/* Custom Styles for MomoVPN */

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

/* Navigation */
.navbar {
    background: linear-gradient(135deg, rgba(30, 60, 114, 0.95), rgba(42, 82, 152, 0.95));
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    padding: 1rem 0;
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
    color: #fff !important;
}

.nav-link {
    color: rgba(255, 255, 255, 0.9) !important;
    font-weight: 500;
    margin: 0 10px;
    transition: all 0.3s ease;
}

.nav-link:hover {
    color: #fff !important;
    transform: translateY(-2px);
}

/* Language Dropdown */
.dropdown .btn {
    border-radius: 20px;
    font-size: 0.85rem;
    padding: 8px 16px;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.dropdown .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
}

.language-dropdown {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border: none;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    min-width: 200px;
    margin-top: 8px;
    padding: 8px;
    overflow: hidden;
}

.language-dropdown .dropdown-item {
    padding: 10px 16px;
    font-size: 0.9rem;
    font-weight: 500;
    color: #333;
    transition: all 0.3s ease;
    border-radius: 8px;
    margin: 2px 0;
    border: none;
    background: transparent;
}

.language-dropdown .dropdown-item:hover {
    background: linear-gradient(135deg, #667eea, #764ba2) !important;
    color: white !important;
    transform: translateX(3px);
    margin-left: 3px;
    margin-right: -3px;
}

.language-dropdown .dropdown-item.active {
    background: linear-gradient(135deg, #667eea, #764ba2) !important;
    color: white !important;
    font-weight: 600;
}

.language-dropdown .dropdown-item:focus {
    background: linear-gradient(135deg, #667eea, #764ba2) !important;
    color: white !important;
    outline: none;
    box-shadow: none;
}

.language-dropdown .dropdown-item.disabled {
    color: #6c757d !important;
    background: transparent !important;
    transform: none !important;
    font-style: italic;
    margin-left: 0 !important;
    margin-right: 0 !important;
}

.language-dropdown .dropdown-divider {
    margin: 8px 0;
    border-color: rgba(0, 0, 0, 0.1);
}

/* Hero Section */
.hero-section {
    min-height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    z-index: -2;
}

.hero-background::before {
    content: '';
    position: absolute;
    width: 200%;
    height: 200%;
    background: url('data:image/svg+xml,<svg width="60" height="60" viewBox="0 0 60 60" xmlns="http://www.w3.org/2000/svg"><g fill="none" fill-rule="evenodd"><g fill="%23ffffff" fill-opacity="0.1"><circle cx="30" cy="30" r="1"/></g></svg>') repeat;
    animation: moveBackground 20s linear infinite;
    z-index: -1;
}

@keyframes moveBackground {
    0% { transform: translate(0, 0); }
    100% { transform: translate(-60px, -60px); }
}

.hero-content {
    color: white;
    z-index: 2;
    @media (max-width: 768px) {
        padding-top: 100px;
    }
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    animation: fadeInUp 1s ease;
}

.hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    animation: fadeInUp 1s ease 0.2s both;
}

.hero-buttons {
    animation: fadeInUp 1s ease 0.4s both;
}

.hero-buttons .btn {
    border-radius: 50px;
    padding: 15px 30px;
    font-weight: 600;
    transition: all 0.3s ease;
    margin-bottom: 10px;
}

.hero-buttons .btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.hero-stats {
    animation: fadeInUp 1s ease 0.6s both;
    @media (max-width: 768px) {
        margin: 40px 0 !important;
    }
}

.stat-item {
    text-align: center;
    color: white;
}

.stat-item h3 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: #fff;
}

.stat-item p {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* Hero Image */
.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeInRight 1s ease 0.8s both;
}

.phone-mockup {
    width: 300px;
    height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: float 3s ease-in-out infinite;
}

.phone-screen {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.phone-screen svg {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.phone-screen i {
    font-size: 4rem;
    color: white;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translate3d(0, 40px, 0);
    }
    to {
        opacity: 1;
        transform: translate3d(0, 0, 0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translate3d(40px, 0, 0);
    }
    to {
        opacity: 1;
        transform: translate3d(0, 0, 0);
    }
}

/* Features Section */
.features-section {
    background: #f8f9fa;
    padding: 100px 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #1e3c72;
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 3rem;
}

.feature-card {
    background: white;
    padding: 2.5rem 2rem;
    border-radius: 20px;
    text-align: center;
    height: 100%;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    transition: all 0.3s ease;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1);
}

.feature-icon i {
    font-size: 2rem;
    color: white;
}

.feature-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #1e3c72;
    margin-bottom: 1rem;
}

.feature-card p {
    color: #666;
    line-height: 1.6;
}

/* Download Section */
.download-section {
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    color: white;
    padding: 100px 0;
}

.download-section .section-title,
.download-section .section-subtitle {
    color: white;
}

.download-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.download-card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.15);
}

.download-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    color: white;
}

.download-info h4 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.download-info p {
    margin-bottom: 1.5rem;
    opacity: 0.9;
}

.download-info .btn {
    border-radius: 50px;
    padding: 12px 25px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.download-info .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

/* Contact Section */
.contact-section {
    background: #f8f9fa;
    padding: 100px 0;
}

.contact-item {
    padding: 2rem;
    transition: all 0.3s ease;
}

.contact-item:hover {
    transform: translateY(-5px);
}

.contact-item i {
    font-size: 2.5rem;
    color: #1e3c72;
    margin-bottom: 1rem;
}

.contact-item h5 {
    font-weight: 600;
    color: #1e3c72;
    margin-bottom: 0.5rem;
}

.contact-item p {
    color: #666;
    font-weight: 500;
}

.contact-item a {
    color: inherit;
    text-decoration: none;
}

.contact-item a:hover {
    text-decoration: none;
}

/* Footer */
.footer {
    background: #1e3c72;
    color: white;
}

.footer-brand {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.footer-text {
    opacity: 0.9;
    margin-bottom: 1rem;
}

.footer-links {
    margin-bottom: 1rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    margin: 0 15px;
    transition: all 0.3s ease;
}

.footer-links a:hover {
    color: white;
}

.footer-copyright {
    opacity: 0.7;
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .phone-mockup {
        width: 250px;
        height: 500px;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .feature-card {
        margin-bottom: 2rem;
    }
    
    .footer-links a {
        display: block;
        margin: 5px 0;
    }
    
    .navbar-collapse .navbar-nav {
        text-align: center;
    }
    
    .navbar-collapse .nav-item {
        margin: 0;
    }
    
    .navbar-collapse .nav-link {
        padding: 10px 20px;
        margin: 5px 0;
        display: inline-block;
    }
}

@media (max-width: 576px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-buttons .btn {
        display: block;
        width: 100%;
        margin-bottom: 1rem;
    }
    
    .phone-mockup {
        width: 200px;
        height: 400px;
    }
    
    .navbar-collapse .nav-link {
        font-size: 1rem;
        padding: 12px 15px;
        border-radius: 8px;
        margin: 3px 0;
        transition: all 0.3s ease;
    }
    
    .navbar-collapse .nav-link:hover {
        background: rgba(255, 255, 255, 0.1);
        transform: none;
    }
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #5a67d8 0%, #667eea 100%);
}