/**
 * Layout Styles
 * Grid, containers, spacing, and structural elements
 */

/* ============================================
   Base Styles
   ============================================ */
* {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scrollbar-gutter: stable;
  background-color: var(--color-background);
  overflow-x: clip;
}

/* Touch devices use overlay scrollbars — no gutter needed */
@media (hover: none) {
  html {
    scrollbar-gutter: auto;
  }
}

body {
  font-family: var(--font-primary);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-text-primary);
  background-color: var(--color-background);
  margin: 0;
  padding: 0;
  overflow-x: clip;
}

/* Non-hero Bootstrap carousels: allow vertical scroll without JS swipe detection blocking it */
.carousel:not(.carousel-hero) {
  touch-action: pan-y;
}

[dir="rtl"] body {
  font-family: var(--font-arabic);
}

/* ============================================
   Containers
   ============================================ */
.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

@media (min-width: 768px) {
  .container {
    padding-inline: var(--space-6);
  }
}

@media (min-width: 1200px) {
  .container {
    padding-inline: var(--space-8);
  }
}

/* ============================================
   Sections
   ============================================ */
section {
  padding-block: var(--section-spacing-mobile);
}

@media (min-width: 768px) {
  section {
    padding-block: var(--section-spacing);
  }
}

/* ============================================
   Homepage Container
   ============================================ */
.homepage-container {
  min-height: 100vh;
  overflow-x: clip;
}

/* ============================================
   Section Headers
   ============================================ */
.section-header {
  margin-bottom: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

@media (min-width: 768px) {
  .section-header {
    flex-direction: row;
    align-items: flex-end;
    justify-content: space-between;
    gap: var(--space-6);
  }
}

.section-header-text {
  flex: 1;
  min-width: 0;
}

.section-title {
  position: relative;
  font-size: clamp(1.125rem, 3vw, 1.75rem);
  font-weight: var(--weight-extrabold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
  line-height: var(--leading-tight);
  padding-bottom: var(--space-3);
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  right: 0;
  width: 4.5rem;
  height: 5px;
  background: linear-gradient(to left, var(--color-accent), var(--color-primary));
  border-radius: var(--radius-full);
}

[dir="ltr"] .section-title::after {
  right: auto;
  left: 0;
  background: linear-gradient(to right, var(--color-primary), var(--color-accent));
}

@media (min-width: 768px) {
  .section-title {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
  }
}

.section-description {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  max-width: 540px;
  line-height: var(--leading-relaxed);
  margin-bottom: 0;
}

.section-cta {
  flex-shrink: 0;
}

.section-cta .btn {
  border-width: 1.5px;
  padding-inline: var(--space-5);
  font-size: var(--text-sm);
  transition: background-color var(--transition-fast),
              color var(--transition-fast),
              box-shadow var(--transition-fast);
}

.section-cta .btn:hover {
  box-shadow: 0 2px 10px rgba(85, 107, 47, 0.25);
}

/* ============================================
   Empty State
   ============================================ */
.empty-state {
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.empty-state .container {
  padding-block: var(--space-16);
}

.empty-state i {
  color: var(--color-gray-300);
  font-size: 6rem;
}

.empty-state h2 {
  font-size: var(--text-2xl);
  font-weight: var(--weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
}

.empty-state p {
  font-size: var(--text-base);
  color: var(--color-text-muted);
}

/* ============================================
   Site Top Bar
   ============================================ */
.site-topbar {
  background-color: var(--color-primary);
  border-bottom: none;
  padding-block: .4rem;
  font-size: var(--text-xs);
  position: relative;
  z-index: 1040;
}

/* Social icon links */
.topbar-social-link {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  font-size: 1rem;
  line-height: 1;
  padding: .25rem;
  transition: color var(--transition-fast, .15s);
}

.topbar-social-link:hover {
  color: var(--color-white);
}

.language-link {
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.75);
  text-decoration: none;
  transition: color var(--transition-fast);
  padding: var(--space-1) var(--space-2);
}

.language-link:hover {
  color: var(--color-white);
}

.language-link.active {
  color: var(--color-white);
  font-weight: var(--weight-semibold);
}

.language-divider {
  color: rgba(255, 255, 255, 0.3);
  user-select: none;
}

/* Notification bell and inline buttons inside the topbar */
.site-topbar .btn-logout-inline {
  background: none;
  border: none;
  padding: 0 var(--space-1);
  cursor: pointer;
  color: rgba(255, 255, 255, 0.75);
  font-size: var(--text-xs);
  line-height: inherit;
  vertical-align: baseline;
}

.site-topbar .btn-logout-inline:hover {
  color: var(--color-white);
}

/* Responsive: compact top bar on xs/sm */
@media (max-width: 575.98px) {
  .site-topbar { padding-block: .25rem; }
  .topbar-social-link { display: none; }
  .topbar-start > .language-divider { display: none; }
}

/* ============================================
   Custom Grid Utilities (Bootstrap Extends)
   ============================================ */
/* Note: Use Bootstrap's built-in .row, .col-*, and .g-* classes
   These are just custom extensions if needed */

/* ============================================
   Accessibility
   ============================================ */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* Skip to main content link */
.skip-to-main {
  position: absolute;
  top: -100px;
  left: var(--space-4);
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--space-3) var(--space-5);
  text-decoration: none;
  border-radius: var(--radius-md);
  z-index: var(--z-tooltip);
  transition: top var(--transition-fast);
}

.skip-to-main:focus {
  top: var(--space-4);
}

/* Focus visible styles */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* ── Mobile Bottom Tab Bar ──────────────────────────────── */
.mobile-tab-bar {
    position: fixed;
    bottom: 0;
    inset-inline-start: 0;
    inset-inline-end: 0;
    background: var(--color-surface);
    border-top: none;
    border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
    display: flex;
    align-items: stretch;
    z-index: var(--z-fixed, 1030);
    padding-bottom: env(safe-area-inset-bottom, 0px);
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.10), 0 -1px 4px rgba(0, 0, 0, 0.06);
}
.mobile-tab-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-3) var(--space-1);
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: var(--text-xs);
    gap: 0;
    transition: color var(--transition-fast);
    min-height: 60px;
}
/* Button reset for the More tab */
button.mobile-tab-item {
    background: none;
    border: none;
    cursor: pointer;
}
/* Hide text labels — icons only */
.mobile-tab-item > span:not(.position-relative) {
    display: none;
}
.mobile-tab-item.active,
.mobile-tab-item:focus-visible {
    color: var(--color-primary);
}
/* Active: icon in a filled circle */
.mobile-tab-item.active i {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    background: var(--color-primary);
    color: var(--color-button-text);
    border-radius: 50%;
}
.mobile-tab-item i {
    font-size: var(--text-xl);
    line-height: 1;
    transition: background var(--transition-fast), color var(--transition-fast);
}
.mobile-tab-badge {
    position: absolute;
    top: -4px;
    inset-inline-end: -8px;
    background: var(--color-error);
    color: #fff;
    font-size: 10px;
    font-weight: var(--weight-bold);
    min-width: 16px;
    height: 16px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 3px;
    line-height: 1;
}
.mobile-tab-badge:empty { display: none; }

/* Tab bar clearance: pad body so no content is hidden behind the fixed bar */
@media (max-width: 767.98px) {
    body {
        padding-bottom: calc(60px + env(safe-area-inset-bottom, 0px));
    }
}

/* In PWA standalone mode the browser chrome is gone — always show the tab bar.
   CSS media query covers Chrome/Android; the .pwa-standalone class (set by JS)
   covers iOS Safari which does not reliably match display-mode:standalone. */
@media (display-mode: standalone) {
    .mobile-tab-bar { display: flex !important; }
    body { padding-bottom: calc(60px + env(safe-area-inset-bottom, 0px)); }
}
.pwa-standalone .mobile-tab-bar { display: flex !important; }
.pwa-standalone { padding-bottom: calc(60px + env(safe-area-inset-bottom, 0px)); }

/* ============================================
   Floating WhatsApp Button (#36)
   ============================================ */
.whatsapp-float {
    position: fixed;
    bottom: max(var(--space-5), env(safe-area-inset-bottom, 20px));
    inset-inline-end: var(--space-5);
    width: var(--btn-icon-lg, 52px);
    height: var(--btn-icon-lg, 52px);
    background: #25D366;
    color: #fff;
    border-radius: var(--radius-full, 9999px);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-2xl, 1.5rem);
    box-shadow: var(--shadow-lg);
    z-index: var(--z-fixed, 1030);
    transition: box-shadow var(--transition-fast);
    text-decoration: none;
}
.whatsapp-float:hover,
.whatsapp-float:focus-visible {
    box-shadow: var(--shadow-xl);
    outline: 2px solid var(--color-white);
    outline-offset: 2px;
}
@media (prefers-reduced-motion: reduce) {
    .whatsapp-float { transition: none; }
}
@media (max-width: 767.98px) {
    .whatsapp-float {
        bottom: calc(60px + var(--space-4));
    }
}