/* ====================================
   БАЗОВЫЕ СТИЛИ
   MLM CRM v2.0
   ==================================== */

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.5;
  color: var(--text-primary);
  background: var(--bg-app);
  transition: background-color var(--transition), color var(--transition);
  overflow: hidden;
}

/* === LINKS === */
a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--accent-hover);
}

/* === BUTTONS === */
button {
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
  border: none;
  outline: none;
  background: none;
  transition: all var(--transition);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

/* === INPUTS === */
input,
select,
textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: var(--bg-input);
  border: 1px solid var(--border);
  outline: none;
  transition: all var(--transition);
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-light);
}

input::placeholder,
textarea::placeholder {
  color: var(--text-muted);
}

/* === SCROLLBAR === */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-app);
}

::-webkit-scrollbar-thumb {
  background: var(--text-muted);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}

/* === SELECTION === */
::selection {
  background: var(--accent);
  color: var(--text-inverse);
}

/* === LAYOUT === */
#app {
  display: flex;
  height: 100vh;
  width: 100vw;
  overflow: hidden;
}

/* === NAVIGATION RAIL === */
.nav-rail {
  width: 80px;
  background: var(--bg-card);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--spacing-md) 0;
  gap: var(--spacing-sm);
  transition: all var(--transition);
  z-index: var(--z-sticky);
}

.nav-logo {
  font-size: 28px;
  color: var(--accent);
  margin-bottom: var(--spacing-lg);
  padding: var(--spacing-sm);
}

.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: var(--spacing-sm) var(--spacing);
  border-radius: var(--radius);
  color: var(--text-secondary);
  font-size: var(--font-size-xs);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  width: 100%;
  text-align: center;
}

.nav-item i {
  font-size: 20px;
  transition: all var(--transition);
}

.nav-item:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.nav-item:hover i {
  color: var(--accent);
}

.nav-item.active {
  background: var(--accent-light);
  color: var(--accent);
}

.nav-item.active i {
  color: var(--accent);
}

.nav-spacer {
  flex: 1;
}

/* === MAIN CONTENT === */
.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--bg-app);
}

/* === HEADER === */
.main-header {
  height: 64px;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--spacing-xl);
  gap: var(--spacing-lg);
}

.header-left {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  min-width: 200px;
}

.mobile-menu-btn {
  display: none;
  padding: var(--spacing-sm);
  border-radius: var(--radius);
  color: var(--text-secondary);
}

.mobile-menu-btn:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.page-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text-primary);
}

.header-center {
  flex: 1;
  max-width: 600px;
  display: flex;
  justify-content: center;
}

.search-wrapper {
  position: relative;
  width: 100%;
  max-width: 500px;
}

.search-wrapper i {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 16px;
  pointer-events: none;
}

.search-input {
  width: 100%;
  padding: 10px 16px 10px 44px;
  border-radius: var(--radius-full);
  background: var(--bg-input);
  border: 1px solid var(--border);
  font-size: var(--font-size-sm);
  transition: all var(--transition);
}

.search-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-light);
}

.search-clear {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  padding: 4px 8px;
  border-radius: var(--radius-full);
  color: var(--text-muted);
  font-size: 14px;
}

.search-clear:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.header-right {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  min-width: 200px;
  justify-content: flex-end;
}

.user-profile {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-hover);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition);
}

.user-profile:hover {
  background: var(--bg-hover);
}

.user-profile i {
  font-size: 24px;
  color: var(--accent);
}

.user-name {
  font-weight: 500;
  font-size: var(--font-size-sm);
}

/* === PAGE CONTENT === */
.page-content {
  flex: 1;
  overflow: auto;
  padding: var(--spacing-xl);
}

/* === LOADING STATES === */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 200px;
  color: var(--text-muted);
  font-size: var(--font-size-lg);
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* === EMPTY STATES === */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 300px;
  color: var(--text-muted);
  text-align: center;
}

.empty-state i {
  font-size: 64px;
  margin-bottom: var(--spacing-lg);
  opacity: 0.5;
}

.empty-state h3 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-sm);
  color: var(--text-secondary);
}

.empty-state p {
  font-size: var(--font-size-sm);
  max-width: 400px;
}

/* === UTILITY CLASSES === */
.text-center {
  text-align: center;
}

.text-right {
  text-align: right;
}

.text-muted {
  color: var(--text-muted);
}

.text-secondary {
  color: var(--text-secondary);
}

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

.text-success {
  color: var(--success);
}

.text-danger {
  color: var(--danger);
}

.text-warning {
  color: var(--warning);
}

.fw-bold {
  font-weight: 600;
}

.d-none {
  display: none !important;
}

.d-flex {
  display: flex;
}

.flex-1 {
  flex: 1;
}

.items-center {
  align-items: center;
}

.justify-between {
  justify-content: space-between;
}

.gap-sm {
  gap: var(--spacing-sm);
}

.gap-md {
  gap: var(--spacing-md);
}

.gap-lg {
  gap: var(--spacing-lg);
}

.mt-sm {
  margin-top: var(--spacing-sm);
}

.mt-md {
  margin-top: var(--spacing-md);
}

.mt-lg {
  margin-top: var(--spacing-lg);
}

.mb-sm {
  margin-bottom: var(--spacing-sm);
}

.mb-md {
  margin-bottom: var(--spacing-md);
}

.mb-lg {
  margin-bottom: var(--spacing-lg);
}

/* === HIDDEN ON MOBILE === */
@media (max-width: 768px) {
  .hide-mobile {
    display: none !important;
  }
}