:root {
    --primary-color: #4CAF50;
    --primary-dark: #388E3C;
    --primary-light: #E8F5E9;
    --bg-color: #f8f9fa;
    --card-bg: #ffffff;
    --text-main: #2d3436;
    --text-muted: #636e72;
    --border-color: #dfe6e9;
    --success-color: #2E7D32;
    --shadow-sm: 0 4px 6px rgba(0,0,0,0.05);
    --shadow-md: 0 10px 20px rgba(0,0,0,0.08);
    --radius: 16px;
    --container-width: 1200px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Vazirmatn', sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    overflow-x: hidden;
    line-height: 1.6;
}

.background-pattern {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: radial-gradient(var(--primary-color) 1px, transparent 1px);
    background-size: 40px 40px;
    opacity: 0.05;
    z-index: -1;
}

/* Navbar */
.navbar {
    background: #fff;
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-logo img {
    height: 45px;
    width: auto;
}

.nav-logo span {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-dark);
}

.nav-links {
    display: flex;
    gap: 25px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-muted);
    font-weight: 500;
    transition: color 0.2s;
}

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

/* Hero Section */
.hero {
    padding: 60px 20px;
}

.hero-container {
    max-width: var(--container-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.hero-content {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.hero-title {
    font-size: 2.8rem;
    font-weight: 800;
    color: var(--primary-dark);
    line-height: 1.3;
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 20px;
}

/* Interactive Card */
.interactive-card {
    background-color: var(--card-bg);
    padding: 35px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    border-top: 6px solid var(--primary-color);
}

.step {
    display: none;
    width: 100%;
    animation: fadeIn 0.4s ease-out;
}

.step.active {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.btn-primary, .btn-success {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 14px 28px;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(76, 175, 80, 0.3);
}

.btn-success {
    background-color: var(--success-color);
    margin-top: 20px;
}

.btn-success:hover {
    background-color: #1b5e20;
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(46, 125, 50, 0.3);
}

.input-group {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.input-group label {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-main);
}

.input-group input {
    padding: 14px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1.1rem;
    text-align: left;
    direction: ltr;
    transition: border-color 0.2s;
    outline: none;
}

.input-group input:focus {
    border-color: var(--primary-color);
}

.privacy-notice {
    font-size: 0.85rem;
    color: var(--text-muted);
    text-align: center;
    margin-top: 10px;
}

.alert-box {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    padding: 20px;
    border-radius: 8px;
    width: 100%;
}

.alert-box.success {
    background-color: var(--primary-light);
    border: 1px solid var(--primary-color);
    color: var(--primary-dark);
}

.alert-icon {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
    margin-top: 3px;
}

.alert-text {
    font-size: 0.95rem;
    font-weight: 600;
}

/* Progress Bar */
.progress-container {
    width: 100%;
    margin-top: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.progress-text {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--primary-dark);
    display: flex;
    justify-content: space-between;
}

.progress-bar-bg {
    width: 100%;
    height: 12px;
    background-color: var(--border-color);
    border-radius: 10px;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    width: 0%;
    background-color: var(--success-color);
    border-radius: 10px;
    transition: width 0.1s linear;
}

/* Hero Image */
.hero-image-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
}

.app-mockup {
    max-width: 100%;
    height: auto;
    max-height: 600px;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    transform: perspective(1000px) rotateY(-10deg);
    transition: transform 0.5s ease;
}

.app-mockup:hover {
    transform: perspective(1000px) rotateY(0deg);
}

/* Features Section */
.features {
    background-color: #fff;
    padding: 80px 20px;
    border-top: 1px solid var(--border-color);
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 50px;
}

.section-header h2 {
    font-size: 2.2rem;
    color: var(--primary-dark);
    margin-bottom: 15px;
}

.section-header p {
    color: var(--text-muted);
    font-size: 1.1rem;
}

.features-grid {
    max-width: var(--container-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--bg-color);
    padding: 40px 30px;
    border-radius: var(--radius);
    text-align: center;
    transition: transform 0.3s;
    border: 1px solid var(--border-color);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-light);
}

.feature-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 20px;
    background-color: var(--primary-light);
    color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 15px;
}

.feature-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--text-main);
}

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

/* Footer */
.footer {
    background-color: #2d3436;
    color: #fff;
    padding: 60px 20px 20px;
}

.footer-container {
    max-width: var(--container-width);
    margin: 0 auto;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-about p, .footer-contact p {
    color: #b2bec3;
    font-size: 0.9rem;
    margin-bottom: 10px;
}

.footer-contact h3, .footer-links h3 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: #fff;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    color: #b2bec3;
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.2s;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #636e72;
    color: #b2bec3;
    font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 900px) {
    .hero-container {
        grid-template-columns: 1fr;
    }
    
    .hero-content {
        order: 2;
    }
    
    .hero-image-wrapper {
        order: 1;
        margin-bottom: 30px;
    }

    .app-mockup {
        max-height: 400px;
    }
}

@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
    }

    .hero-title {
        font-size: 2.2rem;
    }
    
    .nav-links {
        display: none; /* simple mobile header */
    }
}

/* Toast Notification */
.toast-error {
    position: fixed;
    bottom: -100px;
    left: 50%;
    transform: translateX(-50%);
    background-color: #e74c3c;
    color: white;
    padding: 16px 24px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(231, 76, 60, 0.4);
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 1000;
    transition: bottom 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    font-weight: 500;
    min-width: 300px;
}

.toast-error.show {
    bottom: 30px;
}

.toast-error svg {
    width: 24px;
    height: 24px;
}