/* ═══════════════════════════════════════════════════════════════════════
   MMK Insights Newsletter — Styling
   ═══════════════════════════════════════════════════════════════════════ */

:root {
  /* Design Mirror: McKinsey palette */
  --mmk-green-dark: #051c2c;
  --mmk-green: #051c2c;
  --mmk-green-light: #e7eef7;
  --mmk-gold: #2251ff;
  --mmk-cream: #f5f5f5;
  --mmk-white: #ffffff;
  --mmk-text-dark: #051c2c;
  --mmk-text-body: #42535c;
  --mmk-text-muted: #5e6e76;
}

/* ─────────────────────────────────────────────────────────────────── */
/* Newsletter Subscribe Panel (used on multiple pages)                 */
/* ─────────────────────────────────────────────────────────────────── */

.newsletter-subscribe-section {
  background: var(--mmk-cream);
  padding: 60px 20px;
  margin: 60px 0;
}

.newsletter-subscribe-panel {
  background: var(--mmk-white);
  border: 1px solid #eef1f2;
  border-radius: 8px;
  padding: 48px;
  max-width: 600px;
  margin: 0 auto;
  box-shadow: 0 8px 24px rgba(9, 47, 36, 0.08);
}

.newsletter-subscribe-panel h2 {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 28px;
  font-weight: 700;
  color: var(--mmk-text-dark);
  margin: 0 0 12px;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.newsletter-subscribe-copy {
  color: var(--mmk-text-body);
  font-size: 16px;
  line-height: 1.6;
  margin: 0 0 32px;
}

.mmk-insights-brand {
  text-align: center;
  margin-bottom: 16px;
}

.mmk-insights-logo {
  width: clamp(64px, 8vw, 96px);
  height: auto;
  display: block;
  margin: 0 auto 10px;
  object-fit: contain;
}

/* ─────────────────────────────────────────────────────────────────── */
/* Newsletter Form                                                    */
/* ─────────────────────────────────────────────────────────────────── */

.newsletter-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
}

.form-group input,
.form-group select {
  padding: 12px 16px;
  font-size: 14px;
  border: 1px solid #dfe3e6;
  border-radius: 6px;
  background: var(--mmk-white);
  color: var(--mmk-text-dark);
  font-family: Inter, "Segoe UI", Arial, sans-serif;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--mmk-gold);
  box-shadow: 0 0 0 3px rgba(185, 149, 78, 0.1);
}

.form-group input::placeholder {
  color: #a0a08c;
}

.form-checkbox {
  flex-direction: row;
  gap: 8px;
  align-items: flex-start;
}

.form-checkbox label {
  display: flex;
  gap: 8px;
  align-items: flex-start;
  cursor: pointer;
  font-size: 13px;
  line-height: 1.5;
  color: var(--mmk-text-body);
}

.form-checkbox input[type="checkbox"] {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  margin-top: 2px;
  cursor: pointer;
  accent-color: var(--mmk-gold);
}

.newsletter-form-btn {
  padding: 14px 24px;
  border: none;
  border-radius: 6px;
  background: var(--mmk-green-dark);
  color: var(--mmk-white);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.15s ease;
  margin-top: 8px;
}

.newsletter-form-btn:hover:not(:disabled) {
  background: var(--mmk-green);
  transform: translateY(-1px);
}

.newsletter-form-btn:active:not(:disabled) {
  transform: translateY(0);
}

.newsletter-form-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.newsletter-form-btn[aria-busy="true"] {
  position: relative;
}

.newsletter-form-btn[aria-busy="true"]::after {
  content: "";
  position: absolute;
  right: 12px;
  top: 50%;
  width: 14px;
  height: 14px;
  margin-top: -7px;
  border: 2px solid rgba(255, 250, 240, 0.3);
  border-top-color: var(--mmk-white);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.newsletter-form-note {
  font-size: 12px;
  color: var(--mmk-text-muted);
  margin: 8px 0 0;
  line-height: 1.4;
}

/* ─────────────────────────────────────────────────────────────────── */
/* Form Feedback                                                       */
/* ─────────────────────────────────────────────────────────────────── */

.newsletter-form-feedback {
  padding: 12px 16px;
  border-radius: 6px;
  font-size: 13px;
  line-height: 1.5;
  margin-bottom: 16px;
  display: none;
}

.newsletter-form-feedback--success {
  background: #e8f5e9;
  color: #1b5e20;
  border: 1px solid #c8e6c9;
}

.newsletter-form-feedback--error {
  background: #ffebee;
  color: #b71c1c;
  border: 1px solid #ffcdd2;
}

/* ─────────────────────────────────────────────────────────────────── */
/* Newsletter Archive                                                  */
/* ─────────────────────────────────────────────────────────────────── */

.newsletter-archive {
  padding: 80px 20px;
}

.newsletter-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 32px;
  margin-top: 48px;
}

.newsletter-card {
  background: var(--mmk-white);
  border: 1px solid #eef1f2;
  border-radius: 8px;
  padding: 32px;
  display: flex;
  flex-direction: column;
  transition: all 0.2s ease;
}

.newsletter-card:hover {
  border-color: var(--mmk-gold);
  box-shadow: 0 8px 24px rgba(9, 47, 36, 0.08);
}

.newsletter-meta {
  color: var(--mmk-gold);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin: 0 0 8px;
}

.newsletter-card-title {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 20px;
  font-weight: 700;
  color: var(--mmk-text-dark);
  margin: 0 0 12px;
  line-height: 1.3;
}

.newsletter-card-title a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

.newsletter-card-title a:hover {
  color: var(--mmk-green);
}

.newsletter-card-excerpt {
  color: var(--mmk-text-body);
  font-size: 14px;
  line-height: 1.6;
  margin: 0 0 auto;
  padding-bottom: 16px;
}

.newsletter-card-link {
  color: var(--mmk-green-dark);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  transition: color 0.2s ease;
}

.newsletter-card-link:hover {
  color: var(--mmk-gold);
}

/* ─────────────────────────────────────────────────────────────────── */
/* Newsletter Article Page                                            */
/* ─────────────────────────────────────────────────────────────────── */

.newsletter-article {
  padding: 60px 20px;
}

.newsletter-article-header {
  max-width: 700px;
  margin: 0 auto 48px;
  text-align: center;
}

.newsletter-eyebrow {
  color: var(--mmk-gold);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin: 0 0 12px;
}

.newsletter-article-title {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 40px;
  font-weight: 700;
  color: var(--mmk-text-dark);
  margin: 0 0 16px;
  line-height: 1.2;
  letter-spacing: -0.015em;
}

.newsletter-article-published {
  color: var(--mmk-text-muted);
  font-size: 13px;
  margin: 0;
}

.newsletter-article-content {
  max-width: 700px;
  margin: 0 auto;
}

.newsletter-article-intro {
  font-size: 18px;
  line-height: 1.7;
  color: var(--mmk-text-body);
  margin: 0 0 36px;
}

.newsletter-insights {
  margin: 48px 0;
}

.newsletter-insight {
  padding: 24px 0;
  border-bottom: 1px solid #e7eef7;
}

.newsletter-insight:last-child {
  border-bottom: none;
}

.newsletter-insight h2 {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 20px;
  font-weight: 700;
  color: var(--mmk-green);
  margin: 0 0 12px;
  line-height: 1.3;
}

.newsletter-insight p {
  color: var(--mmk-text-body);
  font-size: 15px;
  line-height: 1.7;
  margin: 0;
}

.newsletter-example {
  background: #fbf6e6;
  border-left: 4px solid var(--mmk-gold);
  border-radius: 8px;
  padding: 20px 24px;
  margin: 32px 0;
}

.newsletter-example p {
  color: #3a3322;
  font-size: 15px;
  line-height: 1.6;
  margin: 0;
}

.newsletter-example strong {
  color: #1a3fd9;
}

.newsletter-mmk-lens {
  background: var(--mmk-cream);
  border-radius: 8px;
  padding: 24px;
  margin: 32px 0;
}

.newsletter-mmk-lens p {
  color: var(--mmk-text-body);
  font-size: 15px;
  line-height: 1.7;
  margin: 0;
}

.newsletter-mmk-lens strong {
  color: var(--mmk-text-dark);
}

.newsletter-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin: 40px 0;
}

.newsletter-action-btn {
  display: inline-block;
  padding: 13px 24px;
  border-radius: 6px;
  background: var(--mmk-green-dark);
  color: var(--mmk-white);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-decoration: none;
  transition: all 0.2s ease;
}

.newsletter-action-btn:hover {
  background: var(--mmk-green);
  transform: translateY(-2px);
}

.newsletter-action-secondary {
  background: transparent;
  border: 1px solid var(--mmk-green-dark);
  color: var(--mmk-green-dark);
}

.newsletter-action-secondary:hover {
  background: var(--mmk-cream);
}

.newsletter-article-nav {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid #e7eef7;
  text-align: center;
}

.newsletter-article-nav a {
  color: var(--mmk-green-dark);
  text-decoration: none;
  font-weight: 700;
  transition: color 0.2s ease;
}

.newsletter-article-nav a:hover {
  color: var(--mmk-gold);
}

/* ─────────────────────────────────────────────────────────────────── */
/* Unsubscribe Page                                                    */
/* ─────────────────────────────────────────────────────────────────── */

.unsubscribe-section {
  padding: 80px 20px;
}

.unsubscribe-panel {
  background: var(--mmk-white);
  border: 1px solid #eef1f2;
  border-radius: 8px;
  padding: 48px;
  max-width: 600px;
  margin: 0 auto;
  box-shadow: 0 8px 24px rgba(9, 47, 36, 0.08);
}

.unsubscribe-panel h1 {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 32px;
  font-weight: 700;
  color: var(--mmk-text-dark);
  margin: 0 0 16px;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.unsubscribe-intro {
  color: var(--mmk-text-body);
  font-size: 16px;
  line-height: 1.6;
  margin: 0 0 24px;
}

.unsubscribe-content {
  color: var(--mmk-text-body);
  font-size: 14px;
  line-height: 1.8;
  margin: 0 0 32px;
}

.unsubscribe-content p {
  margin: 0 0 16px;
}

.unsubscribe-content p:last-child {
  margin-bottom: 0;
}

.unsubscribe-content a {
  color: var(--mmk-green-dark);
  font-weight: 700;
  text-decoration: none;
  transition: color 0.2s ease;
}

.unsubscribe-content a:hover {
  color: var(--mmk-gold);
}

.unsubscribe-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.unsubscribe-btn {
  display: inline-block;
  padding: 13px 24px;
  border-radius: 6px;
  background: var(--mmk-green-dark);
  color: var(--mmk-white);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-decoration: none;
  transition: all 0.2s ease;
}

.unsubscribe-btn:hover {
  background: var(--mmk-green);
  transform: translateY(-2px);
}

.unsubscribe-btn-secondary {
  background: transparent;
  border: 1px solid var(--mmk-green-dark);
  color: var(--mmk-green-dark);
}

.unsubscribe-btn-secondary:hover {
  background: var(--mmk-cream);
}

/* ─────────────────────────────────────────────────────────────────── */
/* Responsive                                                          */
/* ─────────────────────────────────────────────────────────────────── */

@media (max-width: 768px) {
  .newsletter-subscribe-panel {
    padding: 32px;
  }

  .newsletter-subscribe-panel h2 {
    font-size: 24px;
  }

  .newsletter-article-title {
    font-size: 28px;
  }

  .newsletter-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .newsletter-actions {
    flex-direction: column;
  }

  .newsletter-action-btn {
    width: 100%;
    text-align: center;
  }

  .unsubscribe-panel {
    padding: 32px;
  }

  .unsubscribe-panel h1 {
    font-size: 24px;
  }

  .unsubscribe-actions {
    flex-direction: column;
  }

  .unsubscribe-btn {
    width: 100%;
    text-align: center;
  }
}