@import url('https://fonts.googleapis.com/css2?family=Zen+Maru+Gothic:wght@500;700;900&family=Noto+Sans+JP:wght@400;500;600;700&family=JetBrains+Mono:wght@500;600&display=swap');

:root {
  --font-display: 'Zen Maru Gothic', 'Hiragino Maru Gothic ProN', sans-serif;
  --font-body: 'Noto Sans JP', 'Hiragino Sans', sans-serif;
  --font-mono: 'JetBrains Mono', 'SFMono-Regular', monospace;
  --ink: #0B1B36;
  --blue: #1E56C8;
  --blue-deep: #123A94;
  --blue-bright: #4C86F0;
  --paper: #F5F8FD;
  --card: #FFFFFF;
  --slate: #667085;
  --line: #D7E1F2;
  --success: #1F8A70;
  --material: #0B6E99;
  --material-bg: #E6F4F9;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body { font-family: var(--font-body); color: var(--ink); background: var(--paper); font-size: 16px; }
a { color: inherit; }
input:focus, button:focus, textarea:focus, select:focus { outline: 2px solid var(--blue); outline-offset: 1px; }
img { max-width: 100%; }

/* ---- brand ---- */
.brand-logo { height: 38px; width: auto; display: block; filter: drop-shadow(0 1px 2px rgba(0,0,0,.2)); }
.brand-logo.compact { height: 26px; }

/* ---- hero / login ---- */
.hero-wrap { position: relative; overflow: hidden; padding: 56px 24px 40px; background: linear-gradient(180deg, #EAF2FC 0%, #F5F8FD 100%); }
.hero-bg-wrap { position: absolute; inset: 0; z-index: 0; overflow: hidden; }
.hero-bg-layer { position: absolute; inset: 0; background-size: cover; background-position: center; opacity: 0; transition: opacity 1.6s ease; }
.hero-bg-layer.active { opacity: 1; }
.hero-bg-overlay { position: absolute; inset: 0; background: linear-gradient(115deg, rgba(255,255,255,.62) 0%, rgba(238,246,253,.72) 38%, rgba(222,237,251,.6) 68%, rgba(206,227,248,.42) 100%); }
.hero-grid { position: relative; z-index: 1; max-width: 1160px; margin: 0 auto; display: grid; grid-template-columns: 1.15fr .85fr; gap: 56px; align-items: start; }
.hero-headline { font-family: var(--font-display); font-weight: 900; font-size: 38px; line-height: 1.35; color: var(--ink); margin: 28px 0 16px; }
.hero-sub { font-size: 16.5px; color: #3E4C63; line-height: 1.85; max-width: 480px; margin: 0; }
.hero-stats { display: flex; align-items: center; gap: 22px; margin-top: 30px; }
.hero-stat-num { font-family: var(--font-mono); font-weight: 700; font-size: 24px; color: var(--blue); }
.hero-stat-label { font-size: 12.5px; color: var(--slate); margin-top: 2px; }
.hero-stat-divider { width: 1px; height: 32px; background: rgba(11,27,54,.14); }
.hero-right { position: sticky; top: 20px; }

.login-card { background: #fff; border-radius: 20px; padding: 34px 32px 28px; box-shadow: 0 2px 8px rgba(20,33,61,.06), 0 24px 48px -20px rgba(20,33,61,.22); border: 1px solid var(--line); max-width: 420px; }
.login-eyebrow { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 700; color: var(--blue); background: #EEF2FA; padding: 5px 11px; border-radius: 999px; margin-bottom: 12px; }
.login-title { font-family: var(--font-display); font-size: 23px; font-weight: 800; margin: 0 0 6px; }
.login-sub { font-size: 14px; color: var(--slate); margin: 0 0 4px; }
.field-label { display: block; font-size: 13px; font-weight: 700; color: #344054; margin: 16px 0 6px; }
.field-row { display: flex; align-items: center; gap: 10px; border: 1.5px solid var(--line); border-radius: 10px; padding: 12px 14px; background: var(--paper); }
.field-row input { border: none; outline: none; background: transparent; flex: 1; font-size: 15.5px; color: var(--ink); font-family: var(--font-body); }
.btn-submit { width: 100%; margin-top: 22px; background: var(--ink); color: #fff; border: none; border-radius: 10px; padding: 14px 0; font-size: 15.5px; font-weight: 700; cursor: pointer; font-family: var(--font-display); }
.login-error { color: #DC2626; font-size: 13px; margin-top: 12px; }
.login-hint { display: flex; gap: 9px; margin-top: 20px; padding: 12px 14px; background: #EEF2FA; border-radius: 10px; font-size: 13px; color: var(--blue-deep); line-height: 1.6; }

/* ---- portal ---- */
.portal-header { background: #fff; border-top: 5px solid var(--blue); border-bottom: 1px solid var(--line); }
.provider-strip { max-width: 960px; margin: 0 auto; padding: 10px 24px 0; display: flex; align-items: center; gap: 10px; }
.provider-strip-label { font-size: 11.5px; color: #98A2B3; font-family: var(--font-mono); }
.portal-header-inner { max-width: 960px; margin: 0 auto; padding: 16px 24px 18px; display: flex; justify-content: space-between; align-items: center; }
.company-badge { width: 44px; height: 44px; border-radius: 12px; color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 14px; font-family: var(--font-display); }
.company-name { font-weight: 800; font-size: 16.5px; font-family: var(--font-display); }
.company-sub { font-size: 12.5px; color: #98A2B3; margin-top: 2px; }
.btn-logout { display: inline-flex; align-items: center; gap: 7px; background: var(--paper); border: none; padding: 10px 16px; border-radius: 10px; font-size: 13.5px; cursor: pointer; color: #344054; font-weight: 600; text-decoration: none; }
.portal-body { max-width: 960px; margin: 0 auto; padding: 26px 24px 60px; }
.news-box { display: flex; gap: 12px; background: #EAF1FD; border: 1px solid #C7DAF5; padding: 14px 16px; border-radius: 12px; margin-bottom: 22px; font-size: 14px; color: var(--blue-deep); line-height: 1.6; }
.cat-tabs { display: flex; gap: 10px; flex-wrap: wrap; }
.cat-tab { position: relative; display: inline-flex; align-items: center; gap: 8px; background: #fff; border: 1px solid var(--line); padding: 11px 18px; border-radius: 12px; font-size: 14.5px; font-weight: 600; cursor: pointer; color: #475569; text-decoration: none; }
.cat-tab.active { font-weight: 800; border-color: var(--blue); color: var(--blue); }
.search-row { display: flex; align-items: center; gap: 10px; background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 11px 14px; margin-top: 18px; max-width: 340px; }
.search-row input { border: none; outline: none; flex: 1; font-size: 14.5px; font-family: var(--font-body); }

.pkg-card { background: #fff; border: 1px solid var(--line); border-radius: 14px; overflow: hidden; margin-bottom: 16px; }
.pkg-head { width: 100%; display: flex; align-items: center; gap: 12px; padding: 18px 20px; background: transparent; border: none; cursor: pointer; text-align: left; font-size: 15.5px; text-decoration: none; color: inherit; }
.pkg-name { font-weight: 700; }
.pkg-meta { margin-left: auto; font-size: 12.5px; color: #98A2B3; font-family: var(--font-mono); }
.pkg-body { padding: 4px 20px 18px 50px; border-top: 1px solid #EAF0FB; }
.course-name { font-size: 13.5px; font-weight: 700; color: #475569; margin-top: 14px; }
.lesson-row { display: flex; align-items: center; gap: 12px; background: var(--paper); border: 1px solid #E9EFF9; border-radius: 10px; padding: 10px 14px; font-size: 14.5px; cursor: pointer; width: 100%; margin-top: 8px; text-decoration: none; color: inherit; }
.lesson-play { width: 34px; height: 34px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; background: rgba(30,86,200,.1); color: var(--blue); }
.lesson-kai { font-size: 12px; color: #98A2B3; width: 48px; flex-shrink: 0; font-family: var(--font-mono); }
.lesson-title { flex: 1; font-weight: 500; }
.lesson-time { font-size: 12.5px; color: #98A2B3; font-family: var(--font-mono); }
.material-badge { display: inline-flex; align-items: center; gap: 4px; font-size: 11.5px; font-weight: 700; color: var(--material); background: var(--material-bg); border: 1px solid #C9E7F2; border-radius: 999px; padding: 3px 10px; }
.empty-state { text-align: center; color: #98A2B3; font-size: 14px; padding: 50px 0; }

/* video / lesson player page */
.player-wrap { max-width: 760px; margin: 0 auto; padding: 26px 24px 60px; }
.player-back { display: inline-flex; align-items: center; gap: 6px; color: var(--slate); text-decoration: none; font-size: 13px; font-weight: 600; margin-bottom: 16px; }
.player-box { border: 2px dashed var(--blue); border-radius: 14px; background: #fff; padding: 0; overflow: hidden; }
.player-box iframe { width: 100%; aspect-ratio: 16/9; border: none; display: block; }
.player-meta { padding: 18px 22px; }
.player-eyebrow { font-size: 12.5px; color: #98A2B3; margin-bottom: 3px; }
.player-title { font-weight: 800; font-size: 19px; font-family: var(--font-display); }
.material-row { display: flex; align-items: center; gap: 10px; margin-top: 18px; padding: 14px 16px; background: var(--material-bg); border-radius: 10px; }
.material-dl { margin-left: auto; font-size: 13px; font-weight: 700; color: var(--material); text-decoration: none; }

/* ---- admin ---- */
.admin-shell { display: flex; min-height: 100vh; }
.admin-nav { width: 232px; background: var(--ink); color: #E7E2D6; padding: 22px 14px; flex-shrink: 0; }
.admin-nav-brand { background: #1C2C4E; border-radius: 10px; padding: 10px 12px; margin-bottom: 14px; display: inline-block; }
.admin-nav-title { font-size: 12.5px; font-weight: 600; line-height: 1.5; margin-bottom: 20px; opacity: .6; }
.nav-item { display: flex; align-items: center; gap: 10px; width: 100%; background: transparent; border: none; color: #C9D2E3; padding: 11px 12px; border-radius: 10px; font-size: 14px; cursor: pointer; margin-bottom: 5px; text-align: left; font-weight: 500; text-decoration: none; }
.nav-item.active { background: #1F3157; color: #fff; font-weight: 700; }
.admin-main { flex: 1; padding: 28px 32px; background: #F3F6FC; }
.admin-head-row { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 20px; flex-wrap: wrap; gap: 12px; }
.admin-h2 { font-size: 20px; font-weight: 800; margin: 0; font-family: var(--font-display); }
.admin-hsub { font-size: 13.5px; color: var(--slate); margin-top: 6px; max-width: 520px; }

.table-wrap { background: #fff; border: 1px solid var(--line); border-radius: 14px; overflow: hidden; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th { text-align: left; padding: 13px 16px; background: var(--paper); color: var(--slate); font-weight: 700; font-size: 12.5px; border-bottom: 1px solid var(--line); }
td { padding: 13px 16px; border-bottom: 1px solid #EAF0FB; }
.code-chip { color: #fff; font-size: 11.5px; font-weight: 800; padding: 4px 10px; border-radius: 999px; font-family: var(--font-mono); }
.code-text { font-family: var(--font-mono); font-size: 13px; }
.link-btn { border: none; background: transparent; color: var(--blue); cursor: pointer; font-size: 13px; font-weight: 700; text-decoration: none; }

.btn-primary { display: inline-flex; align-items: center; gap: 8px; background: var(--ink); color: #fff; border: none; padding: 11px 18px; border-radius: 10px; font-size: 14px; font-weight: 700; cursor: pointer; font-family: var(--font-body); text-decoration: none; }
.btn-ghost { display: inline-flex; align-items: center; gap: 7px; background: #fff; border: 1px solid var(--line); padding: 10px 16px; border-radius: 10px; font-size: 13.5px; cursor: pointer; color: #475569; text-decoration: none; }
.btn-danger { background: #DC2626; color: #fff; border: none; padding: 9px 15px; border-radius: 10px; font-size: 13px; cursor: pointer; font-weight: 600; }
.btn-danger-ghost { display: inline-flex; align-items: center; gap: 7px; background: #fff; color: #DC2626; border: 1px solid #FECACA; padding: 10px 16px; border-radius: 10px; font-size: 13.5px; cursor: pointer; text-decoration: none; }

.back-link { display: inline-flex; align-items: center; gap: 7px; color: var(--slate); font-size: 13px; text-decoration: none; margin-bottom: 14px; font-weight: 600; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 4px; }
.form-input, .form-select, .form-textarea { width: 100%; border: 1.5px solid var(--line); border-radius: 10px; padding: 11px 13px; font-size: 14.5px; outline: none; font-family: var(--font-body); background: #fff; }
.form-textarea { min-height: 78px; resize: vertical; }
.pkg-assign-wrap { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 18px; margin-top: 8px; max-height: 420px; overflow-y: auto; }
.pkg-assign-cat { font-size: 13.5px; font-weight: 800; color: #344054; margin: 14px 0 8px; }
.pkg-check-row { display: flex; align-items: center; gap: 9px; font-size: 14px; padding: 7px 9px; border-radius: 8px; cursor: pointer; }
.pkg-check-row:hover { background: #EEF2FA; }
.form-actions { display: flex; align-items: center; gap: 16px; margin-top: 24px; flex-wrap: wrap; }
.alert-flash { padding: 12px 16px; border-radius: 10px; font-size: 13.5px; margin-bottom: 18px; }
.alert-flash.success { background: #E1F5EE; color: #085041; }
.alert-flash.error { background: #FCEBEB; color: #791F1F; }

@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-right { position: static; }
  .form-grid { grid-template-columns: 1fr; }
  .admin-shell { flex-direction: column; }
  .admin-nav { width: 100%; }
}