* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg: #f8fafc; /* Более светлый и чистый фон */
  --panel: #ffffff;
  --border: #e2e8f0;
  --text: #0f172a;
  --muted: #64748b;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --accent-light: #eff6ff;
  --danger: #ef4444;
  --danger-bg: #fef2f2;
  --danger-border: #fca5a5;
  --column-bg: #f1f5f9;
  --column-width: 300px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

.hidden { display: none !important; }

/* --- Логин --- */
.login-view {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 16px;
  background: linear-gradient(135deg, #f0f4f8 0%, #e2e8f0 100%);
}

.login-card {
  background: var(--panel);
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 400px;
  max-width: 100%;
  padding: 40px 32px;
}

.login-header {
  text-align: center;
  margin-bottom: 32px;
}

.login-card h1 {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: 8px;
  color: #1e293b;
}

.login-subtitle {
  color: var(--muted);
  font-size: 14px;
}

.login-card label {
  display: block;
  margin-bottom: 20px;
}

.login-card label span {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: #475569;
  margin-bottom: 8px;
}

.login-card input {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 15px;
  transition: all 0.2s ease;
  background: #f8fafc;
}

.login-card input:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--panel);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.login-card button {
  width: 100%;
  margin-top: 8px;
  padding: 12px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.2s ease, transform 0.1s ease;
}

.login-card button:hover {
  background: var(--accent-hover);
}

.login-card button:active {
  transform: translateY(1px);
}

.login-error {
  background: var(--danger-bg);
  color: var(--danger);
  border: 1px solid var(--danger-border);
  border-radius: var(--radius-sm);
  padding: 12px;
  font-size: 14px;
  margin-bottom: 20px;
  text-align: center;
}

/* --- Шапка доски --- */
.board-view {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 24px;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.topbar-left, .topbar-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo {
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.5px;
  background: linear-gradient(90deg, #1e293b, var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.divider { color: var(--border); }

.form-label {
  color: #334155;
  font-size: 15px;
  font-weight: 500;
}

.project-label {
  background: var(--accent-light);
  color: var(--accent-hover);
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  border: 1px solid #bfdbfe;
}

.user-profile {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-right: 12px;
}

.avatar-sm {
  width: 28px;
  height: 28px;
  background: linear-gradient(135deg, #3b82f6, #8b5cf6);
  border-radius: 50%;
}

.user-label {
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
}

.btn {
  padding: 8px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--panel);
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: var(--shadow-sm);
}

.btn:hover {
  background: #f8fafc;
  border-color: #cbd5e1;
}

.btn-ghost {
  box-shadow: none;
  background: transparent;
  border-color: transparent;
  color: var(--muted);
}

.btn-ghost:hover {
  background: #f1f5f9;
  color: var(--text);
}

/* --- Табы досок --- */
.board-tabs {
  display: flex;
  gap: 24px;
  padding: 0 24px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
}

.board-tabs .tab {
  padding: 16px 4px;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--muted);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.board-tabs .tab:hover { color: var(--text); }

.board-tabs .tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* --- Доска --- */
.board {
  flex: 1;
  display: flex;
  gap: 20px;
  align-items: flex-start;
  padding: 24px;
  overflow-x: auto;
}

/* Кастомный скроллбар */
::-webkit-scrollbar { height: 8px; width: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #94a3b8; }

.board-loading, .board-error {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 24px;
  padding: 16px 20px;
  border-radius: var(--radius-md);
  font-size: 15px;
}

.board-loading { color: var(--muted); background: var(--panel); border: 1px solid var(--border); }
.board-error { background: var(--danger-bg); color: var(--danger); border: 1px solid var(--danger-border); }

/* Спиннер загрузки */
.spinner {
  width: 18px;
  height: 18px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* --- Колонки --- */
.column {
  background: var(--column-bg);
  border-radius: var(--radius-md);
  width: var(--column-width);
  min-width: var(--column-width);
  display: flex;
  flex-direction: column;
  max-height: calc(100vh - 150px);
  border: 1px solid #e2e8f0;
}

.column-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px;
  font-weight: 600;
  font-size: 14px;
  color: #334155;
}

.column-count {
  background: #e2e8f0;
  color: #475569;
  border-radius: 999px;
  padding: 2px 10px;
  font-size: 12px;
  font-weight: 600;
}

.column-tasks {
  overflow-y: auto;
  padding: 0 16px 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.column-empty {
  color: #94a3b8;
  font-size: 13px;
  text-align: center;
  padding: 32px 16px;
  border: 2px dashed #cbd5e1;
  border-radius: var(--radius-sm);
}

/* --- Карточка задачи --- */
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  border-color: #cbd5e1;
}

.card-id {
  font-size: 12px;
  color: var(--muted);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.2s;
}

.card-id:hover {
  color: var(--accent);
}

.card-name {
  font-size: 14px;
  font-weight: 500;
  line-height: 1.5;
  color: var(--text);
  word-break: break-word;
}

.card-meta {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 12px;
  color: var(--muted);
}


.due-block {
  display: flex;
  align-items: center;
}

.due-block > svg {
  margin-top: -1px;
}

.card-meta .meta-due-overdue {
  color: var(--danger);
  font-weight: 600;
  background: var(--danger-bg);
  padding: 2px 6px;
  border-radius: 4px;
  width: fit-content;
}

.card-footer {
  margin-top: 4px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid #f1f5f9;
  padding-top: 12px;
}

.days-in-status {
  background: #f1f5f9;
  color: #64748b;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 500;
}

.card-create {
  color: #94a3b8;
  font-size: 11px;
}