:root {
  --ink: #10212a;
  --muted: #60727a;
  --paper: #ffffff;
  --surface: #f3f7f8;
  --line: #d9e4e7;
  --primary: #007b84;
  --primary-dark: #005c64;
  --warning: #a95500;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
body { margin: 0; min-width: 320px; color: var(--ink); background: linear-gradient(140deg, #e8f4f3, #f9fbfc 55%); }
button, input, select { font: inherit; }
button { cursor: pointer; }
.hidden { display: none !important; }
.app-shell { width: min(1120px, calc(100% - 32px)); min-height: 100vh; margin: 0 auto; padding: 56px 0; }
.auth-card { width: min(440px, 100%); margin: 10vh auto; padding: 40px; border: 1px solid var(--line); border-radius: 22px; background: var(--paper); box-shadow: 0 18px 52px rgba(16, 33, 42, .11); }
.brand-mark { display: grid; place-items: center; width: 48px; height: 48px; margin-bottom: 26px; border-radius: 14px; color: #fff; font-weight: 800; letter-spacing: -.04em; background: var(--primary); }
.brand-mark.warning { background: var(--warning); }
.eyebrow { margin: 0 0 6px; color: var(--primary); font-size: .75rem; font-weight: 800; letter-spacing: .12em; }
h1, h2, p { margin-top: 0; }
h1 { margin-bottom: 8px; font-size: clamp(1.7rem, 4vw, 2.2rem); letter-spacing: -.035em; }
h2 { margin-bottom: 0; font-size: 1.25rem; letter-spacing: -.02em; }
.muted, .empty-state { color: var(--muted); line-height: 1.5; }
.form-stack { display: grid; gap: 17px; margin-top: 26px; }
label { display: grid; gap: 7px; color: #31444b; font-size: .9rem; font-weight: 700; }
input, select { width: 100%; min-height: 45px; padding: 10px 12px; border: 1px solid #bdcdd1; border-radius: 9px; color: var(--ink); background: #fff; outline: none; }
input:focus, select:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(0, 123, 132, .14); }
button { min-height: 43px; padding: 10px 16px; border: 1px solid transparent; border-radius: 9px; font-weight: 800; transition: .18s ease; }
button:disabled { cursor: not-allowed; opacity: .48; }
.primary { color: #fff; background: var(--primary); }
.primary:hover:not(:disabled) { background: var(--primary-dark); }
.secondary { color: var(--primary-dark); border-color: #a8c9cc; background: #fff; }
.secondary:hover { background: #edf7f7; }
.form-message { min-height: 20px; margin: 17px 0 0; color: #a2362c; font-size: .9rem; }
.dashboard { display: grid; gap: 24px; }
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.topbar h1 { margin-bottom: 0; }
.user-actions { display: flex; align-items: center; gap: 14px; }
.user-email { color: var(--muted); font-size: .88rem; }
.dashboard-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.panel { padding: 27px; border: 1px solid var(--line); border-radius: 17px; background: var(--paper); box-shadow: 0 8px 24px rgba(16, 33, 42, .05); }
.panel-heading { margin-bottom: 6px; }
.notice { margin: 0; padding: 13px 15px; border: 1px solid #9dd5cf; border-radius: 9px; color: #075f57; background: #e9f9f6; }
.generated-code { margin-top: 20px; padding: 15px; border: 1px solid #99d5ce; border-radius: 10px; background: #eaf9f6; }
.generated-code p { margin-bottom: 9px; color: #285f5d; font-size: .85rem; line-height: 1.4; }
.generated-code strong { display: block; margin-bottom: 13px; color: #063f43; font-size: 1.2rem; letter-spacing: .09em; overflow-wrap: anywhere; }
.city-list-panel { min-height: 230px; }
.list-heading { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.count-badge { padding: 6px 10px; border-radius: 999px; color: var(--primary-dark); font-size: .83rem; font-weight: 800; background: #e8f4f3; }
.city-list { display: grid; gap: 10px; margin-top: 20px; }
.city-card { display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 16px; border: 1px solid var(--line); border-radius: 11px; }
.city-card h3 { margin: 0 0 3px; font-size: 1rem; }
.city-card p { margin: 0; color: var(--muted); font-size: .85rem; }
.city-meta { display: flex; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }
.tag { padding: 5px 8px; border-radius: 999px; color: #315159; font-size: .76rem; font-weight: 800; background: var(--surface); }
.tag.active { color: #096456; background: #e3f8f2; }
@media (max-width: 720px) {
  .app-shell { width: min(100% - 24px, 1120px); padding: 25px 0; }
  .auth-card { margin: 5vh auto; padding: 28px 22px; }
  .topbar, .user-actions, .city-card { align-items: flex-start; flex-direction: column; }
  .dashboard-grid { grid-template-columns: 1fr; }
  .panel { padding: 22px; }
  .city-meta { justify-content: flex-start; }
}