/**
 * Box Planner Marketing Site - Base Styles
 * Non-themeable CSS variables (fonts, spacing, border radius, transitions)
 */

/* ===== Non-Themeable Variables (Global) ===== */
:root {
  /* Typography */
  --font-body: 'Circular Std Book', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-heading: 'Circular Std', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  --font-size-xs: 12px;
  --font-size-sm: 14px;
  --font-size-base: 16px;
  --font-size-md: 18px;
  --font-size-lg: 20px;
  --font-size-xl: 22px;
  --font-size-2xl: 26px;
  --font-size-3xl: 28px;
  --font-size-4xl: 30px;
  --font-size-5xl: 38px;
  --font-size-6xl: 52px;
  --font-size-7xl: 80px;

  /* Spacing (base 5px) */
  --spacing-5: 5px;
  --spacing-10: 10px;
  --spacing-15: 15px;
  --spacing-20: 20px;
  --spacing-25: 25px;
  --spacing-30: 30px;
  --spacing-40: 40px;
  --spacing-50: 50px;
  --spacing-65: 65px;
  --spacing-80: 80px;
  --spacing-100: 100px;

  /* Border Radius */
  --radius-xs: 3px;
  --radius-sm: 5px;
  --radius-md: 7px;
  --radius-lg: 10px;
  --radius-xl: 15px;
  --radius-2xl: 20px;
  --radius-3xl: 25px;
  --radius-full: 50px;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
}

html {
  font-size: 14px;
  position: relative;
  min-height: 100%;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

body {
  margin-bottom: 60px;
  font-family: var(--font-body);
  font-size: var(--font-size-xl);
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: bold;
  color: var(--color-text-primary);
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
  box-shadow: var(--shadow-focus);
}

.form-floating > .form-control-plaintext::placeholder, .form-floating > .form-control::placeholder {
  color: var(--bs-secondary-color);
  text-align: end;
}

.form-floating > .form-control-plaintext:focus::placeholder, .form-floating > .form-control:focus::placeholder {
  text-align: start;
}

/* ===== Component Styles ===== */

/* Primary Button */
.box-btn,
.btn-primary {
  background-color: var(--color-brand-primary);
  color: var(--color-text-inverse);
  border-radius: var(--radius-xl);
  font-size: var(--font-size-xl);
  line-height: 30px;
  padding: var(--spacing-20) var(--spacing-40);
  border: none;
  font-weight: normal;
  transition: all var(--transition-fast);
  text-decoration: none;
  display: inline-block;
}

.box-btn:hover,
.btn-primary:hover {
  background-color: var(--color-brand-primary-hover);
  color: var(--color-text-inverse);
  box-shadow: var(--shadow-button);
}

/* Secondary Button */
.btn-secondary {
  background-color: transparent;
  color: var(--color-brand-primary);
  border: 2px solid var(--color-brand-primary);
  border-radius: var(--radius-xl);
  font-size: var(--font-size-xl);
  padding: 18px 38px;
  transition: all var(--transition-fast);
}

.btn-secondary:hover {
  background-color: var(--color-brand-primary);
  color: var(--color-text-inverse);
}

/* Cards */
.service-block {
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 32px;
  box-shadow: var(--shadow-card);
  transition: all var(--transition-fast);
}

.service-block:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.feature-block {
  background-color: var(--color-brand-primary);
  color: var(--color-text-inverse);
  padding: 32px;
  border-radius: var(--radius-xl);
  min-height: 280px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

/* Navigation */
.navbar {
  background-color: var(--color-bg-primary);
  box-shadow: var(--shadow-nav);
}

.navbar .navbar-brand {
  color: var(--color-text-primary);
}

.navbar-nav .nav-link {
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
  color: var(--color-brand-primary);
  font-weight: 700;
}

.navbar-nav .nav-link.nav-link-primary {
  color: var(--color-brand-primary);
}

/* Theme-aware outline button */
.btn-outline-primary {
  color: var(--color-brand-primary);
  border-color: var(--color-brand-primary);
}

.btn-outline-primary:hover,
.btn-outline-primary:focus {
  color: var(--color-text-inverse);
  background-color: var(--color-brand-primary);
  border-color: var(--color-brand-primary);
}

/* Theme-aware light button (used on dark/brand sections) */
.btn-theme-light {
  background-color: var(--color-bg-primary);
  color: var(--color-brand-primary);
  border: 1px solid var(--color-bg-primary);
}

.btn-theme-light:hover,
.btn-theme-light:focus {
  background-color: var(--color-bg-secondary);
  color: var(--color-brand-primary);
  border-color: var(--color-bg-secondary);
}

/* Theme-aware accordion */
.accordion-item {
  background-color: var(--color-bg-primary);
  border-color: var(--color-border);
}

.accordion-button {
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
}

.accordion-button:not(.collapsed) {
  background-color: var(--color-bg-secondary);
  color: var(--color-brand-primary);
}

.accordion-body {
  background-color: var(--color-bg-primary);
  color: var(--color-text-secondary);
}

html[data-theme="dark"] .accordion-button::after {
  filter: invert(1);
}

/* Theme-aware cards and badges */
.theme-card {
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
}

.badge-theme-primary {
  background-color: var(--color-brand-primary);
  color: var(--color-text-inverse);
  display: inline-flex;
  align-items: center;
}

.badge-theme-secondary {
  background-color: var(--color-bg-secondary);
  color: var(--color-text-primary);
  display: inline-flex;
  align-items: center;
}

/* Tag pills (articles + subscriptions) */
.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.article-tag {
  display: inline-block;
  padding: 0.35rem 0.75rem;
  background: var(--color-bg-secondary);
  color: var(--color-brand-primary);
  border-radius: 1rem;
  font-size: 0.8rem;
  font-weight: 600;
  border: 1px solid rgba(18, 128, 201, 0.18);
  transition: all 0.2s ease;
  text-decoration: none;
}

.article-tag:hover,
.article-tag:focus,
.article-tag.active {
  background: var(--color-brand-primary);
  color: #fff;
  border-color: var(--color-brand-primary);
  transform: translateY(-1px);
}

html[data-theme="dark"] .navbar-toggler-icon {
  filter: invert(1);
}

/* Theme-aware muted text */
.text-muted {
  color: var(--color-text-secondary) !important;
}

/* Theme Switcher */
.theme-toggle-item {
  display: flex;
  align-items: center;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: var(--color-bg-secondary);
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

.theme-toggle:hover {
  color: var(--color-text-primary);
  border-color: var(--color-border-solid);
}

.theme-toggle:focus-visible {
  outline: 2px solid var(--color-brand-primary);
  outline-offset: 2px;
}

.theme-toggle-track {
  position: relative;
  width: 34px;
  height: 18px;
  background: var(--color-border-solid);
  border-radius: 999px;
}

.theme-toggle-thumb {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-bg-primary);
  transition: transform var(--transition-fast);
  box-shadow: var(--shadow-button);
}

html[data-theme="dark"] .theme-toggle-thumb {
  transform: translateX(16px);
}

@media (max-width: 575.98px) {
  .theme-toggle-item {
    width: 100%;
    margin-top: 0.5rem;
  }
  .theme-toggle {
    width: 100%;
    justify-content: center;
  }
}

/* Theme-aware background helpers */
.bg-theme-primary {
  background-color: var(--color-bg-primary);
}

.bg-theme-secondary {
  background-color: var(--color-bg-secondary);
}

.bg-theme-tertiary {
  background-color: var(--color-bg-tertiary);
}

/* Theme-aware text helpers */
.text-theme-primary {
  color: var(--color-text-primary);
}

.text-theme-accent {
  color: var(--color-brand-primary);
}

/* Theme-aware blockquote footer */
.blockquote-footer {
  background: transparent;
  color: var(--color-text-secondary);
}

/* Hero Section */
.hero-banner {
  background-color: var(--color-bg-secondary);
  border-radius: var(--radius-2xl);
  padding: var(--spacing-80) var(--spacing-40);
}

.hero-banner h1 {
  font-size: var(--font-size-7xl);
  letter-spacing: -3.2px;
  margin-bottom: var(--spacing-20);
}

.hero-banner p {
  font-size: var(--font-size-2xl);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-30);
}

/* Hero carousel caption */
.hero-slide-caption {
  background: var(--color-bg-secondary);
  color: var(--color-brand-primary);
  border-radius: 8px;
  padding: 10px;
}

/* Footer */
footer {
  background-color: var(--color-bg-primary);
  border-top: 2px solid var(--color-border);
  padding: var(--spacing-50) 0;
}

footer a {
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

footer a:hover {
  color: var(--color-brand-primary);
  text-decoration: none;
}

/* Footer Banners */
.footer-banners-column {
  margin-bottom: 2rem;
  display: flex;
  justify-content: center;
  align-items: center;
}

/* Social Login Buttons */
.button-facebook {
    background-color: #3B5998;
    color: white;
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    padding: var(--spacing-10) var(--spacing-20);
    text-decoration: none;
    transition: background-color var(--transition-fast);
}
.button-facebook:hover {
    background-color: #2d4373;
    color: white;
}

.button-apple {
    background-color: #000000;
    color: white;
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    padding: var(--spacing-10) var(--spacing-20);
    text-decoration: none;
    transition: background-color var(--transition-fast);
}
.button-apple:hover {
    background-color: #333333;
    color: white;
}

.footer-banners-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 2rem;
  align-items: center;
  justify-items: center;
  width: 100%;
}

.footer-banner-item {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.footer-banner-item a {
  display: block;
  transition: opacity 0.3s ease;
  height: 80px;
  width: 100%;
}

.footer-banner-item a:hover {
  opacity: 0.8;
}

.footer-banner-item img {
  max-width: 100%;
  height: 100%;
  width: auto;
  object-fit: contain;
  filter: grayscale(100%) opacity(0.7);
  transition: all 0.3s ease;
  margin: 0 auto;
  display: block;
}

.footer-banner-item img:hover {
  filter: none;
  opacity: 1;
}

.footer-banner-text {
  margin-top: 0.5rem;
  font-size: 0.875rem;
  color: var(--color-text-muted, #6c757d);
  text-align: center;
  line-height: 1.3;
}

@media (max-width: 768px) {
  .footer-banners-grid {
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1.5rem;
  }

  .footer-banner-item a {
    max-height: 60px;
  }

  .footer-banner-item img {
    max-height: 60px;
  }
}