/* ============================================================
   Zimbra Mail Notifier — Site web officiel
   Design aligné sur skin/options.css & skin/popup.css
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --color-bg:           #f3f4f6;
  --color-surface:      #ffffff;
  --color-surface-2:    #f8f9fb;
  --color-border:       #e5e7eb;
  --color-text:         #111827;
  --color-text-muted:   #6b7280;
  --color-text-light:   #9ca3af;
  --color-primary:      #2563eb;
  --color-primary-h:    #1d4ed8;
  --color-primary-soft: #eff6ff;
  --color-success:      #16a34a;
  --color-success-soft: #f0fdf4;
  --color-warning:      #d97706;
  --color-warning-soft: #fffbeb;
  --color-danger:       #dc2626;
  --color-danger-soft:  #fef2f2;
  --color-donate:       #f59e0b;
  --color-sidebar-bg:   #1e2130;
  --color-sidebar-text: #c9ccd4;
  --color-sidebar-h:    #ffffff;
  --color-sidebar-act:  rgba(255,255,255,.10);
  --color-sidebar-brd:  rgba(255,255,255,.06);
  --sidebar-width:      240px;
  --radius-sm:          6px;
  --radius-md:          10px;
  --radius-lg:          14px;
  --shadow-sm:          0 1px 3px rgba(0,0,0,.07);
  --shadow-md:          0 4px 16px rgba(0,0,0,.09);
  --font:               -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --transition:         .14s ease;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg:           #111318;
    --color-surface:      #1a1c22;
    --color-surface-2:    #22252d;
    --color-border:       #2a2d35;
    --color-text:         #e9eaf0;
    --color-text-muted:   #8b8fa8;
    --color-primary-soft: #1e3a5f;
    --color-success-soft: #0f2a1a;
    --color-warning-soft: #2a1f0a;
    --color-danger-soft:  #2a0f0f;
    --color-sidebar-bg:   #13151c;
  }
}

html { scroll-behavior: smooth; }
html, body { height: 100%; }

body {
  font-family: var(--font);
  font-size: 14px;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  line-height: 1.55;
}

a { color: var(--color-primary); text-decoration: none; }
a:hover { color: var(--color-primary-h); text-decoration: underline; }

.icon {
  display: inline-block;
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  pointer-events: none;
  vertical-align: middle;
}
.icon--sm { width: 13px; height: 13px; }
.icon--md { width: 18px; height: 18px; }
.icon--lg { width: 24px; height: 24px; }

/* ─── Layout ──────────────────────────────────────────────── */
.site-layout {
  display: flex;
  min-height: 100vh;
}

/* ─── Sidebar ─────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-width);
  flex-shrink: 0;
  background: var(--color-sidebar-bg);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  overflow-y: auto;
  z-index: 200;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 18px 16px 14px;
  border-bottom: 1px solid var(--color-sidebar-brd);
}

.sidebar-brand img {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
}

.sidebar-brand-text {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.sidebar-brand-text strong {
  font-weight: 700;
  font-size: 13.5px;
  color: var(--color-sidebar-h);
  letter-spacing: .01em;
  line-height: 1.2;
}

.sidebar-brand-text span {
  font-size: 11px;
  color: var(--color-sidebar-text);
  opacity: .75;
}

/* Language switcher */
.lang-switcher {
  padding: 10px 12px 6px;
  border-bottom: 1px solid var(--color-sidebar-brd);
}

.lang-label {
  display: block;
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--color-sidebar-text);
  opacity: .65;
  margin-bottom: 5px;
}

.lang-select {
  width: 100%;
  padding: 6px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-sidebar-brd);
  background: rgba(255,255,255,.06);
  color: var(--color-sidebar-h);
  font-size: 12.5px;
  font-family: var(--font);
  cursor: pointer;
  outline: none;
}

.lang-select:focus {
  border-color: var(--color-primary);
}

.lang-select option {
  background: var(--color-sidebar-bg);
  color: var(--color-sidebar-h);
}

.sidebar-nav {
  flex: 1;
  padding: 10px 8px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 8px 10px;
  border: none;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--color-sidebar-text);
  cursor: pointer;
  text-align: left;
  font-size: 13px;
  font-weight: 500;
  transition: background var(--transition), color var(--transition);
  text-decoration: none;
}

.nav-item:hover {
  background: var(--color-sidebar-act);
  color: var(--color-sidebar-h);
  text-decoration: none;
}

.nav-item.active {
  background: var(--color-primary);
  color: #fff;
}

.nav-item .icon { width: 16px; height: 16px; }

.sidebar-donate {
  padding: 14px 12px;
  border-top: 1px solid var(--color-sidebar-brd);
}

.btn-donate {
  display: block;
  text-align: center;
  padding: 8px 12px;
  border-radius: var(--radius-md);
  background: var(--color-donate);
  color: #1a1005;
  font-weight: 700;
  font-size: 12.5px;
  text-decoration: none;
  transition: filter var(--transition), transform var(--transition);
}
.btn-donate:hover { filter: brightness(1.08); transform: translateY(-1px); text-decoration: none; color: #1a1005; }

.donate-msg {
  margin-top: 7px;
  font-size: 10.5px;
  color: var(--color-sidebar-text);
  line-height: 1.45;
  opacity: .75;
}

/* ─── Main ────────────────────────────────────────────────── */
.site-main {
  flex: 1;
  margin-left: var(--sidebar-width);
  min-width: 0;
}

/* Hero header (popup-style) */
.hero {
  background: var(--color-primary);
  color: #fff;
  padding: 36px 40px 32px;
}

.hero-inner {
  max-width: 900px;
  display: flex;
  align-items: flex-start;
  gap: 20px;
}

.hero-logo {
  width: 64px;
  height: 64px;
  flex-shrink: 0;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

.hero-content h1 {
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -.02em;
  margin-bottom: 6px;
}

.hero-content p {
  font-size: 15px;
  opacity: .92;
  max-width: 560px;
  margin-bottom: 18px;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 11.5px;
  font-weight: 600;
  background: rgba(255,255,255,.15);
  color: #fff;
}

.badge--version {
  background: rgba(255,255,255,.22);
}

/* Content sections */
.content {
  padding: 32px 40px 60px;
  max-width: 960px;
}

.section {
  margin-bottom: 48px;
  scroll-margin-top: 24px;
}

.section:last-child { margin-bottom: 0; }

.section h2 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-border);
}

.section h3 {
  font-size: 14px;
  font-weight: 700;
  margin: 20px 0 10px;
  color: var(--color-text);
}

.section p { margin-bottom: 12px; color: var(--color-text-muted); }
.section p:last-child { margin-bottom: 0; }

.section ul, .section ol {
  margin: 0 0 14px 20px;
  color: var(--color-text-muted);
}
.section li { margin-bottom: 6px; }

/* Cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 14px;
  margin-top: 16px;
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 18px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--color-primary-soft);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
}

.card h3 {
  font-size: 14px;
  font-weight: 700;
  margin: 0 0 6px;
  color: var(--color-text);
}

.card p {
  font-size: 13px;
  margin: 0;
  line-height: 1.5;
}

/* Feature list with icons */
.feature-list {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 14px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin: 0;
}

.feature-list .feature-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: var(--color-primary-soft);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.feature-list strong {
  display: block;
  font-size: 13.5px;
  color: var(--color-text);
  margin-bottom: 2px;
}

.feature-list span {
  font-size: 13px;
  color: var(--color-text-muted);
}

/* Store buttons */
.store-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 20px 0;
}

.btn-store {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 20px;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: transform var(--transition), filter var(--transition);
  border: none;
  cursor: pointer;
}

.btn-store:hover { transform: translateY(-2px); filter: brightness(1.05); text-decoration: none; }

.btn-store--chrome {
  background: #1a73e8;
  color: #fff;
}

.btn-store--firefox {
  background: #ff7139;
  color: #fff;
}

.btn-store--github {
  background: var(--color-surface-2);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-store svg { width: 20px; height: 20px; flex-shrink: 0; }

/* Screenshots */
.screenshot-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
  margin-top: 16px;
}

.screenshot-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.screenshot-item img {
  width: 100%;
  display: block;
  border-bottom: 1px solid var(--color-border);
}

.screenshot-item figcaption {
  padding: 10px 12px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--color-text-muted);
  text-align: center;
}

/* Compatibility boxes */
.compat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 16px;
}

.compat-box {
  padding: 16px 18px;
  border-radius: var(--radius-md);
  border: 1px solid;
}

.compat-box--ok {
  background: var(--color-success-soft);
  border-color: rgba(22,163,74,.25);
}

.compat-box--warn {
  background: var(--color-warning-soft);
  border-color: rgba(217,119,6,.25);
}

.compat-box h3 {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13.5px;
  margin: 0 0 10px;
}

.compat-box--ok h3 { color: var(--color-success); }
.compat-box--warn h3 { color: var(--color-warning); }

.compat-box ul {
  margin: 0 0 0 16px;
  font-size: 13px;
}

/* Version timeline */
.version-list {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  position: relative;
}

.version-list::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--color-border);
}

.version-item {
  position: relative;
  padding: 0 0 20px 28px;
  margin: 0;
}

.version-item::before {
  content: '';
  position: absolute;
  left: 2px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-primary);
  border: 2px solid var(--color-bg);
  box-shadow: 0 0 0 2px var(--color-primary);
}

.version-item--major::before {
  width: 14px;
  height: 14px;
  left: 1px;
  top: 5px;
  background: var(--color-donate);
  box-shadow: 0 0 0 2px var(--color-donate);
}

.version-header {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 4px;
}

.version-tag {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text);
}

.version-date {
  font-size: 12px;
  color: var(--color-text-light);
}

.version-desc {
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* Steps */
.steps {
  counter-reset: step;
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
}

.steps li {
  counter-increment: step;
  position: relative;
  padding: 0 0 18px 36px;
  margin: 0;
  color: var(--color-text-muted);
}

.steps li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.steps li strong { color: var(--color-text); }

/* About card */
.about-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  max-width: 480px;
}

.about-logo {
  width: 96px;
  height: 96px;
  margin-bottom: 16px;
}

.about-card h3 {
  font-size: 18px;
  margin: 0 0 8px;
}

.about-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin: 20px 0;
}

.about-links a {
  font-size: 13px;
  font-weight: 600;
}

.about-meta {
  font-size: 12.5px;
  color: var(--color-text-muted);
  margin-top: 12px;
}

/* Info callout */
.callout {
  padding: 14px 16px;
  border-radius: var(--radius-md);
  border-left: 4px solid var(--color-primary);
  background: var(--color-primary-soft);
  margin: 16px 0;
  font-size: 13px;
  color: var(--color-text-muted);
}

.callout strong { color: var(--color-text); }

/* Footer */
.site-footer {
  margin-left: var(--sidebar-width);
  padding: 20px 40px;
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 12.5px;
  color: var(--color-text-muted);
}

/* Mobile menu toggle */
.menu-toggle {
  display: none;
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 300;
  width: 40px;
  height: 40px;
  border: none;
  border-radius: var(--radius-sm);
  background: var(--color-primary);
  color: #fff;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
}

.menu-toggle svg { width: 20px; height: 20px; stroke: currentColor; fill: none; stroke-width: 2.5; }

/* Back to top */
.back-to-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition), transform var(--transition);
  z-index: 100;
}

.back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
}

.back-to-top:hover { transform: translateY(-2px); background: var(--color-primary-h); }

/* Responsive */
@media (max-width: 860px) {
  .menu-toggle { display: flex; }

  .sidebar {
    transform: translateX(-100%);
    transition: transform .25s ease;
  }

  .sidebar.open { transform: translateX(0); }

  .site-main,
  .site-footer { margin-left: 0; }

  .hero { padding: 56px 20px 28px; }
  .content { padding: 24px 20px 48px; }
  .compat-grid { grid-template-columns: 1fr; }
  .site-footer { padding: 16px 20px; }
}

@media (max-width: 480px) {
  .hero-inner { flex-direction: column; align-items: center; text-align: center; }
  .hero-badges { justify-content: center; }
  .store-buttons { flex-direction: column; }
  .btn-store { justify-content: center; }
}