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

:root {
    --primary: #0f0f1f;
    --secondary: #1a1a2f;
    --accent: #8c52ff;
    --text: #ffffff;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --gradient: linear-gradient(45deg, #8c52ff, #5233b5);
}

[data-theme="light"] {
    --primary: #ffffff;
    --secondary: #f5f5ff;
    --accent: #6b3acc;
    --text: #1a1a2f;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    --gradient: linear-gradient(45deg, #6b3acc, #4925a3);
}

[data-theme="neon"] {
    --primary: #0a0a15;
    --secondary: #12121f;
    --accent: #ff00ff;
    --text: #00ff99;
    --shadow: 0 4px 6px rgba(255, 0, 255, 0.2);
    --gradient: linear-gradient(45deg, #ff00ff, #00ff99);
}

[data-theme="cosmic"] {
    --primary: #13111C;
    --secondary: #1a1725;
    --accent: #FF71CE;
    --text: #B967FF;
    --shadow: 0 4px 6px rgba(255, 113, 206, 0.2);
    --gradient: linear-gradient(45deg, #FF71CE, #B967FF);
}

body {
    margin: 0;
    font-family: 'Segoe UI', sans-serif;
    background: var(--primary);
    color: var(--text);
    transition: all 0.3s ease;
    min-height: 100vh;
}

.theme-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--secondary);
    padding: 1rem;
    display: flex;
    justify-content: center;
    gap: 1rem;
    z-index: 1000;
    box-shadow: var(--shadow);
}

.theme-btn {
    padding: 0.5rem 1.5rem;
    border: none;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    background: var(--gradient);
    color: white;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.8rem;
}

.theme-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 6rem 2rem 2rem 2rem;
}

.header {
    text-align: center;
    margin-bottom: 3rem;
}

.title {
    font-size: 3.5rem;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1rem;
}

.input-section {
    background: var(--secondary);
    padding: 2rem;
    border-radius: 20px;
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
}

.input-field {
    width: 100%;
    padding: 1rem 1.5rem;
    font-size: 1.2rem;
    border: 2px solid transparent;
    border-radius: 15px;
    background: var(--primary);
    color: var(--text);
    margin-bottom: 1rem;
    transition: all 0.3s ease;
}

.input-field:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(140, 82, 255, 0.2);
}

.preview {
    font-size: 1.5rem;
    margin: 1rem 0;
    padding: 1.5rem;
    background: var(--primary);
    border-radius: 15px;
    min-height: 60px;
    text-align: center;
}

.fonts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.font-card {
    background: var(--secondary);
    padding: 1.5rem;
    border-radius: 15px;
    transition: all 0.3s ease;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.font-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.2);
}

.font-name {
    font-size: 1.2rem;
    color: var(--accent);
    margin-bottom: 0.5rem;
}

.font-preview {
    font-size: 1.3rem;
    margin: 1rem 0;
    word-break: break-all;
}

.copy-btn {
    background: var(--gradient);
    color: white;
    border: none;
    padding: 0.8rem 1.5rem;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.copy-btn:hover {
    opacity: 0.9;
    transform: translateY(-2px);
}

.footer {
    text-align: center;
    padding: 2rem;
    margin-top: 3rem;
    font-size: 1.2rem;
    background: var(--secondary);
    border-radius: 15px;
    box-shadow: var(--shadow);
}

.notification {
    position: fixed;
    bottom: 20px;
    right: 20px;
    padding: 1rem 2rem;
    background: var(--accent);
    color: white;
    border-radius: 10px;
    transform: translateY(100px);
    opacity: 0;
    transition: all 0.3s ease;
}

.notification.show {
    transform: translateY(0);
    opacity: 1;
}

@media (max-width: 768px) {
    .container {
        padding: 5rem 1rem 1rem 1rem;
    }
    
    .title {
        font-size: 2.5rem;
    }

    .theme-bar {
        padding: 0.5rem;
    }

    .theme-btn {
        padding: 0.4rem 1rem;
        font-size: 0.7rem;
    }
}