/* ==========================================================================
   CSS SYSTEM - TASKFLOW
   ========================================================================== */

:root {
  /* Core Colors */
  --bg-body: hsl(40, 20%, 96%); /* #F4F2EC */
  --bg-panel: hsl(0, 0%, 100%);
  --border-light: hsl(40, 10%, 85%);
  
  --text-main: hsl(0, 0%, 12%);
  --text-muted: hsl(0, 0%, 40%);
  --text-light: hsl(0, 0%, 55%);
  
  /* Primary Hues */
  --primary: #3a833c; /* Verde scuro logo */
  --primary-hover: #2f6930;
  --primary-faded: #eaf3eb;
  
  /* Status Colors */
  --danger: #d43131; /* Rosso tenue per le eliminazioni/errori */
  --danger-bg: #fbeaea;
  --warning: #eb7c23; /* Arancio del logo */
  --warning-bg: #fdeee2;
  --success: #8cc641; /* Verde chiaro del logo */
  --success-bg: #f2f8eb;
  --info: #2185d0;
  --info-bg: #eaf4fc;

  /* Styling params */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-pill: 50px;
  
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.03);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.05);
  --shadow-lg: 0 10px 30px rgba(0,0,0,0.08);
  
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-blur: blur(12px);

  --font-family: 'Inter', system-ui, -apple-system, sans-serif;
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: var(--font-family);
  font-size: 14px;
  background-color: var(--bg-body);
  color: var(--text-main);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

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

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

.topbar {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--border-light);
  padding: 0 28px;
  height: 60px;
  display: flex;
  align-items: center;
  gap: 20px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.topbar-logo {
  font-size: 20px;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.5px;
  display: flex;
  align-items: center;
  gap: 8px;
}


.topbar-spacer { flex: 1; }

.topbar-user {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 500;
}

.avatar {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--primary-faded);
  color: var(--primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 700;
  border: 1px solid var(--border-light);
}

.layout { display: flex; min-height: calc(100vh - 60px); }

/* Sidebar */
.sidebar {
  width: 240px;
  background: var(--bg-panel);
  border-right: 1px solid var(--border-light);
  padding: 24px 0;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.nav-section {
  font-size: 11px;
  font-weight: 700;
  color: var(--text-light);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 16px 24px 8px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 24px;
  font-size: 14px;
  color: var(--text-muted);
  font-weight: 500;
  border-left: 3px solid transparent;
  transition: all var(--transition);
}

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

.nav-item.active {
  background: var(--primary-faded);
  color: var(--primary);
  font-weight: 600;
  border-left-color: var(--primary);
}

/* Main */
.main { flex: 1; padding: 32px 40px; overflow-x: hidden; }

.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 28px;
}

.page-title {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--text-main);
}

/* ==========================================================================
   CARDS & CONTAINERS
   ========================================================================== */

.card {
  background: var(--bg-panel);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}

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

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--bg-panel);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition);
}
.stat-card:hover { transform: translateY(-4px); }

.stat-label { font-size: 13px; font-weight: 600; color: var(--text-muted); margin-bottom: 8px; }
.stat-value { font-size: 32px; font-weight: 800; letter-spacing: -1px; }

/* ==========================================================================
   TABLES
   ========================================================================== */

.task-table { width: 100%; border-collapse: collapse; }

.task-table th {
  text-align: left;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 12px 16px;
  border-bottom: 2px solid var(--border-light);
}

.task-table td {
  padding: 16px;
  border-bottom: 1px solid var(--border-light);
  font-size: 14px;
  vertical-align: middle;
  transition: background var(--transition);
}

.task-table tr:hover td { background: var(--bg-body); }
.task-table tr:last-child td { border-bottom: none; }

/* ==========================================================================
   BADGES & PILLS
   ========================================================================== */

.pill {
  display: inline-flex;
  align-items: center;
  font-size: 11px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.pill-urgente { background: var(--danger-bg); color: var(--danger); }
.pill-alta    { background: var(--warning-bg); color: var(--warning); }
.pill-media   { background: var(--info-bg); color: var(--info); }
.pill-bassa   { background: var(--success-bg); color: var(--success); }

.badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  background: var(--primary-faded);
  color: var(--primary);
}

/* ==========================================================================
   BUTTONS
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-light);
  background: var(--bg-panel);
  color: var(--text-main);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
}

.btn:hover { background: var(--bg-body); border-color: var(--text-light); }
.btn:active { transform: scale(0.98); }

.btn-primary {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  box-shadow: 0 4px 10px rgba(58, 131, 60, 0.3);
}

.btn-primary:hover { 
  background: var(--primary-hover); 
  border-color: var(--primary-hover); 
  color: #fff;
}

.btn-danger {
  background: var(--danger-bg);
  color: var(--danger);
  border-color: transparent;
}
.btn-danger:hover { background: var(--danger); color: #fff; }

/* ==========================================================================
   FORMS
   ========================================================================== */

.form-group { margin-bottom: 20px; }
.form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 8px;
}
.form-control {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-family: inherit;
  background: var(--bg-panel);
  color: var(--text-main);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-faded);
}

textarea.form-control { resize: vertical; min-height: 80px; }

/* ==========================================================================
   ALERTS
   ========================================================================== */

.alert {
  padding: 14px 18px;
  border-radius: var(--radius-md);
  font-size: 14px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.alert-error { background: var(--danger-bg); color: var(--danger); border: 1px solid hsla(0, 75%, 60%, 0.2); }
.alert-success { background: var(--success-bg); color: var(--success); border: 1px solid hsla(140, 50%, 45%, 0.2); }
.alert-info { background: var(--info-bg); color: var(--info); border: 1px solid hsla(210, 80%, 55%, 0.2); }