:root {
    /* تم روشن (Light Theme) */
    --font-family: 'Vazirmatn', system-ui, sans-serif;
    --bg-color: #f8fafc;
    --bg-gradient: radial-gradient(circle at 50% 0%, #e2e8f0 0%, #f8fafc 70%);
    --sidebar-bg: rgba(255, 255, 255, 0.8);
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --primary-color: #2563eb;
    --primary-gradient: linear-gradient(135deg, #2563eb, #3b82f6);
    --card-bg: rgba(255, 255, 255, 0.9);
    --border-color: rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 4px 6px -1px rgb(0 0 0 / 0.05);
    --shadow-lg: 0 10px 25px -3px rgb(0 0 0 / 0.1);
    --glow: 0 0 20px rgba(37, 99, 235, 0.3);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.dark {
    /* تم تاریک (Dark Theme) - بر اساس تصویر برنامه */
    --bg-color: #0b1120;
    --bg-gradient: radial-gradient(circle at 50% 0%, #1e293b 0%, #0b1120 70%);
    --sidebar-bg: rgba(15, 23, 42, 0.7);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --primary-color: #3b82f6;
    --primary-gradient: linear-gradient(135deg, #2563eb, #3b82f6);
    --card-bg: rgba(30, 41, 59, 0.6);
    --border-color: rgba(255, 255, 255, 0.08);
    --shadow-sm: 0 4px 6px -1px rgb(0 0 0 / 0.3);
    --shadow-lg: 0 10px 25px -3px rgb(0 0 0 / 0.5);
    --glow: 0 0 25px rgba(59, 130, 246, 0.4);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: var(--font-family);
}

body {
    background: var(--bg-gradient);
    background-attachment: fixed;
    color: var(--text-primary);
    transition: background var(--transition), color var(--transition);
    height: 100vh;
    overflow: hidden;
}

/* چیدمان کلی */
.app-container {
    display: flex;
    height: 100vh;
}

/* سایدبار شیشه‌ای (Glassmorphism) */
.sidebar {
    width: 280px;
    background: var(--sidebar-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-left: 1px solid var(--border-color);
    padding: 32px 24px;
    display: flex;
    flex-direction: column;
    transition: var(--transition);
    z-index: 10;
}

.logo {
    font-size: 1.6rem;
    font-weight: 900;
    color: var(--text-primary);
    margin-bottom: 48px;
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo span {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-menu {
    display: flex;
    flex-direction: column;
    gap: 12px;
    flex-grow: 1;
}

.nav-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 14px 18px;
    text-align: right;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: var(--transition);
}

.nav-btn:hover {
    background: var(--border-color);
    color: var(--text-primary);
    transform: translateX(-5px);
}

.nav-btn.active {
    background: var(--primary-gradient);
    color: #ffffff;
    box-shadow: var(--glow);
    transform: translateX(-5px);
}

.theme-toggle {
    background: var(--border-color);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 14px;
    border-radius: 12px;
    cursor: pointer;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-weight: 600;
    transition: var(--transition);
}

.theme-toggle:hover {
    background: var(--card-bg);
    box-shadow: var(--shadow-sm);
}

/* محتوای اصلی */
.main-content {
    flex-grow: 1;
    overflow-y: auto;
    padding: 40px;
    display: flex;
    justify-content: center;
}

.content-wrapper {
    width: 100%;
    max-width: 1000px;
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border-color);
}

.topbar h1 {
    font-size: 2rem;
    font-weight: 900;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
}

.user-profile {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    padding: 10px 20px;
    border-radius: 30px;
    border: 1px solid var(--border-color);
    font-size: 0.9rem;
    font-weight: 600;
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    gap: 10px;
}

.avatar {
    background: var(--primary-gradient);
    color: white;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
}

/* کارت‌های آماری */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    animation: fadeIn 0.6s ease forwards;
}

.stat-card {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.stat-icon.open { background: rgba(59, 130, 246, 0.15); color: #3b82f6; }
.stat-icon.answered { background: rgba(16, 185, 129, 0.15); color: #10b981; }
.stat-icon.total { background: rgba(139, 92, 246, 0.15); color: #8b5cf6; }

.stat-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 600;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
}

/* بخش‌ها */
.view-section {
    display: none;
    animation: fadeIn 0.5s ease forwards;
}

.view-section.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* اینپوت جستجو */
.ticket-filters {
    margin-bottom: 24px;
}

.search-wrapper {
    position: relative;
    width: 100%;
}

.search-icon {
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.search-input {
    width: 100%;
    padding: 18px 50px 18px 20px;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: var(--font-family);
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.search-input::placeholder {
    color: var(--text-secondary);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: var(--glow);
    background: var(--bg-color);
}

/* فرم ثبت تیکت */
.ticket-form {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    padding: 40px;
    border-radius: 20px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    margin-bottom: 10px;
    font-weight: 700;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 16px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    background: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-family);
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: var(--glow);
}

.submit-btn {
    background: var(--primary-gradient);
    color: white;
    border: none;
    padding: 18px 32px;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 800;
    cursor: pointer;
    transition: var(--transition);
    width: 100%;
    box-shadow: var(--glow);
}

.submit-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 0 30px rgba(59, 130, 246, 0.6);
}

/* حالت خالی (Empty State) */
.empty-state {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    padding: 80px 20px;
    text-align: center;
    border-radius: 20px;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 1.1rem;
    font-weight: 600;
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.empty-icon {
    font-size: 4rem;
    filter: drop-shadow(0 0 15px rgba(59, 130, 246, 0.5));
    margin-bottom: 10px;
}

/* کارت‌های تیکت */
.tickets-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}

.ticket-card {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    padding: 24px;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.ticket-card:hover {
    transform: translateY(-4px);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-lg);
}

.ticket-card h3 {
    font-size: 1.2rem;
    font-weight: 800;
}

.ticket-card .status {
    align-self: flex-start;
    padding: 6px 12px;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 700;
    background: rgba(59, 130, 246, 0.15);
    color: var(--primary-color);
}

/* پشتیبانی از سیستم‌های کم‌انیمیشن */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* ریسپانسیو */
@media (max-width: 768px) {
    .app-container { flex-direction: column; }
    .sidebar { width: 100%; height: auto; padding: 20px; border-left: none; border-bottom: 1px solid var(--border-color); }
    .logo { margin-bottom: 20px; }
    .nav-menu { flex-direction: row; }
    .nav-btn { flex: 1; justify-content: center; }
    .main-content { padding: 20px; }
    .content-wrapper { gap: 20px; }
    .topbar { flex-direction: column; align-items: flex-start; gap: 16px; }
    .stats-grid { grid-template-columns: 1fr; }
    .ticket-form { padding: 24px; }
}

/* ==================== کارت تیکت (نسخه پیشرفته) ==================== */
.tickets-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
}

.ticket-card {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 20px 22px;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    gap: 12px;
    position: relative;
    overflow: hidden;
}

/* نوار رنگی سمت راست کارت */
.ticket-card::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 3px;
    height: 100%;
    background: var(--primary-gradient);
    opacity: 0;
    transition: var(--transition);
}

.ticket-card:hover {
    transform: translateY(-3px);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-lg);
}

.ticket-card:hover::before {
    opacity: 1;
}

.ticket-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 12px;
}

.ticket-card h3 {
    font-size: 1.05rem;
    font-weight: 800;
    color: var(--text-primary);
    flex: 1;
    line-height: 1.5;
}

.ticket-owner {
    background: rgba(139, 92, 246, 0.12);
    color: #8b5cf6;
    padding: 4px 10px;
    border-radius: 8px;
    font-size: 0.72rem;
    font-weight: 700;
    white-space: nowrap;
    border: 1px solid rgba(139, 92, 246, 0.2);
    flex-shrink: 0;
}

.ticket-preview {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.ticket-footer {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 4px;
}

.ticket-card .status {
    padding: 5px 12px;
    border-radius: 8px;
    font-size: 0.78rem;
    font-weight: 700;
    background: rgba(59, 130, 246, 0.12);
    color: var(--primary-color);
    border: 1px solid rgba(59, 130, 246, 0.2);
}

.ticket-card .status.open {
    background: rgba(245, 158, 11, 0.12);
    color: #f59e0b;
    border-color: rgba(245, 158, 11, 0.25);
}

.ticket-card .status.answered {
    background: rgba(16, 185, 129, 0.12);
    color: #10b981;
    border-color: rgba(16, 185, 129, 0.25);
}

.ticket-replies {
    background: var(--bg-color);
    color: var(--text-secondary);
    padding: 5px 10px;
    border-radius: 8px;
    font-size: 0.75rem;
    font-weight: 700;
    border: 1px solid var(--border-color);
}