:root {
  --navy: #072c72;
  --navy-700: #0a3a93;
  --navy-50: #eef3fc;
  --accent: #666699;
  --ink: #1b2333;
  --muted: #6b7587;
  --line: #e3e8f0;
  --bg: #f5f7fb;
  --white: #ffffff;
  --red: #e23b3b;
  --green: #1f9d57;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(7, 44, 114, .06), 0 8px 24px rgba(7, 44, 114, .08);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  min-height: 100vh;
}
.hidden { display: none !important; }
.muted { color: var(--muted); }
.small { font-size: 13px; }

/* Topbar */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 28px; background: var(--white);
  border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 10;
}
.brand { display: flex; align-items: center; gap: 14px; }
.logo { height: 30px; }
.product {
  font-weight: 700; color: var(--navy); font-size: 15px;
  padding-left: 14px; border-left: 1px solid var(--line); letter-spacing: .2px;
}
.user-box { display: flex; align-items: center; gap: 14px; font-size: 14px; color: var(--muted); }

/* Buttons */
.btn {
  font-family: var(--font); font-weight: 600; font-size: 14px;
  border: 1px solid transparent; border-radius: 9px; padding: 10px 16px;
  cursor: pointer; transition: .15s ease; line-height: 1;
}
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-primary { background: var(--navy); color: #fff; }
.btn-primary:not(:disabled):hover { background: var(--navy-700); }
.btn-ghost { background: transparent; border-color: var(--line); color: var(--ink); }
.btn-ghost:hover { background: var(--navy-50); }
.btn-danger { background: #fff; color: var(--red); border-color: #f0c9c9; }
.btn-danger:hover { background: #fdf0f0; }
.btn-block { width: 100%; padding: 13px; }

/* Auth */
.auth-view { display: grid; place-items: center; padding: 64px 20px; }
.auth-card {
  background: var(--white); width: 100%; max-width: 400px; padding: 40px;
  border-radius: 16px; box-shadow: var(--shadow); border: 1px solid var(--line);
  text-align: center;
}
.auth-logo { height: 40px; margin-bottom: 22px; }
.auth-card h1 { margin: 0 0 6px; font-size: 24px; color: var(--navy); font-weight: 800; }
.form { display: flex; flex-direction: column; gap: 14px; margin-top: 26px; text-align: left; }
label { font-size: 13px; font-weight: 600; color: var(--ink); display: flex; flex-direction: column; gap: 7px; }
input, select {
  font-family: var(--font); font-size: 14px; padding: 11px 13px; border: 1px solid var(--line);
  border-radius: 9px; background: #fff; color: var(--ink); font-weight: 500;
}
input:focus, select:focus { outline: none; border-color: var(--navy); box-shadow: 0 0 0 3px rgba(7,44,114,.12); }
.switch { margin-top: 20px; font-size: 14px; }
.switch a { color: var(--navy); font-weight: 600; text-decoration: none; }
.error { color: var(--red); font-size: 13px; font-weight: 600; margin: 0; }

/* Dashboard */
.dash-view { padding: 32px; max-width: 1180px; margin: 0 auto; }
.grid { display: grid; grid-template-columns: 1fr 1.15fr; gap: 24px; align-items: start; }
@media (max-width: 880px) { .grid { grid-template-columns: 1fr; } }
.card {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 26px;
}
.card h2 { margin: 0 0 18px; font-size: 18px; color: var(--navy); font-weight: 700; }

/* Dropzone */
.dropzone {
  border: 2px dashed #c5d0e4; border-radius: var(--radius); padding: 34px 20px;
  text-align: center; cursor: pointer; transition: .15s; background: #fafbfe;
}
.dropzone:hover, .dropzone.drag { border-color: var(--navy); background: var(--navy-50); }
.dropzone.has-file { border-style: solid; border-color: var(--green); background: #f1fbf5; }
.dz-icon { width: 38px; height: 38px; color: var(--navy); margin-bottom: 8px; }
.dz-inner p { margin: 3px 0; font-size: 14px; }
.field { margin: 20px 0; }
.field, .field select { width: 100%; }

.result { margin-top: 16px; padding: 14px; border-radius: 9px; background: #f1fbf5; border: 1px solid #cdeed9; font-size: 14px; }
.result a { color: var(--green); font-weight: 700; text-decoration: none; }
.warn { margin-top: 12px; padding: 12px 14px; border-radius: 9px; background: #fff8ec; border: 1px solid #f3e0b8; font-size: 13px; color: #8a6d1f; }

/* Rules editor */
.rules-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 16px; }
.rules-head h2 { margin: 0; }
.rules-actions { display: flex; gap: 8px; }
.rules-editor { display: flex; flex-direction: column; gap: 18px; }
.col-rule { border: 1px solid var(--line); border-radius: 10px; padding: 16px; }
.col-rule-head { display: flex; gap: 10px; align-items: center; margin-bottom: 12px; }
.col-rule-head input { flex: 1; font-weight: 600; }
.band-row { display: grid; grid-template-columns: auto 64px auto 64px 34px auto; gap: 8px; align-items: center; margin-bottom: 8px; font-size: 13px; }
.band-row input[type=number] { padding: 7px 8px; }
.band-row input[type=color] { width: 34px; height: 34px; padding: 2px; border-radius: 7px; cursor: pointer; }
.band-row .lbl { color: var(--muted); }
.icon-btn { background: none; border: none; color: var(--muted); cursor: pointer; font-size: 18px; padding: 0 4px; }
.icon-btn:hover { color: var(--red); }
.add-band, .add-col { font-size: 13px; color: var(--navy); background: none; border: none; cursor: pointer; font-weight: 600; padding: 4px 0; }
.rules-foot { display: flex; gap: 10px; margin-top: 18px; align-items: center; }
.rules-foot input { flex: 1; }