* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a855f7 100%);
    min-height: 100vh;
    color: white;
    overflow-x: hidden;
}

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

/* Decorative elements inspired by the PPT design */
.container::before {
    content: '';
    position: absolute;
    top: -50px;
    right: -100px;
    width: 300px;
    height: 300px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    z-index: 0;
}

.container::after {
    content: '';
    position: absolute;
    bottom: -80px;
    left: -150px;
    width: 400px;
    height: 400px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 50%;
    z-index: 0;
}

header {
    text-align: center;
    margin-bottom: 40px;
    position: relative;
    z-index: 1;
}

.logo {
    margin-bottom: 20px;
}

.company-name {
    font-size: 3rem;
    font-weight: 800;
    letter-spacing: 0.1em;
    color: white;
    text-align: center;
    margin: 0;
    text-transform: uppercase;
    text-shadow: 
        0 2px 10px rgba(0, 0, 0, 0.3),
        0 0 20px rgba(255, 255, 255, 0.2);
    
    /* Subtle gradient effect */
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 50%, #ffffff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.main-title {
    font-size: 2.2rem;
    font-weight: 600;
    margin-bottom: 10px;
    letter-spacing: -0.02em;
}

.subtitle {
    font-size: 1.1rem;
    font-weight: 400;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

.navigation {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 40px;
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
}

.nav-btn {
    padding: 12px 24px;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.2);
    color: white;
    font-family: 'Inter', sans-serif;
    font-size: 0.95rem;
    font-weight: 500;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.nav-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.4);
    transform: translateY(-2px);
}

.nav-btn.active {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.5);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.content {
    position: relative;
    z-index: 1;
}

.wifi-section {
    display: none;
    animation: fadeIn 0.5s ease;
}

.wifi-section.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.wifi-card {
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    padding: 40px;
    backdrop-filter: blur(20px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    max-width: 600px;
    margin: 0 auto;
}

.wifi-card h3 {
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 30px;
    text-align: center;
    letter-spacing: -0.02em;
}

.wifi-info {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.info-item {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.info-item label {
    font-size: 0.95rem;
    font-weight: 500;
    opacity: 0.9;
}

.copy-field {
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(255, 255, 255, 0.1);
    padding: 15px;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.copy-field span {
    flex: 1;
    font-size: 1.1rem;
    font-weight: 500;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    letter-spacing: 0.02em;
}

.copy-btn {
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
    font-family: 'Inter', sans-serif;
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.copy-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-1px);
}

.copy-btn:active {
    transform: translateY(0);
}

footer {
    text-align: center;
    margin-top: 60px;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    opacity: 0.8;
    position: relative;
    z-index: 1;
}

footer p {
    font-size: 0.9rem;
    font-weight: 400;
}

.toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    opacity: 0;
    transition: all 0.3s ease;
    z-index: 1000;
    backdrop-filter: blur(10px);
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(-10px);
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    .company-name {
        font-size: 2.2rem;
    }
    
    .main-title {
        font-size: 1.8rem;
    }
    
    .navigation {
        gap: 8px;
    }
    
    .nav-btn {
        padding: 10px 18px;
        font-size: 0.9rem;
    }
    
    .wifi-card {
        padding: 30px 20px;
    }
    
    .copy-field {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
    }
    
    .copy-btn {
        align-self: center;
        width: fit-content;
    }
}

@media (max-width: 480px) {
    .company-name {
        font-size: 1.8rem;
        letter-spacing: 0.05em;
    }
    
    .navigation {
        flex-direction: column;
        align-items: center;
    }
    
    .nav-btn {
        width: 200px;
        text-align: center;
    }
    
    .main-title {
        font-size: 1.6rem;
    }
    
    .subtitle {
        font-size: 1rem;
    }
}