/* ─── Login page — rbi-login.css ──────────────────────────────
   Revenued BI authentication flow.
   Layered on top of design-system/colors_and_type.css + rbi.css
   Mobile-first. Breakpoints mirror the rest of the app:
     480px  — small phones
     600px  — large phones / small tablets
     760px  — tablets (matches rbi.css)
     980px  — laptops (matches rbi-cashflow.css)
   ─────────────────────────────────────────────────────────────── */

/* ══ Full-page shell ══════════════════════════════════════════════ */
.rbi-login-page {
  min-height: 100vh;
  min-height: 100dvh; /* dynamic viewport on mobile */
  display: flex;
  flex-direction: column;
  background: var(--bg-2);
}

/* Thin brand gradient strip at the very top */
.rbi-login-topstrip {
  height: 3px;
  background: var(--galaxy-gradient);
  flex-shrink: 0;
}

/* Centred card zone — stacks top-aligned on tiny screens */
.rbi-login-center {
  flex: 1;
  display: flex;
  align-items: flex-start;   /* top-align on mobile so card isn't clipped */
  justify-content: center;
  padding: var(--sp-8) var(--sp-4);
}

/* ══ Card ══════════════════════════════════════════════════════════ */
.rbi-login-card {
  width: 100%;
  max-width: 440px;
  background: var(--bg-1);
  border-radius: var(--r-lg);    /* slightly tighter on mobile */
  border: 1px solid var(--border-1);
  box-shadow: var(--shadow-md);
  padding: var(--sp-8) var(--sp-6);
  display: flex;
  flex-direction: column;
  gap: var(--sp-6);
}

/* ══ Brand mark ════════════════════════════════════════════════════ */
.rbi-login-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--sp-2);
}
.rbi-login-brand img {
  height: 20px;   /* slightly smaller on mobile */
  display: block;
}
.rbi-login-brand-sub {
  font-size: var(--text-caption);
  font-weight: 700;
  letter-spacing: var(--tracking-eyebrow);
  text-transform: uppercase;
  color: var(--growth-galaxy);
}

/* ══ Heading block ═════════════════════════════════════════════════ */
.rbi-login-hd {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}
.rbi-login-title {
  font-family: var(--font-primary);
  font-size: var(--text-sub);    /* 20px on mobile — scales up */
  font-weight: 700;
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-tight);
  color: var(--fg-1);
  margin: 0;
}
.rbi-login-subtitle {
  font-size: 14px;
  line-height: var(--leading-body);
  color: var(--fg-2);
  margin: 0;
}

/* ══ OTP sent banner ═══════════════════════════════════════════════ */
.rbi-login-banner {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  background: var(--fp-5);
  border: 1px solid var(--fp-20);
  border-radius: var(--r-md);
  padding: var(--sp-3) var(--sp-4);
  font-size: var(--text-caption);
  font-weight: 600;
  color: #067a62;
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity 220ms ease, transform 220ms ease;
  pointer-events: none;
}
.rbi-login-banner-show {
  opacity: 1;
  transform: translateY(0);
}
.rbi-login-banner-icon {
  font-size: 14px;
  color: var(--funding-pool);
  flex-shrink: 0;
}

/* ══ Form ══════════════════════════════════════════════════════════ */
.rbi-login-form {
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
}

.rbi-form-field {
  display: flex;
  flex-direction: column;
  gap: var(--sp-1);
}

.rbi-form-field-otp {
  margin-top: var(--sp-1);
}

.rbi-form-label {
  font-size: var(--text-label);
  font-weight: 600;
  color: var(--fg-1);
}

.rbi-form-input {
  /* 48px touch target on mobile — comfortable tap area */
  height: 48px;
  padding: 0 var(--sp-4);
  border: 1.5px solid var(--border-2);
  border-radius: var(--r-md);
  font-family: var(--font-primary);
  font-size: 16px;   /* 16px prevents iOS auto-zoom on focus */
  color: var(--fg-1);
  background: var(--bg-1);
  outline: none;
  /* Improve tap highlight on mobile */
  -webkit-tap-highlight-color: transparent;
  transition: border-color 140ms ease, box-shadow 140ms ease;
  /* Prevent horizontal overflow on narrow screens */
  width: 100%;
  box-sizing: border-box;
}
.rbi-form-input::placeholder { color: var(--fg-3); }
.rbi-form-input:focus {
  border-color: var(--growth-galaxy);
  box-shadow: 0 0 0 3px var(--gg-10);
}
.rbi-form-field-error .rbi-form-input {
  border-color: var(--color-error);
  box-shadow: none;
}
.rbi-form-field-error .rbi-form-input:focus {
  box-shadow: 0 0 0 3px rgba(214, 59, 90, 0.12);
}

/* OTP input — large digits, centred */
.rbi-form-input-otp {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-align: center;
}

.rbi-form-error {
  font-size: var(--text-caption);
  font-weight: 600;
  color: var(--color-error);
  margin-top: 2px;
}

/* Resend link */
.rbi-login-resend {
  align-self: flex-end;
  font-family: var(--font-primary);
  font-size: var(--text-caption);
  font-weight: 600;
  color: var(--growth-galaxy);
  background: transparent;
  border: none;
  cursor: pointer;
  padding: var(--sp-1) 0;   /* extra tap area */
  margin-top: var(--sp-1);
  -webkit-tap-highlight-color: transparent;
  transition: opacity var(--ease-out);
}
.rbi-login-resend:hover { opacity: 0.75; }

/* ══ CTA button ════════════════════════════════════════════════════ */
.rbi-login-cta {
  width: 100%;
  height: 50px;    /* generous touch target */
  font-size: 15px;
  border-radius: var(--r-md);
  margin-top: var(--sp-2);
  -webkit-tap-highlight-color: transparent;
  transition: opacity var(--ease-out), transform var(--ease-out), background var(--ease-out);
}
.rbi-login-cta:disabled {
  opacity: 0.65;
  transform: none;
  cursor: not-allowed;
}

/* ══ Footer note ═══════════════════════════════════════════════════ */
.rbi-login-footer-note {
  font-size: var(--text-caption);
  color: var(--fg-3);
  text-align: center;
  margin: 0;
  line-height: 1.6;
}
.rbi-login-footer-note a {
  color: var(--fg-2);
  text-decoration: underline;
  text-decoration-color: var(--border-strong);
}
.rbi-login-footer-note a:hover { color: var(--fg-1); }

/* ══ Page footer ═══════════════════════════════════════════════════ */
.rbi-login-page-footer {
  padding: var(--sp-5) var(--sp-4);
  text-align: center;
  font-size: var(--text-caption);
  color: var(--fg-3);
  border-top: 1px solid var(--border-2);
  flex-shrink: 0;
}

/* ══ Topbar sign-out button (dashboard pages) ══════════════════════ */
.rbi-topbar-signout {
  font-family: var(--font-primary);
  font-size: 13px;
  font-weight: 600;
  color: var(--fg-2);
  background: transparent;
  border: 1px solid var(--border-1);
  border-radius: var(--r-md);
  padding: 7px 13px;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: color var(--ease-out), border-color var(--ease-out), background var(--ease-out);
}
.rbi-topbar-signout:hover {
  color: var(--fg-1);
  border-color: var(--border-strong);
  background: var(--bg-2);
}

/* ══════════════════════════════════════════════════════════════════
   RESPONSIVE BREAKPOINTS
   480px  small phones
   600px  large phones / small tablets
   760px  tablets (mirrors rbi.css)
   980px  laptops (mirrors rbi-cashflow.css)
   ══════════════════════════════════════════════════════════════════ */

/* ── 480px — small phones ─────────────────────────────────────── */
@media (min-width: 480px) {
  .rbi-login-card {
    padding: var(--sp-8) var(--sp-8);
    gap: var(--sp-6);
  }
  .rbi-login-brand img {
    height: 22px;
  }
  .rbi-login-title {
    font-size: 22px;
  }
  .rbi-login-subtitle {
    font-size: var(--text-body);
  }
}

/* ── 600px — large phones / phablets ─────────────────────────── */
@media (min-width: 600px) {
  .rbi-login-center {
    /* Start centering vertically once there's enough room */
    align-items: center;
    padding: var(--sp-10) var(--sp-6);
  }
  .rbi-login-card {
    border-radius: var(--r-xl);
    box-shadow: var(--shadow-card);
    padding: var(--sp-10) var(--sp-10);
  }
  .rbi-login-brand img {
    height: 24px;
  }
  .rbi-login-title {
    font-size: var(--text-h3);  /* 24px */
  }
  .rbi-form-input {
    height: 44px;
    font-size: var(--text-body);  /* 15px — no zoom risk above 600px */
  }
  .rbi-form-input-otp {
    font-size: 20px;
  }
  .rbi-login-cta {
    height: 46px;
  }
  .rbi-login-banner {
    font-size: var(--text-label);
  }
}

/* ── 760px — tablets ──────────────────────────────────────────── */
@media (min-width: 760px) {
  .rbi-login-center {
    padding: var(--sp-12) var(--sp-8);
  }
  .rbi-login-card {
    padding: var(--sp-12) var(--sp-10);
    gap: var(--sp-8);
  }
  .rbi-login-brand img {
    height: 26px;
  }
  .rbi-login-form {
    gap: var(--sp-5);
  }
  .rbi-login-page-footer {
    padding: var(--sp-6) var(--sp-6);
  }
}

/* ── 980px — laptops and up ───────────────────────────────────── */
@media (min-width: 980px) {
  .rbi-login-center {
    padding: var(--sp-16) var(--sp-10);
  }
}

/* ── Reduced motion ───────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  .rbi-login-banner,
  .rbi-form-input,
  .rbi-login-cta,
  .rbi-login-resend {
    transition: none;
  }
}

/* Logo sizing — controlled via CSS so breakpoints apply cleanly */
.rbi-login-logo {
  height: 20px;
  display: block;
  width: auto;
}
@media (min-width: 480px) { .rbi-login-logo { height: 22px; } }
@media (min-width: 600px) { .rbi-login-logo { height: 24px; } }
@media (min-width: 760px) { .rbi-login-logo { height: 26px; } }