/* ============================================================
   AUMC — base stylesheet
   No external dependencies. System font stack.
   ============================================================ */

/* --- Reset & base ----------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
               "Helvetica Neue", Arial, sans-serif;
  background-color: #f4f6f9;
  color: #1a2332;
  line-height: 1.6;
  min-height: 100vh;
}

/* --- Design tokens ---------------------------------------- */
:root {
  --color-brand:        #1a3a5c;   /* dark navy — primary actions */
  --color-brand-hover:  #14304e;
  --color-surface:      #ffffff;
  --color-border:       #d8dde6;
  --color-text:         #1a2332;
  --color-text-muted:   #5a6a7e;

  --color-error-bg:     #fff0ee;
  --color-error-border: #e8a09a;
  --color-error-text:   #7a2020;

  --color-warning-bg:     #fffbea;
  --color-warning-border: #f0c040;
  --color-warning-text:   #7a5500;

  --radius:   8px;
  --shadow:   0 2px 8px rgba(0, 0, 0, 0.08);
}

/* --- Auth page layout ------------------------------------- */
.page-center {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 24px 16px;
}

/* --- Card ------------------------------------------------- */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  width: 100%;
  max-width: 400px;
  padding: 40px 36px;
}

.card__header {
  text-align: center;
  margin-bottom: 28px;
}

.logo-mark {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-brand);
  background: #eef3f9;
  border: 1px solid #c6d5e8;
  border-radius: 4px;
  padding: 3px 8px;
  margin-bottom: 12px;
}

.card__title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text-muted);
  line-height: 1.4;
}

.card__body {
  margin-top: 24px;
}

/* --- Buttons ---------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  padding: 12px 20px;
  transition: background-color 0.15s ease, color 0.15s ease,
              border-color 0.15s ease;
}

.btn--primary {
  background-color: var(--color-brand);
  color: #ffffff;
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background-color: var(--color-brand-hover);
  color: #ffffff;
}

.btn--full {
  width: 100%;
}

.btn--ghost {
  background: transparent;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  font-size: 14px;
  padding: 8px 14px;
}

.btn--ghost:hover,
.btn--ghost:focus-visible {
  background: #f4f6f9;
  color: var(--color-text);
  border-color: #b0bcc9;
}

/* Focus ring for accessibility */
.btn:focus-visible {
  outline: 3px solid #7aabde;
  outline-offset: 2px;
}

/* --- Alert ------------------------------------------------ */
.alert {
  border-radius: var(--radius);
  border: 1px solid;
  padding: 12px 16px;
  font-size: 14px;
  line-height: 1.5;
  margin-bottom: 20px;
}

.alert--error {
  background-color: var(--color-error-bg);
  border-color: var(--color-error-border);
  color: var(--color-error-text);
}

.alert--warning {
  background-color: var(--color-warning-bg);
  border-color: var(--color-warning-border);
  color: var(--color-warning-text);
}

/* --- Console layout --------------------------------------- */
.layout {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.topbar {
  background: var(--color-brand);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  height: 56px;
  flex-shrink: 0;
}

.topbar .logo-mark {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.25);
  margin-bottom: 0;
}

.topbar .btn--ghost {
  color: rgba(255, 255, 255, 0.8);
  border-color: rgba(255, 255, 255, 0.3);
  font-size: 13px;
}

.topbar .btn--ghost:hover,
.topbar .btn--ghost:focus-visible {
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.5);
}

.main {
  flex: 1;
  padding: 40px 24px;
  max-width: 720px;
  width: 100%;
  margin: 0 auto;
}

/* --- Welcome block ---------------------------------------- */
.welcome {
  margin-top: 16px;
}

.welcome__heading {
  font-size: 26px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.welcome__sub {
  font-size: 15px;
  color: var(--color-text-muted);
}

/* --- Responsive ------------------------------------------- */
@media (max-width: 480px) {
  .card {
    padding: 28px 20px;
  }

  .topbar {
    padding: 0 16px;
  }

  .main {
    padding: 24px 16px;
  }

  .welcome__heading {
    font-size: 22px;
  }
}