/* ============================================
   ProjectHub - استایل اصلی
   تم: مدرن، روشن، موبایل‌فرندلی، RTL
   ============================================ */

@font-face {
  font-family: 'Vazirmatn';
  src: url('../fonts/Vazirmatn-Regular.woff2') format('woff2'),
       url('../fonts/Vazirmatn-Regular.woff') format('woff');
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: 'Vazirmatn';
  src: url('../fonts/Vazirmatn-Medium.woff2') format('woff2'),
       url('../fonts/Vazirmatn-Medium.woff') format('woff');
  font-weight: 500;
  font-display: swap;
}
@font-face {
  font-family: 'Vazirmatn';
  src: url('../fonts/Vazirmatn-Bold.woff2') format('woff2'),
       url('../fonts/Vazirmatn-Bold.woff') format('woff');
  font-weight: 700;
  font-display: swap;
}

:root {
  --primary: #4f46e5;
  --primary-dark: #4338ca;
  --primary-light: #eef2ff;
  --success: #16a34a;
  --success-light: #f0fdf4;
  --warning: #ea580c;
  --warning-light: #fff7ed;
  --danger: #dc2626;
  --danger-light: #fef2f2;
  --gray-blue: #64748b;
  --gray-blue-light: #f1f5f9;

  --bg: #f8fafc;
  --surface: #ffffff;
  --border: #e2e8f0;
  --text: #1e293b;
  --text-muted: #64748b;
  --text-light: #94a3b8;

  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow: 0 1px 3px rgba(15, 23, 42, 0.08), 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 10px 25px rgba(15, 23, 42, 0.08), 0 4px 10px rgba(15, 23, 42, 0.04);
}

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

html { -webkit-text-size-adjust: 100%; }

body {
  font-family: 'Vazirmatn', Tahoma, sans-serif;
  background: var(--bg);
  color: var(--text);
  direction: rtl;
  line-height: 1.7;
  font-size: 15px;
  min-height: 100vh;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, select, textarea { font-family: inherit; font-size: inherit; }

/* ---------- Layout ---------- */
.app-shell {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 260px;
  background: var(--surface);
  border-left: 1px solid var(--border);
  padding: 24px 18px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  flex-shrink: 0;
  transition: transform 0.25s ease;
  z-index: 50;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 8px 22px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--border);
}

.sidebar-brand .logo-icon {
  width: 38px; height: 38px;
  background: linear-gradient(135deg, var(--primary), #7c3aed);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 700; font-size: 18px;
  flex-shrink: 0;
}
.sidebar-brand .brand-text { font-weight: 700; font-size: 17px; }
.sidebar-brand .brand-sub { font-size: 11px; color: var(--text-muted); font-weight: 400; }

.nav-list { display: flex; flex-direction: column; gap: 4px; }
.nav-item {
  display: flex; align-items: center; gap: 10px;
  padding: 11px 14px;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 14.5px;
  font-weight: 500;
  transition: background 0.15s, color 0.15s;
}
.nav-item svg { width: 19px; height: 19px; flex-shrink: 0; }
.nav-item:hover { background: var(--gray-blue-light); color: var(--text); }
.nav-item.active { background: var(--primary-light); color: var(--primary); }

.sidebar-footer {
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
}

.main-content {
  flex: 1;
  min-width: 0;
  padding: 26px 28px 60px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 26px;
  gap: 12px;
  flex-wrap: wrap;
}
.topbar h1 { font-size: 21px; font-weight: 700; }
.topbar .page-desc { font-size: 13.5px; color: var(--text-muted); margin-top: 3px; }

.mobile-toggle {
  display: none;
  width: 40px; height: 40px;
  align-items: center; justify-content: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.sidebar-overlay {
  display: none;
  position: fixed; inset: 0;
  background: rgba(15, 23, 42, 0.4);
  z-index: 40;
}

/* ---------- Cards ---------- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow-sm);
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 22px;
}
.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  box-shadow: var(--shadow-sm);
}
.stat-card .stat-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; }
.stat-card .stat-icon {
  width: 38px; height: 38px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
}
.stat-icon svg { width: 19px; height: 19px; }
.stat-icon.blue { background: #eef2ff; color: var(--primary); }
.stat-icon.green { background: var(--success-light); color: var(--success); }
.stat-icon.orange { background: var(--warning-light); color: var(--warning); }
.stat-icon.gray { background: var(--gray-blue-light); color: var(--gray-blue); }

.stat-card .stat-value { font-size: 24px; font-weight: 700; margin-bottom: 3px; }
.stat-card .stat-label { font-size: 13px; color: var(--text-muted); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  transition: all 0.15s;
  white-space: nowrap;
}
.btn svg { width: 17px; height: 17px; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-outline { background: var(--surface); color: var(--text); border: 1px solid var(--border); }
.btn-outline:hover { background: var(--gray-blue-light); }
.btn-danger { background: var(--danger-light); color: var(--danger); }
.btn-danger:hover { background: #fee2e2; }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: #15803d; }
.btn-sm { padding: 7px 13px; font-size: 13px; }
.btn-block { width: 100%; }
.btn-icon { padding: 9px; }

/* ---------- Forms ---------- */
.form-group { margin-bottom: 18px; }
.form-label { display: block; font-size: 13.5px; font-weight: 500; margin-bottom: 7px; color: var(--text); }
.form-label .req { color: var(--danger); }
.form-control {
  width: 100%;
  padding: 11px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text);
  font-size: 14.5px;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.12);
}
textarea.form-control { resize: vertical; min-height: 90px; }
.form-hint { font-size: 12.5px; color: var(--text-light); margin-top: 5px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.input-group { position: relative; }
.input-group .form-control { padding-left: 70px; }
.input-suffix {
  position: absolute; left: 1px; top: 1px; bottom: 1px;
  display: flex; align-items: center; padding: 0 14px;
  background: var(--gray-blue-light); border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 13px; color: var(--text-muted);
}

/* ---------- Badges ---------- */
.badge {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 4px 11px;
  border-radius: 999px;
  font-size: 12.5px;
  font-weight: 500;
}
.badge-gray { background: var(--gray-blue-light); color: var(--gray-blue); }
.badge-blue { background: var(--primary-light); color: var(--primary); }
.badge-orange { background: var(--warning-light); color: var(--warning); }
.badge-green { background: var(--success-light); color: var(--success); }
.badge-red { background: var(--danger-light); color: var(--danger); }

/* ---------- Table ---------- */
.table-wrap { overflow-x: auto; }
table.data-table { width: 100%; border-collapse: collapse; min-width: 680px; }
.data-table th {
  text-align: right;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text-muted);
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.data-table td {
  padding: 14px;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
  vertical-align: middle;
}
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: #fafbfc; }

/* ---------- Project Card (list view mobile) ---------- */
.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
  margin-bottom: 12px;
  box-shadow: var(--shadow-sm);
}
.project-card-top { display: flex; justify-content: space-between; align-items: flex-start; gap: 10px; margin-bottom: 10px; }
.project-card-title { font-weight: 600; font-size: 15.5px; }
.project-card-meta { display: flex; flex-wrap: wrap; gap: 14px; font-size: 12.5px; color: var(--text-muted); margin-bottom: 12px; }
.project-card-meta span { display: flex; align-items: center; gap: 5px; }
.project-card-actions { display: flex; gap: 8px; flex-wrap: wrap; }

/* ---------- Task checklist ---------- */
.task-item {
  display: flex; align-items: flex-start; gap: 12px;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
  transition: background 0.15s;
}
.task-item.done { background: var(--success-light); border-color: #bbf7d0; }
.task-item input[type=checkbox] {
  width: 20px; height: 20px; margin-top: 2px; accent-color: var(--success); flex-shrink: 0; cursor: pointer;
}
.task-item .task-title { flex: 1; font-size: 14.5px; }
.task-item.done .task-title { text-decoration: line-through; color: var(--text-muted); }

/* ---------- Alerts ---------- */
.alert {
  padding: 13px 16px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  margin-bottom: 18px;
  display: flex; align-items: center; gap: 10px;
}
.alert-success { background: var(--success-light); color: #15803d; border: 1px solid #bbf7d0; }
.alert-error { background: var(--danger-light); color: #b91c1c; border: 1px solid #fecaca; }
.alert-warning { background: var(--warning-light); color: #c2410c; border: 1px solid #fed7aa; }
.alert-info { background: var(--primary-light); color: var(--primary-dark); border: 1px solid #c7d2fe; }

/* ---------- Modal ---------- */
.modal-overlay {
  display: none;
  position: fixed; inset: 0;
  background: rgba(15, 23, 42, 0.5);
  z-index: 100;
  align-items: center; justify-content: center;
  padding: 20px;
}
.modal-overlay.open { display: flex; }
.modal-box {
  background: var(--surface);
  border-radius: var(--radius-lg);
  max-width: 460px; width: 100%;
  padding: 24px;
  box-shadow: var(--shadow-lg);
  max-height: 90vh; overflow-y: auto;
}
.modal-title { font-size: 17px; font-weight: 700; margin-bottom: 16px; }

/* ---------- Login page ---------- */
.login-wrap {
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #eef2ff 0%, #f8fafc 60%);
  padding: 20px;
}
.login-box {
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 36px 32px;
  width: 100%;
  max-width: 380px;
}
.login-logo { text-align: center; margin-bottom: 26px; }
.login-logo .logo-icon {
  width: 56px; height: 56px;
  background: linear-gradient(135deg, var(--primary), #7c3aed);
  border-radius: 14px;
  display: inline-flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 700; font-size: 24px;
  margin-bottom: 12px;
}
.login-logo h1 { font-size: 18px; font-weight: 700; }
.login-logo p { font-size: 13px; color: var(--text-muted); margin-top: 4px; }

/* ---------- Calendar month picker ---------- */
.month-nav {
  display: flex; align-items: center; justify-content: space-between;
  gap: 10px; margin-bottom: 20px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 12px 16px;
}
.month-nav .current-month { font-weight: 700; font-size: 15.5px; }
.month-nav button {
  width: 34px; height: 34px; border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  background: var(--gray-blue-light);
  transition: background 0.15s;
}
.month-nav button:hover { background: var(--primary-light); color: var(--primary); }

/* ---------- Empty state ---------- */
.empty-state { text-align: center; padding: 50px 20px; color: var(--text-muted); }
.empty-state svg { width: 52px; height: 52px; margin: 0 auto 14px; opacity: 0.4; }
.empty-state p { font-size: 14.5px; }

/* ---------- Utility ---------- */
.text-muted { color: var(--text-muted); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }
.mb-0 { margin-bottom: 0; }
.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.section-title { font-size: 16px; font-weight: 700; margin-bottom: 14px; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .form-row { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .sidebar {
    position: fixed;
    top: 0; right: 0;
    transform: translateX(100%);
    box-shadow: var(--shadow-lg);
  }
  .sidebar.open { transform: translateX(0); }
  .sidebar-overlay.open { display: block; }
  .mobile-toggle { display: flex; }
  .main-content { padding: 18px 16px 50px; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .stat-card { padding: 14px; }
  .stat-card .stat-value { font-size: 19px; }
  .topbar h1 { font-size: 18px; }
  table.data-table { display: none; }
}

@media (min-width: 769px) {
  .mobile-project-cards { display: none; }
}

@media (max-width: 480px) {
  .stat-grid { grid-template-columns: 1fr 1fr; }
  .login-box { padding: 26px 20px; }
}