/* GridAI Portal — design system.
 * Palette and feel borrowed from balance_dashboard/static/dashboard.css so the
 * portal shell sits consistently alongside the live dashboards.
 * System font stack only — no external fonts or CDNs (CSP forbids them).
 * Mobile-first: base styles target 320px, widening at breakpoints.
 */

:root {
  /* Brand */
  --brand-navy:        #01204c;
  --brand-navy-deep:   #011540;
  --brand-green:       #04df00;
  --brand-green-soft:  #01e56c;
  --brand-blue:        #19639c;

  /* Surfaces */
  --bg:                #0a1830;
  --bg-elev:           #0f2243;
  --panel:             rgba(255, 255, 255, 0.04);
  --panel-hover:       rgba(255, 255, 255, 0.07);
  --panel-border:      rgba(255, 255, 255, 0.10);

  /* Ink */
  --ink:               #f4f7ff;
  --body:              rgba(244, 247, 255, 0.86);
  --muted:             rgba(244, 247, 255, 0.55);
  --faint:             rgba(244, 247, 255, 0.30);

  --bad:               #ff5b6e;

  /* Spacing scale */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;

  /* Radius */
  --radius-sm: 8px;
  --radius:    14px;
  --radius-lg: 20px;

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
          Ubuntu, Cantarell, "Helvetica Neue", Arial, sans-serif;

  --focus-ring: 0 0 0 3px rgba(1, 229, 108, 0.45);
  --shadow: 0 8px 28px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
}

/* Base colour on the root element so any area the body doesn't cover (e.g. the
 * scroll over-area) is navy, never white. */
html {
  background: var(--brand-navy-deep);
}

body.portal {
  background: linear-gradient(180deg, var(--bg) 0%, var(--brand-navy-deep) 100%);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden; /* belt-and-braces against accidental horizontal overflow */
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

/* ---------------------------------------------------------------- topbar */

.portal-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: rgba(0, 0, 0, 0.25);
  border-bottom: 1px solid var(--panel-border);
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(8px);
}

.portal-brand {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.2px;
  text-decoration: none;
  color: var(--ink);
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
}
.portal-brand:hover { color: var(--brand-green-soft); }
.portal-brand:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: var(--radius-sm);
}
.portal-brand-mark {
  font-weight: 500;
  font-size: 14px;
  color: var(--muted);
}

/* ---------------------------------------------------------------- layout */

.portal-main {
  flex: 1 0 auto;
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: var(--space-5) var(--space-4);
}

.portal-footer {
  flex-shrink: 0;
  padding: var(--space-4);
  text-align: center;
  color: var(--faint);
  font-size: 12px;
}

@media (min-width: 640px) {
  .portal-topbar { padding: var(--space-3) var(--space-5); }
  .portal-main { padding: var(--space-6) var(--space-5); }
}

/* ---------------------------------------------------------------- auth card */

.auth-card {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: var(--space-6) var(--space-5);
  max-width: 420px;
  margin: var(--space-6) auto;
  text-align: left;
}

.auth-title {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.3px;
  margin: 0 0 var(--space-2);
}

.auth-lead {
  color: var(--body);
  margin: 0 0 var(--space-5);
  font-size: 15px;
}

.auth-message {
  background: rgba(1, 229, 108, 0.10);
  border: 1px solid rgba(1, 229, 108, 0.30);
  border-radius: var(--radius-sm);
  color: var(--ink);
  padding: var(--space-3);
  margin: 0 0 var(--space-4);
  font-size: 14px;
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.auth-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--muted);
}

.auth-input {
  width: 100%;
  font: inherit;
  font-size: 16px; /* 16px avoids iOS Safari zoom-on-focus */
  color: var(--ink);
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-sm);
  padding: 14px var(--space-3);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.auth-input::placeholder { color: var(--faint); }
.auth-input:hover { border-color: rgba(255, 255, 255, 0.22); }
.auth-input:focus,
.auth-input:focus-visible {
  outline: none;
  border-color: var(--brand-green-soft);
  box-shadow: var(--focus-ring);
}

.auth-button {
  display: inline-block;
  width: 100%;
  font: inherit;
  font-size: 16px;
  font-weight: 600;
  text-align: center;
  text-decoration: none;
  color: var(--brand-navy-deep);
  background: linear-gradient(90deg, var(--brand-green), var(--brand-green-soft));
  border: none;
  border-radius: var(--radius-sm);
  padding: 14px var(--space-4);
  margin-top: var(--space-1);
  cursor: pointer;
  transition: filter 0.15s ease, transform 0.05s ease;
}
.auth-button:hover { filter: brightness(1.08); }
.auth-button:active { transform: translateY(1px); }
.auth-button:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}
.auth-button-link { margin-top: var(--space-2); }

.auth-note {
  color: var(--muted);
  font-size: 13px;
  margin: var(--space-5) 0 0;
  line-height: 1.5;
}

.auth-back { margin: var(--space-5) 0 0; }

.auth-link-muted {
  color: var(--muted);
  font-size: 14px;
  text-decoration: none;
}
.auth-link-muted:hover { color: var(--ink); text-decoration: underline; }
.auth-link-muted:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: var(--radius-sm);
}

/* ---------------------------------------------------------------- landing */

.landing { max-width: 900px; margin: 0 auto; }

.landing-head { margin-bottom: var(--space-6); }

.landing-title {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.3px;
  margin: 0 0 var(--space-2);
}

.landing-greeting {
  color: var(--muted);
  margin: 0;
  font-size: 15px;
}

.site-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

@media (min-width: 560px) {
  .site-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 900px) {
  .site-grid { grid-template-columns: repeat(3, 1fr); }
}

.site-card {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  border-top: 3px solid var(--brand-green);
  transition: background 0.15s ease, transform 0.08s ease, border-color 0.15s ease;
}
.site-card:hover {
  background: var(--panel-hover);
  transform: translateY(-2px);
}

.site-card-link {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-5);
  min-height: 110px;
  text-decoration: none;
  color: var(--ink);
}
.site-card-link:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: var(--radius);
}

.site-card-name {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.2px;
}

.site-card-customer {
  color: var(--muted);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.landing-empty {
  background: var(--panel);
  border: 1px dashed var(--panel-border);
  border-radius: var(--radius);
  color: var(--body);
  padding: var(--space-6);
  text-align: center;
}

.landing-reminder {
  margin-top: var(--space-6);
  color: var(--faint);
  font-size: 12px;
}