:root {
    --bg-primary: #0a192f;
    --bg-secondary: #112240;
    --text-primary: #e6f1ff;
    --text-secondary: #8892b0;
    --accent: #64ffda;
    --card-bg: #112240;
    --nav-bg: rgba(10, 25, 47, 0.95);
}

[data-theme="light"] {
    --bg-primary: #f0f7ff;
    --bg-secondary: #ffffff;
    --text-primary: #0a192f;
    --text-secondary: #495670;
    --accent: #007acc;
    --card-bg: #ffffff;
    --nav-bg: rgba(240, 247, 255, 0.95);
}

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

body {
    font-family: 'Inter', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: all 0.3s ease;
}

.navbar {
    background: var(--nav-bg);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--accent);
    text-decoration: none;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    color: var(--text-primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: var(--accent);
}

.theme-btn {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.theme-btn:hover {
    background: var(--bg-secondary);
    transform: rotate(30deg);
}

.main-content {
    min-height: calc(100vh - 200px);
    padding: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.flash-messages {
    margin-bottom: 2rem;
}

.flash-message {
    padding: 1rem;
    background: var(--accent);
    color: var(--bg-primary);
    border-radius: 8px;
    margin-bottom: 0.5rem;
}

.hero {
    text-align: center;
    padding: 4rem 0;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    background: linear-gradient(45deg, var(--accent), #4fc3f7);
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.work-card {
    background: var(--card-bg);
    border-radius: 15px;
    padding: 1.5rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid rgba(100, 255, 218, 0.1);
}

.work-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(100, 255, 218, 0.2);
}

.work-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 10px;
    margin-bottom: 1rem;
}

.work-title {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: var(--accent);
}

.work-category {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.work-description {
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.form-container {
    max-width: 500px;
    margin: 2rem auto;
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 15px;
    border: 1px solid rgba(100, 255, 218, 0.1);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.form-input {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid rgba(100, 255, 218, 0.3);
    border-radius: 8px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 1rem;
}

.form-input:focus {
    outline: none;
    border-color: var(--accent);
}

.btn {
    background: var(--accent);
    color: var(--bg-primary);
    padding: 0.8rem 2rem;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: bold;
    transition: all 0.3s ease;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(100, 255, 218, 0.3);
}

.btn-danger {
    background: #ff4757;
}

.btn-danger:hover {
    box-shadow: 0 5px 15px rgba(255, 71, 87, 0.3);
}

.footer {
    text-align: center;
    padding: 2rem;
    background: var(--bg-secondary);
    color: var(--text-secondary);
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 2rem;
}

.admin-table th,
.admin-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid rgba(100, 255, 218, 0.1);
}

@media (max-width: 768px) {
    .nav-container {
        padding: 0 1rem;
    }
    
    .nav-menu {
        gap: 1rem;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .main-content {
        padding: 1rem;
    }
    
    .portfolio-grid {
        grid-template-columns: 1fr;
    }
    
    .form-container {
        margin: 1rem;
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .nav-menu {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .hero {
        padding: 2rem 0;
    }
    
    .hero h1 {
        font-size: 1.5rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
}