/* ============================================================
   ROOT VARIABLES
   ============================================================ */
:root {
    --primary-purple: #8B5CF6;
    --primary-purple-dark: #7C3AED;
    --primary-green: #10B981;
    --primary-green-dark: #059669;
    --dark-bg: #0f0f23;
    --dark-bg-secondary: #1a1a3e;
    --text-muted: #6B7280;
    --card-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================================
   GLOBAL STYLES
   ============================================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: #1e293b;
    background: #f8fafc;
    line-height: 1.6;
    overflow-x: hidden;
}

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

    a:hover {
        color: var(--primary-purple-dark);
    }

.text-gradient {
    background: linear-gradient(135deg, var(--primary-purple), var(--primary-green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 0.5rem;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto;
}

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

    .btn-purple:hover {
        background: var(--primary-purple-dark);
        border-color: var(--primary-purple-dark);
        color: #fff;
        transform: translateY(-2px);
        box-shadow: 0 8px 25px rgba(139, 92, 246, 0.35);
    }

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

    .btn-outline-purple:hover {
        background: var(--primary-purple);
        color: #fff;
        transform: translateY(-2px);
    }

.btn-success-custom {
    background: var(--primary-green);
    border-color: var(--primary-green);
    color: #fff;
    transition: var(--transition);
}

    .btn-success-custom:hover {
        background: var(--primary-green-dark);
        border-color: var(--primary-green-dark);
        color: #fff;
        transform: translateY(-2px);
        box-shadow: 0 8px 25px rgba(16, 185, 129, 0.35);
    }

.bg-gradient-hero {
    background: linear-gradient(135deg, var(--dark-bg) 0%, var(--dark-bg-secondary) 100%);
}

/* ============================================================
                   NAVBAR - با منوی آفلاین (Offcanvas)
           ============================================================ */
.navbar {
    padding: 0.75rem 0;
    background: rgba(255, 255, 255, 0.95) !important;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
    border-bottom: 1px solid rgba(0, 0, 0, 0.04);
}

.navbar-brand img {
    height: 42px;
    transition: var(--transition);
}

.navbar-brand:hover img {
    transform: scale(1.02);
}

/* دکمه همبرگر */
.navbar-toggler {
    border: none;
    padding: 0.5rem;
    border-radius: 10px;
    transition: var(--transition);
}

    .navbar-toggler:focus {
        box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.25);
    }

/* Offcanvas منوی موبایل */
.offcanvas {
    background: #fff;
    max-width: 320px;
    border-right: 1px solid rgba(0, 0, 0, 0.04);
}

.offcanvas-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid rgba(0, 0, 0, 0.04);
}

    .offcanvas-header .navbar-brand img {
        height: 36px;
    }

.offcanvas-body {
    padding: 1.5rem;
}

    .offcanvas-body .nav-link {
        padding: 0.7rem 0;
        font-weight: 500;
        color: #1e293b;
        border-bottom: 1px solid rgba(0, 0, 0, 0.04);
        transition: var(--transition);
        display: flex;
        align-items: center;
        gap: 0.75rem;
    }

        .offcanvas-body .nav-link:hover {
            color: var(--primary-purple);
            padding-left: 8px;
        }

        .offcanvas-body .nav-link i {
            width: 20px;
            color: var(--primary-purple);
            font-size: 0.9rem;
        }

    .offcanvas-body .btn-purple {
        width: 100%;
        margin-top: 0.5rem;
        padding: 0.75rem;
    }

/* منوی دسکتاپ */
.navbar-nav .nav-link {
    font-weight: 500;
    color: #1e293b;
    padding: 0.5rem 1rem;
    transition: var(--transition);
    position: relative;
}

    .navbar-nav .nav-link::after {
        content: '';
        position: absolute;
        bottom: 2px;
        left: 50%;
        width: 0;
        height: 2px;
        background: var(--primary-purple);
        transition: var(--transition);
        transform: translateX(-50%);
        border-radius: 2px;
    }

    .navbar-nav .nav-link:hover {
        color: var(--primary-purple);
    }

        .navbar-nav .nav-link:hover::after {
            width: 60%;
        }

    .navbar-nav .nav-link.active {
        color: var(--primary-purple);
        font-weight: 600;
    }

        .navbar-nav .nav-link.active::after {
            width: 60%;
        }

/* ============================================================
   HERO SECTION
   ============================================================ */
.hero-section {
    padding: 100px 0 80px;
    color: #fff;
    position: relative;
    overflow: hidden;
}

    .hero-section::before {
        content: '';
        position: absolute;
        top: -50%;
        right: -20%;
        width: 600px;
        height: 600px;
        background: radial-gradient(circle, rgba(139, 92, 246, 0.15) 0%, transparent 70%);
        border-radius: 50%;
        pointer-events: none;
    }

    .hero-section h1 {
        font-size: 3.5rem;
        font-weight: 900;
        letter-spacing: -0.03em;
        line-height: 1.1;
    }

    .hero-section .lead {
        font-size: 1.2rem;
        opacity: 0.8;
        max-width: 500px;
    }

    .hero-section .badge {
        font-weight: 500;
        padding: 0.4rem 0.9rem;
    }

        .hero-section .badge.bg-success {
            background: var(--primary-green) !important;
        }

        .hero-section .badge.bg-info {
            background: var(--primary-purple) !important;
        }

.hero-image {
    border-radius: 16px;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.3);
    transition: var(--transition);
    max-width: 100%;
    height: auto;
}

    .hero-image:hover {
        transform: scale(1.01);
    }

/* ============================================================
   FEATURES SECTION
   ============================================================ */
.features-section {
    padding: 80px 0;
    background: #fff;
}

.feature-card {
    background: #fff;
    border: 1px solid rgba(0, 0, 0, 0.04);
    border-radius: 20px;
    padding: 2rem 1.5rem;
    transition: var(--transition);
    height: 100%;
    box-shadow: var(--card-shadow);
}

    .feature-card:hover {
        transform: translateY(-8px);
        box-shadow: 0 20px 50px rgba(0, 0, 0, 0.08);
        border-color: var(--primary-purple);
    }

    .feature-card .icon-wrapper {
        width: 64px;
        height: 64px;
        border-radius: 16px;
        display: flex;
        align-items: center;
        justify-content: center;
        margin: 0 auto 1.25rem;
        background: linear-gradient(135deg, rgba(139, 92, 246, 0.12), rgba(16, 185, 129, 0.12));
    }

        .feature-card .icon-wrapper i {
            font-size: 1.75rem;
            background: linear-gradient(135deg, var(--primary-purple), var(--primary-green));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

    .feature-card h4 {
        font-weight: 700;
        font-size: 1.125rem;
        margin-bottom: 0.5rem;
    }

    .feature-card p {
        font-size: 0.95rem;
        color: var(--text-muted);
        margin-bottom: 0;
    }

/* ============================================================
   FEATURES DETAIL PAGE
   ============================================================ */
.features-hero {
    padding: 100px 0 60px;
    color: #fff;
}

    .features-hero h1 {
        font-size: 3rem;
        font-weight: 900;
        letter-spacing: -0.03em;
        line-height: 1.1;
    }

.feature-detail-card {
    background: #fff;
    border-radius: 24px;
    padding: 2.5rem;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
    border: 1px solid rgba(0, 0, 0, 0.04);
    height: 100%;
    position: relative;
    overflow: hidden;
}

    .feature-detail-card:hover {
        transform: translateY(-6px);
        box-shadow: 0 20px 50px rgba(0, 0, 0, 0.10);
    }

    .feature-detail-card .icon-wrapper {
        width: 72px;
        height: 72px;
        border-radius: 18px;
        display: flex;
        align-items: center;
        justify-content: center;
        margin-bottom: 1.25rem;
        background: linear-gradient(135deg, rgba(139, 92, 246, 0.12), rgba(16, 185, 129, 0.12));
        flex-shrink: 0;
    }

        .feature-detail-card .icon-wrapper i {
            font-size: 2rem;
            background: linear-gradient(135deg, var(--primary-purple), var(--primary-green));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

    .feature-detail-card .badge-feature {
        background: rgba(139, 92, 246, 0.08);
        color: var(--primary-purple);
        font-weight: 600;
        font-size: 0.7rem;
        text-transform: uppercase;
        letter-spacing: 0.06em;
        padding: 0.3rem 0.8rem;
        border-radius: 50px;
        display: inline-block;
        margin-bottom: 0.75rem;
    }

    .feature-detail-card .feature-tag {
        position: absolute;
        top: 1.25rem;
        right: 1.25rem;
        font-size: 0.7rem;
        font-weight: 600;
        color: var(--text-muted);
        background: #f1f5f9;
        padding: 0.2rem 0.7rem;
        border-radius: 50px;
    }

    .feature-detail-card .problem-text {
        background: #fef2f2;
        color: #b91c1c;
        padding: 0.75rem 1rem;
        border-radius: 12px;
        font-size: 0.9rem;
        margin: 0.75rem 0;
        border-left: 3px solid #ef4444;
    }

    .feature-detail-card .solution-text {
        background: #ecfdf5;
        color: #065f46;
        padding: 0.75rem 1rem;
        border-radius: 12px;
        font-size: 0.9rem;
        margin: 0.75rem 0;
        border-left: 3px solid var(--primary-green);
    }

/* ============================================================
   GALLERY SECTION
   ============================================================ */
.gallery-section {
    padding: 80px 0;
    background: #f8fafc;
}

.gallery-card {
    border: none;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
    cursor: pointer;
    background: #fff;
}

    .gallery-card:hover {
        transform: translateY(-6px);
        box-shadow: 0 20px 50px rgba(0, 0, 0, 0.10);
    }

    .gallery-card img {
        width: 100%;
        height: 220px;
        object-fit: cover;
        transition: var(--transition);
    }

    .gallery-card:hover img {
        transform: scale(1.03);
    }

    .gallery-card .card-body {
        padding: 1.25rem;
        text-align: center;
    }

        .gallery-card .card-body h5 {
            font-weight: 600;
            font-size: 1rem;
            margin-bottom: 0.25rem;
        }

        .gallery-card .card-body p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

/* ============================================================
   PRICING SECTION
   ============================================================ */
.pricing-hero {
    padding: 100px 0 60px;
    background: linear-gradient(135deg, var(--dark-bg) 0%, #1a1a3e 100%);
    color: #fff;
}

    .pricing-hero h1 {
        font-size: 3rem;
        font-weight: 900;
        letter-spacing: -0.03em;
        line-height: 1.1;
    }

.pricing-section {
    padding: 80px 0;
}

.price-card {
    border: 1px solid rgba(0, 0, 0, 0.04);
    border-radius: 24px;
    padding: 2rem 1.5rem;
    background: #fff;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
    height: 100%;
    position: relative;
}

    .price-card:hover {
        transform: translateY(-8px);
        box-shadow: 0 20px 50px rgba(0, 0, 0, 0.10);
    }

    .price-card.featured {
        border: 2px solid var(--primary-purple);
        box-shadow: 0 10px 40px rgba(139, 92, 246, 0.12);
    }

    .price-card .badge {
        background: var(--primary-purple);
        color: #fff;
        font-weight: 600;
        padding: 0.4rem 1rem;
        border-radius: 50px;
        font-size: 0.75rem;
        text-transform: uppercase;
        letter-spacing: 0.03em;
    }

    .price-card h3 {
        font-weight: 700;
        font-size: 1.5rem;
        margin-top: 0.5rem;
    }

    .price-card .price {
        margin: 1rem 0;
    }

        .price-card .price .display-4 {
            font-weight: 800;
        }

    .price-card hr {
        opacity: 0.1;
        margin: 1.25rem 0;
    }

    .price-card ul {
        text-align: center;
        padding: 0;
        list-style: none;
    }

        .price-card ul li {
            padding: 0.4rem 0;
            font-size: 0.95rem;
        }

            .price-card ul li .fa-check {
                color: var(--primary-green);
            }

            .price-card ul li .fa-times {
                color: var(--text-muted);
            }

    .price-card .btn {
        margin-top: 1rem;
        padding: 0.6rem 1.5rem;
        border-radius: 50px;
        font-weight: 600;
    }

/* ============================================================
   DOWNLOAD SECTION
   ============================================================ */
.download-hero {
    padding: 100px 0 60px;
    background: linear-gradient(135deg, var(--dark-bg) 0%, #1a1a3e 100%);
    color: #fff;
}

    .download-hero h1 {
        font-size: 3rem;
        font-weight: 900;
        letter-spacing: -0.03em;
        line-height: 1.1;
    }

.download-card {
    border: none;
    border-radius: 24px;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
    background: #fff;
    overflow: hidden;
    position: relative;
}

    .download-card:hover {
        transform: translateY(-6px);
        box-shadow: 0 20px 50px rgba(0, 0, 0, 0.10);
    }

    .download-card .card-body {
        padding: 3rem 2.5rem;
    }

    .download-card i.fa-windows {
        color: var(--primary-purple);
    }

    .download-card h3 {
        font-weight: 700;
        font-size: 1.5rem;
        margin-top: 0.5rem;
    }

    .download-card .version-info {
        color: var(--text-muted);
        font-size: 0.95rem;
    }

.badge-latest {
    position: absolute;
    top: 1.25rem;
    right: 1.25rem;
    background: var(--primary-green);
    color: #fff;
    font-weight: 600;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: 0.3rem 0.8rem;
    border-radius: 50px;
}

.changelog-card {
    border: none;
    border-radius: 16px;
    overflow: hidden;
    transition: var(--transition);
}

    .changelog-card:hover {
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
    }

    .changelog-card .card-header {
        background: #f8fafc;
        border-bottom: 1px solid rgba(0, 0, 0, 0.04);
        padding: 1rem 1.25rem;
        cursor: pointer;
        transition: var(--transition);
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

        .changelog-card .card-header:hover {
            background: #f1f5f9;
        }

        .changelog-card .card-header .version-tag {
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--primary-purple);
        }

        .changelog-card .card-header .release-date {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .changelog-card .card-header .toggle-icon {
            transition: transform 0.3s ease;
            font-size: 0.9rem;
            color: var(--text-muted);
        }

            .changelog-card .card-header .toggle-icon.open {
                transform: rotate(180deg);
            }

    .changelog-card .card-body {
        padding: 1.25rem;
    }

        .changelog-card .card-body ul {
            padding-left: 1.5rem;
            margin-bottom: 0;
        }

            .changelog-card .card-body ul li {
                padding: 0.35rem 0;
                font-size: 0.95rem;
                color: #1e293b;
            }

                .changelog-card .card-body ul li .badge-feature {
                    background: rgba(16, 185, 129, 0.12);
                    color: #065f46;
                    font-size: 0.65rem;
                    font-weight: 600;
                    padding: 0.15rem 0.5rem;
                    border-radius: 50px;
                    margin-right: 0.5rem;
                }

                .changelog-card .card-body ul li .badge-fix {
                    background: rgba(239, 68, 68, 0.12);
                    color: #991b1b;
                    font-size: 0.65rem;
                    font-weight: 600;
                    padding: 0.15rem 0.5rem;
                    border-radius: 50px;
                    margin-right: 0.5rem;
                }

                .changelog-card .card-body ul li .badge-improvement {
                    background: rgba(59, 130, 246, 0.12);
                    color: #1e40af;
                    font-size: 0.65rem;
                    font-weight: 600;
                    padding: 0.15rem 0.5rem;
                    border-radius: 50px;
                    margin-right: 0.5rem;
                }

                .changelog-card .card-body ul li .badge-security {
                    background: rgba(245, 158, 11, 0.12);
                    color: #92400e;
                    font-size: 0.65rem;
                    font-weight: 600;
                    padding: 0.15rem 0.5rem;
                    border-radius: 50px;
                    margin-right: 0.5rem;
                }

.version-list {
    max-height: 300px;
    overflow-y: auto;
}

.version-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid rgba(0, 0, 0, 0.04);
    transition: var(--transition);
}

    .version-item:hover {
        background: #f8fafc;
    }

    .version-item .version-number {
        font-weight: 600;
        font-size: 0.95rem;
    }

    .version-item .version-date {
        color: var(--text-muted);
        font-size: 0.8rem;
    }

    .version-item .btn-download {
        font-size: 0.8rem;
        padding: 0.2rem 0.8rem;
    }

/* ============================================================
                   MODAL (Lightbox)
           ============================================================ */
.modal-content {
    border: none;
    border-radius: 20px;
    overflow: hidden;
}

.modal-header {
    border: none;
    padding: 1.25rem 1.5rem 0;
}

    .modal-header .btn-close {
        background: rgba(0, 0, 0, 0.04);
        border-radius: 50%;
        padding: 0.5rem;
        transition: var(--transition);
    }

        .modal-header .btn-close:hover {
            background: rgba(0, 0, 0, 0.08);
        }

.modal-body {
    padding: 1.5rem;
    text-align: center;
}

    .modal-body .modal-img {
        max-width: 100%;
        max-height: 70vh;
        border-radius: 12px;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    }

    .modal-body .modal-desc {
        margin-top: 1rem;
        color: var(--text-muted);
        font-size: 0.95rem;
    }

.modal-footer {
    border: none;
    padding: 0 1.5rem 1.5rem;
    justify-content: center;
}

    .modal-footer .btn {
        padding: 0.5rem 2rem;
        border-radius: 50px;
    }

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
    background: var(--dark-bg);
    color: #94a3b8;
    padding: 60px 0 30px;
    margin-top: 60px;
}

    .footer h5 {
        color: #fff;
        font-weight: 700;
        margin-bottom: 1.25rem;
        font-size: 1.1rem;
    }

    .footer p {
        font-size: 0.95rem;
        opacity: 0.7;
    }

    .footer ul li {
        margin-bottom: 0.5rem;
    }

        .footer ul li a {
            color: #94a3b8;
            transition: var(--transition);
            font-size: 0.95rem;
        }

            .footer ul li a:hover {
                color: #fff;
                padding-left: 4px;
            }

    .footer hr {
        opacity: 0.1;
        margin: 2rem 0;
    }

    .footer .copyright {
        font-size: 0.85rem;
        opacity: 0.5;
        text-align: center;
    }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 991.98px) {
    .hero-section h1 {
        font-size: 2.75rem;
    }

    .hero-section {
        padding: 80px 0 60px;
        text-align: center;
    }

        .hero-section .lead {
            margin-left: auto;
            margin-right: auto;
        }

        .hero-section .d-flex {
            justify-content: center;
            flex-wrap: wrap;
        }

        .hero-section .badge {
            display: inline-block;
            margin: 0.25rem;
        }

    .section-title {
        font-size: 2rem;
    }

    .features-hero h1 {
        font-size: 2.5rem;
    }

    .pricing-hero h1 {
        font-size: 2.5rem;
    }

    .download-hero h1 {
        font-size: 2.5rem;
    }

    .feature-detail-card {
        padding: 1.75rem;
    }

    .download-card .card-body {
        padding: 2rem 1.5rem;
    }
}

@media (max-width: 767.98px) {
    .section-title {
        font-size: 2rem;
    }

    .hero-section h1 {
        font-size: 2.25rem;
        text-align: center;
    }

    .hero-section {
        padding: 80px 0 40px;
    }

    .hero-section {
        padding: 80px 0 40px;
    }

    .feature-card {
        padding: 1.5rem 1rem;
    }

    .gallery-card img {
        height: 180px;
    }

    .footer {
        padding: 40px 0 20px;
        text-align: center;
    }

    .features-hero {
        padding: 80px 0 40px;
        text-align: center;
    }

        .features-hero h1 {
            font-size: 2rem;
        }

    .pricing-hero {
        padding: 80px 0 40px;
        text-align: center;
    }

        .pricing-hero h1 {
            font-size: 2rem;
        }

    .price-card {
        padding: 1.5rem 1rem;
    }

        .price-card .price .display-4 {
            font-size: 2.5rem;
        }

    .download-hero {
        padding: 80px 0 40px;
        text-align: center;
    }

        .download-hero h1 {
            font-size: 2rem;
        }

    .download-card .card-body {
        padding: 1.5rem 1rem;
    }

    .download-card h3 {
        font-size: 1.25rem;
    }

    .version-item {
        flex-wrap: wrap;
        gap: 0.5rem;
    }

    .changelog-card .card-header {
        flex-wrap: wrap;
        gap: 0.5rem;
    }
}

@media (max-width: 575.98px) {
    .hero-section h1 {
        font-size: 1.75rem;
    }

    .hero-section .btn {
        font-size: 0.9rem;
        padding: 0.5rem 1rem;
    }

    .gallery-card img {
        height: 160px;
    }

    .feature-detail-card {
        padding: 1.25rem;
    }

        .feature-detail-card .icon-wrapper {
            width: 56px;
            height: 56px;
        }

            .feature-detail-card .icon-wrapper i {
                font-size: 1.5rem;
            }

    .price-card .btn {
        font-size: 0.9rem;
        padding: 0.5rem 1rem;
    }
}