/* CSS Variables for consistent theming */
        :root {
            --primary-color: #000000;
            --accent-color: #f369e1;
            --background-color: #ffffff;
            --light-bg: #eeeeee;
            --text-color: #000000;
            --light-text: #b0b0b0;
            --border-radius: 30px;
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 2rem;
            --spacing-lg: 4rem;
            --spacing-xl: 8rem;
            --container-width: 1200px;
            --font-size-sm: 0.875rem;
            --font-size-base: 1rem;
            --font-size-lg: 1.25rem;
            --font-size-xl: 1.5rem;
            --font-size-2xl: 2.5rem;
            --font-size-3xl: 3.5rem;
            --font-size-4xl: 5rem;
        }

        /* Reset and Base Styles */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Inter', sans-serif;
            line-height: 1.6;
            color: var(--text-color);
            background-color: var(--background-color);
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            text-decoration: none;
            color: inherit;
        }

        button {
            cursor: pointer;
            font-family: inherit;
        }

        /* Accessibility Improvements */
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }

        /* Focus styles for keyboard navigation */
        button:focus-visible,
        a:focus-visible {
            outline: 2px solid var(--accent-color);
            outline-offset: 2px;
        }

        /* Container */
        .container {
            width: 100%;
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 var(--spacing-sm);
        }

        /* Header and Navigation */
        .announcement-bar {
            background-color: var(--primary-color);
            color: white;
            text-align: center;
            padding: 10px 0;
            font-size: 14px;
            position: relative;
            overflow: hidden;
        }

        .announcement-bar::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
            animation: shimmer 3s infinite;
        }

        @keyframes shimmer {
            0% {
                left: -100%;
            }

            100% {
                left: 100%;
            }
        }

        .header {
            padding: var(--spacing-sm) 0;
            position: sticky;
            top: 0;
            background-color: var(--background-color);
            z-index: 100;
        }

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

        .logo {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
        }

        .logo__image {
            width: 42px;
            height: 42px;
        }

        .logo__text {
            font-weight: 500;
            font-size: var(--font-size-lg);
        }

        .nav {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
        }

        .nav__link {
            font-weight: 500;
            transition: opacity 0.3s ease;
        }

        .nav__link:hover {
            opacity: 0.7;
        }

        .btn {
            display: inline-block;
            background-color: var(--primary-color);
            color: white;
            padding: 0.75rem 1.5rem;
            border-radius: 50px;
            font-weight: 500;
            transition: all 0.3s ease;
            border: none;
        }

        .btn:hover {
            opacity: 0.9;
            transform: translateY(-2px);
        }

        /* Hero Section */
        .hero-section {
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            padding: 20px;
            position: relative;
        }

        .hero__images {
            position: relative;
            display: flex;
            justify-content: space-between;
            width: 100%;
            max-width: 1200px;
            align-items: flex-start;
            margin-top: 20px;
            padding: 0 5%;
            gap: 20px;
        }

        .hero__image-left {
            width: 35%;
            max-width: 400px;
            border-radius: 20px;
            align-self: flex-start;
        }

        .hero__image-right {
            width: 35%;
            max-width: 305px;
            border-radius: 20px;
            align-self: flex-start;
        }

        .hero__image-left {
            transform: rotate(-5deg);
        }

        .hero__image-right {
            transform: rotate(5deg);
        }


        /* --- این بخش تغییر کرده تا دکمه دقیقاً وسط شود --- */
        .hero__cta-corner {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            /* وسط‌چین افقی و عمودی */
            z-index: 10;
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .btn {
            background: black;
            color: white;
            border: none;
            padding: 15px 30px;
            border-radius: 30px;
            font-weight: bold;
            font-size: 18px;
            cursor: pointer;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
            transition: all 0.3s ease;
        }

        .btn:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
            background: black;
        }

        .hero-content {
            text-align: center;
            margin-bottom: 60px;
            max-width: 800px;
            padding: 0 20px;
        }

        .hero-title {
            font-size: clamp(2rem, 5vw, 3.5rem);
            font-weight: 900;
            margin-bottom: 20px;
            background: black;
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1.2;
        }

        .hero-subtitle {
            font-size: clamp(1rem, 3vw, 1.5rem);
            margin-bottom: 30px;
            opacity: 0.9;
            line-height: 1.5;
        }

        /* مخفی کردن عکس‌ها در تبلت و موبایل */
        @media (max-width: 1024px) {

            .hero__image-left,
            .hero__image-right {
                display: none;
                /* مخفی کردن عکس‌ها در تبلت و موبایل */
            }

            .hero__images {
                justify-content: center;
            }

            /* وقتی عکس‌ها مخفی هستند، دکمه را به صورت نسبی و وسط‌چین افقی قرار می‌دهیم */
            .hero__cta-corner {
                position: relative;
                top: 0;
                left: 0;
                transform: none;
                margin: 30px auto 0;
            }
        }

        /* استایل اضافی برای موبایل */
        @media (max-width: 768px) {
            .hero-section {
                justify-content: flex-start;
                padding-top: 80px;
            }

            .hero-content {
                margin-bottom: 40px;
            }

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

        /* Features Section */
        .features {
            padding: var(--spacing-xl) 0;
            background-color: var(--light-bg);
        }

        .features__header {
            text-align: center;
            margin-bottom: var(--spacing-xl);
        }

        .features__subtitle {
            font-size: var(--font-size-sm);
            margin-bottom: var(--spacing-sm);
        }

        .features__title {
            font-size: var(--font-size-4xl);
            font-weight: 900;
            line-height: 1.2;
        }

        .features__grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: var(--spacing-md);
            margin-bottom: var(--spacing-lg);
        }

        .feature-card {
            background: white;
            border-radius: 16px;
            padding: 40px 30px;
            text-align: center;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            display: flex;
            flex-direction: column;
            align-items: center;
            height: 100%;
        }

        .feature-card:hover {
            transform: translateY(-5px);
        }

        .feature-card__icon {
            width: 300px;
            height: 300px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 30px;
            border-radius: 20px;
            padding: 20px;
        }

        .feature-card__icon img {
            width: 250px;
            height: 250px;
            object-fit: contain;
        }

        .feature-card__title {
            font-size: var(--font-size-2xl);
            font-weight: 500;
            margin-bottom: var(--spacing-sm);
        }

        /* Course Preview Section */
        .course-preview {
            padding: var(--spacing-xl) 0;
        }

        .course-card {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-lg);
            background-color: var(--light-bg);
            border-radius: var(--border-radius);
            padding: var(--spacing-lg);
            margin-bottom: var(--spacing-xl);
        }

        .course-card__content {
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .course-card__icon {
            width: 128px;
            height: 128px;
            background-color: var(--light-bg);
            border-radius: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: var(--spacing-md);
        }

        .course-card__title {
            font-size: var(--font-size-2xl);
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
        }

        .course-card__description {
            margin-bottom: var(--spacing-md);
        }

        .course-card__cta {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
        }

        .course-card__cta-circle {
            width: 50px;
            height: 50px;
            background-color: var(--light-bg);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .course-card__image {
            display: flex;
            align-items: center;
            justify-content: center;
        }

        /* About Section */
        .about {
            padding: var(--spacing-xl) 0;
            background-color: var(--light-bg);
        }

        .about__header {
            text-align: center;
            margin-bottom: var(--spacing-xl);
        }

        .about__subtitle {
            font-size: var(--font-size-sm);
            margin-bottom: var(--spacing-sm);
        }

        .about__title {
            font-size: var(--font-size-4xl);
            font-weight: 900;
            line-height: 1.2;
        }

        .stats {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: var(--spacing-lg);
            margin-bottom: var(--spacing-xl);
        }

        .stat-card {
            background-color: var(--background-color);
            border-radius: var(--border-radius);
            padding: var(--spacing-md);
            text-align: center;
        }

        .stat-card__value {
            font-size: var(--font-size-3xl);
            font-weight: 900;
            margin-bottom: var(--spacing-xs);
        }

        .stat-card__label {
            font-size: var(--font-size-sm);
        }

        /* Alumni Section */
        .alumni {
            padding: var(--spacing-xl) 0;
        }

        .alumni__header {
            text-align: center;
            margin-bottom: var(--spacing-xl);
        }

        .alumni__title {
            font-size: var(--font-size-4xl);
            font-weight: 900;
            line-height: 1.2;
            margin-bottom: var(--spacing-md);
        }

        .alumni__description {
            font-size: var(--font-size-xl);
            font-weight: 600;
            max-width: 800px;
            margin: 0 auto;
            letter-spacing: -0.02em;
        }

        .alumni__image {
            width: 100%;
            border-radius: var(--border-radius);
            margin-bottom: var(--spacing-xl);
        }

        /* Features Highlight */
        .features-highlight {
            padding: var(--spacing-xl) 0;
            background-color: var(--light-bg);
        }

        .features-highlight__grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: var(--spacing-md);
        }

        .feature-highlight {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            padding: var(--spacing-md);
            background-color: var(--background-color);
            border: 1px solid var(--light-bg);
            border-radius: var(--border-radius);
        }

        .feature-highlight__icon {
            flex-shrink: 0;
            width: 35px;
        }

        .feature-highlight__text {
            font-size: var(--font-size-lg);
            font-weight: 600;
            letter-spacing: -0.02em;
        }

        /* Footer */
        .footer {
            padding: var(--spacing-xl) 0 var(--spacing-md);
            background-color: var(--light-bg);
        }

        .footer__main {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: var(--spacing-lg);
            margin-bottom: var(--spacing-lg);
        }

        .footer__brand {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }

        .footer__logo {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
        }

        .footer__logo-image {
            width: 42px;
            height: 42px;
        }

        .footer__logo-text {
            font-weight: 500;
        }

        .footer__copyright {
            color: var(--light-text);
            font-size: var(--font-size-sm);
            font-weight: 600;
            letter-spacing: -0.02em;
        }

        .footer__links {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-xs);
        }

        .footer__link {
            color: var(--light-text);
            font-size: var(--font-size-sm);
            font-weight: 600;
            letter-spacing: -0.02em;
            transition: color 0.3s ease;
        }

        .footer__link:hover {
            color: var(--text-color);
        }

        .footer__divider {
            border: none;
            border-top: 1px dashed #a3a3a3;
            margin: var(--spacing-lg) 0;
        }

        .footer__payment {
            display: flex;
            justify-content: center;
            margin-top: var(--spacing-lg);
            width: 150px;
        }
        

        /* Responsive Design */
        @media (max-width: 1024px) {
            :root {
                --font-size-4xl: 4rem;
                --font-size-3xl: 3rem;
                --font-size-2xl: 2rem;
            }

            .hero__title,
            .features__title,
            .about__title,
            .alumni__title {
                font-size: var(--font-size-3xl);
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacing-xl: 4rem;
                --spacing-lg: 2rem;
                --font-size-4xl: 3rem;
                --font-size-3xl: 2.5rem;
                --font-size-2xl: 1.75rem;
            }

            .header__inner {
                flex-direction: column;
                gap: var(--spacing-sm);
            }

            .nav {
                flex-wrap: wrap;
                justify-content: center;
            }

            .hero__images {
                flex-direction: column;
                gap: var(--spacing-md);
            }

            .hero__image-left,
            .hero__image-right {
                width: 80%;
            }

            .course-card {
                grid-template-columns: 1fr;
            }

            .features-highlight__grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 480px) {
            :root {
                --font-size-4xl: 2.5rem;
                --font-size-3xl: 2rem;
                --font-size-2xl: 1.5rem;
                --font-size-xl: 1.25rem;
            }

            .btn {
                padding: 0.5rem 1rem;
                font-size: var(--font-size-sm);
            }

            .feature-card {
                padding: var(--spacing-sm);
            }

            .footer__main {
                grid-template-columns: 1fr;
                text-align: center;
            }

            .footer__logo {
                justify-content: center;
            }

            /* Additional mobile optimizations */
            .container {
                padding: 0 1rem;
            }

            .header {
                padding: 1rem 0;
            }

            .nav {
                gap: 0.5rem;
            }

            .nav__link {
                font-size: 0.9rem;
            }

            .hero-section {
                padding: 2rem 1rem;
                min-height: auto;
            }

            .hero-title {
                font-size: 2rem;
                margin-bottom: 1rem;
            }

            .hero-subtitle {
                font-size: 1.1rem;
            }

            .features {
                padding: 3rem 0;
            }

            .course-preview {
                padding: 3rem 0;
            }

            .about {
                padding: 3rem 0;
            }

            .alumni {
                padding: 3rem 0;
            }

            .features-highlight {
                padding: 3rem 0;
            }

            .footer {
                padding: 2rem 0 1rem;
            }
        }

        /* Extra small devices */
        @media (max-width: 360px) {
            .hero-title {
                font-size: 1.8rem;
            }

            .hero-subtitle {
                font-size: 1rem;
            }

            .btn {
                padding: 0.6rem 1.2rem;
                font-size: 0.85rem;
            }

            .feature-card__icon {
                width: 200px;
                height: 200px;
            }

            .feature-card__icon img {
                width: 150px;
                height: 150px;
            }
        }

        /* Touch-friendly interactions */
        @media (hover: none) and (pointer: coarse) {
            .btn:hover {
                transform: none;
            }

            .feature-card:hover {
                transform: none;
            }

            .nav__link:hover {
                opacity: 1;
            }
        }

        /* High contrast mode support */
        @media (prefers-contrast: high) {
            :root {
                --primary-color: #000000;
                --accent-color: #ffffff;
                --background-color: #ffffff;
                --text-color: #000000;
            }
        }

        /* Reduced motion support */
        @media (prefers-reduced-motion: reduce) {
            * {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
            }

            .announcement-bar::before {
                animation: none;
            }
        }

        /* Print styles */
        @media print {
            .announcement-bar,
            .header,
            .footer,
            .btn {
                display: none !important;
            }

            body {
                font-size: 12pt;
                line-height: 1.4;
            }

            .container {
                max-width: none;
                padding: 0;
            }
        }