/* ========================================
   PromptCraft - Design System & Styles
   ======================================== */

/* CSS Variables - Design Tokens */
:root {
    /* Colors */
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-card: rgba(20, 20, 30, 0.7);
    --bg-card-hover: rgba(30, 30, 45, 0.8);

    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --text-muted: #606070;

    --accent-primary: #8b5cf6;
    --accent-secondary: #6366f1;
    --accent-glow: rgba(139, 92, 246, 0.3);
    --accent-gradient: linear-gradient(135deg, #8b5cf6 0%, #6366f1 50%, #3b82f6 100%);

    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;

    --border-color: rgba(255, 255, 255, 0.08);
    --border-glow: rgba(139, 92, 246, 0.5);

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 30px var(--accent-glow);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;

    /* Glass Effect */
    --glass-blur: blur(20px);
    --glass-bg: rgba(20, 20, 30, 0.6);
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Background Effects */
.bg-gradient {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(ellipse at 20% 20%, rgba(139, 92, 246, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(99, 102, 241, 0.05) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}

.bg-grid {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
    z-index: 0;
}

/* App Container */
.app-container {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-lg);
    min-height: 100vh;
}

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

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.logo-icon {
    width: 48px;
    height: 48px;
    background: var(--accent-gradient);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-glow);
}

.logo-icon svg {
    width: 28px;
    height: 28px;
    color: white;
}

.logo h1 {
    font-size: 2rem;
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tagline {
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 400;
}

.history-toggle {
    position: absolute;
    top: var(--spacing-xl);
    right: 0;
    width: 44px;
    height: 44px;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

.history-toggle:hover {
    background: var(--bg-card-hover);
    color: var(--accent-primary);
    border-color: var(--accent-primary);
}

.history-toggle svg {
    width: 22px;
    height: 22px;
}

/* Cards */
.card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
    transition: all var(--transition-base);
}

.card:hover {
    border-color: rgba(139, 92, 246, 0.2);
}

.section-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.step-badge {
    width: 32px;
    height: 32px;
    background: var(--accent-gradient);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.875rem;
    flex-shrink: 0;
}

.section-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
    flex-grow: 1;
}

.question-progress {
    font-size: 0.875rem;
    color: var(--text-secondary);
    background: rgba(139, 92, 246, 0.1);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
}

/* Input Section */
.input-wrapper {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.prompt-input {
    width: 100%;
    padding: var(--spacing-lg);
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-family: var(--font-primary);
    font-size: 1rem;
    resize: vertical;
    min-height: 100px;
    transition: all var(--transition-base);
}

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

.prompt-input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.detected-type {
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(139, 92, 246, 0.1);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    color: var(--accent-primary);
    display: none;
}

.detected-type.visible {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    animation: fadeIn var(--transition-base);
}

/* Creator Bar - Category Selector */
.creator-bar {
    background: #0d0e12;
    padding: 14px 18px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 16px;
    width: fit-content;
    flex-wrap: wrap;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.creator-label {
    color: #7a7f8a;
    font-size: 14px;
    white-space: nowrap;
}

.creator-options {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.creator-btn {
    background: #15171d;
    border: 1px solid #1e2028;
    color: #8a8f9a;
    padding: 8px 14px;
    border-radius: 999px;
    font-size: 13px;
    font-family: var(--font-primary);
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
}

.creator-btn:hover {
    background: #1a1c24;
    color: #c0c4cc;
    border-color: #2a2d38;
}

.creator-btn.selected {
    background: #12141a;
    color: #ffffff;
    border: 2px solid transparent;
    background-image: linear-gradient(#12141a, #12141a),
        linear-gradient(135deg, #ff6b6b, #feca57, #48dbfb, #ff9ff3, #54a0ff, #5f27cd);
    background-origin: border-box;
    background-clip: padding-box, border-box;
    box-shadow: 0 0 12px rgba(84, 160, 255, 0.3), 0 0 24px rgba(255, 107, 107, 0.2);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 500;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn svg {
    width: 20px;
    height: 20px;
}

.btn-primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: var(--shadow-md), 0 0 20px var(--accent-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), 0 0 30px var(--accent-glow);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.btn-secondary:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.btn-icon {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    padding: var(--spacing-sm) var(--spacing-md);
}

.btn-icon:hover {
    background: rgba(139, 92, 246, 0.1);
    color: var(--accent-primary);
    border-color: var(--accent-primary);
}

.btn-small {
    padding: var(--spacing-xs) var(--spacing-sm);
}

.btn-small svg {
    width: 16px;
    height: 16px;
}

/* Questions Section */
.questions-section {
    animation: slideUp var(--transition-slow);
}

.question-container {
    min-height: 200px;
}

.question-item {
    animation: fadeIn var(--transition-base);
}

.question-title {
    font-size: 1.125rem;
    font-weight: 500;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

/* MCQ Options */
.mcq-options {
    display: grid;
    gap: var(--spacing-sm);
}

.mcq-option {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
}

.mcq-option:hover {
    background: rgba(139, 92, 246, 0.1);
    border-color: rgba(139, 92, 246, 0.3);
}

.mcq-option.selected {
    background: rgba(139, 92, 246, 0.15);
    border-color: var(--accent-primary);
}

.mcq-option .check-circle {
    width: 24px;
    height: 24px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
    flex-shrink: 0;
}

.mcq-option.selected .check-circle {
    background: var(--accent-gradient);
    border-color: var(--accent-primary);
}

.mcq-option.selected .check-circle svg {
    opacity: 1;
}

.mcq-option .check-circle svg {
    width: 14px;
    height: 14px;
    color: white;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.mcq-option span {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    transition: color var(--transition-base);
}

.mcq-option:hover span,
.mcq-option.selected span {
    color: var(--text-primary);
}

/* Yes/No Toggle */
.yesno-container {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
}

.yesno-btn {
    flex: 1;
    max-width: 200px;
    padding: var(--spacing-lg);
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-base);
    text-align: center;
}

.yesno-btn:hover {
    transform: translateY(-2px);
}

.yesno-btn.selected {
    border-color: var(--accent-primary);
    box-shadow: 0 0 20px var(--accent-glow);
}

.yesno-btn.yes.selected {
    background: rgba(16, 185, 129, 0.15);
    border-color: var(--success);
}

.yesno-btn.no.selected {
    background: rgba(239, 68, 68, 0.15);
    border-color: var(--error);
}

.yesno-btn .icon {
    width: 48px;
    height: 48px;
    margin: 0 auto var(--spacing-sm);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
}

.yesno-btn.yes .icon {
    background: rgba(16, 185, 129, 0.2);
    color: var(--success);
}

.yesno-btn.no .icon {
    background: rgba(239, 68, 68, 0.2);
    color: var(--error);
}

.yesno-btn .icon svg {
    width: 24px;
    height: 24px;
}

.yesno-btn span {
    font-weight: 500;
    color: var(--text-secondary);
}

.yesno-btn.selected span {
    color: var(--text-primary);
}

/* Quick Select Chips */
.chips-container {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    justify-content: center;
}

.chip {
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-base);
}

.chip:hover {
    background: rgba(139, 92, 246, 0.1);
    border-color: rgba(139, 92, 246, 0.3);
    color: var(--text-primary);
}

.chip.selected {
    background: var(--accent-gradient);
    border-color: var(--accent-primary);
    color: white;
}

/* Question Navigation */
.question-nav {
    display: flex;
    justify-content: space-between;
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

/* Output Section */
.output-section {
    animation: slideUp var(--transition-slow);
}

.output-container {
    position: relative;
}

.output-text {
    padding: var(--spacing-lg);
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    font-family: var(--font-mono);
    font-size: 0.9375rem;
    line-height: 1.7;
    color: var(--text-primary);
    min-height: 150px;
    white-space: pre-wrap;
    word-wrap: break-word;
}

.output-actions {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
    flex-wrap: wrap;
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 10, 15, 0.9);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
}

.loader {
    text-align: center;
}

.loader-ring {
    width: 60px;
    height: 60px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    margin: 0 auto var(--spacing-lg);
    animation: spin 1s linear infinite;
}

.loader p {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* History Sidebar */
.history-sidebar {
    position: fixed;
    top: 0;
    right: -400px;
    width: 380px;
    max-width: 90vw;
    height: 100vh;
    background: var(--bg-secondary);
    border-left: 1px solid var(--border-color);
    padding: var(--spacing-lg);
    overflow-y: auto;
    transition: right var(--transition-slow);
    z-index: 50;
}

.history-sidebar.open {
    right: 0;
}

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

.sidebar-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
}

.history-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.history-item {
    padding: var(--spacing-md);
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
}

.history-item:hover {
    background: rgba(139, 92, 246, 0.1);
    border-color: rgba(139, 92, 246, 0.3);
}

.history-item .original {
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-xs);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.history-item .enhanced {
    font-size: 0.875rem;
    color: var(--text-secondary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.history-item .meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: var(--spacing-sm);
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--border-color);
}

.history-item .type-badge {
    font-size: 0.75rem;
    padding: 2px 8px;
    background: rgba(139, 92, 246, 0.2);
    border-radius: var(--radius-full);
    color: var(--accent-primary);
}

.history-item .date {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.history-empty {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--text-muted);
}

.history-empty svg {
    width: 48px;
    height: 48px;
    margin-bottom: var(--spacing-md);
    opacity: 0.3;
}

/* Toast */
.toast {
    position: fixed;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    z-index: 200;
    transition: transform var(--transition-base);
}

.toast.visible {
    transform: translateX(-50%) translateY(0);
}

.toast.success {
    border-color: var(--success);
}

/* Utility Classes */
.hidden {
    display: none !important;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .app-container {
        padding: var(--spacing-md);
    }

    .logo h1 {
        font-size: 1.5rem;
    }

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

    .section-header h2 {
        font-size: 1.125rem;
    }

    .prompt-input {
        padding: var(--spacing-md);
    }

    .btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.9375rem;
    }

    .yesno-container {
        flex-direction: row;
    }

    .yesno-btn {
        padding: var(--spacing-md);
    }

    .output-actions {
        flex-direction: column;
    }

    .output-actions .btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .history-toggle {
        top: var(--spacing-md);
    }

    .question-nav {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .question-nav .btn {
        width: 100%;
    }
}