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 300px;
  height: 1px;
  background: linear-gradient(90deg, #fff, transparent);
}

/* 별똥별 애니메이션 키프레임 */
@keyframes shoot {
  0% {
    transform: rotate(315deg) translateX(0);
    opacity: 1;
  }
  70% {
    opacity: 1;
  }
  100% {
    transform: rotate(315deg) translateX(-1000px);
    opacity: 0;
  }
}

/* 각 별똥별마다 위치와 시간차를 다르게 설정하여 자연스럽게 만듦 */
.shooting-star:nth-child(1) {
  top: 0;
  left: 50%; /* 가운데 위에서 시작 */
  animation-delay: 0s;
  animation-duration: 4s;
}

.shooting-star:nth-child(2) {
  top: 20%;
  left: 80%; /* 오른쪽 위에서 시작 */
  animation-delay: 2s;
  animation-duration: 8s;
}

.shooting-star:nth-child(3) {
  top: 60%;
  left: 100%; /* 오른쪽 아래에서 시작 */
  animation-delay: 5s;
  animation-duration: 10s;
}