/* ========================================
   NAVIGATION SECTION STYLES
   ======================================== */

/* ریست و تنظیمات پایه */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Vazirmatn', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: #f8fafc;
    color: #1e293b;
    line-height: 1.6;
}

/* ========================================
   MAIN NAVIGATION
   ======================================== */

#main-navigation {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    width: 90%;
    max-width: 1000px;
}

/* حالت اولیه: عرض کمتر */
#main-navigation:not(.scrolled) {
    max-width: 1000px;
}

/* حالت بعد از اسکرول: عرض بیشتر */
#main-navigation.scrolled {
    max-width: 1200px;
    top: 15px;
}

/* کانتینر اصلی Navigation */
.nav-container {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 16px 30px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: 0 8px 32px rgba(99, 102, 241, 0.1),
                0 2px 8px rgba(0, 0, 0, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.8);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

#main-navigation.scrolled .nav-container {
    padding: 14px 35px;
    box-shadow: 0 12px 48px rgba(99, 102, 241, 0.15),
                0 4px 12px rgba(0, 0, 0, 0.06);
}

/* ========================================
   LOGO
   ======================================== */

#main-navigation .nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    transition: transform 0.3s ease;
}

#main-navigation .nav-logo:hover {
    transform: scale(1.05);
}

#main-navigation .logo-icon {
    font-size: 28px;
    line-height: 1;
}

#main-navigation .logo-text {
    font-size: 22px;
    font-weight: 700;
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ========================================
   MENU
   ======================================== */

#main-navigation .nav-menu {
    display: flex;
    list-style: none;
    gap: 8px;
    margin: 0;
}

#main-navigation .nav-link {
    text-decoration: none;
    color: #64748b;
    font-size: 15px;
    font-weight: 500;
    padding: 10px 18px;
    border-radius: 12px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    display: block;
}

#main-navigation .nav-link::before {
    content: '';
    position: absolute;
    bottom: 8px;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 20px;
    height: 3px;
    background: linear-gradient(90deg, #6366f1, #8b5cf6);
    border-radius: 2px;
    transition: transform 0.3s ease;
}

#main-navigation .nav-link:hover {
    color: #6366f1;
    background: rgba(99, 102, 241, 0.08);
}

#main-navigation .nav-link:hover::before {
    transform: translateX(-50%) scaleX(1);
}

#main-navigation .nav-link.active {
    color: #6366f1;
    background: rgba(99, 102, 241, 0.12);
}

#main-navigation .nav-link.active::before {
    transform: translateX(-50%) scaleX(1);
}

/* ========================================
   ACTION BUTTONS
   ======================================== */

#main-navigation .nav-actions {
    display: flex;
    gap: 12px;
    align-items: center;
}

#main-navigation .btn-login {
    text-decoration: none;
    color: #64748b;
    font-size: 15px;
    font-weight: 500;
    padding: 10px 20px;
    border-radius: 12px;
    transition: all 0.3s ease;
    border: 1px solid #00000014
}

#main-navigation .btn-login:hover {
    color: #6366f1;
    background: rgba(99, 102, 241, 0.08);
    border-color: rgba(99, 102, 241, 0.2);
}

#main-navigation .btn-demo {
    text-decoration: none;
    color: #ffffff;
    font-size: 15px;
    font-weight: 600;
    padding: 12px 24px;
    border-radius: 12px;
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    box-shadow: 0 4px 16px rgba(99, 102, 241, 0.3);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

#main-navigation .btn-demo::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #8b5cf6 0%, #6366f1 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

#main-navigation .btn-demo:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.4);
}


#main-navigation .btn-demo:active {
    transform: translateY(0);
}

/* ========================================
   MOBILE MENU TOGGLE
   ======================================== */

#main-navigation .mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: 8px;
    transition: background 0.3s ease;
}

#main-navigation .mobile-menu-toggle:hover {
    background: rgba(99, 102, 241, 0.08);
}

#main-navigation .hamburger {
    width: 24px;
    height: 3px;
    background: #64748b;
    border-radius: 2px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

#main-navigation .mobile-menu-toggle.active .hamburger:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
    background: #6366f1;
}

#main-navigation .mobile-menu-toggle.active .hamburger:nth-child(2) {
    opacity: 0;
}

#main-navigation .mobile-menu-toggle.active .hamburger:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
    background: #6366f1;
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */

/* Tablet */
@media (max-width: 992px) {
    #main-navigation {
        width: 95%;
        top: 15px;
    }
    
    #main-navigation:not(.scrolled) {
        max-width: 650px;
    }
    
    #main-navigation.scrolled {
        max-width: 900px;
    }
    
    #main-navigation .nav-menu {
        gap: 4px;
    }
    
    #main-navigation .nav-link {
        font-size: 14px;
        padding: 8px 14px;
    }
    
    #main-navigation .btn-login,
    #main-navigation .btn-demo {
        font-size: 14px;
        padding: 10px 18px;
    }
}

/* Mobile */
@media (max-width: 768px) {
    #main-navigation {
        top: 10px;
        width: 95%;
    }
    
    #main-navigation:not(.scrolled),
    #main-navigation.scrolled {
        max-width: 100%;
    }
    
    #main-navigation .nav-container {
        padding: 12px 20px;
    }
    
    #main-navigation .mobile-menu-toggle {
        display: flex;
    }
    
    #main-navigation .nav-menu {
        position: absolute;
        top: calc(100% + 15px);
        right: 0;
        left: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        border-radius: 16px;
        flex-direction: column;
        gap: 0;
        padding: 12px;
        box-shadow: 0 12px 48px rgba(99, 102, 241, 0.15);
        opacity: 0;
        visibility: hidden;
        transform: translateY(-10px);
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    
    #main-navigation .nav-menu.active {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }
    
    #main-navigation .nav-link {
        padding: 14px 18px;
        border-radius: 10px;
    }
    
    #main-navigation .nav-actions {
        position: absolute;
        top: calc(100% + 15px);
        right: 0;
        left: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        border-radius: 16px;
        flex-direction: column;
        padding: 12px;
        margin-top: 8px;
        box-shadow: 0 12px 48px rgba(99, 102, 241, 0.15);
        opacity: 0;
        visibility: hidden;
        transform: translateY(-10px);
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    
    #main-navigation .nav-actions.active {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }
    
    #main-navigation .btn-login,
    #main-navigation .btn-demo {
        width: 100%;
        text-align: center;
        padding: 14px 20px;
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    #main-navigation .logo-text {
        font-size: 18px;
    }
    
    #main-navigation .logo-icon {
        font-size: 24px;
    }
    
    #main-navigation .nav-container {
        padding: 10px 16px;
    }
}