/* ===== Reset & Base ===== */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Vazirmatn', sans-serif;
            background: #f8fafc;
            color: #0b1e33;
            line-height: 1.7;
            transition: all 0.3s ease;
        }

            /* زبان فارسی */
            body.lang-fa {
                font-family: 'Vazirmatn', sans-serif;
                direction: rtl;
                text-align: right;
            }

            /* زبان انگلیسی */
            body.lang-en {
                font-family: 'Inter', sans-serif;
                direction: ltr;
                text-align: left;
            }

            /* زبان عربی */
            body.lang-ar {
                font-family: 'Cairo', sans-serif;
                direction: rtl;
                text-align: right;
            }

        .container {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ===== Language Switcher ===== */
        .lang-switcher {
            display: flex;
            gap: 4px;
            background: #eef2f6;
            padding: 4px;
            border-radius: 30px;
        }

            .lang-switcher button {
                padding: 6px 14px;
                border: none;
                border-radius: 30px;
                font-size: 13px;
                font-weight: 600;
                cursor: pointer;
                transition: all 0.3s ease;
                background: transparent;
                color: #4a5b6e;
                font-family: inherit;
            }

                .lang-switcher button:hover {
                    background: rgba(37, 99, 235, 0.1);
                    color: #2563eb;
                }

                .lang-switcher button.active {
                    background: #2563eb;
                    color: white;
                    box-shadow: 0 2px 12px rgba(37, 99, 235, 0.3);
                }

                .lang-switcher button .lang-label {
                    font-size: 10px;
                    opacity: 0.7;
                    display: block;
                }

        /* ===== Header / Navbar ===== */
        .navbar {
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(226, 232, 240, 0.6);
            padding: 16px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.04);
        }

            .navbar .container {
                display: flex;
                justify-content: space-between;
                align-items: center;
                flex-wrap: wrap;
                gap: 12px;
            }

            .navbar .logo {
                display: flex;
                align-items: center;
                gap: 10px;
                font-size: 26px;
                font-weight: 900;
                color: #0b1e33;
                text-decoration: none;
            }

                .navbar .logo i {
                    font-size: 32px;
                    background: linear-gradient(135deg, #2563eb, #7c3aed);
                    -webkit-background-clip: text;
                    -webkit-text-fill-color: transparent;
                    background-clip: text;
                }

                .navbar .logo span {
                    background: linear-gradient(135deg, #2563eb, #7c3aed);
                    -webkit-background-clip: text;
                    -webkit-text-fill-color: transparent;
                    background-clip: text;
                }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

            .nav-links a {
                color: #4a5b6e;
                text-decoration: none;
                font-size: 14px;
                font-weight: 500;
                padding: 8px 16px;
                border-radius: 30px;
                transition: all 0.2s ease;
            }

                .nav-links a:hover {
                    background: #eef2f6;
                    color: #2563eb;
                }

            .nav-links .btn-primary-nav {
                background: linear-gradient(135deg, #2563eb, #7c3aed);
                color: white;
                padding: 8px 22px;
                border-radius: 30px;
                font-weight: 600;
            }

                .nav-links .btn-primary-nav:hover {
                    transform: translateY(-2px);
                    box-shadow: 0 8px 24px rgba(37, 99, 235, 0.3);
                    background: linear-gradient(135deg, #1d4ed8, #6d28d9);
                }

        /* ===== Hero / About ===== */
        .hero {
            padding: 60px 0 40px;
            text-align: center;
        }

            .hero .badge {
                display: inline-block;
                background: #dbeafe;
                color: #1d4ed8;
                font-size: 13px;
                font-weight: 600;
                padding: 4px 18px;
                border-radius: 30px;
                margin-bottom: 16px;
            }

            .hero h1 {
                font-size: 44px;
                font-weight: 900;
                line-height: 1.2;
                margin-bottom: 16px;
            }

                .hero h1 span {
                    background: linear-gradient(135deg, #2563eb, #7c3aed);
                    -webkit-background-clip: text;
                    -webkit-text-fill-color: transparent;
                    background-clip: text;
                }

            .hero p {
                font-size: 18px;
                color: #4a5b6e;
                max-width: 700px;
                margin: 0 auto 24px;
            }

            .hero .features {
                display: flex;
                justify-content: center;
                gap: 30px;
                flex-wrap: wrap;
                margin-top: 20px;
            }

                .hero .features .feat {
                    display: flex;
                    align-items: center;
                    gap: 8px;
                    font-size: 14px;
                    color: #1e2b3c;
                    background: white;
                    padding: 8px 20px;
                    border-radius: 30px;
                    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
                }

                    .hero .features .feat i {
                        color: #2563eb;
                    }

        /* ===== Sections ===== */
        section {
            padding: 60px 0;
            border-bottom: 1px solid #e9edf2;
        }

            section:last-of-type {
                border-bottom: none;
            }

        .section-title {
            font-size: 30px;
            font-weight: 800;
            margin-bottom: 12px;
            text-align: center;
        }

            .section-title i {
                color: #2563eb;
                margin-left: 10px;
            }

        body.lang-en .section-title i {
            margin-left: 0;
            margin-right: 10px;
        }

        .section-desc {
            text-align: center;
            color: #4a5b6e;
            max-width: 600px;
            margin: 0 auto 36px;
            font-size: 16px;
        }

        /* ===== Cards Grid ===== */
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

        .card {
            background: white;
            border-radius: 24px;
            padding: 30px 28px;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
            border: 1px solid #eef2f6;
            transition: all 0.3s ease;
        }

            .card:hover {
                transform: translateY(-4px);
                box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
                border-color: #dbeafe;
            }

            .card .icon {
                font-size: 36px;
                margin-bottom: 12px;
                display: inline-block;
                background: #eff6ff;
                padding: 12px;
                border-radius: 16px;
                color: #2563eb;
            }

            .card h3 {
                font-size: 18px;
                font-weight: 700;
                margin-bottom: 8px;
            }

            .card p {
                color: #4a5b6e;
                font-size: 14px;
                margin-bottom: 16px;
            }

            .card .btn-card {
                display: inline-block;
                padding: 8px 24px;
                border-radius: 30px;
                font-size: 14px;
                font-weight: 600;
                text-decoration: none;
                transition: all 0.2s ease;
                border: 2px solid #2563eb;
                color: #2563eb;
                background: transparent;
            }

                .card .btn-card:hover {
                    background: #2563eb;
                    color: white;
                }

                .card .btn-card.primary {
                    background: linear-gradient(135deg, #2563eb, #7c3aed);
                    color: white;
                    border: none;
                }

                    .card .btn-card.primary:hover {
                        transform: scale(1.02);
                        box-shadow: 0 8px 24px rgba(37, 99, 235, 0.3);
                    }

        /* ===== Form Styles ===== */
        .form-container {
            max-width: 700px;
            margin: 0 auto;
            background: white;
            padding: 40px 36px;
            border-radius: 28px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
            border: 1px solid #eef2f6;
        }

            .form-container .form-title {
                font-size: 20px;
                font-weight: 700;
                margin-bottom: 4px;
            }

            .form-container .form-sub {
                color: #4a5b6e;
                font-size: 14px;
                margin-bottom: 24px;
            }

        .form-group {
            margin-bottom: 18px;
        }

            .form-group label {
                display: block;
                font-size: 14px;
                font-weight: 600;
                margin-bottom: 4px;
                color: #1e2b3c;
            }

                .form-group label .required {
                    color: #ef4444;
                }

            .form-group input,
            .form-group select,
            .form-group textarea {
                width: 100%;
                padding: 12px 16px;
                border: 2px solid #e2e8f0;
                border-radius: 14px;
                font-size: 14px;
                font-family: inherit;
                transition: all 0.2s ease;
                background: #fafbfc;
            }

                .form-group input:focus,
                .form-group select:focus,
                .form-group textarea:focus {
                    border-color: #2563eb;
                    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.08);
                    background: white;
                    outline: none;
                }

            .form-group textarea {
                min-height: 100px;
                resize: vertical;
            }

        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }

        .btn-submit-form {
            width: 100%;
            padding: 14px;
            font-family: inherit;
            font-size: 16px;
            font-weight: 700;
            color: white;
            background: linear-gradient(135deg, #2563eb, #7c3aed);
            border: none;
            border-radius: 30px;
            cursor: pointer;
            transition: all 0.3s ease;
            margin-top: 8px;
        }

            .btn-submit-form:hover {
                transform: translateY(-2px);
                box-shadow: 0 8px 24px rgba(37, 99, 235, 0.3);
            }

            .btn-submit-form:disabled {
                opacity: 0.6;
                cursor: not-allowed;
                transform: none;
            }

        .status-msg {
            padding: 12px 16px;
            border-radius: 14px;
            font-size: 14px;
            display: none;
            margin-top: 12px;
        }

            .status-msg.success {
                display: block;
                background: #dcfce7;
                color: #166534;
                border: 1px solid #86efac;
            }

            .status-msg.error {
                display: block;
                background: #fee2e2;
                color: #991b1b;
                border: 1px solid #fca5a5;
            }

            .status-msg.loading {
                display: block;
                background: #e0e7ff;
                color: #3730a3;
                border: 1px solid #a5b4fc;
            }

        /* ===== Video Section ===== */
        .video-wrapper {
            max-width: 800px;
            margin: 0 auto;
            border-radius: 28px;
            overflow: hidden;
            box-shadow: 0 8px 40px rgba(0, 0, 0, 0.1);
            background: #0b1e33;
            aspect-ratio: 16 / 9;
        }

            .video-wrapper iframe {
                width: 100%;
                height: 100%;
                border: none;
                display: block;
            }

        /* ===== CTA Section ===== */
        .cta-section {
            background: linear-gradient(135deg, #0b1e33, #1a2f4a);
            border-radius: 32px;
            padding: 50px 40px;
            text-align: center;
            color: white;
            margin-top: 20px;
        }

            .cta-section h2 {
                font-size: 32px;
                font-weight: 800;
                margin-bottom: 12px;
            }

                .cta-section h2 i {
                    color: #60a5fa;
                }

            .cta-section p {
                font-size: 16px;
                opacity: 0.8;
                max-width: 500px;
                margin: 0 auto 24px;
            }

        .btn-cta-main {
            display: inline-flex;
            align-items: center;
            gap: 14px;
            padding: 18px 48px;
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
            border: none;
            border-radius: 50px;
            cursor: pointer;
            transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
            box-shadow: 0 8px 30px rgba(79, 172, 254, 0.4);
            position: relative;
            overflow: hidden;
            animation: float 3s ease-in-out infinite;
        }

            .btn-cta-main:hover {
                transform: translateY(-5px) scale(1.03);
                box-shadow: 0 15px 45px rgba(79, 172, 254, 0.6);
            }

            .btn-cta-main:active {
                transform: scale(0.95);
            }

            .btn-cta-main i {
                transition: transform 0.3s ease;
            }

            .btn-cta-main:hover i {
                transform: translateX(-8px);
            }

        .sparkle {
            position: absolute;
            right: -5px;
            top: -10px;
            font-size: 18px;
            animation: sparkle 1.5s ease-in-out infinite;
        }

        @keyframes float {
            0%, 100% {
                transform: translateY(0px);
            }

            50% {
                transform: translateY(-8px);
            }
        }

        @keyframes sparkle {
            0%, 100% {
                transform: scale(1) rotate(0deg);
                opacity: 1;
            }

            50% {
                transform: scale(1.5) rotate(180deg);
                opacity: 0.5;
            }
        }

        /* افکت شیشه‌ای */
        .btn-cta-main::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
            transition: left 0.6s ease;
        }

        .btn-cta-main:hover::before {
            left: 100%;
        }

        .cta-section .btn-cta {
            display: inline-block;
            padding: 16px 48px;
            font-size: 18px;
            font-weight: 700;
            color: #0b1e33;
            background: white;
            border-radius: 30px;
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
            font-family: inherit;
        }

            .cta-section .btn-cta:hover:not(:disabled) {
                transform: translateY(-3px) scale(1.02);
                box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
            }

            .cta-section .btn-cta:disabled {
                opacity: 0.6;
                cursor: not-allowed;
                transform: none;
            }

            .cta-section .btn-cta i {
                margin-left: 10px;
            }

        body.lang-en .cta-section .btn-cta i {
            margin-left: 0;
            margin-right: 10px;
        }

        /* ===== Status Message for CTA ===== */
        .cta-status {
            margin-top: 16px;
            padding: 14px 20px;
            border-radius: 16px;
            display: none;
            font-size: 14px;
            font-weight: 500;
            text-align: center;
        }

            .cta-status.show {
                display: block;
            }

            .cta-status.checking {
                background: #e0e7ff;
                color: #3730a3;
                border: 1px solid #a5b4fc;
            }

            .cta-status.offline {
                background: #fef3c7;
                color: #92400e;
                border: 1px solid #fcd34d;
            }

            .cta-status.online {
                background: #dcfce7;
                color: #166534;
                border: 1px solid #86efac;
            }

            .cta-status i {
                margin-left: 8px;
            }

        body.lang-en .cta-status i {
            margin-left: 0;
            margin-right: 8px;
        }

        /* ===== Footer ===== */
        .footer {
            text-align: center;
            padding: 32px 0 24px;
            font-size: 13px;
            color: #94a3b8;
            border-top: 1px solid #e9edf2;
            margin-top: 20px;
        }

            .footer a {
                color: #2563eb;
                text-decoration: none;
            }

        /* ===== Responsive ===== */
        @media (max-width: 768px) {
            .navbar .container {
                flex-direction: column;
                align-items: center;
            }

            .nav-links {
                justify-content: center;
            }

            .hero h1 {
                font-size: 30px;
            }

            .hero .features {
                flex-direction: column;
                align-items: center;
            }

            .form-row {
                grid-template-columns: 1fr;
            }

            .form-container {
                padding: 24px 18px;
            }

            .cta-section {
                padding: 32px 20px;
            }

                .cta-section h2 {
                    font-size: 24px;
                }

            section {
                padding: 40px 0;
            }

            .lang-switcher button {
                padding: 4px 10px;
                font-size: 11px;
            }

            .cta-section .btn-cta {
                padding: 14px 28px;
                font-size: 16px;
            }
        }

        @media (max-width: 480px) {
            .nav-links a {
                font-size: 12px;
                padding: 6px 12px;
            }

            .hero h1 {
                font-size: 24px;
            }

            .section-title {
                font-size: 22px;
            }

            .cta-section .btn-cta {
                padding: 12px 24px;
                font-size: 14px;
            }
        }