/**
 * Стили основного интерфейса Label Studio Pro
 */

:root {
  --bg-primary: #0f1117;
  --bg-secondary: #1a1d27;
  --bg-tertiary: #242938;
  --bg-card: #1f2330;
  --text-main: #f0f2f5;
  --text-muted: #9aa2b1;
  --text-dim: #656d81;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-light: rgba(37, 99, 235, 0.15);
  --success: #10b981;
  --success-bg: rgba(16, 185, 129, 0.15);
  --danger: #ef4444;
  --danger-hover: #dc2626;
  --warning: #f59e0b;
  --border-color: #2e3446;
  --border-focus: #3b82f6;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.5);
  --sidebar-w: 440px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.18) transparent;
}

/* ==========================================================================
   КАСТОМНЫЙ СКРОЛЛБАР В СТИЛЕ LABEL STUDIO PRO
   ========================================================================== */
::-webkit-scrollbar {
  width: 7px;
  height: 7px;
}

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

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.16);
  border-radius: 999px;
  border: 1.5px solid transparent;
  background-clip: padding-box;
  transition: background-color 0.2s ease, box-shadow 0.2s ease;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.32);
  background-clip: padding-box;
}

::-webkit-scrollbar-thumb:active {
  background: var(--accent);
  background-clip: padding-box;
}

::-webkit-scrollbar-corner {
  background: transparent;
}

/* Специфический скроллбар для рабочего холста (.canvas-viewport) */
.canvas-viewport {
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.25) rgba(20, 23, 33, 0.7);
}

.canvas-viewport::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

.canvas-viewport::-webkit-scrollbar-track {
  background: rgba(20, 23, 33, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.04);
}

.canvas-viewport::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.22);
  border-radius: 999px;
  border: 2px solid transparent;
  background-clip: padding-box;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.05);
  transition: background-color 0.2s ease, box-shadow 0.2s ease;
}

.canvas-viewport::-webkit-scrollbar-thumb:hover {
  background: #3b82f6;
  background-clip: padding-box;
  box-shadow: 0 0 8px rgba(59, 130, 246, 0.45);
}

.canvas-viewport::-webkit-scrollbar-thumb:active {
  background: #2563eb;
  background-clip: padding-box;
  box-shadow: 0 0 12px rgba(37, 99, 235, 0.65);
}

.canvas-viewport::-webkit-scrollbar-corner {
  background: #141721;
}

/* Компактный деликатный скроллбар для панелей управления и модалок */
.sidebar-content,
.modal-body,
.sidebar-tabs {
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.15) transparent;
}

.sidebar-content::-webkit-scrollbar,
.modal-body::-webkit-scrollbar,
.sidebar-tabs::-webkit-scrollbar {
  width: 5px;
  height: 5px;
}

.sidebar-content::-webkit-scrollbar-thumb,
.modal-body::-webkit-scrollbar-thumb,
.sidebar-tabs::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.15);
  border-radius: 999px;
  border: 1px solid transparent;
  background-clip: padding-box;
}

.sidebar-content::-webkit-scrollbar-thumb:hover,
.modal-body::-webkit-scrollbar-thumb:hover,
.sidebar-tabs::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.3);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Inter", "Segoe UI", Roboto, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-main);
  height: 100vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

/* ==========================================================================
   HEADER
   ========================================================================== */
.app-header {
  height: 56px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  flex-shrink: 0;
  z-index: 20;
}

.brand-section {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, #3b82f6, #1d4ed8);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  box-shadow: 0 2px 10px rgba(59, 130, 246, 0.4);
}

.brand-title {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.brand-subtitle {
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 400;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* ==========================================================================
   BUTTONS & INPUTS
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 14px;
  font-size: 13px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s ease;
  user-select: none;
  font-family: inherit;
}

.btn-primary {
  background: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
}

.btn-primary:hover {
  background: var(--accent-hover);
}

.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-main);
  border-color: var(--border-color);
}

.btn-secondary:hover {
  background: #2e3547;
  border-color: #434c64;
}

.btn-danger {
  background: var(--danger);
  color: #fff;
}

.btn-danger:hover {
  background: var(--danger-hover);
}

.btn-sm {
  padding: 4px 8px;
  font-size: 11px;
}

.btn-icon {
  width: 32px;
  height: 32px;
  padding: 0;
  border-radius: var(--radius-sm);
}

.form-group {
  margin-bottom: 14px;
}

.form-group.row-group {
  display: flex;
  gap: 10px;
}

.form-group.row-group > * {
  flex: 1;
}

.form-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.form-control {
  width: 100%;
  height: 36px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0 10px;
  font-size: 13px;
  color: var(--text-main);
  font-family: inherit;
  transition: border-color 0.15s ease;
}

.form-control:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

textarea.form-control {
  height: auto;
  min-height: 80px;
  padding: 8px 10px;
  resize: vertical;
  line-height: 1.4;
}

.input-with-action {
  display: flex;
  gap: 6px;
}

.input-with-action .form-control {
  flex: 1;
}

.input-badge {
  font-size: 10px;
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 600;
}

.input-badge.valid {
  background: var(--success-bg);
  color: var(--success);
}

.input-badge.invalid {
  background: rgba(239, 68, 68, 0.15);
  color: var(--danger);
}

/* ==========================================================================
   APP MAIN (SPLIT VIEW)
   ========================================================================== */
.app-main {
  display: flex;
  flex: 1;
  height: calc(100vh - 56px);
  overflow: hidden;
}

/* ЛЕВАЯ ПАНЕЛЬ (SIDEBAR) */
.app-sidebar {
  width: var(--sidebar-w);
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  z-index: 10;
}

/* Табы навигации */
.sidebar-tabs {
  display: flex;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  padding: 4px 6px;
  gap: 4px;
  overflow-x: auto;
}

.tab-btn {
  flex: 1;
  padding: 8px 4px;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  white-space: nowrap;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  transition: all 0.15s ease;
}

.tab-btn:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.05);
}

.tab-btn.active {
  color: #fff;
  background: var(--accent);
}

.sidebar-content {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
}

.tab-pane {
  display: none;
}

.tab-pane.active {
  display: block;
}

.section-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 14px;
  margin-bottom: 16px;
}

.section-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* ==========================================================================
   ПРАВАЯ ПАНЕЛЬ (CANVAS WORKSPACE)
   ========================================================================== */
.canvas-workspace {
  flex: 1;
  background: #141721;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

/* Панель инструментов предпросмотра */
.canvas-toolbar {
  height: 48px;
  background: rgba(26, 29, 39, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  z-index: 5;
}

.toolbar-group {
  display: flex;
  align-items: center;
  gap: 8px;
}

.zoom-indicator {
  font-size: 12px;
  font-weight: 600;
  min-width: 48px;
  text-align: center;
  cursor: pointer;
  user-select: none;
  transition: color 0.15s ease;
}

.zoom-indicator:hover {
  color: var(--accent-color);
}

/* Холст отображения */
.canvas-viewport {
  flex: 1;
  overflow: auto;
  display: block; /* Предотвращает отсечение контента (scroll clipping) flexbox-контейнером */
  padding: 0;
  position: relative;
  background-image: 
    radial-gradient(circle at 1px 1px, rgba(255, 255, 255, 0.05) 1px, transparent 0);
  background-size: 24px 24px;
  cursor: default;
}

.canvas-viewport.is-dragging {
  cursor: grabbing !important;
  user-select: none;
}

/* Сцена для масштабирования наклейки (размеры и отступы рассчитываются динамически) */
.canvas-stage {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-sizing: border-box;
  position: relative;
}

/* Область наклейки на холсте */
.sticker-mount-point {
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.7), 0 0 0 1px rgba(255, 255, 255, 0.1);
  transition: transform 0.15s cubic-bezier(0.16, 1, 0.3, 1);
  transform-origin: center center;
  background-color: #fff;
  flex-shrink: 0;
}

.dimensions-badge {
  position: absolute;
  bottom: 16px;
  right: 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  box-shadow: var(--shadow-sm);
  pointer-events: none;
  z-index: 10;
}

/* ==========================================================================
   MODAL WINDOWS
   ========================================================================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 20px;
}

.modal-overlay.active {
  display: flex;
}

.modal-card {
  width: 100%;
  max-width: 580px;
  max-height: 90vh;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: modalFadeIn 0.2s ease-out;
}

.modal-card.modal-lg {
  max-width: 980px;
  max-height: 94vh;
}

@keyframes modalFadeIn {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

.modal-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 15px;
  font-weight: 700;
}

.modal-body {
  padding: 20px;
  overflow-y: auto;
  flex: 1;
}

.modal-body textarea {
  resize: none !important;
}

.modal-footer {
  padding: 14px 20px;
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
}

/* ==========================================================================
   TOASTS (СПРАВА ВНИЗУ)
   ========================================================================== */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 8px;
  z-index: 9999;
  pointer-events: none;
  max-width: 380px;
}

.toast {
  background: #1e293b;
  color: #fff;
  border: 1px solid #334155;
  padding: 10px 18px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 500;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
  animation: toastInRight 0.25s ease-out;
  pointer-events: auto;
}

@keyframes toastInRight {
  from { opacity: 0; transform: translateX(30px); }
  to { opacity: 1; transform: translateX(0); }
}

/* ==========================================================================
   ПРЕСЕТЫ ОТТЕНКА БУМАГИ (ПОД КОРОБКИ APPLE)
   ========================================================================== */
.btn-color-preset {
  transition: all 0.2s ease;
}
.btn-color-preset:hover {
  background: #242938 !important;
  border-color: #3b82f6 !important;
}
.btn-color-preset.active {
  background: rgba(37, 99, 235, 0.2) !important;
  border-color: #3b82f6 !important;
  box-shadow: 0 0 0 1px #3b82f6;
}

/* ==========================================================================
   ТУМБЛЕР-ПЕРЕКЛЮЧАТЕЛЬ РАЗМЕРА ШРИФТА (4.19 pt сток / 4.55 pt увеличенный)
   ========================================================================== */
.font-toggle-widget {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 3px 10px;
  user-select: none;
  cursor: pointer;
  margin-left: 8px;
  transition: all 0.2s ease;
}

.font-toggle-widget:hover {
  border-color: #4b5563;
  background: rgba(255, 255, 255, 0.05);
}

.font-toggle-label {
  font-size: 11px;
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.font-toggle-label:hover {
  color: #e5e7eb;
}

.font-toggle-label.active {
  color: #60a5fa !important;
  font-weight: 700;
}

.switch-track {
  width: 32px;
  height: 18px;
  background: #374151;
  border-radius: 10px;
  position: relative;
  transition: background-color 0.22s ease;
  flex-shrink: 0;
  cursor: pointer;
}

.switch-track.active {
  background: #2563eb !important;
}

.switch-thumb {
  width: 14px;
  height: 14px;
  background: #ffffff;
  border-radius: 50%;
  position: absolute;
  top: 2px;
  left: 2px;
  transition: transform 0.22s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
}

.switch-track.active .switch-thumb {
  transform: translateX(14px);
}