/* Lightweight Theme System for Job Posting Generator */
/* No frameworks - pure CSS variables for clean theme switching */

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: all 0.3s ease;
}

/* Theme 1: Black & White (Grayscale Minimal) */
.theme-black-white {
    --bg-color: #ffffff;
    --text-color: #1a1a1a;
    --primary-color: #000000;
    --card-bg: #f8f9fa;
    --border-color: #e0e0e0;
    --hover-color: #f0f0f0;
    --accent-color: #666666;
}

/* Theme 2: Blue (Calm and Modern) */
.theme-blue {
    --bg-color: #f8fafc;
    --text-color: #1e293b;
    --primary-color: #3b82f6;
    --card-bg: #ffffff;
    --border-color: #e2e8f0;
    --hover-color: #f1f5f9;
    --accent-color: #64748b;
}

/* Theme 3: Orange (Vibrant and Friendly) */
.theme-orange {
    --bg-color: #fffbf7;
    --text-color: #1c1917;
    --primary-color: #ea580c;
    --card-bg: #ffffff;
    --border-color: #fed7aa;
    --hover-color: #fff7ed;
    --accent-color: #a3a3a3;
}

/* Component Styles Using CSS Variables */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.header {
    background-color: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    margin-bottom: 2rem;
}

.header h1 {
    color: var(--primary-color);
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
}

.card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    transition: all 0.2s ease;
}

.card:hover {
    background-color: var(--hover-color);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.button {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    display: inline-block;
}

.button:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

.button-secondary {
    background-color: var(--card-bg);
    color: var(--primary-color);
    border: 1px solid var(--border-color);
}

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

.form-label {
    display: block;
    color: var(--text-color);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.form-input,
.form-textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background-color: var(--card-bg);
    color: var(--text-color);
    font-size: 1rem;
    transition: all 0.2s ease;
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.theme-selector {
    position: fixed;
    top: 20px;
    right: 20px;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

.theme-selector h3 {
    margin-bottom: 0.5rem;
    color: var(--text-color);
    font-size: 0.9rem;
}

.theme-buttons {
    display: flex;
    gap: 0.5rem;
}

.theme-btn {
    width: 30px;
    height: 30px;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.2s ease;
}

.theme-btn.black-white {
    background: linear-gradient(45deg, #000 50%, #fff 50%);
}

.theme-btn.blue {
    background: #3b82f6;
}

.theme-btn.orange {
    background: #ea580c;
}

.theme-btn:hover {
    transform: scale(1.1);
    border-color: var(--primary-color);
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background-color: var(--primary-color);
    color: white;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 600;
}

.text-accent {
    color: var(--accent-color);
}

.text-primary {
    color: var(--primary-color);
}

@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    .theme-selector {
        position: relative;
        top: auto;
        right: auto;
        margin-bottom: 2rem;
    }
    
    .grid {
        grid-template-columns: 1fr;
    }
}