@font-face {
    font-family: 'iranyekan';
    src: url('font/woff/iranyekanwebregularfanum.woff') format('woff'),
         url('font/ttf/iranyekanwebregularfanum.ttf') format('truetype');
    font-weight: normal;
}
@font-face {
    font-family: 'iranyekan';
    src: url('font/woff/iranyekanwebboldfanum.woff') format('woff'),
         url('font/ttf/iranyekanwebboldfanum.ttf') format('truetype');
    font-weight: bold;
}
:root {
    --color-yellow: #ffc107;
    --color-yellow-dark: #e0a800;
    --color-black: #1a1a1a;
    --color-dark-gray: #333;
    --color-light-gray: #f5f5f5;
    --color-white: #ffffff;
    --color-text-dark: #1a1a1a;
    --color-text-light: #f8f9fa;
    --color-border: #ddd;
}
body {
    font-family: 'iranyekan';
    margin: 0;
    padding: 0;
    background-color: var(--color-white);
    color: var(--color-text-dark);
    line-height: 1.7;
}
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}
.header {
    background-color: #1a1a1af5;
    padding: 15px 0;
    border-bottom: 2px solid var(--color-yellow);
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}
.header nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo {
    font-size: 24px;
    font-weight: bold;
    color: var(--color-yellow);
}
.menu {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
}
.menu li {
    margin-right: 25px;
}
.menu a {
    text-decoration: none;
    color: var(--color-text-light);
    font-size: 16px;
    font-weight: bold;
    transition: color 0.3s ease;
}
.menu a:hover {
    color: var(--color-yellow);
}
.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--color-white);
    font-size: 28px;
    cursor: pointer;
}
.hero {
    background-color: #1a1a1af5;
    color: var(--color-text-light);
    text-align: center;
    padding: 100px 20px;
}
.hero h1 {
    font-size: 42px;
    margin-bottom: 15px;
    font-weight: bold;
}
.hero p {
    font-size: 20px;
    margin-bottom: 30px;
}
.cta-button {
    background-color: var(--color-yellow);
    color: #1a1a1af5;
    padding: 12px 30px;
    text-decoration: none;
    font-size: 18px;
    font-weight: bold;
    border-radius: 5px;
    transition: background-color 0.3s ease;
}
.cta-button:hover {
    background-color: var(--color-yellow-dark);
}
.features {
    padding: 60px 20px;
    text-align: center;
    background-color: var(--color-white);
}
.features h2 {
    font-size: 32px;
    margin-bottom: 40px;
    color: var(--color-text-dark);
}
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}
.feature-item {
    background-color: var(--color-light-gray);
    padding: 30px;
    border-radius: 8px;
    border: 1px solid var(--color-border);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 16px rgba(0,0,0,0.1);
}
.feature-item h3 {
    font-size: 22px;
    color: #1a1a1af5;
    margin-bottom: 10px;
}
.order-section {
    background-color: var(--color-white);
    padding: 60px 20px;
}
.order-section h2 {
    text-align: center;
    font-size: 32px;
    margin-bottom: 15px;
    color: var(--color-text-dark);
}
.order-section p {
    text-align: center;
    font-size: 18px;
    margin-bottom: 40px;
    color: var(--color-dark-gray);
}
.form-container {
    max-width: 600px;
    margin: 0 auto;
    background-color: var(--color-light-gray);
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    border: 1px solid var(--color-border);
}
.form-group {
    margin-bottom: 20px;
}
.form-group label {
    display: block;
    font-size: 16px;
    font-weight: bold;
    margin-bottom: 8px;
    color: #1a1a1af5;
}
.form-group input[type="text"],
.form-group input[type="tel"] {
    width: 100%;
    padding: 12px;
    font-size: 16px;
    font-family: 'iranyekan';
    border: 1px solid var(--color-border);
    border-radius: 5px;
    box-sizing: border-box;
}
.form-group input:focus {
    border-color: var(--color-yellow);
    outline: none;
    box-shadow: 0 0 5px rgba(255, 193, 7, 0.5);
}
.submit-button {
    width: 100%;
    padding: 15px;
    font-size: 18px;
    font-weight: bold;
    font-family: 'iranyekan';
    color: #1a1a1af5;
    background-color: var(--color-yellow);
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}
.submit-button:hover {
    background-color: var(--color-yellow-dark);
}
.message {
    padding: 15px;
    margin-bottom: 20px;
    border-radius: 5px;
    text-align: center;
    font-weight: bold;
}
.success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}
.error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}
.pricing-section {
    background-color: #1a1a1af5;
    color: var(--color-text-light);
    padding: 60px 20px;
}
.pricing-section h2 {
    text-align: center;
    font-size: 32px;
    margin-bottom: 15px;
    color: var(--color-white);
}
.pricing-section p {
    text-align: center;
    font-size: 18px;
    margin-bottom: 40px;
    color: var(--color-light-gray);
}
.calculator-container {
    max-width: 600px;
    margin: 20px auto;
    background-color: var(--color-white);
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
    color: var(--color-text-dark);
}
.calculator-container .form-group {
    margin-bottom: 25px;
}
.calculator-container .form-group label {
    font-size: 18px;
    font-weight: bold;
    color: #1a1a1af5;
}
.calculator-container input[type="number"] {
    text-align: center;
    direction: ltr;
    font-size: 22px;
    font-weight: bold;
    color: #1a1a1af5;
    padding: 15px;
    width: 100%;
    box-sizing: border-box;
    border: 2px solid var(--color-border);
    border-radius: 5px;
    margin-top: 10px;
    font-family: 'iranyekan';
}
.calculator-container input[type="number"]:focus {
    border-color: var(--color-yellow);
    box-shadow: 0 0 8px rgba(255, 193, 7, 0.5);
    outline: none;
}
.price-results {
    margin-top: 20px;
    border-top: 1px dashed var(--color-border);
    padding-top: 25px;
}
.result-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 18px;
    margin-bottom: 20px;
    color: var(--color-dark-gray);
}
.result-item span:first-child {
    font-weight: bold;
    color: #1a1a1af5;
}
.result-item div {
    display: flex;
    align-items: baseline;
}
.result-item div span:nth-child(1) {
    font-size: 24px;
    font-weight: bold;
    color: #1a1a1af5;
    margin-left: 8px;
}
.result-item div span:last-child {
    font-size: 16px;
    color: var(--color-dark-gray);
}
.result-item.total {
    font-size: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--color-light-gray);
}
.result-item.total span:first-child {
    color: #1a1a1af5;
}
.result-item.total div span:nth-child(1) {
    font-size: 30px;
    color: var(--color-yellow-dark);
}
.footer {
    background-color: #1a1a1af5;
    color: var(--color-text-light);
    text-align: center;
    padding: 30px 20px;
    margin-top: 40px;
    border-top: 2px solid var(--color-yellow);
}
@media (max-width: 768px) {
    .header nav {
        flex-wrap: wrap;
    }
    .menu-toggle {
        display: block;
    }
    .menu {
        display: none;
        flex-direction: column;
        width: 100%;
        background-color: #1a1a1af5;
        position: absolute;
        top: 67px; 
        right: 0;
        border-top: 1px solid var(--color-yellow);
    }
    .menu.active {
        display: flex;
    }
    .menu li {
        margin-right: 0;
        width: 100%;
        text-align: center;
        border-bottom: 1px solid var(--color-dark-gray);
    }
    .menu li:last-child {
        border-bottom: none;
    }
    .menu a {
        padding: 15px 0;
        display: block;
        width: 100%;
    }
    .hero {
        padding: 60px 20px;
    }
    .hero h1 {
        font-size: 32px;
    }
    .hero p {
        font-size: 18px;
    }
    .features, .pricing-section, .order-section {
        padding: 40px 20px;
    }
    .features h2, .pricing-section h2, .order-section h2 {
        font-size: 28px;
    }
    .form-container, .calculator-container {
        padding: 20px;
    }
    .result-item {
        flex-direction: column;
        align-items: flex-start;
    }
    .result-item div {
        margin-top: 5px;
    }
}