/* ========================================
   Header
   ======================================== */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: var(--color-primary);
  z-index: var(--z-sticky);
  transition: box-shadow var(--transition-base), background var(--transition-base);
}

.header--scrolled {
  box-shadow: var(--shadow-lg);
  background: rgba(10, 31, 63, 0.97);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  color: var(--color-white);
  text-decoration: none;
  flex-shrink: 0;
}

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

.header__logo img {
  height: 36px;
  width: auto;
}

.header__nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
}

.header__nav-link {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  position: relative;
  padding: var(--spacing-xs) 0;
  transition: color var(--transition-fast);
}

.header__nav-link:hover {
  color: var(--color-white);
  text-decoration: none;
}

.header__nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-accent);
  transform: scaleX(0);
  transition: transform var(--transition-base);
}

.header__nav-link:hover::after,
.header__nav-link.is-active::after {
  transform: scaleX(1);
}

.header__actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

/* Burger Menu */
.header__burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 28px;
  height: 28px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
}

.header__burger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-white);
  border-radius: 2px;
  transition: all var(--transition-base);
}

.header__burger.is-open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.header__burger.is-open span:nth-child(2) {
  opacity: 0;
}

.header__burger.is-open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ========================================
   Footer
   ======================================== */

.footer {
  background: var(--color-primary-dark);
  color: rgba(255, 255, 255, 0.7);
  padding: var(--spacing-3xl) 0 var(--spacing-lg);
  margin-top: auto;
}

.footer__inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-xl);
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.footer__col {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer__title {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-white);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-sm);
}

.footer__link {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.6);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--color-accent-light);
  text-decoration: none;
}

.footer__bottom {
  max-width: var(--container-max);
  margin: var(--spacing-xl) auto 0;
  padding: var(--spacing-lg) var(--spacing-lg) 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.4);
}

/* ========================================
   Hero
   ======================================== */

.hero {
  width: 100%;
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-primary) 0%, #2C3E50 100%);
  padding: var(--spacing-4xl) var(--spacing-lg);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 20% 50%, rgba(20, 168, 158, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: var(--container-narrow);
}

.hero__title {
  font-size: var(--text-5xl);
  font-weight: var(--weight-extrabold);
  color: var(--color-white);
  line-height: var(--leading-tight);
  margin-bottom: var(--spacing-lg);
}

.hero__subtitle {
  font-size: var(--text-lg);
  color: rgba(255, 255, 255, 0.75);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--spacing-xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero__actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

/* ========================================
   Quick Actions
   ======================================== */

.quick-actions {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.quick-action-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  padding: var(--spacing-2xl) var(--spacing-lg);
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-base);
  text-align: center;
  min-height: 160px;
}

.quick-action-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: var(--color-accent);
}

.quick-action-card__icon {
  width: 48px;
  height: 48px;
  color: var(--color-accent);
}

.quick-action-card__label {
  font-size: var(--text-base);
  font-weight: var(--weight-medium);
  color: var(--color-text);
}

/* ========================================
   Sections
   ======================================== */

.section {
  padding: var(--spacing-4xl) 0;
}

.section__title {
  font-size: var(--text-3xl);
  font-weight: var(--weight-bold);
  color: var(--color-text);
  text-align: center;
  margin-bottom: var(--spacing-sm);
}

.section__subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  text-align: center;
  max-width: 600px;
  margin: 0 auto var(--spacing-3xl);
}

.section--debt {
  background: var(--color-bg);
}

.section--partners {
  background: var(--color-white);
}

.section--about {
  background: var(--color-bg-alt);
}

.section--contacts {
  background: var(--color-white);
}

.section--dark {
  background: var(--color-primary);
  color: var(--color-white);
}

.section--dark .section__title {
  color: var(--color-white);
}

.section--dark .section__subtitle {
  color: rgba(255, 255, 255, 0.7);
}

.section--light {
  background: var(--color-white);
}

/* ========================================
   Sidebar (App)
   ======================================== */

.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--sidebar-width);
  background: var(--color-white);
  border-right: 1px solid var(--color-border-light);
  z-index: var(--z-sticky);
  display: flex;
  flex-direction: column;
  transition: width var(--transition-base);
  overflow: hidden;
}

.sidebar--collapsed {
  width: var(--sidebar-collapsed);
}

.sidebar__header {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-lg);
  height: var(--topbar-height);
  border-bottom: 1px solid var(--color-border-light);
  flex-shrink: 0;
}

.sidebar__nav {
  flex: 1;
  overflow-y: auto;
  padding: var(--spacing-sm) 0;
}

.sidebar__link {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.sidebar__link:hover {
  background: var(--color-bg);
  color: var(--color-primary);
  text-decoration: none;
}

.sidebar__link.is-active {
  background: rgba(20, 168, 158, 0.08);
  color: var(--color-accent);
  font-weight: var(--weight-semibold);
}

.sidebar__icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  color: inherit;
}

.sidebar__label {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar--collapsed .sidebar__label {
  display: none;
}

.sidebar--collapsed .sidebar__header {
  justify-content: center;
  padding: var(--spacing-md);
}

.sidebar__submenu {
  padding-left: var(--spacing-xl);
}

.sidebar__submenu .sidebar__link {
  font-size: var(--text-xs);
  padding-top: 6px;
  padding-bottom: 6px;
}

/* ========================================
   Topbar
   ======================================== */

.topbar {
  position: fixed;
  top: 0;
  left: var(--sidebar-width);
  right: 0;
  height: var(--topbar-height);
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border-light);
  z-index: var(--z-sticky);
  display: flex;
  align-items: center;
  padding: 0 var(--spacing-lg);
  transition: left var(--transition-base);
}

.sidebar--collapsed + .topbar {
  left: var(--sidebar-collapsed);
}

.topbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.topbar__title {
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
  color: var(--color-text);
}

.topbar__actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.topbar__notif {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--color-text-secondary);
  transition: background var(--transition-fast);
}

.topbar__notif:hover {
  background: var(--color-bg-alt);
}

.topbar__notif-badge {
  position: absolute;
  top: 4px;
  right: 4px;
  min-width: 16px;
  height: 16px;
  padding: 0 4px;
  font-size: 10px;
  font-weight: var(--weight-bold);
  color: var(--color-white);
  background: var(--color-error);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

/* ========================================
   Content Area
   ======================================== */

.content {
  margin-left: var(--sidebar-width);
  padding: var(--spacing-lg);
  min-height: 100vh;
  transition: margin-left var(--transition-base);
}

.sidebar--collapsed ~ .content {
  margin-left: var(--sidebar-collapsed);
}

.content--full {
  margin-left: 0;
}

/* ========================================
   Grid System (12-column)
   ======================================== */

.row {
  display: flex;
  flex-wrap: wrap;
  margin-left: calc(-1 * var(--spacing-md));
  margin-right: calc(-1 * var(--spacing-md));
}

.row--nogutter {
  margin-left: 0;
  margin-right: 0;
}

.row--nogutter > [class*="col-"] {
  padding-left: 0;
  padding-right: 0;
}

[class*="col-"] {
  padding-left: var(--spacing-md);
  padding-right: var(--spacing-md);
  box-sizing: border-box;
}

.col-1  { width: 8.3333%; }
.col-2  { width: 16.6667%; }
.col-3  { width: 25%; }
.col-4  { width: 33.3333%; }
.col-5  { width: 41.6667%; }
.col-6  { width: 50%; }
.col-7  { width: 58.3333%; }
.col-8  { width: 66.6667%; }
.col-9  { width: 75%; }
.col-10 { width: 83.3333%; }
.col-11 { width: 91.6667%; }
.col-12 { width: 100%; }

@media (max-width: 1024px) {
  .col-md-1  { width: 8.3333%; }
  .col-md-2  { width: 16.6667%; }
  .col-md-3  { width: 25%; }
  .col-md-4  { width: 33.3333%; }
  .col-md-5  { width: 41.6667%; }
  .col-md-6  { width: 50%; }
  .col-md-7  { width: 58.3333%; }
  .col-md-8  { width: 66.6667%; }
  .col-md-9  { width: 75%; }
  .col-md-10 { width: 83.3333%; }
  .col-md-11 { width: 91.6667%; }
  .col-md-12 { width: 100%; }
}

@media (max-width: 768px) {
  .col-sm-1  { width: 8.3333%; }
  .col-sm-2  { width: 16.6667%; }
  .col-sm-3  { width: 25%; }
  .col-sm-4  { width: 33.3333%; }
  .col-sm-5  { width: 41.6667%; }
  .col-sm-6  { width: 50%; }
  .col-sm-7  { width: 58.3333%; }
  .col-sm-8  { width: 66.6667%; }
  .col-sm-9  { width: 75%; }
  .col-sm-10 { width: 83.3333%; }
  .col-sm-11 { width: 91.6667%; }
  .col-sm-12 { width: 100%; }
}

/* ========================================
   Page Header
   ======================================== */

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--color-border-light);
}

.page-header__title {
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  color: var(--color-text);
  margin: 0;
}

.page-header__actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

/* ========================================
   Login Page
   ======================================== */

.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: var(--spacing-lg);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
}

.login-card {
  width: 100%;
  max-width: 420px;
  background: var(--color-white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  padding: var(--spacing-2xl);
}

.login-tabs {
  display: flex;
  margin-bottom: var(--spacing-xl);
  border-bottom: 2px solid var(--color-border-light);
}

.login-tabs__btn {
  flex: 1;
  padding: var(--spacing-sm) var(--spacing-md);
  font-family: var(--font-primary);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-muted);
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
}

.login-tabs__btn:hover {
  color: var(--color-text);
}

.login-tabs__btn.is-active {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

/* ========================================
   Support Layout
   ======================================== */

.support-layout {
  display: flex;
  min-height: calc(100vh - var(--header-height));
  margin-top: var(--header-height);
}

.support-sidebar {
  width: var(--sidebar-width);
  background: var(--color-white);
  border-right: 1px solid var(--color-border-light);
  flex-shrink: 0;
  padding: var(--spacing-lg) 0;
}

.support-content {
  flex: 1;
  padding: var(--spacing-xl);
  background: var(--color-bg);
}

/* ========================================
   Admin Layout
   ======================================== */

.admin-layout {
  display: flex;
  min-height: 100vh;
}

.admin-sidebar {
  width: var(--sidebar-width);
  background: var(--color-primary);
  color: var(--color-white);
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: var(--z-sticky);
  transition: width var(--transition-base), transform var(--transition-base);
}

.admin-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  background: var(--color-bg);
  min-height: 100vh;
  transition: margin-left var(--transition-base);
}

/* ========================================
   Cabinet Layout
   ======================================== */

.cabinet-layout {
  display: flex;
  min-height: calc(100vh - var(--header-height));
  margin-top: var(--header-height);
}

.cabinet-sidebar {
  width: var(--sidebar-width);
  background: var(--color-bg-alt);
  border-right: 1px solid var(--color-border-light);
  flex-shrink: 0;
  padding: var(--spacing-lg) 0;
}

.cabinet-content {
  flex: 1;
  padding: var(--spacing-xl);
  background: var(--color-white);
}

/* ========================================
   Responsive
   ======================================== */

@media (max-width: 1024px) {
  .header__nav {
    display: none;
  }

  .header__burger {
    display: flex;
  }

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

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

  .admin-sidebar {
    transform: translateX(-100%);
  }

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

  .admin-content {
    margin-left: 0;
  }

  .sidebar {
    transform: translateX(-100%);
  }

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

  .content {
    margin-left: 0;
  }

  .topbar {
    left: 0;
  }

  .support-sidebar {
    display: none;
  }

  .support-sidebar.is-open {
    display: block;
    position: fixed;
    top: var(--header-height);
    left: 0;
    bottom: 0;
    z-index: var(--z-overlay);
  }
}

@media (max-width: 768px) {
  .hero__title {
    font-size: var(--text-3xl);
  }

  .hero__subtitle {
    font-size: var(--text-base);
  }

  .quick-actions {
    grid-template-columns: 1fr;
  }

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

  .login-card {
    padding: var(--spacing-lg);
  }

  .page-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .cabinet-sidebar {
    display: none;
  }

  .cabinet-sidebar.is-open {
    display: block;
    position: fixed;
    top: var(--header-height);
    left: 0;
    bottom: 0;
    z-index: var(--z-overlay);
    width: var(--sidebar-width);
  }
}