templates/email/css/_base.css

/* ============================================================
   EMAIL BASE STYLES
   Shared across all ICH Screening email templates.
   Included via Jinja2: {% include 'email/css/_base.css' %}
   NOTE: Email clients do NOT load external stylesheets.
         This file is injected inline at render time by Flask.
============================================================ */

/* ── Reset ──────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body, table, td, a { -webkit-text-size-adjust: 100%; -ms-text-size-adjust: 100%; }
table, td { mso-table-lspace: 0pt; mso-table-rspace: 0pt; border-collapse: collapse; }
img { border: 0; height: auto; line-height: 100%; outline: none; text-decoration: none; -ms-interpolation-mode: bicubic; }
a { text-decoration: none; }

/* ── Color Scheme Declaration ───────────────────────────── */
:root {
  color-scheme: light dark;
}

/* ── LIGHT THEME (default) ──────────────────────────────── */
body {
  background-color: #f0f4f8;
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  color: #1a202c;
}

.email-wrapper {
  width: 100%;
  background-color: #f0f4f8;
  padding: 40px 16px;
}

.email-container {
  max-width: 560px;
  margin: 0 auto;
  background-color: #ffffff;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
}

/* ── Header ─────────────────────────────────────────────── */
.email-header {
  background: linear-gradient(135deg, #0d1b3e 0%, #0a2a4a 50%, #0d1b3e 100%);
  padding: 40px 32px 36px;
  text-align: center;
}

.brand-icon {
  width: 36px;
  height: 36px;
  background: rgba(0, 212, 255, 0.15);
  border: 1.5px solid rgba(0, 212, 255, 0.5);
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  vertical-align: middle;
  margin-right: 10px;
}

.brand-name {
  font-size: 15px;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: 0.5px;
}

.header-title {
  font-size: 22px;
  font-weight: 700;
  color: #ffffff;
  margin-top: 16px;
  letter-spacing: -0.3px;
}

.header-subtitle {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  margin-top: 6px;
}

/* ── Body ────────────────────────────────────────────────── */
.email-body {
  padding: 36px 32px;
}

.greeting {
  font-size: 15px;
  color: #4a5568;
  line-height: 1.7;
  margin-bottom: 28px;
}

.divider {
  border: none;
  border-top: 1px solid #e2e8f0;
  margin: 24px 0;
}

.security-notice {
  font-size: 12px;
  color: #a0aec0;
  line-height: 1.7;
  margin-bottom: 8px;
}

/* ── Footer ──────────────────────────────────────────────── */
.email-footer {
  background-color: #f7f8fb;
  border-top: 1px solid #e2e8f0;
  padding: 20px 32px;
  text-align: center;
}

.footer-brand {
  font-size: 13px;
  font-weight: 700;
  color: #4a5568;
  margin-bottom: 4px;
}

.footer-text {
  font-size: 11px;
  color: #a0aec0;
  line-height: 1.6;
}

/* ── DARK THEME (shared overrides) ──────────────────────── */
@media (prefers-color-scheme: dark) {
  body { background-color: #0b0f1a !important; color: #e2e8f0 !important; }

  .email-wrapper { background-color: #0b0f1a !important; }

  .email-container {
    background-color: #111827 !important;
    box-shadow: 0 4px 32px rgba(0, 0, 0, 0.5) !important;
    border: 1px solid rgba(255, 255, 255, 0.06) !important;
  }

  .email-header {
    background: linear-gradient(135deg, #060d1f 0%, #081428 50%, #060d1f 100%) !important;
  }

  .greeting      { color: #a0aec0 !important; }
  .security-notice { color: #4a5568 !important; }
  .divider       { border-top-color: rgba(255, 255, 255, 0.07) !important; }

  .email-footer  { background-color: #0d1424 !important; border-top-color: rgba(255, 255, 255, 0.07) !important; }
  .footer-brand  { color: #718096 !important; }
  .footer-text   { color: #4a5568 !important; }
}

/* ── RESPONSIVE (shared) ─────────────────────────────────── */
@media only screen and (max-width: 560px) {
  .email-body   { padding: 28px 20px !important; }
  .email-header { padding: 32px 20px 28px !important; }
  .email-footer { padding: 16px 20px !important; }
}