/* Main Styles for PHP Tools Collection */

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #333;
}

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

.header {
    text-align: center;
    margin-bottom: 40px;
    color: white;
}

.header h1 {
    font-size: 3rem;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.header p {
    font-size: 1.2rem;
    opacity: 0.9;
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    margin-bottom: 40px;
}

.tool-card {
    background: white;
    border-radius: 15px;
    padding: 25px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-decoration: none;
    color: inherit;
}

.tool-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
    text-decoration: none;
    color: inherit;
}

.tool-icon {
    font-size: 3rem;
    margin-bottom: 15px;
    text-align: center;
}

.tool-card h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: #333;
}

.tool-card p {
    color: #666;
    line-height: 1.6;
}

.tool-page {
    background: white;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    margin-bottom: 30px;
}

.tool-page h2 {
    color: #333;
    margin-bottom: 20px;
    text-align: center;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
    color: #333;
}

.form-control {
    width: 100%;
    padding: 12px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-check {
    display: flex;
    align-items: center;
    margin-bottom: 10px;
}

.form-check input {
    margin-right: 10px;
}

.btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 8px;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
    color: white;
    text-decoration: none;
}

.btn-secondary {
    background: #6c757d;
}

.btn-danger {
    background: #dc3545;
}

.btn-success {
    background: #28a745;
}

.result-box {
    background: #f8f9fa;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    padding: 20px;
    margin-top: 20px;
}

.password-strength {
    margin-top: 10px;
    padding: 10px;
    border-radius: 5px;
    text-align: center;
    font-weight: bold;
}

.alert {
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 20px;
}

.alert-success {
    background: #d4edda;
    border: 1px solid #c3e6cb;
    color: #155724;
}

.alert-error {
    background: #f8d7da;
    border: 1px solid #f5c6cb;
    color: #721c24;
}

.alert-info {
    background: #cce7ff;
    border: 1px solid #b3d9ff;
    color: #004085;
}

.file-drop-zone {
    border: 3px dashed #ccc;
    border-radius: 10px;
    padding: 40px 20px;
    text-align: center;
    margin-bottom: 20px;
    transition: all 0.3s ease;
    cursor: pointer;
}

.file-drop-zone:hover,
.file-drop-zone.dragover {
    border-color: #667eea;
    background: #f0f4ff;
}

.file-info {
    background: #e9ecef;
    padding: 15px;
    border-radius: 8px;
    margin: 10px 0;
}

.progress-bar {
    width: 100%;
    height: 20px;
    background: #e9ecef;
    border-radius: 10px;
    overflow: hidden;
    margin: 10px 0;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #667eea, #764ba2);
    transition: width 0.3s ease;
}

.qr-code-result {
    text-align: center;
    margin-top: 20px;
}

.qr-code-result img {
    max-width: 300px;
    border: 1px solid #ddd;
    border-radius: 8px;
}

.color-picker-canvas {
    border: 2px solid #ddd;
    border-radius: 8px;
    cursor: crosshair;
    max-width: 100%;
}

.color-display {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
    margin-top: 20px;
}

.color-box {
    text-align: center;
    padding: 15px;
    border-radius: 8px;
    border: 1px solid #ddd;
}

.color-sample {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    margin: 0 auto 10px;
    border: 2px solid #ddd;
}

.back-button {
    margin-bottom: 20px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: bold;
    color: #667eea;
    margin-bottom: 10px;
}

.stat-label {
    color: #666;
    font-size: 1.1rem;
}

.table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

.table th,
.table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

.table th {
    background: #f8f9fa;
    font-weight: 600;
}

.table tr:hover {
    background: #f8f9fa;
}

@media (max-width: 768px) {
    .header h1 {
        font-size: 2rem;
    }
    
    .tools-grid {
        grid-template-columns: 1fr;
    }
    
    .container {
        padding: 10px;
    }
    
    .tool-card {
        padding: 20px;
    }
    
    .tool-page {
        padding: 20px;
    }
}