/* BulkCreator Tools - Unified Design System */
:root {
    /* Primary Palette */
    --primary-bg: #9ab6c1;
    --secondary-bg: #dfeef4;
    --dark-accent: #4a5c6a;
    --darker-accent: #3a4c5a;
    --light-text: #dfeef4;
    --mid-gray: #6b8491;
    --border-color: #c8d8df;
    
    /* Feedback Colors */
    --success: #d4edda;
    --success-border: #c3e6cb;
    --error: #f8d7da;
    --error-border: #f5c6cb;
    
    /* Button Colors */
    --button-primary: #3b82f6;
    --button-hover: #2563eb;
    
    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 12px;
    --spacing-md: 20px;
    --spacing-lg: 30px;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 10px;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 15px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 25px rgba(0,0,0,0.12);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--primary-bg);
    min-height: 100vh;
    line-height: 1.6;
    color: var(--dark-accent);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-md);
}

/* Tool Header - Matches your screenshot */
.tool-header {
    background: var(--secondary-bg);
    padding: var(--spacing-lg);
    margin: var(--spacing-md) 0;
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-md);
}

.tool-header h1 {
    color: var(--dark-accent);
    font-size: 2.5em;
    margin-bottom: 10px;
    font-weight: 700;
}

.tool-header p {
    color: var(--mid-gray);
    font-size: 1.2em;
    font-weight: 400;
}

/* Tab Container */
.tab-container {
    background: var(--secondary-bg);
    border-radius: var(--radius-lg);
    margin: var(--spacing-md) 0;
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.tab-buttons {
    display: flex;
    background: var(--dark-accent);
}

.tab-button {
    flex: 1;
    padding: 15px 20px;
    background: none;
    border: none;
    color: var(--light-text);
    cursor: pointer;
    font-size: 16px;
    font-weight: 500;
    transition: all 0.3s ease;
    border-right: 1px solid var(--darker-accent);
}

.tab-button:last-child {
    border-right: none;
}

.tab-button:hover {
    background: var(--darker-accent);
}

.tab-button.active {
    background: var(--secondary-bg);
    color: var(--dark-accent);
    font-weight: 600;
}

.tab-content {
    padding: var(--spacing-lg);
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
}

/* Usage Counter */
.usage-counter {
    background: #c8d8df;
    padding: 15px;
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    text-align: center;
    font-weight: 500;
    color: var(--dark-accent);
}

/* Forms */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: var(--dark-accent);
    font-weight: 600;
    font-size: 14px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-sm);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 16px;
    transition: all 0.3s ease;
    background: white;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--dark-accent);
    box-shadow: 0 0 0 3px rgba(74, 92, 106, 0.1);
}

.form-group input::placeholder {
    color: #a0aec0;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

/* Buttons */
.btn {
    background: var(--dark-accent);
    color: white;
    padding: 12px 24px;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.btn:hover {
    background: var(--darker-accent);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-primary {
    background: var(--button-primary);
    font-size: 18px;
    padding: 15px 30px;
    width: 100%;
}

.btn-primary:hover {
    background: var(--button-hover);
}

.btn:disabled {
    background: #cbd5e0;
    cursor: not-allowed;
    transform: none;
}

/* Results */
.results {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    display: none;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.results.success {
    background: var(--success);
    border: 1px solid var(--success-border);
}

.results.error {
    background: var(--error);
    border: 1px solid var(--error-border);
}

.results h3 {
    margin-bottom: 10px;
    font-size: 1.2em;
}

/* Steps (Help sections) */
.step {
    background: white;
    margin-bottom: 15px;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--dark-accent);
    box-shadow: var(--shadow-sm);
}

.step-number {
    background: var(--dark-accent);
    color: white;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
    font-weight: bold;
    font-size: 14px;
}

/* Spinner */
.spinner {
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top: 3px solid white;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    animation: spin 1s linear infinite;
    display: inline-block;
    vertical-align: middle;
    margin-left: 8px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Hide ads for paid users */
body[data-tier="basic"] .ad-container,
body[data-tier="gold"] .ad-container,
body[data-tier="ultimate"] .ad-container {
    display: none !important;
}

/* Responsive */
@media (max-width: 768px) {
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .tool-header h1 {
        font-size: 2em;
    }
    
    .tab-buttons {
        flex-direction: column;
    }
    
    .tab-button {
        border-right: none;
        border-bottom: 1px solid var(--darker-accent);
    }
}