/*
 * Bugs Apple Loves - Inverted Apple Design System
 * Black background, white text, clean minimalism
 */

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

:root {
    /* Inverted Apple palette */
    --bg-primary: #000000;
    --bg-secondary: #1d1d1f;
    --bg-tertiary: #2d2d2d;

    --text-primary: #f5f5f7;
    --text-secondary: #a1a1a6;
    --text-tertiary: #6e6e73;

    --accent: #2997ff;
    --accent-hover: #0077ed;

    --impact-red: #ff453a;
    --impact-orange: #ff9f0a;
    --impact-yellow: #ffd60a;
    --impact-green: #30d158;

    --border: #424245;
    --border-subtle: #2d2d2d;

    /* Typography scale - Apple-like */
    --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", Helvetica, Arial, sans-serif;
    --font-mono: "SF Mono", SFMono-Regular, ui-monospace, Menlo, Monaco, Consolas, monospace;

    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 48px;
    --space-2xl: 80px;
    --space-3xl: 120px;

    /* Container */
    --container-max: 980px;
    --container-padding: 24px;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    font-size: 17px;
}

/* ========== Hero Section ========== */
.hero {
    min-height: 70vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--space-3xl) var(--container-padding);
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
}

.hero-title {
    font-size: clamp(56px, 12vw, 96px);
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.15;
    margin-bottom: var(--space-lg);
    padding-bottom: 0.1em;
    background: linear-gradient(180deg, #ffffff 0%, #a1a1a6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(21px, 4vw, 28px);
    font-weight: 400;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* ========== Total Impact Section ========== */
.total-impact {
    padding: var(--space-2xl) var(--container-padding);
    text-align: center;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-subtle);
}

.impact-container {
    max-width: var(--container-max);
    margin: 0 auto;
}

.impact-label {
    font-size: 14px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-tertiary);
    margin-bottom: var(--space-md);
}

.impact-value {
    font-size: clamp(40px, 10vw, 80px);
    font-weight: 700;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--impact-red) 0%, var(--impact-orange) 50%, var(--impact-yellow) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-sm);
}

.impact-sublabel {
    font-size: 17px;
    color: var(--text-tertiary);
    font-style: italic;
}

/* ========== Methodology Section ========== */
.methodology {
    padding: var(--space-3xl) var(--container-padding);
    background: var(--bg-secondary);
}

.methodology-container {
    max-width: var(--container-max);
    margin: 0 auto;
}

.section-title {
    font-size: clamp(32px, 6vw, 48px);
    font-weight: 600;
    letter-spacing: -0.02em;
    text-align: center;
    margin-bottom: var(--space-md);
}

.section-subtitle {
    font-size: 21px;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: var(--space-xl);
}

.formula-explanation {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
}

.formula-block {
    background: var(--bg-primary);
    border-radius: 18px;
    padding: var(--space-lg);
    border: 1px solid var(--border-subtle);
}

.formula-block h3 {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-tertiary);
    margin-bottom: var(--space-sm);
}

.formula-block code {
    display: block;
    font-family: var(--font-mono);
    font-size: 15px;
    color: var(--accent);
    margin-bottom: var(--space-md);
    word-break: break-word;
}

.formula-block p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.5;
}

.formula-block.final {
    border-color: var(--impact-orange);
    background: linear-gradient(135deg, rgba(255, 159, 10, 0.1) 0%, rgba(255, 69, 58, 0.1) 100%);
}

.formula-block.final code {
    color: var(--impact-orange);
}

/* ========== Bug Cards ========== */
#bugs-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-2xl) var(--container-padding);
}

.bug-card {
    background: var(--bg-secondary);
    border-radius: 24px;
    overflow: hidden;
    margin-bottom: var(--space-2xl);
    border: 1px solid var(--border-subtle);
}

/* Bug Header */
.bug-header {
    padding: var(--space-xl);
    text-align: center;
    border-bottom: 1px solid var(--border-subtle);
}

.bug-number {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-tertiary);
    margin-bottom: var(--space-sm);
}

.bug-title {
    font-size: clamp(28px, 5vw, 48px);
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-sm);
}

.bug-subtitle {
    font-size: 21px;
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
}

.bug-description {
    font-size: 17px;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.6;
}

.bug-platforms {
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
    margin-top: var(--space-lg);
}

.platform-tag {
    font-size: 12px;
    font-weight: 500;
    padding: 6px 12px;
    background: var(--bg-tertiary);
    border-radius: 100px;
    color: var(--text-secondary);
}

/* Bug Media */
.bug-media {
    padding: var(--space-xl);
    background: var(--bg-primary);
}

.bug-screenshot {
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    display: block;
    border-radius: 12px;
    border: 1px solid var(--border);
}

.bug-screenshot-placeholder {
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    aspect-ratio: 16/10;
    background: var(--bg-tertiary);
    border-radius: 12px;
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-tertiary);
    font-size: 14px;
}

.bug-video-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    margin-top: var(--space-lg);
    color: var(--accent);
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
}

.bug-video-link:hover {
    color: var(--accent-hover);
}

/* Bug Formula Section */
.bug-formula {
    padding: var(--space-xl);
    border-top: 1px solid var(--border-subtle);
}

.formula-title {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-tertiary);
    margin-bottom: var(--space-lg);
    text-align: center;
}

/* User Scope */
.formula-scope {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1px;
    background: var(--border-subtle);
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: var(--space-xl);
}

.scope-item {
    background: var(--bg-primary);
    padding: var(--space-lg);
    text-align: center;
}

.scope-symbol {
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--accent);
    margin-bottom: var(--space-xs);
}

.scope-value {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
}

.scope-label {
    font-size: 12px;
    color: var(--text-tertiary);
}

/* Behavioral Flow */
.formula-flow {
    margin-bottom: var(--space-xl);
}

.flow-title {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
    text-align: center;
}

.flow-steps {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.flow-step {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: var(--space-md);
    align-items: center;
    padding: var(--space-md);
    background: var(--bg-primary);
    border-radius: 12px;
}

.step-symbol {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--accent);
    background: var(--bg-secondary);
    padding: 4px 8px;
    border-radius: 4px;
}

.step-content {
    min-width: 0;
}

.step-action {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.step-description {
    font-size: 13px;
    color: var(--text-tertiary);
}

.step-time {
    font-family: var(--font-mono);
    font-size: 14px;
    color: var(--text-secondary);
    text-align: right;
    white-space: nowrap;
}

.step-time .retries {
    font-size: 11px;
    color: var(--text-tertiary);
    display: block;
}

/* Power User Tax */
.formula-tax {
    margin-bottom: var(--space-xl);
    padding: var(--space-lg);
    background: var(--bg-primary);
    border-radius: 12px;
    border: 1px dashed var(--border);
}

.tax-title {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
}

.tax-items {
    display: grid;
    gap: var(--space-sm);
}

.tax-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 14px;
}

.tax-item-left {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.tax-item-symbol {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--impact-orange);
}

.tax-item-action {
    color: var(--text-secondary);
}

.tax-item-right {
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--text-tertiary);
}

/* Bug Impact */
.bug-impact {
    padding: var(--space-xl);
    background: linear-gradient(135deg, rgba(255, 69, 58, 0.15) 0%, rgba(255, 159, 10, 0.15) 100%);
    border-top: 1px solid var(--border-subtle);
    text-align: center;
}

.impact-section-title {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-tertiary);
    margin-bottom: var(--space-lg);
}

.impact-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.impact-stat {
    padding: var(--space-lg);
    background: rgba(0, 0, 0, 0.3);
    border-radius: 12px;
}

.impact-stat-label {
    font-size: 12px;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-sm);
}

.impact-stat-value {
    font-size: clamp(24px, 4vw, 36px);
    font-weight: 600;
}

.impact-stat-value.time {
    color: var(--impact-orange);
}

.impact-stat-value.money {
    color: var(--impact-yellow);
}

.impact-stat-value.engineers {
    color: var(--impact-green);
}

.impact-stat-note {
    font-size: 13px;
    color: var(--text-tertiary);
    margin-top: var(--space-sm);
}

/* The Equation */
.bug-equation {
    padding: var(--space-xl);
    background: var(--bg-tertiary);
    text-align: center;
    border-top: 1px solid var(--border-subtle);
}

.equation-title {
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-tertiary);
    margin-bottom: var(--space-lg);
}

.equation-display {
    max-width: 800px;
    margin: 0 auto;
}

.equation-math {
    display: block;
    font-family: 'SF Mono', Monaco, 'Cascadia Code', monospace;
    font-size: clamp(14px, 2.5vw, 18px);
    color: var(--text-secondary);
    background: var(--bg-secondary);
    padding: var(--space-lg);
    border-radius: 8px;
    margin-bottom: var(--space-md);
    overflow-x: auto;
}

.equation-math sub {
    font-size: 0.7em;
    color: var(--accent);
}

.equation-result {
    font-size: clamp(16px, 3vw, 20px);
    color: var(--text-tertiary);
}

.equation-result strong {
    color: var(--impact-red);
}

/* The Verdict */
.bug-verdict {
    padding: var(--space-xl);
    background: var(--bg-primary);
    text-align: center;
    border-top: 1px solid var(--border-subtle);
}

.verdict-text {
    font-size: clamp(21px, 4vw, 32px);
    font-weight: 500;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.4;
}

.verdict-text strong {
    color: var(--impact-orange);
    font-weight: 600;
}

/* Bug Footer */
.bug-footer {
    padding: var(--space-lg) var(--space-xl);
    background: var(--bg-tertiary);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.bug-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.bug-tag {
    font-size: 12px;
    padding: 4px 10px;
    background: var(--bg-secondary);
    border-radius: 100px;
    color: var(--text-tertiary);
}

.bug-date {
    font-size: 13px;
    color: var(--text-tertiary);
}

.bug-date strong {
    color: var(--impact-red);
}

.bug-source {
    font-size: 13px;
    color: var(--text-tertiary);
    margin-top: var(--space-sm);
}

.bug-source a {
    color: var(--accent);
    text-decoration: none;
}

.bug-source a:hover {
    text-decoration: underline;
}

/* ========== Footer ========== */
.footer {
    padding: var(--space-2xl) var(--container-padding);
    border-top: 1px solid var(--border-subtle);
    text-align: center;
}

.footer-container {
    max-width: var(--container-max);
    margin: 0 auto;
}

.footer-disclaimer-prominent {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--space-lg);
    padding: var(--space-md) var(--space-lg);
    background: var(--bg-tertiary);
    border-radius: 8px;
    display: inline-block;
}

.footer-text {
    font-size: 21px;
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
}

.footer-disclaimer {
    font-size: 14px;
    color: var(--text-tertiary);
    max-width: 600px;
    margin: 0 auto var(--space-lg);
}

.footer-cta {
    font-size: 15px;
    color: var(--text-secondary);
}

.footer-cta a {
    color: var(--accent);
    text-decoration: none;
}

.footer-cta a:hover {
    text-decoration: underline;
}

/* ========== Loading State ========== */
.loading {
    text-align: center;
    padding: var(--space-2xl);
    color: var(--text-tertiary);
    font-size: 17px;
}

.loading .dots::after {
    content: "";
    animation: dots 1.5s infinite;
}

@keyframes dots {
    0%, 20% { content: "."; }
    40% { content: ".."; }
    60%, 100% { content: "..."; }
}

/* ========== Responsive ========== */
@media (max-width: 768px) {
    .hero {
        min-height: 50vh;
        padding: var(--space-2xl) var(--container-padding);
    }

    .bug-header,
    .bug-formula,
    .bug-impact,
    .bug-verdict {
        padding: var(--space-lg);
    }

    .bug-media {
        padding: var(--space-lg);
    }

    .flow-step {
        grid-template-columns: 1fr;
        gap: var(--space-sm);
    }

    .step-time {
        text-align: left;
    }

    .bug-footer {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* ========== Editable Values ========== */
.editable {
    cursor: pointer;
    border-bottom: 1px dashed var(--text-tertiary);
    transition: all 0.2s ease;
}

.editable:hover {
    border-bottom-color: var(--accent);
    color: var(--accent);
}

.editable-input {
    background: var(--bg-tertiary);
    border: 1px solid var(--accent);
    border-radius: 4px;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: inherit;
    padding: 2px 6px;
    width: auto;
    min-width: 60px;
    max-width: 120px;
    text-align: center;
}

.editable-input:focus {
    outline: none;
    box-shadow: 0 0 0 2px rgba(41, 151, 255, 0.3);
}

/* Editable hint */
.editable-hint {
    font-size: 12px;
    color: var(--text-tertiary);
    text-align: center;
    margin-top: var(--space-sm);
    font-style: italic;
}

/* Reset button */
.reset-button {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 13px;
    padding: 8px 16px;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-top: var(--space-md);
}

.reset-button:hover {
    background: var(--bg-secondary);
    border-color: var(--accent);
    color: var(--accent);
}

/* Modified indicator */
.modified-indicator {
    display: inline-block;
    width: 8px;
    height: 8px;
    background: var(--impact-orange);
    border-radius: 50%;
    margin-left: 6px;
    vertical-align: middle;
}

/* Scope items - make editable */
.scope-value.editable {
    border-bottom: none;
    background: var(--bg-tertiary);
    padding: 4px 8px;
    border-radius: 6px;
}

.scope-value.editable:hover {
    background: var(--bg-secondary);
}

/* Step time - editable */
.step-time .editable {
    display: inline-block;
}