:root {
    --bg-main: #0b0f19;
    --card-bg: #111827;
    --card-border: rgba(255, 255, 255, 0.08);
    --primary-color: #6366f1; /* بنفش مدرن فریلنسری */
    --primary-hover: #4f46e5;
    --text-color: #f9fafb;
    --text-muted: #9ca3af;
    --badge-web: rgba(99, 102, 241, 0.15);
    --badge-ai: rgba(16, 185, 129, 0.15);
    --badge-ui: rgba(236, 72, 153, 0.15);
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Vazirmatn', sans-serif;
}

body {
    background-color: var(--bg-main);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* هدر سایت */
.navbar {
    background-color: rgba(17, 24, 39, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--card-border);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 16px 0;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.logo span, .logo i {
    color: var(--primary-color);
}

.nav-links {
    display: flex;
    gap: 25px;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
}

.nav-links a:hover, .nav-links a.active {
    color: var(--primary-color);
}

.nav-actions {
    display: flex;
    gap: 12px;
}

.btn-outline, .btn-primary {
    padding: 8px 18px;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--card-border);
    color: var(--text-color);
}

.btn-outline:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.btn-primary {
    background-color: var(--primary-color);
    border: none;
    color: white;
}

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

/* بخش هیرو و جستجو */
.hero-section {
    padding: 60px 0 40px;
    background: linear-gradient(to bottom, #111827, #0b0f19);
    text-align: center;
    border-bottom: 1px solid var(--card-border);
}

.hero-content h1 {
    font-size: 32px;
    font-weight: 800;
    margin-bottom: 12px;
}

.hero-content p {
    color: var(--text-muted);
    font-size: 15px;
    margin-bottom: 35px;
}

.search-filter-box {
    max-width: 800px;
    margin: 0 auto;
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    padding: 10px;
    border-radius: 14px;
    display: flex;
    gap: 10px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.3);
}

.search-input-group {
    flex-grow: 1;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 0 12px;
}

.search-input-group i {
    color: var(--text-muted);
}

.search-input-group input {
    width: 100%;
    background: transparent;
    border: none;
    color: var(--text-color);
    font-size: 14px;
    outline: none;
}

.filter-dropdown select, .sort-box select {
    background-color: var(--bg-main);
    border: 1px solid var(--card-border);
    color: var(--text-color);
    padding: 10px 14px;
    border-radius: 8px;
    font-size: 13px;
    outline: none;
}

.btn-search-action {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 0 24px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn-search-action:hover {
    background-color: var(--primary-hover);
}

/* بخش لیست پروژه‌ها */
.main-projects-section {
    padding: 40px 0;
}

.section-title-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.section-title-wrapper h2 {
    font-size: 20px;
    font-weight: 800;
}

.section-title-wrapper span {
    font-size: 12px;
    color: var(--text-muted);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.project-card {
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 14px;
    padding: 22px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: var(--transition);
}

.project-card:hover {
    border-color: rgba(99, 102, 241, 0.4);
    transform: translateY(-4px);
}

.card-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.badge {
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 600;
}

.badge.web { background-color: var(--badge-web); color: #818cf8; }
.badge.ai { background-color: var(--badge-ai); color: #34d399; }
.badge.ui { background-color: var(--badge-ui); color: #f472b6; }

.project-time {
    font-size: 11px;
    color: var(--text-muted);
}

.project-card h3 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 10px;
    line-height: 1.4;
}

.project-card p {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 15px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.skills-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 20px;
}

.skills-tags span {
    background-color: var(--bg-main);
    border: 1px solid var(--card-border);
    padding: 3px 8px;
    border-radius: 6px;
    font-size: 11px;
    color: var(--text-muted);
}

.card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--card-border);
    padding-top: 15px;
}

.budget-info span {
    display: block;
    font-size: 10px;
    color: var(--text-muted);
}

.budget-info strong {
    font-size: 13px;
    color: var(--text-color);
}

.btn-bid {
    background-color: rgba(99, 102, 241, 0.15);
    color: #818cf8;
    border: 1px solid rgba(99, 102, 241, 0.3);
    padding: 6px 14px;
    border-radius: 8px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn-bid:hover {
    background-color: var(--primary-color);
    color: white;
}

/* فوتر */
.main-footer {
    background-color: var(--card-bg);
    border-top: 1px solid var(--card-border);
    padding: 40px 0;
    margin-top: 60px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
}

.footer-col p {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 10px;
}

.footer-col h4 {
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 15px;
}

.footer-col a {
    display: block;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 13px;
    margin-bottom: 8px;
    transition: var(--transition);
}

.footer-col a:hover {
    color: var(--primary-color);
}

/* مودال ارسال پیشنهاد */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-box {
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    width: 450px;
    border-radius: 16px;
    padding: 25px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.5);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.modal-header h3 {
    font-size: 16px;
    font-weight: 700;
}

.close-modal {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 18px;
    cursor: pointer;
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 6px;
}

.form-group input, .form-group textarea {
    width: 100%;
    background-color: var(--bg-main);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    padding: 10px;
    color: var(--text-color);
    font-size: 14px;
    outline: none;
}

.form-group input:focus, .form-group textarea:focus {
    border-color: var(--primary-color);
}

/* ریسپانسیو */
@media (max-width: 768px) {
    .nav-links, .nav-actions .btn-outline { display: none; }
    .search-filter-box { flex-direction: column; }
    .footer-content { grid-template-columns: 1fr; gap: 20px; }
}