/* css/style.css */

/* =====================
   CSS Variables
   ===================== */
:root {
  --color-primary:     #4F6BED;
  --color-primary-dk:  #3A52C7;
  --color-primary-lt:  #EEF1FD;
  --color-accent:      #F97316;
  --color-success:     #22C55E;
  --color-danger:      #EF4444;
  --color-warning:     #FACC15;
  --color-line:        #06C755;

  --color-bg:          #F4F6FB;
  --color-sidebar-bg:  #1E2340;
  --color-sidebar-txt: #A9B0CC;
  --color-header-bg:   #FFFFFF;
  --color-border:      #E2E8F0;
  --color-text:        #1E293B;
  --color-text-muted:  #64748B;
  --color-white:       #FFFFFF;

  --header-height:     56px;
  --sidebar-width:     240px;
  --sidebar-collapsed: 60px;

  --radius-sm:  6px;
  --radius-md:  10px;
  --radius-lg:  16px;

  --shadow-sm:  0 1px 3px rgba(0,0,0,.08);
  --shadow-md:  0 4px 12px rgba(0,0,0,.10);
  --shadow-lg:  0 8px 24px rgba(0,0,0,.14);

  --transition: 0.24s ease;
}

/* =====================
   Reset & Base
   ===================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 14px; }
body {
  font-family: 'Hiragino Kaku Gothic ProN', 'Noto Sans JP', 'Meiryo', sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  min-height: 100vh;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* =====================
   Header（ハンバーガー＋右ユーザーのみ）
   ===================== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-height);
  background: var(--color-header-bg);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  z-index: 1000;
  box-shadow: var(--shadow-sm);
}

.header-left { display: flex; align-items: center; height: 100%; }

/* ハンバーガー */
.menu-toggle {
  width: var(--sidebar-width);
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-sidebar-txt);
  font-size: 1.1rem;
  background: var(--color-sidebar-bg);
  transition: background var(--transition), width var(--transition), color var(--transition);
  flex-shrink: 0;
  border-right: none;
}
.menu-toggle:hover { background: #262d50; color: var(--color-white); }
body.sidebar-collapsed .menu-toggle { width: var(--sidebar-collapsed); }

/* ヘッダー右 */
.header-right {
  position: relative;
  display: flex;
  align-items: center;
  gap: 4px;
  padding-right: 16px;
}
.header-school-name {
  font-size: .82rem;
  font-weight: 600;
  color: var(--color-text-muted);
  padding: 0 4px 0 12px;
  white-space: nowrap;
}
.header-divider {
  width: 1px;
  height: 18px;
  background: var(--color-border);
  margin: 0 4px;
  flex-shrink: 0;
}
.user-info {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background var(--transition);
}
.user-info:hover { background: var(--color-primary-lt); }
.user-name { font-size: .88rem; font-weight: 600; color: var(--color-text); }
.user-menu-btn { font-size: .72rem; color: var(--color-text-muted); padding: 2px; }

.user-dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 6px); right: 16px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  min-width: 170px;
  z-index: 2000;
  overflow: hidden;
}
.user-dropdown.open { display: block; }
.user-dropdown ul { padding: 6px 0; }
.user-dropdown li a {
  display: flex; align-items: center; gap: 8px;
  padding: 9px 16px; font-size: .88rem; color: var(--color-text);
  transition: background var(--transition);
}
.user-dropdown li a:hover { background: var(--color-primary-lt); }
.user-dropdown li a.logout { color: var(--color-danger); }
.user-dropdown li.divider { height: 1px; background: var(--color-border); margin: 4px 0; }

/* =====================
   Layout Wrapper
   ===================== */
.layout-wrapper {
  display: flex;
  padding-top: var(--header-height);
  min-height: 100vh;
}

/* =====================
   Sidebar
   ===================== */
.sidebar {
  position: fixed;
  top: var(--header-height);
  left: 0; bottom: 0;
  width: var(--sidebar-width);
  background: var(--color-sidebar-bg);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: width var(--transition);
  z-index: 900;
}
body.sidebar-collapsed .sidebar { width: var(--sidebar-collapsed); }

/* ロゴ（サイドバー上部） */
.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 18px 16px 14px;
  border-bottom: 1px solid rgba(255,255,255,.07);
  overflow: hidden;
  white-space: nowrap;
  flex-shrink: 0;
}
.sidebar-logo-icon {
  width: 32px; height: 32px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dk));
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  color: var(--color-white);
  font-size: .95rem;
  flex-shrink: 0;
}
.sidebar-logo-text {
  overflow: hidden;
  transition: opacity var(--transition), width var(--transition);
}
.sidebar-brand {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-white);
  letter-spacing: .06em;
}
body.sidebar-collapsed .sidebar-logo-text { opacity: 0; width: 0; }

/* メニューリスト */
.sidebar-inner { flex: 1; overflow-y: auto; overflow-x: hidden; padding: 12px 0; }
.sidebar-inner::-webkit-scrollbar { width: 3px; }
.sidebar-inner::-webkit-scrollbar-thumb { background: rgba(255,255,255,.12); border-radius: 2px; }

.menu-list { padding: 0 10px; }
.menu-item { margin-bottom: 2px; position: relative; }

.menu-link {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 12px; border-radius: var(--radius-sm);
  color: var(--color-sidebar-txt); font-size: 1.1rem; font-weight: 500;
  transition: background var(--transition), color var(--transition);
  white-space: nowrap; overflow: hidden; cursor: pointer;
}
.menu-link:hover { background: rgba(255,255,255,.08); color: var(--color-white); }
.menu-item.active .menu-link { background: var(--color-primary); color: var(--color-white); }

.menu-icon { width: 20px; text-align: center; font-size: 1rem; flex-shrink: 0; }
.menu-label { transition: opacity var(--transition); }
body.sidebar-collapsed .menu-label { opacity: 0; width: 0; overflow: hidden; }

/* 折りたたみ時ツールチップ */
body.sidebar-collapsed .menu-link::after {
  content: attr(data-label);
  position: absolute;
  left: calc(var(--sidebar-collapsed) + 8px);
  top: 50%; transform: translateY(-50%);
  background: #111828;
  color: var(--color-white);
  padding: 5px 10px; border-radius: var(--radius-sm);
  font-size: .82rem; white-space: nowrap;
  opacity: 0; pointer-events: none;
  transition: opacity .15s;
  box-shadow: var(--shadow-md);
  z-index: 1100;
}
body.sidebar-collapsed .menu-link:hover::after { opacity: 1; }

/* サイドバー下部 */
.sidebar-footer {
  padding: 12px 16px;
  border-top: 1px solid rgba(255,255,255,.07);
  transition: opacity var(--transition);
  overflow: hidden;
  white-space: nowrap;
}
.sidebar-version { font-size: .7rem; color: rgba(255,255,255,.22); }
body.sidebar-collapsed .sidebar-footer { opacity: 0; }

/* =====================
   Main Content
   ===================== */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  transition: margin-left var(--transition);
  min-height: calc(100vh - var(--header-height));
  display: flex;
  flex-direction: column;
}
body.sidebar-collapsed .main-content { margin-left: var(--sidebar-collapsed); }


.content-inner {
  padding: 26px 28px;
  max-width: 1200px;
  flex: 1;
}

/* =====================
   Page title
   ===================== */
.page-title {
  font-size: 1.35rem; font-weight: 700; color: var(--color-text);
  margin-bottom: 4px; display: flex; align-items: center; gap: 10px;
}
.page-title i { color: var(--color-primary); font-size: 1.15rem; }
.page-subtitle { font-size: .83rem; color: var(--color-text-muted); margin-bottom: 22px; }

/* =====================
   Card
   ===================== */
.card {
  background: var(--color-white); border-radius: var(--radius-lg);
  padding: 22px 24px; box-shadow: var(--shadow-sm); border: 1px solid var(--color-border);
}
.card + .card { margin-top: 18px; }

/* =====================
   Stats Grid
   ===================== */
.stats-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 14px; margin-bottom: 22px;
}
.stat-card {
  background: var(--color-white); border-radius: var(--radius-lg);
  padding: 20px; border: 1px solid var(--color-border); box-shadow: var(--shadow-sm);
  display: flex; align-items: center; gap: 14px;
}
.stat-icon {
  width: 44px; height: 44px; border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.15rem; flex-shrink: 0;
}
.stat-icon.blue   { background: #EEF1FD; color: var(--color-primary); }
.stat-icon.green  { background: #ECFDF5; color: var(--color-success); }
.stat-icon.orange { background: #FFF7ED; color: var(--color-accent); }
.stat-icon.red    { background: #FEF2F2; color: var(--color-danger); }
.stat-num { font-size: 1.65rem; font-weight: 700; line-height: 1; color: var(--color-text); }
.stat-label { font-size: .76rem; color: var(--color-text-muted); margin-top: 3px; }

/* =====================
   Placeholder
   ===================== */
.placeholder-box {
  border: 2px dashed var(--color-border); border-radius: var(--radius-lg);
  padding: 48px; text-align: center; color: var(--color-text-muted);
}
.placeholder-box i { font-size: 2.4rem; margin-bottom: 12px; display: block; color: var(--color-border); }
.placeholder-box p { font-size: .93rem; }

/* =====================
   Login Page
   ===================== */
body.login-page {
  background: #EEF2F8;
  display: flex; align-items: center; justify-content: center;
  min-height: 100vh;
}
.login-wrap {
  width: 100%;
  max-width: 460px;
  padding: 20px;
}
.login-card {
  background: var(--color-white);
  border-radius: 20px;
  padding: 44px 40px 38px;
  box-shadow: 0 6px 32px rgba(0,0,0,.10);
  text-align: center;
}
.login-logo-wrap {
  margin-bottom: 18px;
}
.login-logo-circle {
  width: 72px; height: 72px;
  background: linear-gradient(135deg, #1B3B7D, #2E5BA8);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 14px;
  font-size: 1.9rem;
  color: var(--color-white);
}
.login-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: .04em;
}
.login-section-label {
  display: flex; align-items: center; gap: 10px;
  font-size: .78rem; color: var(--color-text-muted);
  margin: 22px 0 14px;
}
.login-section-label::before,
.login-section-label::after {
  content: ''; flex: 1; height: 1px; background: var(--color-border);
}
.btn-line {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  width: 100%; padding: 13px 20px;
  background: var(--color-line);
  color: var(--color-white);
  border-radius: var(--radius-md);
  font-size: 1rem; font-weight: 700;
  cursor: pointer; border: none;
  transition: background var(--transition), box-shadow var(--transition);
  letter-spacing: .04em;
}
.btn-line:hover { background: #05a849; box-shadow: 0 4px 14px rgba(6,199,85,.35); }
.btn-line i { font-size: 1.2rem; }

.btn-register {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  width: 100%; padding: 13px 20px;
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: var(--radius-md);
  font-size: 1rem; font-weight: 700;
  cursor: pointer; border: none;
  transition: background var(--transition), box-shadow var(--transition);
  letter-spacing: .04em;
}
.btn-register:hover { background: var(--color-primary-dk); box-shadow: 0 4px 14px rgba(79,107,237,.35); }
.btn-register i { font-size: 1.1rem; }

.login-note {
  margin-top: 14px;
  font-size: .76rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* =====================
   Responsive
   ===================== */
@media (max-width: 768px) {
  .sidebar { width: var(--sidebar-collapsed); }
  .sidebar-logo-text { opacity: 0; width: 0; }
  .menu-label { opacity: 0; width: 0; overflow: hidden; }
  .menu-toggle { width: var(--sidebar-collapsed); }
  .main-content { margin-left: var(--sidebar-collapsed); }
  .content-inner { padding: 16px; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .school-bar { padding: 9px 16px; }
}