/* ==========================================================================
   AI Prompting Cheat Sheet - Neo-Brutalism Theme (Portfolio Design System)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
    /* Base Palette from Portfolio Design System */
    --color-primary: #000000;
    --color-secondary: #FFFFFF;
    --color-cta: #00C2CB;
    --color-accent-yellow: #FFD700;
    --color-accent-magenta: #FF00FF;
    --color-background: #F5F5DC;
    --color-card-bg: #FFFFFF;
    --color-card-body: #FFFDF7;
    --color-text: #000000;
    --color-muted: #444444;

    --border-width: 3px;
    --border-color: #000000;

    /* Shadows */
    --shadow-sm: 3px 3px 0 0 #000000;
    --shadow-md: 6px 6px 0 0 #000000;
    --shadow-lg: 8px 8px 0 0 #000000;
    --shadow-hover: 10px 10px 0 0 #000000;

    /* Layout */
    --max-width: 1200px;
    --border-radius: 0px;

    /* Status Colors */
    --star-color: #FFD700;
    --star-stroke: #000000;
    --check-color: #00C2CB;
    --check-bg-active: #E0F9FA;
}

/* Reset & Global */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scrollbar-gutter: stable;
}

body {
    background-color: var(--color-background);
    color: var(--color-text);
    font-family: 'Space Grotesk', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    line-height: 1.5;
    overflow-x: hidden;
    position: relative;
    min-height: 100vh;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}
::-webkit-scrollbar-track {
    background: var(--color-background);
    border-left: 2px solid var(--border-color);
}
::-webkit-scrollbar-thumb {
    background: var(--color-cta);
    border: 2px solid var(--border-color);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--color-accent-yellow);
}

/* App Container */
.app-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 24px 20px 60px 20px;
    position: relative;
}

/* Back Link */
.back-portfolio-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: #FFFFFF;
    color: #000000 !important;
    text-decoration: none !important;
    border: 2px solid #000000;
    box-shadow: var(--shadow-sm);
    padding: 6px 14px;
    font-size: 0.85rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 16px;
    transition: transform 120ms ease, box-shadow 120ms ease, background-color 120ms ease;
}
.back-portfolio-link:hover {
    background: var(--color-accent-yellow);
    transform: translate(2px, 2px);
    box-shadow: 1px 1px 0 0 #000000;
}

/* Header */
.main-header {
    margin-bottom: 32px;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 24px;
    flex-wrap: wrap;
}

.logo-area {
    flex: 1;
    min-width: 320px;
}

.badge-ai {
    display: inline-block;
    background: var(--color-accent-magenta);
    color: #000000;
    font-size: 0.8rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 4px 10px;
    border: 2px solid #000000;
    box-shadow: var(--shadow-sm);
    margin-bottom: 8px;
}

#main-title {
    font-size: clamp(2.2rem, 5vw, 3.4rem);
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: -0.02em;
    color: var(--color-text);
    text-shadow: 4px 4px 0 var(--color-cta);
    line-height: 1.1;
    margin: 8px 0 12px 0;
}

.subtitle {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--color-muted);
    max-width: 650px;
}

/* Stats Dashboard */
.stats-dashboard {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.stat-box {
    background: var(--color-card-bg);
    border: var(--border-width) solid var(--border-color);
    box-shadow: var(--shadow-md);
    padding: 16px 20px;
    min-width: 170px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.stat-value {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--color-text);
    line-height: 1;
    margin-bottom: 6px;
}

.stat-label {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--color-muted);
}

.progress-bar-container {
    width: 100%;
    height: 12px;
    background: #EEEEEE;
    border: 2px solid var(--border-color);
    margin-top: 10px;
    position: relative;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background: var(--color-cta);
    transition: width 0.3s ease;
}

/* Controls Bar */
.controls-bar {
    position: sticky;
    top: 0;
    z-index: 50;
    background: var(--color-background);
    padding: 16px 0 20px 0;
    border-bottom: var(--border-width) solid var(--border-color);
    margin-bottom: 32px;
}

.search-actions-row {
    display: flex;
    gap: 16px;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: 16px;
}

.search-wrapper {
    flex: 1;
    min-width: 280px;
    background: #FFFFFF;
    border: var(--border-width) solid var(--border-color);
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    padding: 0 14px;
    position: relative;
    transition: transform 120ms ease, box-shadow 120ms ease;
}

.search-wrapper:focus-within {
    box-shadow: var(--shadow-md);
    transform: translate(-1px, -1px);
}

.search-icon {
    width: 20px;
    height: 20px;
    color: var(--color-primary);
    flex-shrink: 0;
    margin-right: 10px;
}

#search-input {
    width: 100%;
    padding: 12px 0;
    border: none;
    outline: none;
    background: transparent;
    font-family: inherit;
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text);
}

#search-input::placeholder {
    color: #888888;
    font-weight: 500;
}

.clear-search-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 4px;
}

.bulk-actions {
    display: flex;
    gap: 10px;
}

.action-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: #FFFFFF;
    color: var(--color-text);
    border: var(--border-width) solid var(--border-color);
    box-shadow: var(--shadow-sm);
    padding: 10px 16px;
    font-size: 0.85rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    cursor: pointer;
    transition: transform 120ms ease, box-shadow 120ms ease, background-color 120ms ease;
}

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

.action-btn:hover {
    background: var(--color-accent-yellow);
    transform: translate(2px, 2px);
    box-shadow: 1px 1px 0 0 #000000;
}

/* Categories Scroll Bar */
.categories-scroll-wrapper {
    position: relative;
    overflow: hidden;
}

.categories-container {
    display: flex;
    gap: 10px;
    overflow-x: auto;
    padding-bottom: 6px;
    scrollbar-width: thin;
}

.category-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: #FFFFFF;
    color: var(--color-text);
    border: 2px solid var(--border-color);
    box-shadow: 3px 3px 0 0 #000000;
    padding: 8px 16px;
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    cursor: pointer;
    white-space: nowrap;
    transition: transform 120ms ease, box-shadow 120ms ease, background-color 120ms ease;
}

.category-chip svg {
    width: 15px;
    height: 15px;
}

.category-chip:hover {
    background: #FAF5E4;
    transform: translate(-1px, -1px);
    box-shadow: 4px 4px 0 0 #000000;
}

.category-chip.active {
    background: var(--color-cta);
    color: #000000;
    transform: translate(2px, 2px);
    box-shadow: 1px 1px 0 0 #000000;
    border-color: #000000;
}

.category-chip[data-category="starred"].active {
    background: var(--color-accent-yellow);
}

/* Results Summary */
.results-summary {
    display: inline-block;
    background: var(--color-accent-yellow);
    color: #000000;
    font-size: 0.9rem;
    font-weight: 800;
    text-transform: uppercase;
    border: 2px solid #000000;
    box-shadow: var(--shadow-sm);
    padding: 6px 14px;
    margin-top: 12px;
}

/* Empty State */
.empty-state {
    text-align: center;
    background: #FFFFFF;
    border: var(--border-width) solid var(--border-color);
    box-shadow: var(--shadow-lg);
    padding: 48px 24px;
    margin: 40px auto;
    max-width: 500px;
}

.empty-icon {
    width: 56px;
    height: 56px;
    color: var(--color-primary);
    margin-bottom: 16px;
}

.empty-state h3 {
    font-size: 1.5rem;
    font-weight: 800;
    text-transform: uppercase;
    margin-bottom: 8px;
}

.empty-state p {
    color: var(--color-muted);
    font-weight: 600;
    margin-bottom: 20px;
}

.accent-btn {
    background: var(--color-cta);
    color: #000000;
    border: var(--border-width) solid var(--border-color);
    box-shadow: var(--shadow-sm);
    padding: 12px 24px;
    font-weight: 800;
    text-transform: uppercase;
    cursor: pointer;
    transition: transform 120ms ease, box-shadow 120ms ease;
}

.accent-btn:hover {
    transform: translate(2px, 2px);
    box-shadow: 1px 1px 0 0 #000000;
}

/* Category Sections */
.category-section {
    margin-bottom: 40px;
}

.category-section-title {
    display: inline-block;
    font-size: 1.4rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.02em;
    background: var(--color-accent-yellow);
    color: #000000;
    border: var(--border-width) solid var(--border-color);
    box-shadow: var(--shadow-sm);
    padding: 6px 18px;
    margin-bottom: 16px;
}

.category-divider {
    display: none;
}

.category-grid {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* Question Cards */
.question-card {
    background: var(--color-card-bg);
    border: var(--border-width) solid var(--border-color);
    box-shadow: var(--shadow-md);
    transition: transform 120ms ease, box-shadow 120ms ease;
    overflow: hidden;
}

.question-card:hover {
    transform: translate(-2px, -2px);
    box-shadow: var(--shadow-lg);
}

.question-card.mastered {
    border-left: 10px solid #059669;
}

.card-header-wrapper {
    padding: 16px 20px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    background: #FFFFFF;
    transition: background-color 120ms ease;
}

.card-header-wrapper:hover {
    background: #FFFDF5;
}

.card-header-main {
    flex: 1;
}

.question-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.35;
    margin: 0;
}

.q-prefix {
    display: inline-block;
    background: var(--color-accent-yellow);
    color: #000000;
    border: 2px solid #000000;
    padding: 1px 6px;
    font-size: 0.85rem;
    font-weight: 800;
    margin-right: 8px;
}

.card-header-meta {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

/* Star Button */
.star-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: #FFFFFF;
    color: #000000;
    border: 2px solid var(--border-color);
    box-shadow: 2px 2px 0 0 #000000;
    padding: 6px 12px;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    cursor: pointer;
    transition: transform 120ms ease, box-shadow 120ms ease;
}

.star-btn svg {
    width: 15px;
    height: 15px;
    fill: none;
    stroke: #000000;
    stroke-width: 2;
}

.star-btn:hover {
    transform: translate(-1px, -1px);
    box-shadow: 3px 3px 0 0 #000000;
}

.star-btn.starred {
    background: var(--color-accent-yellow);
}

.star-btn.starred svg {
    fill: #000000;
}

/* Mastery Checkbox */
.mastery-checkbox-wrapper {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: #FFFFFF;
    color: #000000;
    border: 2px solid var(--border-color);
    box-shadow: 2px 2px 0 0 #000000;
    padding: 6px 12px;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    cursor: pointer;
    transition: transform 120ms ease, box-shadow 120ms ease;
}

.mastery-checkbox-wrapper:hover {
    transform: translate(-1px, -1px);
    box-shadow: 3px 3px 0 0 #000000;
}

.mastery-checkbox {
    width: 16px;
    height: 16px;
    border: 2px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    background: #FFFFFF;
}

.mastery-checkbox svg {
    width: 12px;
    height: 12px;
    display: none;
}

.mastery-checkbox.checked {
    background: var(--color-cta);
}

.mastery-checkbox.checked svg {
    display: block;
    color: #000000;
}

/* Answer Accordion */
.answer-wrapper {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
    background: var(--color-card-body);
}

.question-card.open .answer-wrapper {
    max-height: 2000px;
    transition: max-height 0.3s ease-in-out;
    border-top: var(--border-width) solid var(--border-color);
}

.answer-content {
    padding: 24px 20px;
}

.answer-text {
    font-size: 1.05rem;
    line-height: 1.7;
    color: #111111;
    font-weight: 500;
}

.answer-text p {
    margin-bottom: 12px;
}

.answer-text p:last-child {
    margin-bottom: 0;
}

.answer-footer {
    margin-top: 20px;
    padding-top: 16px;
    border-top: 2px dashed #CCCCCC;
    display: flex;
    justify-content: flex-end;
}

.copy-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--color-accent-yellow);
    color: #000000;
    border: 2px solid var(--border-color);
    box-shadow: 3px 3px 0 0 #000000;
    padding: 8px 16px;
    font-size: 0.85rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    cursor: pointer;
    transition: transform 120ms ease, box-shadow 120ms ease;
}

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

.copy-btn:hover {
    transform: translate(2px, 2px);
    box-shadow: 1px 1px 0 0 #000000;
}

.copy-btn.copied {
    background: var(--color-cta);
}

/* Back to Top */
.back-to-top-btn {
    position: fixed;
    bottom: 28px;
    right: 28px;
    width: 48px;
    height: 48px;
    background: var(--color-cta);
    color: #000000;
    border: var(--border-width) solid var(--border-color);
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 90;
    transition: transform 120ms ease, box-shadow 120ms ease;
    opacity: 0;
    pointer-events: none;
}

.back-to-top-btn.visible {
    opacity: 1;
    pointer-events: auto;
}

.back-to-top-btn:hover {
    background: var(--color-accent-yellow);
    transform: translate(-2px, -2px);
    box-shadow: var(--shadow-md);
}

.back-to-top-btn svg {
    width: 22px;
    height: 22px;
}

/* Footer */
.main-footer {
    margin-top: 50px;
    padding-top: 24px;
    border-top: var(--border-width) solid var(--border-color);
    text-align: center;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--color-muted);
}

/* Responsive */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
    }
    .stats-dashboard {
        width: 100%;
    }
    .stat-box {
        flex: 1;
    }
    .card-header-wrapper {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }
    .card-header-meta {
        width: 100%;
        justify-content: flex-start;
    }
}