/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f4f4f4;
}

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

/* Header styles */
header {
    background-color: #2c3e50;
    color: white;
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

header h1 {
    font-size: 1.8rem;
}

nav ul {
    display: flex;
    list-style: none;
}

nav ul li {
    margin-left: 1.5rem;
}

nav ul li a {
    color: white;
    text-decoration: none;
    transition: color 0.3s;
}

nav ul li a:hover {
    color: #3498db;
}

/* Main content */
main {
    min-height: calc(100vh - 150px);
}

/* Hero section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.hero h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Tools section */
.tools-section {
    padding: 3rem 0;
    background-color: white;
}

.tools-section h2 {
    text-align: center;
    margin-bottom: 2rem;
    font-size: 2rem;
    color: #2c3e50;
}

.tool-card {
    background: white;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    padding: 2rem;
    margin-bottom: 2rem;
    border: 1px solid #eee;
}

.tool-card h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.tool-card p {
    margin-bottom: 1.5rem;
    color: #555;
}

.tool-intro {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.tool-link-btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background-color: #3498db;
    color: white;
    text-decoration: none;
    border-radius: 4px;
    font-weight: bold;
    text-align: center;
    transition: background-color 0.3s;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    max-width: fit-content;
}

.tool-link-btn:hover {
    background-color: #2980b9;
}

/* String generator styles */
.string-generator {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.controls-row {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    align-items: end;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    min-width: 120px;
}

.input-group label {
    font-weight: bold;
    color: #2c3e50;
    font-size: 0.9rem;
}

.input-group input[type="number"],
.input-group select {
    padding: 0.5rem;
    border: 1px solid #ddd;
    border-radius: 4px;
}

.input-group input[type="number"] {
    width: 100px;
}

.input-group select {
    min-width: 120px;
}

.output-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
    align-items: center;
}

.output-row input {
    flex: 1;
    min-width: 200px;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
}

.button-group {
    display: flex;
    gap: 0.5rem;
    flex-wrap: nowrap;
}

#generate-btn, #copy-btn {
    padding: 0.75rem 1rem;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.3s;
}

#generate-btn {
    background-color: #3498db;
    color: white;
}

#generate-btn:hover {
    background-color: #2980b9;
}

#copy-btn {
    background-color: #27ae60;
    color: white;
}

#copy-btn:hover {
    background-color: #219a52;
}

/* Ads container */
.ads-container {
    padding: 2rem 0;
    text-align: center;
}

.ad-slot {
    margin: 0 auto;
    max-width: 728px;
}

/* Footer */
footer {
    background-color: #2c3e50;
    color: white;
    text-align: center;
    padding: 2rem 0;
    margin-top: auto;
}

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

.footer-links a {
    color: #3498db;
    margin: 0 1rem;
    text-decoration: none;
}

.footer-links a:hover {
    text-decoration: underline;
}

/* Responsive design */
@media (max-width: 768px) {
    header .container {
        flex-direction: column;
        gap: 1rem;
    }
    
    nav ul {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    nav ul li {
        margin: 0.5rem;
    }
    
    .hero h2 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .tools-section h2 {
        font-size: 1.5rem;
    }
    
    .tool-card {
        padding: 1.5rem;
    }
    
    .password-output {
        flex-direction: column;
    }
    
    .password-output input {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 10px;
    }
    
    .hero {
        padding: 2rem 0;
    }
    
    .hero h2 {
        font-size: 1.5rem;
    }
    
    .tool-card {
        padding: 1rem;
    }
    
    .radio-group {
        flex-wrap: wrap;
    }
}