/* ============================================================
   PLATEFORME FINANCIERE - Layout CSS
   Fintech SaaS Platform Layout System
   ============================================================ */

/* ------------------------------------------------------------
   CSS Custom Properties
   ------------------------------------------------------------ */
:root {
  --color-primary: #3B82F6;
  --color-primary-hover: #2563EB;
  --color-primary-light: rgba(59, 130, 246, 0.1);
  --color-navy: #0F172A;
  --color-navy-light: #1E293B;
  --sidebar-width: 260px;
  --topbar-height: 64px;
  --content-max-width: 1400px;
  --border-color: #E2E8F0;
  --text-primary: #0F172A;
  --text-secondary: #64748B;
  --white: #FFFFFF;
  --transition-speed: 0.25s;
}

/* ------------------------------------------------------------
   1. App Layout
   ------------------------------------------------------------ */
.app-layout {
  display: flex;
  min-height: 100vh;
  background-color: #F8FAFC;
}

/* ------------------------------------------------------------
   2. Sidebar
   ------------------------------------------------------------ */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--sidebar-width);
  background-color: var(--color-navy);
  color: var(--white);
  display: flex;
  flex-direction: column;
  z-index: 100;
  transition: transform var(--transition-speed) ease;
  overflow: hidden;
}

/* -- Sidebar Header / Logo ---------------------------------- */
.sidebar-header {
  padding: 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  flex-shrink: 0;
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--white);
}

.sidebar-logo:hover {
  text-decoration: none;
  color: var(--white);
}

.sidebar-logo-monogram {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: var(--white);
  flex-shrink: 0;
}

.sidebar-logo-text {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.3;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-logo-text span {
  display: block;
  font-size: 11px;
  font-weight: 400;
  opacity: 0.5;
  margin-top: 2px;
}

/* -- Sidebar Navigation ------------------------------------- */
.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 16px 0;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.15) transparent;
}

.sidebar-nav::-webkit-scrollbar {
  width: 4px;
}

.sidebar-nav::-webkit-scrollbar-track {
  background: transparent;
}

.sidebar-nav::-webkit-scrollbar-thumb {
  background-color: rgba(255, 255, 255, 0.15);
  border-radius: 4px;
}

.sidebar-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

/* -- Nav Section Title -------------------------------------- */
.nav-section-title {
  display: block;
  padding: 20px 20px 8px 20px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.35);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.nav-section-title:first-child {
  padding-top: 4px;
}

/* -- Nav Item ----------------------------------------------- */
.nav-item {
  display: block;
}

.nav-item a,
a.nav-item {
  display: flex;
  align-items: center;
  padding: 10px 20px;
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  font-size: 14px;
  font-weight: 450;
  border-left: 3px solid transparent;
  transition:
    background-color 0.15s ease,
    color 0.15s ease,
    border-color 0.15s ease;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.nav-item a:hover,
a.nav-item:hover {
  background-color: rgba(255, 255, 255, 0.05);
  color: rgba(255, 255, 255, 0.95);
  text-decoration: none;
}

/* Active nav item */
.nav-item.active a,
a.nav-item.active {
  background-color: rgba(59, 130, 246, 0.1);
  border-left-color: var(--color-primary);
  color: var(--white);
}

.nav-item.active a i,
.nav-item.active a svg,
a.nav-item.active i,
a.nav-item.active svg {
  color: var(--color-primary);
  opacity: 1;
}

/* Nav item icons */
.nav-item a i,
.nav-item a svg,
a.nav-item i,
a.nav-item svg {
  width: 20px;
  height: 20px;
  min-width: 20px;
  margin-right: 12px;
  font-size: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  opacity: 0.6;
  transition: opacity 0.15s ease, color 0.15s ease;
}

.nav-item a:hover i,
.nav-item a:hover svg,
a.nav-item:hover i,
a.nav-item:hover svg {
  opacity: 0.9;
}

/* Nav item badge (for counts like unread notifications) */
.nav-item-badge {
  margin-left: auto;
  padding: 2px 8px;
  font-size: 11px;
  font-weight: 600;
  border-radius: 10px;
  background-color: var(--color-primary);
  color: var(--white);
  line-height: 1.4;
}

/* -- Sidebar Footer / User Info ----------------------------- */
.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  flex-shrink: 0;
}

.sidebar-user {
  display: flex;
  align-items: center;
  gap: 12px;
}

.sidebar-user-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: var(--color-navy-light);
  border: 2px solid rgba(255, 255, 255, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 600;
  color: var(--white);
  flex-shrink: 0;
  overflow: hidden;
}

.sidebar-user-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
}

.sidebar-user-info {
  flex: 1;
  min-width: 0;
}

.sidebar-user-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--white);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-user-role {
  font-size: 11px;
  color: rgba(255, 255, 255, 0.45);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-logout-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: none;
  background: rgba(255, 255, 255, 0.05);
  color: rgba(255, 255, 255, 0.5);
  border-radius: 6px;
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease;
  flex-shrink: 0;
}

.sidebar-logout-btn:hover {
  background-color: rgba(239, 68, 68, 0.15);
  color: #EF4444;
}

/* ------------------------------------------------------------
   3. Topbar
   ------------------------------------------------------------ */
.topbar {
  position: sticky;
  top: 0;
  height: var(--topbar-height);
  background-color: var(--white);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  z-index: 50;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.topbar-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
  line-height: 1.2;
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* -- Notification Bell -------------------------------------- */
.notification-bell {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  border-radius: 8px;
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease;
  font-size: 18px;
}

.notification-bell:hover {
  background-color: #F1F5F9;
  color: var(--text-primary);
}

.notification-bell-badge {
  position: absolute;
  top: 4px;
  right: 4px;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  font-size: 10px;
  font-weight: 700;
  line-height: 18px;
  text-align: center;
  color: var(--white);
  background-color: #EF4444;
  border-radius: 9px;
  border: 2px solid var(--white);
  pointer-events: none;
}

.notification-bell-badge:empty {
  display: none;
}

/* -- Language Switcher -------------------------------------- */
.language-switcher {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  padding: 0 12px;
  border: 1px solid var(--border-color);
  background: var(--white);
  color: var(--text-secondary);
  border-radius: 8px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  transition: border-color 0.15s ease, color 0.15s ease;
  gap: 6px;
}

.language-switcher:hover {
  border-color: #CBD5E1;
  color: var(--text-primary);
}

.language-switcher-flag {
  font-size: 16px;
  line-height: 1;
}

/* -- User Menu (Topbar) ------------------------------------- */
.user-menu {
  position: relative;
}

.user-menu-trigger {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 4px 8px 4px 4px;
  border: 1px solid transparent;
  background: transparent;
  border-radius: 8px;
  cursor: pointer;
  transition: background-color 0.15s ease;
}

.user-menu-trigger:hover {
  background-color: #F1F5F9;
}

.user-menu-avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 600;
  overflow: hidden;
}

.user-menu-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
}

.user-menu-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
}

.user-menu-chevron {
  font-size: 12px;
  color: var(--text-secondary);
  transition: transform 0.2s ease;
}

.user-menu.open .user-menu-chevron {
  transform: rotate(180deg);
}

.user-menu-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 200px;
  background: var(--white);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08), 0 4px 10px rgba(0, 0, 0, 0.04);
  padding: 6px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition:
    opacity 0.15s ease,
    visibility 0.15s ease,
    transform 0.15s ease;
  z-index: 200;
}

.user-menu.open .user-menu-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.user-menu-dropdown a,
.user-menu-dropdown button {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 10px 14px;
  font-size: 13px;
  color: var(--text-primary);
  text-decoration: none;
  border: none;
  background: none;
  border-radius: 6px;
  cursor: pointer;
  transition: background-color 0.12s ease;
}

.user-menu-dropdown a:hover,
.user-menu-dropdown button:hover {
  background-color: #F1F5F9;
}

.user-menu-dropdown i,
.user-menu-dropdown svg {
  width: 16px;
  color: var(--text-secondary);
}

.user-menu-divider {
  height: 1px;
  background-color: var(--border-color);
  margin: 6px 0;
}

.user-menu-dropdown .logout-item {
  color: #EF4444;
}

.user-menu-dropdown .logout-item i,
.user-menu-dropdown .logout-item svg {
  color: #EF4444;
}

/* -- Hamburger Button (mobile only) ------------------------- */
.hamburger-btn {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: none;
  background: transparent;
  color: var(--text-primary);
  border-radius: 8px;
  cursor: pointer;
  font-size: 20px;
  transition: background-color 0.15s ease;
}

.hamburger-btn:hover {
  background-color: #F1F5F9;
}

/* ------------------------------------------------------------
   4. Main Content
   ------------------------------------------------------------ */
.main-content {
  margin-left: var(--sidebar-width);
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.content-area {
  padding: 32px;
  max-width: var(--content-max-width);
  width: 100%;
  margin: 0 auto;
  flex: 1;
}

/* ------------------------------------------------------------
   5. Page Header
   ------------------------------------------------------------ */
.page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 32px;
  gap: 24px;
  flex-wrap: wrap;
}

.page-header-left {
  flex: 1;
  min-width: 0;
}

.page-header-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 4px 0;
  line-height: 1.3;
}

.page-header-subtitle {
  font-size: 14px;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.5;
}

.page-header-right {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

/* -- Breadcrumbs -------------------------------------------- */
.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.breadcrumbs a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.15s ease;
}

.breadcrumbs a:hover {
  color: var(--color-primary);
}

.breadcrumbs-separator {
  font-size: 10px;
  opacity: 0.5;
}

.breadcrumbs-current {
  color: var(--text-primary);
  font-weight: 500;
}

/* ------------------------------------------------------------
   6. Sidebar Overlay (mobile)
   ------------------------------------------------------------ */
.sidebar-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(15, 23, 42, 0.6);
  z-index: 99;
  opacity: 0;
  transition: opacity var(--transition-speed) ease;
  cursor: pointer;
}

.sidebar-overlay.visible {
  opacity: 1;
}

/* ------------------------------------------------------------
   7. Grid Helpers
   ------------------------------------------------------------ */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

/* -- Flex helpers ------------------------------------------- */
.flex {
  display: flex;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.flex-wrap {
  flex-wrap: wrap;
}

.gap-8 {
  gap: 8px;
}

.gap-12 {
  gap: 12px;
}

.gap-16 {
  gap: 16px;
}

.gap-24 {
  gap: 24px;
}

/* ------------------------------------------------------------
   8. Responsive Breakpoints
   ------------------------------------------------------------ */

/* -- Tablet: max-width 1024px ------------------------------- */
@media (max-width: 1024px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* -- Mobile: max-width 768px -------------------------------- */
@media (max-width: 768px) {
  /* Sidebar hidden off-screen */
  .sidebar {
    transform: translateX(calc(var(--sidebar-width) * -1));
    z-index: 1000;
  }

  /* Sidebar open state */
  .sidebar.open {
    transform: translateX(0);
  }

  /* Show overlay when sidebar is open */
  .sidebar-overlay {
    display: block;
  }

  /* Main content takes full width */
  .main-content {
    margin-left: 0;
  }

  /* Show hamburger button */
  .hamburger-btn {
    display: flex;
  }

  /* Topbar adjustments */
  .topbar {
    padding: 0 20px;
  }

  /* Page header stacks */
  .page-header {
    flex-direction: column;
    gap: 16px;
    margin-bottom: 24px;
  }

  .page-header-right {
    width: 100%;
    justify-content: flex-start;
  }

  /* Grid fallbacks */
  .grid-2 {
    grid-template-columns: 1fr;
  }

  .grid-3 {
    grid-template-columns: 1fr;
  }

  .grid-4 {
    grid-template-columns: 1fr;
  }

  /* Hide user name in topbar on mobile */
  .user-menu-name {
    display: none;
  }
}

/* -- Small mobile: max-width 640px -------------------------- */
@media (max-width: 640px) {
  .content-area {
    padding: 16px;
  }

  .topbar {
    padding: 0 16px;
  }

  .topbar-title {
    font-size: 16px;
  }

  .page-header-title {
    font-size: 20px;
  }

  .page-header-right {
    flex-wrap: wrap;
  }

  /* Stack grid items */
  .grid-2,
  .grid-3,
  .grid-4 {
    gap: 16px;
  }

  /* Language switcher compact */
  .language-switcher span:not(.language-switcher-flag) {
    display: none;
  }
}

/* ------------------------------------------------------------
   9. Print Styles
   ------------------------------------------------------------ */
@media print {
  .sidebar,
  .sidebar-overlay,
  .topbar,
  .hamburger-btn {
    display: none !important;
  }

  .main-content {
    margin-left: 0 !important;
  }

  .content-area {
    padding: 0 !important;
    max-width: 100% !important;
  }

  .app-layout {
    display: block;
  }
}

/* ------------------------------------------------------------
   10. Accessibility & Focus States
   ------------------------------------------------------------ */
.nav-item a:focus-visible,
a.nav-item:focus-visible,
.notification-bell:focus-visible,
.language-switcher:focus-visible,
.user-menu-trigger:focus-visible,
.hamburger-btn:focus-visible,
.sidebar-logout-btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .sidebar,
  .sidebar-overlay,
  .user-menu-dropdown,
  .user-menu-chevron,
  .nav-item a,
  a.nav-item {
    transition: none;
  }
}

/* ------------------------------------------------------------
   11. Scrollbar Utilities
   ------------------------------------------------------------ */
.custom-scrollbar {
  scrollbar-width: thin;
  scrollbar-color: #CBD5E1 transparent;
}

.custom-scrollbar::-webkit-scrollbar {
  width: 6px;
}

.custom-scrollbar::-webkit-scrollbar-track {
  background: transparent;
}

.custom-scrollbar::-webkit-scrollbar-thumb {
  background-color: #CBD5E1;
  border-radius: 3px;
}

.custom-scrollbar::-webkit-scrollbar-thumb:hover {
  background-color: #94A3B8;
}