:root {
  --bg: #f5f6f8;
  --surface: #ffffff;
  --ink: #1a2233;
  --ink-soft: #5b6472;
  --line: #e3e6ec;
  --brand: #1e3a5f;
  --brand-2: #2f6690;
  --accent: #d98e04;
  --radius: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.5;
}

a { color: var(--brand-2); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Landing */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  background: linear-gradient(160deg, var(--brand) 0%, var(--brand-2) 100%);
  color: #fff;
  padding: 24px;
}
.hero .tag {
  letter-spacing: .12em;
  text-transform: uppercase;
  font-size: .78rem;
  opacity: .8;
  margin-bottom: 14px;
}
.hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  margin: 0 0 14px;
  max-width: 720px;
}
.hero p {
  max-width: 560px;
  opacity: .92;
  margin: 0 0 28px;
}
.btn {
  display: inline-block;
  background: var(--accent);
  color: #201400;
  font-weight: 600;
  padding: 12px 26px;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  font-size: 1rem;
}
.btn:hover { text-decoration: none; filter: brightness(1.05); }
.btn.secondary {
  background: rgba(255,255,255,.12);
  color: #fff;
  border: 1px solid rgba(255,255,255,.4);
}

/* Login */
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  padding: 24px;
}
.login-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 36px;
  width: 100%;
  max-width: 360px;
  box-shadow: 0 8px 30px rgba(20, 30, 50, .06);
}
.login-card h2 { margin-top: 0; }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: .85rem; color: var(--ink-soft); margin-bottom: 6px; }
.field input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 1rem;
}
.error-msg { color: #b3261e; font-size: .88rem; margin-bottom: 14px; }

/* App shell (panel) */
.app-shell { display: flex; min-height: 100vh; }
.sidebar {
  width: 250px;
  flex-shrink: 0;
  background: var(--brand);
  color: #fff;
  padding: 20px 14px;
}
.sidebar .brand { font-weight: 700; font-size: 1.05rem; margin: 6px 10px 22px; }
.sidebar .brand small { display: block; font-weight: 400; opacity: .7; font-size: .72rem; }
.sidebar nav a {
  display: flex;
  justify-content: space-between;
  color: rgba(255,255,255,.85);
  padding: 9px 10px;
  border-radius: 8px;
  font-size: .92rem;
  margin-bottom: 2px;
}
.sidebar nav a:hover, .sidebar nav a.active {
  background: rgba(255,255,255,.12);
  text-decoration: none;
  color: #fff;
}
.sidebar nav a .count { opacity: .6; font-size: .78rem; }
.sidebar form { margin-top: 20px; padding: 0 10px; }
.sidebar .logout-btn {
  width: 100%;
  background: transparent;
  border: 1px solid rgba(255,255,255,.3);
  color: #fff;
  padding: 8px;
  border-radius: 8px;
  cursor: pointer;
  font-size: .85rem;
}

.main { flex: 1; padding: 32px 40px; max-width: 980px; }
.main h1 { margin-top: 0; }
.crumbs { font-size: .85rem; color: var(--ink-soft); margin-bottom: 18px; }

.section-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 16px;
  margin-top: 24px;
}
.section-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  display: block;
}
.section-card:hover { border-color: var(--brand-2); text-decoration: none; }
.section-card .label { font-weight: 600; color: var(--ink); }
.section-card .count { color: var(--ink-soft); font-size: .85rem; margin-top: 4px; }

.file-list { list-style: none; padding: 0; margin: 20px 0; }
.file-list li {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px 16px;
  margin-bottom: 8px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.file-list .ext-tag {
  font-size: .7rem;
  text-transform: uppercase;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 2px 6px;
  margin-right: 10px;
  color: var(--ink-soft);
}
.file-list .meta { color: var(--ink-soft); font-size: .82rem; }
.empty-state { color: var(--ink-soft); padding: 30px 0; }

.doc-view {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px;
}
.doc-view h1, .doc-view h2, .doc-view h3 { color: var(--brand); }
.doc-view table { border-collapse: collapse; width: 100%; }
.doc-view th, .doc-view td { border: 1px solid var(--line); padding: 6px 10px; text-align: left; }
.doc-view code { background: var(--bg); padding: 1px 5px; border-radius: 4px; }
.doc-view pre { background: var(--bg); padding: 14px; border-radius: 8px; overflow-x: auto; }

.notice {
  background: #fff7e6;
  border: 1px solid #f0dca0;
  color: #6b4e00;
  border-radius: 8px;
  padding: 10px 14px;
  font-size: .85rem;
  margin-bottom: 20px;
}