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

body {
    font-family: 'Segoe UI', Tahoma, sans-serif;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    min-height: 100vh;
    color: #e6e6e6;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.page {
    display: none;
}

.page.active {
    display: block;
}

/* Navbar */
.navbar {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 15px 30px;
    margin-bottom: 40px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.8em;
    font-weight: 700;
    color: #4cc9f0;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
}

.logo:hover {
    color: #72efdd;
    transform: scale(1.05);
    transition: all 0.3s ease;
}

.nav-links {
    display: flex;
    gap: 20px;
}

.nav-links a {
    color: #b8b8b8;
    text-decoration: none;
    padding: 8px 16px;
    border-radius: 8px;
    transition: all 0.3s ease;
    cursor: pointer;
}

.nav-links a:hover {
    background: rgba(76, 201, 240, 0.1);
    color: #4cc9f0;
}

/* Main content */
h1 {
    font-size: 3.5em;
    margin-bottom: 20px;
    background: linear-gradient(45deg, #4cc9f0, #72efdd);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.subtitle {
    font-size: 1.3em;
    color: #94a3b8;
    margin-bottom: 50px;
    max-width: 600px;
}

/* Button grid */
.button-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    width: 100%;
    max-width: 1000px;
    margin: 0 auto;
}

.action-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid transparent;
    border-radius: 20px;
    padding: 40px 30px;
    text-decoration: none;
    color: #e6e6e6;
    transition: all 0.4s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    cursor: pointer;
}

.action-btn:hover {
    transform: translateY(-10px);
    border-color: #4cc9f0;
    background: rgba(76, 201, 240, 0.1);
    box-shadow: 0 20px 40px rgba(76, 201, 240, 0.2);
}

.btn-icon {
    font-size: 3em;
    margin-bottom: 10px;
}

.btn-title {
    font-size: 1.8em;
    font-weight: 700;
    color: #72efdd;
}

.btn-description {
    color: #94a3b8;
    font-size: 1em;
}

/* Quote */
.quote {
    margin-top: 50px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.03);
    border-left: 4px solid #4cc9f0;
    border-radius: 10px;
    font-style: italic;
    color: #cbd5e1;
}

.quote-author {
    text-align: right;
    margin-top: 10px;
    color: #4cc9f0;
    font-weight: 700;
}

/* Footer */
.footer {
    margin-top: 60px;
    text-align: center;
    color: #64748b;
    font-size: 0.9em;
    padding: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* Content sections */
.content-section {
    background: rgba(255, 255, 255, 0.03);
    border-radius: 20px;
    padding: 40px;
    margin-bottom: 30px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.content-section h2 {
    color: #72efdd;
    margin-bottom: 25px;
    font-size: 1.8em;
}

.content-section h3 {
    color: #4cc9f0;
    margin: 20px 0 15px 0;
    font-size: 1.4em;
}

/* Tool grid */
.tool-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
    margin-top: 30px;
}

.tool-card {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    padding: 25px;
    border: 1px solid transparent;
    transition: all 0.3s ease;
}

.tool-card:hover {
    border-color: #4cc9f0;
    background: rgba(76, 201, 240, 0.05);
    transform: translateY(-5px);
}

.tool-icon {
    font-size: 2.5em;
    margin-bottom: 15px;
    color: #4cc9f0;
}

.tool-card h3 {
    color: #72efdd;
    font-size: 1.3em;
    margin-bottom: 10px;
}

.tool-card p {
    color: #94a3b8;
}

/* Back button */
.back-btn {
    display: inline-block;
    margin-top: 30px;
    padding: 12px 30px;
    background: rgba(76, 201, 240, 0.1);
    color: #4cc9f0;
    text-decoration: none;
    border-radius: 10px;
    border: 1px solid #4cc9f0;
    cursor: pointer;
    transition: all 0.3s ease;
}

.back-btn:hover {
    background: rgba(76, 201, 240, 0.2);
    transform: scale(1.05);
}

/* Bio card */
.bio-card {
    display: flex;
    gap: 20px;
    align-items: flex-start;
    margin-top: 20px;
}

.bio-icon {
    font-size: 3em;
    color: #4cc9f0;
    flex-shrink: 0;
}

.bio-content {
    flex: 1;
}

.experience-list {
    list-style: none;
    padding-left: 0;
    margin-top: 15px;
}

.experience-list li {
    padding: 8px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    color: #cbd5e1;
}

.experience-list li strong {
    color: #4cc9f0;
}

.experience-list ul {
    margin-top: 5px;
    margin-left: 20px;
}

.experience-list ul li {
    border-bottom: none;
    padding: 4px 0;
    color: #94a3b8;
}

/* Contact grid */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 20px;
}

.contact-card {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    padding: 30px;
    text-align: center;
    transition: all 0.3s ease;
}

.contact-card:hover {
    transform: translateY(-5px);
    background: rgba(76, 201, 240, 0.1);
}

.contact-icon {
    font-size: 3em;
    color: #4cc9f0;
    margin-bottom: 15px;
}

.contact-card h3 {
    color: #72efdd;
    margin-bottom: 10px;
}

.contact-card p {
    color: #94a3b8;
}

/* Gallery placeholder */
.gallery-placeholder {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.placeholder-box {
    background: rgba(255, 255, 255, 0.05);
    border: 2px dashed rgba(76, 201, 240, 0.3);
    border-radius: 15px;
    padding: 40px 20px;
    text-align: center;
    color: #94a3b8;
}

.placeholder-box i {
    font-size: 3em;
    color: rgba(76, 201, 240, 0.5);
    margin-bottom: 10px;
}

.placeholder-note {
    color: #94a3b8;
    font-style: italic;
    margin-bottom: 20px;
}

.placeholder-note i {
    color: #4cc9f0;
    margin-right: 8px;
}

/* Responsive */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 15px;
    }
    
    h1 {
        font-size: 2.5em;
    }
    
    .button-grid {
        grid-template-columns: 1fr;
    }
    
    .bio-card {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
}