/* --- Global Styles & Light Blue / White Theme --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
    scroll-behavior: smooth;
}

:root {
    --primary-blue: #0088cc;      /* آبی روشن و شاداب */
    --accent-blue: #33a6cc;       /* آبی روشن ثانویه */
    --light-bg: #f0f8ff;          /* پس‌زمینه آبی بسیار روشن */
    --white: #ffffff;
    --dark-text: #1e293b;
    --light-text: #64748b;
}

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

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

/* --- Header & Navigation --- */
.navbar {
    background-color: var(--white);
    box-shadow: 0 2px 15px rgba(0, 136, 204, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo a {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-blue);
    text-decoration: none;
}

.logo a span {
    color: var(--accent-blue);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 25px;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--dark-text);
    font-weight: 600;
    transition: color 0.3s;
}

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

.btn-nav {
    background-color: var(--primary-blue);
    color: var(--white) !important;
    padding: 10px 20px;
    border-radius: 6px;
    transition: background 0.3s !important;
}

.btn-nav:hover {
    background-color: var(--accent-blue) !important;
}

/* --- Hamburger Menu (Mobile) --- */
.menu-toggle {
    display: none;
}

.hamburger {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 21px;
    cursor: pointer;
}

.hamburger span {
    height: 3px;
    width: 100%;
    background-color: var(--primary-blue);
    border-radius: 3px;
    transition: all 0.3s ease;
}

/* --- Hero Section --- */
.hero {
    padding: 60px 0;
    background: linear-gradient(135deg, var(--white) 0%, var(--light-bg) 100%);
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.hero-text h1 {
    font-size: 2.5rem;
    color: var(--primary-blue);
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-text p {
    color: var(--light-text);
    margin-bottom: 30px;
}

.hero-buttons {
    display: flex;
    gap: 15px;
}

.btn-primary {
    background-color: var(--primary-blue);
    color: var(--white);
    padding: 12px 25px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
}

.btn-secondary {
    border: 2px solid var(--primary-blue);
    color: var(--primary-blue);
    padding: 12px 25px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
}

/* --- Form Box --- */
.hero-form-box {
    background-color: var(--white);
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 136, 204, 0.15);
    border-top: 5px solid var(--primary-blue);
}

.hero-form-box h3 {
    margin-bottom: 20px;
    color: var(--primary-blue);
}

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #e2e8f0;
    border-radius: 6px;
    outline: none;
    font-size: 0.95rem;
}

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

.btn-submit {
    width: 100%;
    background-color: var(--primary-blue);
    color: var(--white);
    border: none;
    padding: 14px;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s;
}

.btn-submit:hover {
    background-color: var(--accent-blue);
}

/* --- Services Section --- */
.services, .about {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    font-size: 2rem;
    color: var(--primary-blue);
    margin-bottom: 40px;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
}

.service-card {
    background-color: var(--white);
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s;
}

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

.service-card h3 {
    color: var(--primary-blue);
    margin-bottom: 15px;
}

/* --- Features Section --- */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-item {
    background-color: var(--white);
    padding: 25px;
    border-radius: 8px;
}

.feature-item h4 {
    color: var(--primary-blue);
    margin-bottom: 10px;
}

/* --- Footer --- */
footer {
    background-color: var(--white);
    padding: 30px 0;
    border-top: 1px solid #e2e8f0;
    text-align: center;
    color: var(--light-text);
}

footer a {
    color: var(--primary-blue);
    text-decoration: none;
}

/* --- Responsive & Mobile Hamburger Styling --- */
@media (max-width: 900px) {
    .hero-container {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: absolute;
        top: 80px;
        left: 0;
        width: 100%;
        background-color: var(--white);
        box-shadow: 0 10px 15px rgba(0,0,0,0.1);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.4s ease-in-out;
    }

    .nav-links {
        flex-direction: column;
        padding: 20px 0;
        gap: 20px;
    }

    /* Open Hamburger Menu */
    .menu-toggle:checked ~ .nav-menu {
        max-height: 350px;
    }

    /* Animate Hamburger icon to X */
    .menu-toggle:checked ~ .hamburger span:nth-child(1) {
        transform: translateY(9px) rotate(45deg);
    }
    .menu-toggle:checked ~ .hamburger span:nth-child(2) {
        opacity: 0;
    }
    .menu-toggle:checked ~ .hamburger span:nth-child(3) {
        transform: translateY(-9px) rotate(-45deg);
    }
}