/**
 * KLIMOV RED Design System — Base Styles
 *
 * Reset, typography, base elements, layout
 */

/* ========================================
   RESET
   ======================================== */

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

* {
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  min-height: 100vh;
  color: var(--text-primary);
  background: var(--background);
}

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
}

input,
button,
textarea,
select {
  font: inherit;
  color: inherit;
}

select {
  background-color: var(--background);
  color: var(--text-primary);
}

select option {
  background-color: var(--surface-primary);
  color: var(--text-primary);
}

button {
  cursor: pointer;
  background: none;
  border: none;
}

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

/* Подчёркивание только для текстовых ссылок в контенте, НЕ для навигации/кнопок */
p a:hover,
td a:hover,
.content a:hover,
.prose a:hover {
  text-decoration: underline;
}

/* Интерактивные элементы НИКОГДА не подчёркиваются */
.btn:hover,
.nav-link:hover,
.nav-dropdown-item:hover,
.nav-dropdown-trigger:hover,
[class*="btn"]:hover,
[role="button"]:hover,
button a:hover {
  text-decoration: none;
}

ul,
ol {
  list-style: none;
}

table {
  border-collapse: collapse;
  border-spacing: 0;
}

/* Number input spinners: always visible, proper contrast */
input[type="number"] {
  color-scheme: light dark;
}
input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
  opacity: 1;
}

/* ========================================
   TYPOGRAPHY
   ======================================== */

h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  color: var(--text-primary);
}

h1 { font-size: var(--font-size-3xl); }
h2 { font-size: var(--font-size-2xl); }
h3 { font-size: var(--font-size-xl); }
h4 { font-size: var(--font-size-lg); }
h5 { font-size: var(--font-size-md); }
h6 { font-size: var(--font-size-base); }

p {
  margin-bottom: var(--spacing-4);
}

small {
  font-size: var(--font-size-sm);
}

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  padding: 2px 6px;
  background: var(--surface-secondary);
  border-radius: var(--radius-xs);
}

pre {
  font-family: var(--font-mono);
  padding: var(--spacing-4);
  background: var(--surface-secondary);
  border-radius: var(--radius-md);
  overflow-x: auto;
}

blockquote {
  padding-left: var(--spacing-4);
  border-left: 4px solid var(--primary);
  color: var(--text-muted);
  font-style: italic;
}

/* ========================================
   LAYOUT CONTAINERS
   ======================================== */

.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-4);
}

.container-sm { max-width: 640px; }
.container-md { max-width: 768px; }
.container-lg { max-width: 1024px; }
.container-xl { max-width: 1280px; }
.container-2xl { max-width: 1536px; }

/* ========================================
   CARDS
   ======================================== */

.card {
  background: var(--surface-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-4);
}

.card-header {
  padding-bottom: var(--spacing-3);
  margin-bottom: var(--spacing-3);
  border-bottom: 1px solid var(--border);
}

.card-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
}

.card-body {
  flex: 1;
}

.card-footer {
  padding-top: var(--spacing-3);
  margin-top: var(--spacing-3);
  border-top: 1px solid var(--border);
}

/* ========================================
   NAVIGATION
   ======================================== */

.nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-2) var(--spacing-3);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.nav-link:hover {
  background: var(--surface-secondary);
  text-decoration: none;
}

.nav-link.active {
  color: var(--primary);
  background: var(--primary-muted);
}

/* ========================================
   DIVIDERS
   ======================================== */

.divider {
  height: 1px;
  background: var(--border);
  margin: var(--spacing-4) 0;
}

.divider-vertical {
  width: 1px;
  height: 100%;
  background: var(--border);
  margin: 0 var(--spacing-4);
}

/* ========================================
   EMPTY STATE
   ======================================== */

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-8);
  text-align: center;
  color: var(--text-muted);
}

.empty-state-icon {
  font-size: 48px;
  margin-bottom: var(--spacing-4);
  opacity: 0.5;
}

.empty-state-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin-bottom: var(--spacing-2);
}

.empty-state-description {
  font-size: var(--font-size-sm);
  max-width: 320px;
}

/* ========================================
   LOADING STATES
   ======================================== */

.loading {
  opacity: 0.6;
  pointer-events: none;
}

.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border);
  border-top-color: var(--primary);
  border-radius: var(--radius-full);
  animation: spin 0.8s linear infinite;
}

.animate-spin {
  animation: spin 1s linear infinite;
}

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

/* ========================================
   HTMX LOADING
   ======================================== */

.htmx-request {
  opacity: 0.6;
  pointer-events: none;
}

.htmx-request .spinner {
  display: inline-block;
}

/* ========================================
   ANIMATIONS
   ======================================== */

@keyframes fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slide-up {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slide-down {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-in { animation: fade-in 0.2s ease; }
.animate-slide-up { animation: slide-up 0.2s ease; }
.animate-slide-down { animation: slide-down 0.2s ease; }

/* Row highlight for new records */
@keyframes highlight-row {
  0% { background-color: var(--primary-muted); }
  100% { background-color: transparent; }
}

.highlight-new {
  animation: highlight-row 2s ease-out;
}

/* ========================================
   SCROLLBAR
   ======================================== */

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--surface-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: var(--radius-full);
}

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

/* ========================================
   FOCUS STATES
   ======================================== */

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

/* ========================================
   SELECTION
   ======================================== */

::selection {
  background: var(--primary-muted);
  color: var(--text-primary);
}