/* Techno Service AI Intelligence System — Phase 1 styles
 * Mobile First per Document 07 (UI/UX) and Implementation Roadmap
 * IMPL-STRA-018 (Multi-Device by Default).
 *
 * Design tokens are implemented as CSS custom properties so that future
 * phases can swap palettes without rewriting component CSS.
 */

:root {
  --color-bg: #f6f7f9;
  --color-surface: #ffffff;
  --color-text: #1a1d23;
  --color-text-muted: #5b6470;
  --color-border: #d8dde3;
  --color-primary: #1f3a8a;
  --color-primary-text: #ffffff;
  --color-danger: #b00020;
  --color-success: #1e7a3a;
  --color-warning: #b66b00;
  --radius: 6px;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --shadow-1: 0 1px 2px rgba(0,0,0,.04), 0 1px 1px rgba(0,0,0,.03);
  --shadow-2: 0 4px 12px rgba(0,0,0,.06), 0 2px 4px rgba(0,0,0,.04);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
}

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

/* ---------- Layout ---------- */

.app {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.app-header {
  background: var(--color-primary);
  color: var(--color-primary-text);
  padding: var(--space-3) var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.app-header .brand {
  font-weight: 600;
  font-size: 16px;
  letter-spacing: .2px;
}

.app-header .brand small {
  display: block;
  font-size: 11px;
  font-weight: 400;
  opacity: .8;
  margin-top: 2px;
}

.app-header .user-chip {
  font-size: 12px;
  background: rgba(255,255,255,.12);
  padding: 4px 10px;
  border-radius: 999px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 60vw;
}

.app-header a.signout {
  color: var(--color-primary-text);
  font-size: 12px;
  text-decoration: underline;
}

.app-nav {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-2) var(--space-4);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  font-size: 13px;
}

.app-nav a {
  color: var(--color-text);
  padding: 4px 0;
  border-bottom: 2px solid transparent;
}
.app-nav a.active {
  border-bottom-color: var(--color-primary);
  color: var(--color-primary);
  font-weight: 600;
}

.app-main {
  flex: 1;
  padding: var(--space-4);
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
}

.app-footer {
  text-align: center;
  font-size: 11px;
  color: var(--color-text-muted);
  padding: var(--space-3) var(--space-4);
  border-top: 1px solid var(--color-border);
}

/* ---------- Cards ---------- */

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-5);
  box-shadow: var(--shadow-1);
  margin-bottom: var(--space-4);
}

.card h2, .card h3 { margin-top: 0; }
.card h2 { font-size: 18px; }
.card h3 { font-size: 15px; }

.muted { color: var(--color-text-muted); font-size: 12px; }

/* ---------- Forms ---------- */

.form-row { margin-bottom: var(--space-4); }
.form-row label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: var(--space-1);
}
.form-row input[type=text],
.form-row input[type=email],
.form-row input[type=password],
.form-row select,
.form-row textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 15px;
  background: var(--color-surface);
  color: var(--color-text);
}
.form-row input:focus, .form-row select:focus, .form-row textarea:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 1px;
  border-color: var(--color-primary);
}

.btn {
  display: inline-block;
  padding: 10px 16px;
  border: 1px solid var(--color-primary);
  background: var(--color-primary);
  color: var(--color-primary-text);
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--radius);
  cursor: pointer;
  text-align: center;
  min-height: 44px; /* touch target */
}
.btn:hover { filter: brightness(1.05); }
.btn.secondary { background: transparent; color: var(--color-primary); }
.btn.danger { background: var(--color-danger); border-color: var(--color-danger); }
.btn + .btn { margin-left: var(--space-2); }

/* ---------- Messages ---------- */

.alert {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius);
  margin-bottom: var(--space-4);
  font-size: 13px;
}
.alert.error { background: #fdecea; color: var(--color-danger); border: 1px solid #f5c2c0; }
.alert.success { background: #e8f5ec; color: var(--color-success); border: 1px solid #bfe1c6; }
.alert.info { background: #e8eefb; color: var(--color-primary); border: 1px solid #c2cfe8; }

/* ---------- Tables ---------- */

.table-wrap { overflow-x: auto; }
table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
table.data th, table.data td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
}
table.data th {
  background: #f0f2f5;
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .5px;
  color: var(--color-text-muted);
}
table.data tr:hover td { background: #fafbfc; }
table.data code {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-text-muted);
}

/* ---------- Badges ---------- */

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 500;
  background: #eef0f3;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
.badge.ok { background: #e8f5ec; color: var(--color-success); border-color: #bfe1c6; }
.badge.warn { background: #fff3e0; color: var(--color-warning); border-color: #f5d6a8; }
.badge.danger { background: #fdecea; color: var(--color-danger); border-color: #f5c2c0; }

/* ---------- Filter bar ---------- */

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: end;
  margin-bottom: var(--space-4);
  padding: var(--space-3);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}
.filter-bar .form-row { margin-bottom: 0; min-width: 140px; }
.filter-bar label { font-size: 11px; text-transform: uppercase; letter-spacing: .5px; color: var(--color-text-muted); }

/* ---------- Centered narrow card (sign-in) ---------- */

.narrow {
  max-width: 420px;
  margin: var(--space-6) auto;
}
.narrow .card { padding: var(--space-5); }

/* ---------- Tablet (≥ 600px) ---------- */
@media (min-width: 600px) {
  body { font-size: 15px; }
  .app-main { padding: var(--space-5); }
}

/* ---------- Desktop (≥ 900px) ---------- */
@media (min-width: 900px) {
  body { font-size: 15px; }
  .app-header { padding: var(--space-3) var(--space-5); }
  .app-nav { padding: var(--space-2) var(--space-5); }
  .app-main { padding: var(--space-5); }
  .narrow { margin-top: 10vh; }
}

/* ---------- Large screen (≥ 1400px) ---------- */
@media (min-width: 1400px) {
  .app-main { max-width: 1320px; }
  .narrow { max-width: 460px; }
}


/* ---------- i18n: language switcher + RTL ---------- */
.lang-switcher {
  display: inline-flex;
  gap: .25rem;
  margin-left: auto;
  margin-right: .5rem;
  align-items: center;
}
.lang-link {
  padding: .25rem .5rem;
  border: 1px solid #d1d5db;
  border-radius: 4px;
  font-size: .85rem;
  text-decoration: none;
  color: #1f3a8a;
  background: #fff;
}
.lang-link:hover { background: #f3f4f6; }
.lang-link.active {
  background: #1f3a8a;
  color: #fff;
  border-color: #1f3a8a;
  font-weight: 600;
}
.lang-link[aria-current="true"] {
  background: #1f3a8a;
  color: #fff;
  border-color: #1f3a8a;
  font-weight: 600;
}

/* RTL: flip margins/paddings to logical properties where possible.
   The English baseline uses physical properties; the RTL overrides
   below only adjust what visibly breaks (margins, text alignment,
   the language switcher position). */
html[dir="rtl"] body { text-align: right; }
html[dir="rtl"] .app-header { flex-direction: row-reverse; }
html[dir="rtl"] .lang-switcher { margin-left: .5rem; margin-right: auto; }
html[dir="rtl"] .narrow { margin-left: auto; margin-right: auto; }
html[dir="rtl"] .alert, html[dir="rtl"] .card { text-align: right; }
html[dir="rtl"] table { direction: rtl; }