:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #8b5cf6;
    --success: #22c55e;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #06b6d4;
    --bg: #f1f5f9;
    --card-bg: #ffffff;
    --text: #1e293b;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --sidebar-bg: #0f172a;
    --sidebar-text: #94a3b8;
    --sidebar-active: #6366f1;
    --topbar-bg: #ffffff;
    --input-bg: #f8fafc;
    --shadow: 0 1px 3px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.08);
    --radius: 12px;
}

[data-theme="dark"] {
    --bg: #0f172a;
    --card-bg: #1e293b;
    --text: #f1f5f9;
    --text-muted: #94a3b8;
    --border: #334155;
    --topbar-bg: #1e293b;
    --input-bg: #334155;
    --shadow: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.4);
}

* { font-family: 'Vazirmatn', Tahoma, Arial, sans-serif; box-sizing: border-box; }
body { background: var(--bg); color: var(--text); margin: 0; transition: background 0.3s, color 0.3s; }
a { text-decoration: none; color: var(--primary); }

/* ===== Public Pages ===== */
.brand-icon { width: 40px; height: 40px; background: linear-gradient(135deg, #6366f1, #8b5cf6); border-radius: 10px; display: inline-flex; align-items: center; justify-content: center; }
.hero-section { padding: 80px 0 60px; background: linear-gradient(135deg, #eef2ff 0%, #faf5ff 100%); }
[data-theme="dark"] .hero-section { background: linear-gradient(135deg, #1e1b4b 0%, #2e1065 100%); }
.hero-title { font-size: 2.5rem; font-weight: 800; color: var(--text); line-height: 1.4; }
.hero-desc { font-size: 1.1rem; color: var(--text-muted); margin-top: 16px; }
.hero-search { display: flex; gap: 10px; max-width: 500px; }
.hero-search .form-control { border-radius: 10px; border: 2px solid var(--border); background: var(--card-bg); }
.hero-search .btn { border-radius: 10px; padding: 8px 24px; white-space: nowrap; }

.survey-card { background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); transition: transform 0.2s, box-shadow 0.2s; height: 100%; display: flex; flex-direction: column; }
.survey-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.survey-card-img img { width: 100%; height: 160px; object-fit: cover; }
.survey-card-body { padding: 20px; flex: 1; display: flex; flex-direction: column; }
.survey-card-title { font-size: 1.1rem; font-weight: 700; margin: 8px 0; color: var(--text); }
.survey-card-desc { font-size: 0.85rem; color: var(--text-muted); flex: 1; }
.survey-card-meta { display: flex; gap: 16px; font-size: 0.8rem; color: var(--text-muted); margin-top: 12px; }
.survey-card-meta svg { width: 16px; height: 16px; vertical-align: middle; margin-left: 4px; }

.survey-header-card { background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); }
.question-card { background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); }
.question-card.is-invalid-card { border-color: var(--danger) !important; background: #fef2f2; }
[data-theme="dark"] .question-card.is-invalid-card { background: rgba(239,68,68,0.1); }
.q-number { background: var(--primary); color: #fff; width: 28px; height: 28px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; font-size: 0.8rem; flex-shrink: 0; }
.rating-btn, .satisfaction-btn { border-radius: 8px !important; min-width: 42px; }
.satisfaction-btn { padding: 10px !important; text-align: center; }

/* ===== Admin Panel ===== */
.admin-wrapper { display: flex; min-height: 100vh; }
.admin-sidebar { width: 260px; background: var(--sidebar-bg); color: var(--sidebar-text); position: fixed; top: 0; right: 0; bottom: 0; z-index: 1040; transition: transform 0.3s; overflow-y: auto; }
.admin-sidebar.closed { transform: translateX(100%); }
.sidebar-header { padding: 20px; border-bottom: 1px solid rgba(255,255,255,0.08); display: flex; align-items: center; gap: 12px; }
.sidebar-menu { padding: 16px 12px; list-style: none; margin: 0; }
.sidebar-menu li a { display: flex; align-items: center; gap: 12px; padding: 10px 16px; border-radius: 8px; color: var(--sidebar-text); font-size: 0.9rem; transition: all 0.2s; margin-bottom: 4px; }
.sidebar-menu li a:hover { background: rgba(255,255,255,0.06); color: #fff; }
.sidebar-menu li a.active { background: var(--sidebar-active); color: #fff; font-weight: 600; box-shadow: 0 4px 12px rgba(99,102,241,0.4); }

/* رفع مشکل سایز آیکون‌های سایدبار */
.sidebar-menu li a svg { 
    width: 20px !important; 
    height: 20px !important; 
    flex-shrink: 0; 
}

.admin-main { flex: 1; margin-right: 260px; transition: margin 0.3s; }
.admin-main.full { margin-right: 0; }
.admin-topbar { background: var(--topbar-bg); border-bottom: 1px solid var(--border); padding: 12px 24px; display: flex; align-items: center; justify-content: space-between; position: sticky; top: 0; z-index: 1030; }
.admin-content { padding: 24px; }

/* کارت‌های آمار */
.stat-card { 
    background: var(--card-bg); 
    border: 1px solid var(--border); 
    border-radius: var(--radius); 
    padding: 24px; 
    box-shadow: var(--shadow); 
    display: flex; 
    align-items: center; 
    gap: 16px; 
    transition: all 0.3s ease;
}
.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}
.stat-icon { 
    width: 52px; 
    height: 52px; 
    border-radius: 12px; 
    display: flex; 
    align-items: center; 
    justify-content: center; 
    flex-shrink: 0;
}

/* رفع مشکل بزرگ بودن آیکون‌های داخل کارت‌های آمار */
.stat-icon svg { 
    width: 24px !important; 
    height: 24px !important; 
}

.stat-info h3 { font-size: 1.5rem; font-weight: 800; margin: 0; color: var(--text); }
.stat-info p { margin: 0; font-size: 0.8rem; color: var(--text-muted); }

.data-table { background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; }
.data-table table { margin: 0; color: var(--text); }
.data-table thead { background: var(--input-bg); }
.data-table th { font-weight: 600; font-size: 0.85rem; border-bottom: 2px solid var(--border); padding: 12px 16px; white-space: nowrap; }
.data-table td { padding: 12px 16px; vertical-align: middle; border-bottom: 1px solid var(--border); font-size: 0.9rem; }
.data-table .btn-group .btn { padding: 4px 8px; font-size: 0.8rem; }

.card-panel { background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); margin-bottom: 24px; }
.card-panel-header { padding: 16px 24px; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; }
.card-panel-body { padding: 24px; }

/* ===== Survey Builder ===== */
.question-builder-item { background: var(--input-bg); border: 1px solid var(--border); border-radius: 10px; padding: 16px; margin-bottom: 16px; position: relative; transition: box-shadow 0.2s; }
.question-builder-item:hover { box-shadow: var(--shadow-lg); }
.question-builder-item .drag-handle { cursor: grab; color: var(--text-muted); }
.option-row { display: flex; gap: 8px; align-items: center; margin-bottom: 8px; }
.option-row input { flex: 1; }

/* ===== Login Page ===== */
.login-wrapper { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 100%); }
.login-card { background: var(--card-bg); border-radius: 16px; padding: 40px; width: 100%; max-width: 420px; box-shadow: var(--shadow-lg); }

/* ===== Toasts ===== */
.toast-container { position: fixed; top: 20px; left: 20px; z-index: 9999; display: flex; flex-direction: column; gap: 8px; }
.custom-toast { padding: 14px 20px; border-radius: 10px; color: #fff; font-size: 0.9rem; box-shadow: var(--shadow-lg); animation: slideIn 0.3s ease; display: flex; align-items: center; gap: 10px; min-width: 280px; }
.custom-toast.success { background: #16a34a; }
.custom-toast.error { background: #dc2626; }
.custom-toast.warning { background: #d97706; }
.custom-toast.info { background: #0891b2; }
@keyframes slideIn { from { transform: translateX(-100%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

/* ===== Responsive ===== */
@media (max-width: 992px) {
    .admin-sidebar { transform: translateX(100%); }
    .admin-sidebar.open { transform: translateX(0); }
    .admin-main { margin-right: 0 !important; }
    .hero-title { font-size: 1.8rem; }
    .hero-search { flex-direction: column; }
}

.progress-custom { width: 100%; height: 8px; background: var(--border); border-radius: 10px; overflow: hidden; }
.progress-custom-bar { height: 100%; background: var(--info); border-radius: 10px; transition: width 0.8s ease-in-out; }
/* ===== PORS Professional Polish ===== */
:root {
    --focus-ring: 0 0 0 4px rgba(99,102,241,.14);
    --surface-soft: #f8fafc;
}

html { scroll-behavior: smooth; }
body { -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
button, input, select, textarea { font-family: inherit; }
:focus-visible { outline: 0; box-shadow: var(--focus-ring) !important; }
.form-control, .form-select { border-color: var(--border); background-color: var(--card-bg); color: var(--text); transition: border-color .18s ease, box-shadow .18s ease, background-color .18s ease; }
.form-control:focus, .form-select:focus { border-color: var(--primary); background-color: var(--card-bg); color: var(--text); box-shadow: var(--focus-ring); }
.form-control::placeholder { color: var(--text-muted); opacity: .75; }
.btn { border-radius: 9px; font-weight: 600; transition: transform .18s ease, box-shadow .18s ease, opacity .18s ease; }
.btn:not(:disabled):hover { transform: translateY(-1px); }
.btn-primary { box-shadow: 0 6px 18px rgba(99,102,241,.18); }
.btn.is-loading { opacity: .7; pointer-events: none; }
.btn.is-loading::after { content: ''; display: inline-block; width: 1rem; height: 1rem; margin-right: .5rem; vertical-align: -.15em; border: 2px solid currentColor; border-left-color: transparent; border-radius: 50%; animation: porsSpin .65s linear infinite; }
@keyframes porsSpin { to { transform: rotate(360deg); } }

.admin-topbar { backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); background: color-mix(in srgb, var(--topbar-bg) 90%, transparent); }
.admin-content { max-width: 1800px; margin: 0 auto; width: 100%; }
.card-panel, .data-table, .stat-card, .survey-card, .question-card { transition: border-color .2s ease, box-shadow .2s ease, transform .2s ease; }
.card-panel:hover { border-color: color-mix(in srgb, var(--primary) 20%, var(--border)); }
.data-table { overflow-x: auto; }
.data-table table { min-width: 680px; }
.badge { font-weight: 600; letter-spacing: 0; }

/* Better toast animation and RTL positioning */
.toast-container { left: auto; right: 20px; }
.custom-toast { min-width: 300px; max-width: min(440px, calc(100vw - 40px)); animation: porsToastIn .28s ease both; }
.custom-toast.is-hiding { opacity: 0; transform: translateY(-8px) scale(.98); transition: .25s ease; }
@keyframes porsToastIn { from { opacity: 0; transform: translateY(-10px); } to { opacity: 1; transform: translateY(0); } }

/* Professional builder */
.question-builder-item { border-width: 1px; background: var(--card-bg); box-shadow: 0 1px 2px rgba(15,23,42,.03); }
.question-builder-item:hover { border-color: rgba(99,102,241,.35); }
.option-row input { min-height: 40px; }

/* Public survey readability */
.public-page .question-card { box-shadow: 0 8px 28px rgba(15,23,42,.05); }
.public-page .question-card:focus-within { border-color: rgba(99,102,241,.45); box-shadow: 0 10px 34px rgba(99,102,241,.10); }
.public-page .progress { background: var(--border); }

/* Empty states */
.empty-state { padding: 56px 24px; text-align: center; color: var(--text-muted); }
.empty-state .empty-icon { width: 64px; height: 64px; margin: 0 auto 16px; border-radius: 18px; display:flex; align-items:center; justify-content:center; background: var(--input-bg); color: var(--primary); }

/* Mobile admin usability */
@media (max-width: 768px) {
    .admin-content { padding: 16px; }
    .admin-topbar { padding: 10px 16px; }
    .stat-card { padding: 18px; }
    .card-panel-body { padding: 18px; }
    .card-panel-header { padding: 14px 18px; }
    .toast-container { right: 12px; left: 12px; top: 12px; }
    .custom-toast { min-width: 0; width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}

@media print {
    .admin-sidebar, .admin-topbar, .btn, .no-print { display: none !important; }
    .admin-main { margin: 0 !important; }
    .admin-content { padding: 0; max-width: none; }
    .card-panel, .data-table { box-shadow: none !important; border: 1px solid #ddd; }
}

/* Professional question builder interactions */
.question-builder-item[draggable="true"] { cursor: default; }
.question-builder-item .drag-handle { cursor: grab; user-select: none; font-size: 20px; line-height: 1; color: var(--text-muted); margin-left: 8px; }
.question-builder-item .drag-handle:active { cursor: grabbing; }
.question-builder-item.is-dragging { opacity: .55; transform: scale(.995); }
.question-builder-item:focus-within { border-color: rgba(99,102,241,.45); box-shadow: 0 8px 24px rgba(99,102,241,.08); }
.is-invalid-card { border: 1px solid rgba(220,38,38,.55) !important; box-shadow: 0 0 0 4px rgba(220,38,38,.08) !important; }
.public-page .question-card { border: 1px solid var(--border); border-radius: 16px; padding: 22px; background: var(--card-bg); }
.public-page .q-number { display:inline-flex; align-items:center; justify-content:center; min-width:34px; height:34px; border-radius:10px; background:rgba(99,102,241,.10); color:var(--primary); font-weight:800; }