/* Site Features Introduction - معرفی امکانات سایت */
:root {
    --intro-primary: #b69d74;
    --intro-primary-dark: #9a7f5a;
    --intro-secondary: #2c3e50;
    --intro-accent: #e74c3c;
    --intro-text-light: #ffffff;
    --intro-text-dark: #333333;
    --intro-shadow: 0 15px 50px rgba(0,0,0,0.4);
    --intro-border-radius: 25px;
    --intro-transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Introduction Overlay */
.site-features-intro-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.85);
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: var(--intro-transition);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.site-features-intro-overlay.show {
    opacity: 1;
    visibility: visible;
}

/* Introduction Modal */
.site-features-intro-modal {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    border-radius: var(--intro-border-radius);
    padding: 0;
    z-index: 10000;
    transform: scale(0.8) translateY(50px);
    transition: var(--intro-transition);
    box-shadow: var(--intro-shadow);
    max-width: 500px;
    width: 100%;
    max-height: 90vh;
    overflow: hidden;
    position: relative;
}

.site-features-intro-overlay.show .site-features-intro-modal {
    transform: scale(1) translateY(0);
}

/* Modal Header */
.intro-modal-header {
    background: linear-gradient(135deg, var(--intro-primary), var(--intro-primary-dark));
    padding: 30px 25px 25px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.intro-modal-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent 30%, rgba(255,255,255,0.1) 50%, transparent 70%);
    animation: shimmer 3s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.intro-modal-title {
    font-size: 23px;
    font-weight: 800;
    color: var(--intro-text-light);
    margin-bottom: 10px;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
    position: relative;
    z-index: 2;
}

.intro-modal-subtitle {
    font-size: 16px;
    color: rgba(255,255,255,0.9);
    line-height: 1.5;
    position: relative;
    z-index: 2;
}

/* Close Button */
.intro-close-btn {
    position: absolute;
    top: 15px;
    left: 15px;
    background: rgba(255,255,255,0.2);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    color: var(--intro-text-light);
    font-size: 20px;
    cursor: pointer;
    transition: var(--intro-transition);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 3;
}

.intro-close-btn:hover {
    background: rgba(255,255,255,0.3);
    transform: scale(1.1);
}

/* Modal Body */
.intro-modal-body {
    padding: 30px 25px;
    max-height: 60vh;
    overflow-y: auto;
}

/* Features Grid */
.intro-features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 30px;
}

.intro-feature-item {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    padding: 20px 15px;
    border-radius: 15px;
    text-align: center;
    border: 2px solid transparent;
    transition: var(--intro-transition);
    position: relative;
    overflow: hidden;
    display: block;
    text-decoration: none;
    color: inherit;
}

/* Feature Link Styling */
.intro-feature-link {
    text-decoration: none;
    color: inherit;
    display: block;
}

.intro-feature-link:hover {
    text-decoration: none;
    color: inherit;
}

.intro-feature-link:visited {
    color: inherit;
}

.intro-feature-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--intro-primary), var(--intro-primary-dark));
    opacity: 0;
    transition: var(--intro-transition);
}

.intro-feature-item:hover {
    border-color: var(--intro-primary);
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(182, 157, 116, 0.2);
}

.intro-feature-item:hover::before {
    opacity: 0.1;
}

.intro-feature-icon {
    font-size: 32px;
    color: var(--intro-primary);
    margin-bottom: 10px;
    position: relative;
    z-index: 2;
    font-family: 'IcoFont', sans-serif;
    font-style: normal;
    font-weight: normal;
    font-variant: normal;
    text-transform: none;
    line-height: 1;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.intro-feature-item:hover .intro-feature-icon {
    color: var(--intro-primary-dark);
    transform: scale(1.1);
}

.intro-feature-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--intro-text-dark);
    margin-bottom: 8px;
    position: relative;
    z-index: 2;
}

.intro-feature-desc {
    font-size: 12px;
    color: #666;
    line-height: 1.4;
    position: relative;
    z-index: 2;
}

/* Special Features */
.intro-special-features {
    background: linear-gradient(135deg, rgba(182, 157, 116, 0.1), rgba(182, 157, 116, 0.05));
    border-radius: 15px;
    padding: 20px;
    margin: 20px 0;
    border: 2px solid rgba(182, 157, 116, 0.2);
}

.intro-special-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--intro-primary);
    text-align: center;
    margin-bottom: 15px;
}

.intro-special-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.intro-special-list li {
    padding: 8px 0;
    color: var(--intro-text-dark);
    font-size: 14px;
    position: relative;
    padding-right: 25px;
}

.intro-special-list li::before {
    content: "⚡";
    position: absolute;
    right: 0;
    top: 8px;
    font-size: 16px;
    color: var(--intro-primary);
}

/* Action Buttons */
.intro-actions {
    display: flex;
    gap: 15px;
    margin-top: 25px;
    justify-content: center;
}

.intro-btn {
    flex: 1;
    padding: 15px 20px;
    border: none;
    border-radius: 15px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--intro-transition);
    text-align: center;
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    max-width: 300px;
}

.intro-btn-primary {
    background: linear-gradient(135deg, var(--intro-primary), var(--intro-primary-dark));
    color: var(--intro-text-light);
    box-shadow: 0 6px 20px rgba(182, 157, 116, 0.3);
}

.intro-btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(182, 157, 116, 0.4);
}

.intro-btn-secondary {
    background: #f8f9fa;
    color: var(--intro-text-dark);
    border: 2px solid #dee2e6;
}

.intro-btn-secondary:hover {
    background: #e9ecef;
    border-color: var(--intro-primary);
    color: var(--intro-primary);
}

/* Responsive Design */
@media (max-width: 768px) {
    .site-features-intro-overlay {
        padding: 10px;
    }
    
    .site-features-intro-modal {
        max-width: 100%;
    }
    
    .intro-modal-header {
        padding: 25px 20px 20px;
    }
    
    .intro-modal-title {
        font-size: 24px;
    }
    
    .intro-modal-subtitle {
        font-size: 14px;
    }
    
    .intro-modal-body {
        padding: 25px 20px;
    }
    
    .intro-features-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .intro-feature-item {
        padding: 15px 10px;
    }
    
    .intro-feature-icon {
        font-size: 28px;
    }
    
    .intro-feature-title {
        font-size: 14px;
    }
    
    .intro-feature-desc {
        font-size: 11px;
    }
}

@media (max-width: 480px) {
    .intro-actions {
        flex-direction: column;
    }
    
    .intro-btn {
        padding: 12px 15px;
        font-size: 14px;
    }
}

/* Animation Classes */
@keyframes slideUpIntro {
    from {
        transform: scale(0.8) translateY(50px);
        opacity: 0;
    }
    to {
        transform: scale(1) translateY(0);
        opacity: 1;
    }
}

@keyframes fadeInIntro {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.site-features-intro-overlay.show {
    animation: fadeInIntro 0.5s ease-out;
}

.site-features-intro-overlay.show .site-features-intro-modal {
    animation: slideUpIntro 0.6s ease-out;
}

/* Pulse animation for special items */
@keyframes pulseIntro {
    0% {
        box-shadow: 0 6px 20px rgba(182, 157, 116, 0.3);
    }
    50% {
        box-shadow: 0 8px 30px rgba(182, 157, 116, 0.5);
    }
    100% {
        box-shadow: 0 6px 20px rgba(182, 157, 116, 0.3);
    }
}

.intro-btn-primary {
    animation: pulseIntro 3s infinite;
}