/* Base Styles */
:root {
    --primary-color: #4a6fa5;
    --secondary-color: #166088;
    --accent-color: #4fc3f7;
    --text-color: #333;
    --light-text: #666;
    --bg-color: #f9f9f9;
    --card-bg: #ffffff;
    --border-color: #e0e0e0;
    --success-color: #4caf50;
    --error-color: #f44336;
    --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

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

/* Header */
header {
    text-align: center;
    margin-bottom: 30px;
    padding: 20px 0;
    border-bottom: 1px solid var(--border-color);
}

header h1 {
    color: var(--primary-color);
    margin-bottom: 10px;
}

header p {
    color: var(--light-text);
}

/* Main Content */
main {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
}

@media (min-width: 768px) {
    main {
        grid-template-columns: 1fr 1fr;
    }
}

/* Form Styles */
.content-form {
    background-color: var(--card-bg);
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    padding: 25px;
}

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

label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
}

input, 
select, 
textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-family: var(--font-family);
    font-size: 14px;
}

input:focus, 
select:focus, 
textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px rgba(79, 195, 247, 0.2);
}

button {
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 4px;
    padding: 12px 20px;
    cursor: pointer;
    font-weight: 600;
    transition: background-color 0.2s;
}

button:hover {
    background-color: var(--secondary-color);
}

button:disabled {
    background-color: var(--light-text);
    cursor: not-allowed;
}

/* Output Styles */
.content-output {
    background-color: var(--card-bg);
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    padding: 25px;
    position: relative;
}

.output-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
}

.output-container {
    min-height: 200px;
    padding: 15px;
    background-color: rgba(0, 0, 0, 0.02);
    border-radius: 4px;
    white-space: pre-wrap;
}

.copy-btn {
    background-color: transparent;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
    padding: 6px 12px;
    font-size: 14px;
}

.copy-btn:hover:not(:disabled) {
    background-color: rgba(74, 111, 165, 0.1);
}

/* Loader */
.loader {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
    font-style: italic;
    color: var(--light-text);
}

.loader::after {
    content: "...";
    animation: loading 1.5s infinite;
    width: 20px;
    display: inline-block;
    text-align: left;
}

@keyframes loading {
    0% { content: "."; }
    33% { content: ".."; }
    66% { content: "..."; }
}

/* Footer */
footer {
    text-align: center;
    margin-top: 40px;
    padding: 20px 0;
    border-top: 1px solid var(--border-color);
    color: var(--light-text);
    font-size: 14px;
}

/* Utility Classes */
.success-message {
    color: var(--success-color);
    padding: 10px;
    border-radius: 4px;
    margin: 10px 0;
    background-color: rgba(76, 175, 80, 0.1);
}

.error-message {
    color: var(--error-color);
    padding: 10px;
    border-radius: 4px;
    margin: 10px 0;
    background-color: rgba(244, 67, 54, 0.1);
}