/**
 * Newsletter Signup Component Styles
 * Reusable component for promoting Weekly WTF newsletter across the site
 *
 * Variants:
 * - .newsletter-banner: Full-width promotional banner (after hero)
 * - .newsletter-compact: Compact inline form (in footer)
 * - .newsletter-card: Card-style CTA (in content areas)
 */

/* ===========================================
   CSS Variables
   =========================================== */
:root {
  --newsletter-primary: #00d4ff;
  --newsletter-primary-dark: #00b8db;
  --newsletter-accent: #8b5cf6;
  --newsletter-bg: linear-gradient(
    135deg,
    #0f172a 0%,
    #1e1b4b 50%,
    #0f172a 100%
  );
  --newsletter-card-bg: rgba(30, 41, 59, 0.8);
  --newsletter-border: rgba(0, 212, 255, 0.2);
  --newsletter-text: #f1f5f9;
  --newsletter-text-muted: #94a3b8;
  --newsletter-success: #22c55e;
  --newsletter-error: #ef4444;
}

/* ===========================================
   Newsletter Banner (Full Width)
   =========================================== */
.newsletter-banner {
  background: var(--newsletter-bg);
  padding: 4rem 1.5rem;
  position: relative;
  overflow: hidden;
  border-top: 1px solid var(--newsletter-border);
  border-bottom: 1px solid var(--newsletter-border);
}

.newsletter-banner::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    var(--newsletter-primary),
    transparent
  );
}

.newsletter-banner__inner {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.newsletter-banner__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(0, 212, 255, 0.1);
  border: 1px solid rgba(0, 212, 255, 0.3);
  padding: 0.5rem 1rem;
  border-radius: 9999px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--newsletter-primary);
  margin-bottom: 1.5rem;
}

.newsletter-banner__badge-icon {
  font-size: 1.25rem;
}

.newsletter-banner__title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--newsletter-text);
  margin: 0 0 1rem;
  line-height: 1.2;
}

.newsletter-banner__title-highlight {
  background: linear-gradient(
    135deg,
    var(--newsletter-primary),
    var(--newsletter-accent)
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.newsletter-banner__subtitle {
  font-size: 1.125rem;
  color: var(--newsletter-text-muted);
  margin: 0 0 2rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* ===========================================
   Newsletter Form (Shared)
   =========================================== */
.newsletter-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 500px;
  margin: 0 auto;
}

@media (min-width: 640px) {
  .newsletter-form {
    flex-direction: row;
  }
}

.newsletter-form__input-wrap {
  flex: 1;
  position: relative;
}

.newsletter-form__input {
  width: 100%;
  padding: 1rem 1.25rem;
  font-size: 1rem;
  border: 2px solid rgba(148, 163, 184, 0.2);
  border-radius: 12px;
  background: rgba(15, 23, 42, 0.8);
  color: var(--newsletter-text);
  transition:
    border-color 0.2s,
    box-shadow 0.2s;
}

.newsletter-form__input::placeholder {
  color: var(--newsletter-text-muted);
}

.newsletter-form__input:focus {
  outline: none;
  border-color: var(--newsletter-primary);
  box-shadow: 0 0 0 4px rgba(0, 212, 255, 0.1);
}

.newsletter-form__btn {
  padding: 1rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  color: #0f172a;
  background: linear-gradient(
    135deg,
    var(--newsletter-primary),
    var(--newsletter-accent)
  );
  border: none;
  border-radius: 12px;
  cursor: pointer;
  transition:
    transform 0.2s,
    box-shadow 0.2s,
    opacity 0.2s;
  white-space: nowrap;
}

.newsletter-form__btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 212, 255, 0.3);
}

.newsletter-form__btn:active {
  transform: translateY(0);
}

.newsletter-form__btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

.newsletter-form__hint {
  font-size: 0.875rem;
  color: var(--newsletter-text-muted);
  margin-top: 0.5rem;
  text-align: center;
}

.newsletter-form__hint a {
  color: var(--newsletter-primary);
  text-decoration: none;
}

.newsletter-form__hint a:hover {
  text-decoration: underline;
}

/* Form Messages */
.newsletter-form__message {
  padding: 0.75rem 1rem;
  border-radius: 8px;
  font-size: 0.875rem;
  text-align: center;
  margin-top: 1rem;
  display: none;
}

.newsletter-form__message--success {
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.3);
  color: var(--newsletter-success);
}

.newsletter-form__message--error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: var(--newsletter-error);
}

.newsletter-form__message.visible {
  display: block;
}

/* ===========================================
   Newsletter Features List
   =========================================== */
.newsletter-features {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(148, 163, 184, 0.1);
}

.newsletter-feature {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--newsletter-text-muted);
}

.newsletter-feature__icon {
  color: var(--newsletter-primary);
  font-size: 1rem;
}

/* ===========================================
   Newsletter Card (Inline CTA)
   =========================================== */
.newsletter-card {
  background: var(--newsletter-card-bg);
  border: 1px solid var(--newsletter-border);
  border-radius: 16px;
  padding: 2rem;
  position: relative;
  overflow: hidden;
}

.newsletter-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 20%;
  right: 20%;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    var(--newsletter-primary),
    transparent
  );
}

.newsletter-card__header {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.newsletter-card__icon {
  width: 48px;
  height: 48px;
  background: rgba(0, 212, 255, 0.1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}

.newsletter-card__title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--newsletter-text);
  margin: 0 0 0.25rem;
}

.newsletter-card__subtitle {
  font-size: 0.875rem;
  color: var(--newsletter-text-muted);
  margin: 0;
}

/* Card form variant */
.newsletter-card .newsletter-form {
  max-width: none;
}

/* ===========================================
   Newsletter Compact (Footer)
   =========================================== */
.newsletter-compact {
  padding: 2rem 0;
}

.newsletter-compact__inner {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  align-items: center;
  text-align: center;
}

@media (min-width: 768px) {
  .newsletter-compact__inner {
    flex-direction: row;
    text-align: left;
  }
}

.newsletter-compact__content {
  flex: 1;
}

.newsletter-compact__title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--newsletter-text);
  margin: 0 0 0.25rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.newsletter-compact__title-icon {
  font-size: 1.25rem;
}

.newsletter-compact__subtitle {
  font-size: 0.875rem;
  color: var(--newsletter-text-muted);
  margin: 0;
}

.newsletter-compact .newsletter-form {
  max-width: 400px;
  width: 100%;
}

.newsletter-compact .newsletter-form__input {
  padding: 0.75rem 1rem;
}

.newsletter-compact .newsletter-form__btn {
  padding: 0.75rem 1.5rem;
}

/* ===========================================
   Newsletter Floating CTA (Mobile)
   =========================================== */
.newsletter-float {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(8px);
  border-top: 1px solid var(--newsletter-border);
  padding: 1rem;
  z-index: 1000;
  transform: translateY(100%);
  transition: transform 0.3s ease-out;
}

.newsletter-float.visible {
  transform: translateY(0);
}

.newsletter-float__inner {
  max-width: 600px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.newsletter-float__text {
  flex: 1;
  font-size: 0.875rem;
  color: var(--newsletter-text);
}

.newsletter-float__text strong {
  color: var(--newsletter-primary);
}

.newsletter-float__btn {
  padding: 0.625rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: #0f172a;
  background: var(--newsletter-primary);
  border: none;
  border-radius: 8px;
  cursor: pointer;
  white-space: nowrap;
}

.newsletter-float__close {
  background: none;
  border: none;
  color: var(--newsletter-text-muted);
  font-size: 1.25rem;
  cursor: pointer;
  padding: 0.25rem;
}

/* Hide on larger screens - prefer inline forms */
@media (min-width: 768px) {
  .newsletter-float {
    display: none;
  }
}

/* ===========================================
   Accessibility
   =========================================== */
.newsletter-form__input:focus-visible,
.newsletter-form__btn:focus-visible {
  outline: 3px solid var(--newsletter-primary);
  outline-offset: 2px;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .newsletter-float,
  .newsletter-form__btn {
    transition: none;
  }

  .newsletter-form__btn:hover {
    transform: none;
  }
}

/* ===========================================
   Logo Placeholder (User will add)
   =========================================== */
.newsletter-logo {
  width: 120px;
  height: auto;
  margin-bottom: 1rem;
}

.newsletter-logo--small {
  width: 80px;
}