/* ==========================================
   AI Prompt Playground - Styles
   Purple/Neon Theme
   ========================================== */

/* CSS Variables */
:root {
    /* Primary Colors */
    --color-primary: #bf5af2;
    --color-secondary: #9b4dca;
    --color-primary-dark: #8b3fc7;
    --color-primary-light: #d88aff;
    
    /* Background Colors */
    --color-bg: #0d0d0f;
    --color-bg-light: #1a1a1f;
    --color-bg-card: #16161a;
    
    /* Text Colors */
    --color-text: #e8e8e8;
    --color-text-muted: #a0a0a0;
    --color-text-bright: #ffffff;
    
    /* Accent Colors */
    --color-success: #32d74b;
    --color-error: #ff453a;
    
    /* Glow Effects */
    --glow-primary: 0 0 20px rgba(191, 90, 242, 0.4);
    --glow-primary-strong: 0 0 30px rgba(191, 90, 242, 0.6);
    --glow-text: 0 0 10px rgba(191, 90, 242, 0.5);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 400ms ease;
}

/* Reset & Base */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
}

/* Container */
.container {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-lg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-xl) 0;
}

.title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-text-bright);
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.title-icon {
    animation: sparkle 2s ease-in-out infinite;
}

@keyframes sparkle {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.7; transform: scale(1.1); }
}

.subtitle {
    color: var(--color-text-muted);
    font-size: 1.1rem;
}

/* Main Content */
.main {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

/* Prompt Section */
.prompt-section {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.label {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text-bright);
}

/* Select Dropdown */
.select {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 1rem;
    font-family: inherit;
    background-color: var(--color-bg-light);
    border: 2px solid var(--color-bg-light);
    border-radius: var(--radius-md);
    color: var(--color-text);
    cursor: pointer;
    transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23a0a0a0' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--spacing-md) center;
    padding-right: 2.5rem;
}

.select:hover {
    border-color: var(--color-secondary);
}

.select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: var(--glow-primary);
}

.select option {
    background-color: var(--color-bg-light);
    color: var(--color-text);
}

/* Textarea */
.textarea {
    width: 100%;
    min-height: 120px;
    padding: var(--spacing-md);
    font-size: 1rem;
    font-family: inherit;
    background-color: var(--color-bg-light);
    border: 2px solid var(--color-bg-light);
    border-radius: var(--radius-md);
    color: var(--color-text);
    resize: vertical;
    transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.textarea::placeholder {
    color: var(--color-text-muted);
}

.textarea:hover {
    border-color: var(--color-secondary);
}

.textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: var(--glow-primary);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 1rem;
    font-weight: 600;
    font-family: inherit;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: var(--color-text-bright);
    min-width: 180px;
    padding: var(--spacing-md) var(--spacing-xl);
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--glow-primary-strong);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0);
}

.btn-primary:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.btn-secondary {
    background-color: var(--color-bg-light);
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.9rem;
}

.btn-secondary:hover {
    background-color: var(--color-primary);
    color: var(--color-text-bright);
}

/* Loading State */
.btn.loading .btn-text {
    opacity: 0;
}

.btn.loading .btn-loader {
    display: block;
}

.btn-loader {
    display: none;
    position: absolute;
    width: 20px;
    height: 20px;
    border: 2px solid transparent;
    border-top-color: var(--color-text-bright);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Results Section */
.results-section {
    background-color: var(--color-bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-secondary);
    overflow: hidden;
    animation: fadeIn var(--transition-slow);
}

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

.results-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
    background-color: rgba(191, 90, 242, 0.1);
    border-bottom: 1px solid var(--color-secondary);
}

.results-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-primary-light);
}

.results-content {
    padding: var(--spacing-lg);
    overflow-x: auto;
}

.results-content p {
    margin-bottom: var(--spacing-md);
}

.results-content p:last-child {
    margin-bottom: 0;
}

/* Code Blocks */
.results-content pre {
    margin: var(--spacing-md) 0;
    border-radius: var(--radius-md);
    overflow-x: auto;
}

.results-content code {
    font-family: 'SF Mono', 'Fira Code', 'Monaco', Consolas, monospace;
    font-size: 0.9rem;
}

/* Inline code */
.results-content :not(pre) > code {
    background-color: var(--color-bg-light);
    padding: 0.2em 0.4em;
    border-radius: var(--radius-sm);
    color: var(--color-primary-light);
}

/* How It Works Section */
.how-it-works {
    margin-top: auto;
}

.how-toggle {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 1rem;
    font-weight: 600;
    font-family: inherit;
    background-color: var(--color-bg-light);
    border: 2px solid var(--color-bg-light);
    border-radius: var(--radius-md);
    color: var(--color-text);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.how-toggle:hover {
    border-color: var(--color-secondary);
}

.how-toggle:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: var(--glow-primary);
}

.toggle-icon {
    transition: transform var(--transition-normal);
}

.how-toggle[aria-expanded="true"] .toggle-icon {
    transform: rotate(180deg);
}

.how-content {
    overflow: hidden;
    animation: slideDown var(--transition-normal);
}

@keyframes slideDown {
    from { opacity: 0; max-height: 0; }
    to { opacity: 1; max-height: 500px; }
}

.how-inner {
    padding: var(--spacing-lg);
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-bg-light);
    border-top: none;
    border-radius: 0 0 var(--radius-md) var(--radius-md);
}

.how-inner h3 {
    color: var(--color-primary-light);
    font-size: 1.1rem;
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.how-inner h3:first-child {
    margin-top: 0;
}

.how-inner ul {
    padding-left: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.how-inner li {
    margin-bottom: var(--spacing-xs);
    color: var(--color-text-muted);
}

.how-inner li strong {
    color: var(--color-text);
}

.how-inner .note {
    padding: var(--spacing-md);
    background-color: rgba(191, 90, 242, 0.1);
    border-left: 3px solid var(--color-primary);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    color: var(--color-text-muted);
    margin-top: var(--spacing-md);
}

/* Footer */
.footer {
    text-align: center;
    padding: var(--spacing-xl) 0 var(--spacing-md);
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

.footer-link {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-link:hover {
    color: var(--color-primary-light);
    text-shadow: var(--glow-text);
}

/* Copy Success State */
.copy-success {
    color: var(--color-success) !important;
    border-color: var(--color-success) !important;
}

/* ==========================================
   Responsive Styles
   ========================================== */

/* Tablet and below */
@media (max-width: 768px) {
    :root {
        font-size: 15px;
    }
    
    .container {
        padding: var(--spacing-md);
    }
    
    .header {
        padding: var(--spacing-lg) 0;
        margin-bottom: var(--spacing-lg);
    }
    
    .title {
        font-size: 1.8rem;
        flex-direction: column;
        gap: var(--spacing-xs);
    }
    
    .subtitle {
        font-size: 1rem;
    }
    
    .btn-primary {
        width: 100%;
    }
    
    .results-header {
        flex-direction: column;
        gap: var(--spacing-sm);
        align-items: stretch;
    }
    
    .results-title {
        text-align: center;
    }
    
    #copy-btn {
        width: 100%;
    }
}

/* Mobile */
@media (max-width: 480px) {
    :root {
        font-size: 14px;
    }
    
    .title {
        font-size: 1.6rem;
    }
    
    .textarea {
        min-height: 100px;
    }
    
    .results-content {
        padding: var(--spacing-md);
    }
    
    .results-content pre {
        font-size: 0.85rem;
    }
    
    .how-inner {
        padding: var(--spacing-md);
    }
}

/* Small Mobile (320px+) */
@media (max-width: 360px) {
    .container {
        padding: var(--spacing-sm);
    }
    
    .title {
        font-size: 1.4rem;
    }
    
    .select,
    .textarea,
    .btn {
        font-size: 0.95rem;
    }
}

/* Reduce motion for accessibility */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}