/* ============================================================
   Shipment Intelligence Dashboard - Global Styles
   Design: sharp corners (no border-radius), English UI
   All theme values centralized in CSS variables
   ============================================================ */

:root {
  /* Color palette */
  --bg: #f4f5f7;
  --surface: #ffffff;
  --border: #d9dce1;
  --border-strong: #b8bcc4;
  --text: #1a1d23;
  --text-muted: #6b7280;
  --primary: #1f4e79;
  --primary-hover: #2a6395;
  --accent: #0e7490;
  --danger: #b91c1c;
  --danger-bg: #fef2f2;
  --warning: #b45309;
  --warning-bg: #fffbeb;
  --success: #15803d;
  --success-bg: #f0fdf4;

  /* Layout */
  --sidebar-width: 200px;
  --topbar-height: 56px;

  /* Typography */
  --font: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --mono: "Consolas", "Courier New", monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

/* Sharp corners everywhere */
button, input, select, textarea, .card, .modal-box, table, th, td {
  border-radius: 0 !important;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
}

.hidden { display: none !important; }

/* ---------- Login ---------- */
.login-screen {
  position: fixed; inset: 0;
  display: flex; align-items: center; justify-content: center;
  background: var(--primary);
}
.login-box {
  background: var(--surface);
  padding: 40px;
  width: 380px;
  border: 1px solid var(--border);
}
.login-box h1 { font-size: 22px; margin-bottom: 4px; }
.login-sub { color: var(--text-muted); margin-bottom: 24px; }
.login-box label { display: block; margin-bottom: 16px; font-weight: 600; }
.login-box input {
  display: block; width: 100%; margin-top: 6px;
  padding: 9px 10px; border: 1px solid var(--border-strong);
  font-size: 14px;
}
.error-msg { color: var(--danger); margin-top: 12px; min-height: 18px; }

/* ---------- Buttons ---------- */
.btn-primary {
  background: var(--primary); color: #fff; border: none;
  padding: 9px 18px; cursor: pointer; font-size: 14px; width: 100%;
}
.btn-primary:hover { background: var(--primary-hover); }
.btn-link {
  background: none; border: none; color: var(--accent);
  cursor: pointer; font-size: 13px; margin-top: 12px; text-decoration: underline;
}
.btn {
  background: var(--surface); border: 1px solid var(--border-strong);
  padding: 6px 14px; cursor: pointer; font-size: 13px; color: var(--text);
}
.btn:hover { background: var(--bg); }
.btn-sm { padding: 3px 10px; font-size: 12px; }
.btn-danger { border-color: var(--danger); color: var(--danger); }

/* ---------- Layout ---------- */
.app { display: flex; min-height: 100vh; }
.sidebar {
  width: var(--sidebar-width); background: var(--primary); color: #fff;
  display: flex; flex-direction: column; position: fixed; top: 0; bottom: 0;
}
.brand { padding: 20px 16px; font-size: 16px; font-weight: 700; line-height: 1.3;
  border-bottom: 1px solid rgba(255,255,255,0.15); }
.sidebar nav { flex: 1; padding-top: 8px; }
.sidebar nav a {
  display: block; padding: 11px 16px; color: rgba(255,255,255,0.85);
  text-decoration: none; border-left: 3px solid transparent;
}
.sidebar nav a:hover { background: rgba(255,255,255,0.08); }
.sidebar nav a.active { background: rgba(255,255,255,0.12); border-left-color: #fff; color: #fff; }
.sidebar-footer { padding: 12px 16px; font-size: 12px; border-top: 1px solid rgba(255,255,255,0.15); }
.sidebar-footer span { display: block; color: rgba(255,255,255,0.7); margin-bottom: 4px; word-break: break-all; }
.sidebar-footer .btn-link { color: #fff; margin-top: 0; }

.main { flex: 1; margin-left: var(--sidebar-width); display: flex; flex-direction: column; }
.topbar {
  height: var(--topbar-height); background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; padding: 0 20px; gap: 16px;
  position: sticky; top: 0; z-index: 10;
}
.search-box { position: relative; flex: 1; max-width: 480px; }
.search-box input {
  width: 100%; padding: 8px 12px; border: 1px solid var(--border-strong); font-size: 13px;
}
.search-results {
  position: absolute; top: 100%; left: 0; right: 0; background: var(--surface);
  border: 1px solid var(--border-strong); max-height: 320px; overflow-y: auto; z-index: 100;
}
.search-results .result-item { padding: 9px 12px; cursor: pointer; border-bottom: 1px solid var(--border); }
.search-results .result-item:hover { background: var(--bg); }
.search-results .result-type { font-size: 11px; color: var(--text-muted); text-transform: uppercase; }

.alert-banner {
  background: var(--warning-bg); border: 1px solid var(--warning);
  color: var(--warning); padding: 6px 12px; font-size: 13px;
}

.page-container { padding: 20px; flex: 1; }

/* ---------- Cards & panels ---------- */
.card {
  background: var(--surface); border: 1px solid var(--border);
  padding: 16px; margin-bottom: 16px;
}
.card h2 { font-size: 16px; margin-bottom: 12px; }
.card h3 { font-size: 14px; margin-bottom: 10px; color: var(--text-muted); }

.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; margin-bottom: 16px; }
.stat-card { background: var(--surface); border: 1px solid var(--border); padding: 16px; }
.stat-card .stat-value { font-size: 28px; font-weight: 700; }
.stat-card .stat-label { color: var(--text-muted); font-size: 13px; margin-top: 4px; }
.stat-card.alert .stat-value { color: var(--danger); }

/* ---------- Tables ---------- */
table { width: 100%; border-collapse: collapse; background: var(--surface); }
th, td { border: 1px solid var(--border); padding: 8px 10px; text-align: left; font-size: 13px; }
th { background: var(--bg); font-weight: 600; white-space: nowrap; }
tr.clickable { cursor: pointer; }
tr.clickable:hover { background: var(--bg); }

/* ---------- Badges ---------- */
.badge { display: inline-block; padding: 2px 8px; font-size: 11px; font-weight: 600; border: 1px solid; }
.badge-blue { color: var(--primary); border-color: var(--primary); background: #eff6ff; }
.badge-green { color: var(--success); border-color: var(--success); background: var(--success-bg); }
.badge-red { color: var(--danger); border-color: var(--danger); background: var(--danger-bg); }
.badge-amber { color: var(--warning); border-color: var(--warning); background: var(--warning-bg); }
.badge-gray { color: var(--text-muted); border-color: var(--border-strong); background: var(--bg); }

/* ---------- Forms & filters ---------- */
.filter-bar { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 16px; align-items: center; }
.filter-bar select, .filter-bar input {
  padding: 7px 10px; border: 1px solid var(--border-strong); font-size: 13px; background: var(--surface);
}

/* ---------- Editable fields ---------- */
.editable { cursor: pointer; border-bottom: 1px dashed var(--border-strong); }
.editable:hover { background: var(--warning-bg); }
.editable-input { padding: 4px 6px; border: 1px solid var(--accent); font-size: 13px; width: 200px; }
.manually-edited { background: var(--warning-bg); }

/* ---------- Modal ---------- */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.5);
  display: flex; align-items: center; justify-content: center; z-index: 1000;
}
.modal-box { background: var(--surface); width: 680px; max-width: 92vw; max-height: 85vh;
  display: flex; flex-direction: column; border: 1px solid var(--border-strong); }
.modal-header { padding: 14px 18px; border-bottom: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; }
.modal-header h3 { font-size: 15px; }
.modal-body { padding: 18px; overflow-y: auto; }
.modal-close { background: none; border: none; font-size: 20px; cursor: pointer; color: var(--text-muted); }

/* ---------- Timeline / Gantt ---------- */
.gantt-row { display: flex; align-items: center; border-bottom: 1px solid var(--border); }
.gantt-label { width: 180px; padding: 8px; font-size: 12px; flex-shrink: 0; }
.gantt-track { position: relative; flex: 1; height: 32px; background: var(--bg); }
.gantt-bar { position: absolute; top: 8px; height: 16px; background: var(--accent); min-width: 3px; }
.gantt-bar.delayed { background: var(--danger); }

/* ---------- Explorer graph ---------- */
#explorer-svg { width: 100%; height: 620px; background: var(--surface); border: 1px solid var(--border); }
.node circle { stroke: #fff; stroke-width: 1.5px; cursor: pointer; }
.node text { font-size: 11px; pointer-events: none; }
.link { stroke: var(--border-strong); stroke-opacity: 0.6; }

/* ---------- Detail page ---------- */
.detail-header { display: flex; justify-content: space-between; align-items: flex-start; flex-wrap: wrap; gap: 12px; }
.id-chips { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 8px; }
.id-chip { background: var(--bg); border: 1px solid var(--border); padding: 3px 10px; font-family: var(--mono); font-size: 12px; }
.milestone-strip { display: flex; gap: 0; margin: 16px 0; overflow-x: auto; }
.milestone-item { flex: 1; min-width: 110px; border: 1px solid var(--border); padding: 8px; background: var(--surface); position: relative; }
.milestone-item.done { background: var(--success-bg); border-color: var(--success); }
.milestone-item.delayed { background: var(--danger-bg); border-color: var(--danger); }
.milestone-item .ms-type { font-size: 11px; color: var(--text-muted); text-transform: uppercase; }
.milestone-item .ms-date { font-size: 12px; font-weight: 600; margin-top: 3px; }
.milestone-item .ms-plan { font-size: 10px; color: var(--text-muted); margin-top: 2px; }

.event-item { border-left: 3px solid var(--accent); padding: 8px 12px; margin-bottom: 8px; background: var(--surface); border-top: 1px solid var(--border); border-right: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.event-item .event-meta { font-size: 11px; color: var(--text-muted); margin-top: 3px; }

.section-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 900px) { .section-grid { grid-template-columns: 1fr; } }

.kv-list { display: grid; grid-template-columns: 140px 1fr; gap: 6px 12px; font-size: 13px; }
.kv-list dt { color: var(--text-muted); }
.kv-list dd { font-weight: 500; }

.chart-box { width: 100%; height: 320px; }
.loading { color: var(--text-muted); padding: 40px; text-align: center; }
.empty-state { color: var(--text-muted); padding: 30px; text-align: center; border: 1px dashed var(--border-strong); }