/* ==========================================================================
   STYLE.CSS - REFINED INDUSTRIAL DOCUMENT (ALTERNATING ACCORDIONS)
   ========================================================================== */

/* pt-mono-regular - latin_latin-ext */
@font-face {
  font-display: swap; 
  font-family: 'PT Mono';
  font-style: normal;
  font-weight: 400;
  src: url('../fonts/pt-mono-v14-latin_latin-ext-regular.eot'); 
  src: url('../fonts/pt-mono-v14-latin_latin-ext-regular.eot?#iefix') format('embedded-opentype'), 
       url('../fonts/pt-mono-v14-latin_latin-ext-regular.woff2') format('woff2'), 
       url('../fonts/pt-mono-v14-latin_latin-ext-regular.woff') format('woff'), 
       url('../fonts/pt-mono-v14-latin_latin-ext-regular.ttf') format('truetype'), 
       url('../fonts/pt-mono-v14-latin_latin-ext-regular.svg#PTMono') format('svg'); 
}

/* --- 1. DESIGN TOKENS & HIERARCHICAL SETTINGS --- */
:root {
    /* Base Surfaces */
    --bg-canvas: #FBFBF9;       
    --bg-card:   #FFFFFF;       
    --bg-subtle: #F8FAFC;       
    --bg-peach:  #FFF0E5;       /* ÚJ: Lágy pasztell barack háttér a páros elemeknek */
    --gray-base: #F1F5F9;       
    --gray-header: rgba(18, 24, 38, 0.1); 
    --bg-dark:   #121826;       

    /* Text Colors */
    --ink-black: #121826;       
    --ink-muted: #475569;       

    /* MASTER BORDERS (ONLY FOR TOP-LEVEL MAIN CONTAINERS) */
    --border-master: 2px solid var(--ink-black);
    --shadow-master: 5px 5px 0px var(--ink-black);

    /* ULTRA-DELICATE BORDERS (10% OPACITY FOR ALL INTERNAL CARDS) */
    --border-delicate: 1px solid rgba(18, 24, 38, 0.1);
    
    /* VASTAG BELSŐ KERET (A páratlan KK elemekhez) */
    --border-thick: 2px solid var(--ink-black);

    /* SEMANTIC LETTER-SPACING TOKENS */
    --tracking-badge:  0.085em;  
    --tracking-title:  0.045em;  
    --tracking-header: 0.030em;  
    --tracking-meta:   0.025em;  
    --tracking-body:   0.015em;  
}

/* --- 2. BASE SETTINGS & TYPOGRAPHY --- */
html, body {
    font-size: 16px;
}

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'PT Mono', monospace !important;
}

body {
    background-color: var(--bg-canvas);
    color: var(--ink-black);
    line-height: 1.65;
    padding: 40px 20px;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;

    letter-spacing: var(--tracking-body);

    hyphens: auto;
    -webkit-hyphens: auto;
    -ms-hyphens: auto;
    overflow-wrap: break-word;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

/* ==========================================================================
   3. TRACKING
   ========================================================================== */

.role-tag,
.clean-list-number,
.step-pill,
.defect-val,
.kk-tag,
.accordion-icon,
.feature-box-tag,
.block-label,
.methodology-bullet,
.defect-group-title {
    letter-spacing: var(--tracking-badge);
}

header h1,
.main-accordion-title {
    letter-spacing: var(--tracking-title);
}

.methodology-subtitle,
.kk-summary-title,
.card-header-inner h4,
.methodology-text strong,
.clean-list-body strong,
.step-body strong,
.card-meta-box strong {
    letter-spacing: var(--tracking-header);
}

.card-meta-box,
.defect-registry-subtitle,
.feature-box-desc,
.section-intro-text,
.footer-main-box li {
    letter-spacing: var(--tracking-meta);
}

p,
.thesis-core p,
.methodology-text span,
.clean-list-body span,
.step-body span,
.block-large-text,
.block-normal-text,
.standalone-card p,
.defect-desc,
.ux-solutions-simple-list li {
    letter-spacing: var(--tracking-body);
}

/* --- 4. HEADER (MASTER CONTAINER) --- */
header {
    border: var(--border-master);
    background: var(--bg-card);
    box-shadow: var(--shadow-master);
    padding: 28px;
    margin-bottom: 28px;
}

header h1 {
    font-size: 1.8rem;
    font-weight: 800;
    line-height: 1.25;
    text-transform: uppercase;
}

/* ==========================================================================
   5. MAIN ACCORDION SYSTEM
   ========================================================================== */

.main-accordion-box {
    border: var(--border-master);
    background-color: var(--bg-card);
    box-shadow: var(--shadow-master);
    margin-bottom: 28px;
    width: 100%;
    transition: box-shadow 0.15s ease;
}

.main-accordion-summary {
    list-style: none;
    cursor: pointer;
    padding: 22px 28px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    user-select: none;
    background-color: var(--bg-card);
}

.main-accordion-summary::-webkit-details-marker {
    display: none;
}

.main-accordion-summary:focus-visible {
    outline: 2px solid var(--ink-black);
    outline-offset: 2px;
}

.main-accordion-box[open] .main-accordion-summary {
    border-bottom: var(--border-master);
}

.main-accordion-title {
    font-size: 1.35rem;
    font-weight: 800;
    text-transform: uppercase;
    color: var(--ink-black);
}

.accordion-icon {
    font-weight: 800;
    background: var(--bg-dark);
    color: #FFFFFF;
    padding: 6px 14px;
    flex-shrink: 0;
}

details[open] > summary .accordion-icon::before {
    content: "[ CLOSE − ]";
}

details:not([open]) > summary .accordion-icon::before {
    content: "[ EXPAND + ]";
}

.main-accordion-content {
    padding: 28px;
    background-color: var(--bg-card);
}

/* ==========================================================================
   6. INTERNAL ELEMENTS
   ========================================================================== */

/* --- 1. THESIS CORE --- */
.thesis-core {
    column-count: 3;
    column-gap: 32px;
    column-rule: 1px dashed var(--gray-header);
    text-align: justify;
}

.thesis-core p {
    background: transparent;
    border: none;
    padding: 0;
    margin-bottom: 16px;
    line-height: 1.65;
    color: var(--ink-black);
    break-inside: avoid;
    -webkit-column-break-inside: avoid;
}

.thesis-core p:last-child {
    margin-bottom: 0;
}

/* --- 2. METHODOLOGY --- */
.methodology-header-bar {
    border-bottom: 1px solid var(--gray-header);
    padding-bottom: 8px;
    margin-bottom: 16px;
}

.methodology-subtitle {
    font-weight: 700;
    text-transform: uppercase;
    color: var(--ink-muted);
}

.methodology-list {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.methodology-item {
    background: var(--bg-subtle);
    border: var(--border-delicate);
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.methodology-bullet {
    font-weight: 800;
    background: transparent;
    color: var(--ink-black);
    border: var(--border-delicate);
    padding: 1px 6px;
    align-self: flex-start;
}

.methodology-text strong {
    display: block;
    margin-bottom: 4px;
    color: var(--ink-black);
}

.methodology-text span {
    color: var(--ink-muted);
}

/* --- 3. IMPROVEMENT OPPORTUNITIES --- */
.ux-solutions-simple-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 16px;
}

.ux-solutions-simple-list li {
    background: var(--bg-subtle);
    border: var(--border-delicate);
    padding: 12px 16px;
    font-weight: 400;
    color: var(--ink-black);
    line-height: 1.6;
}

/* --- 4. I. ERROR ANALYSIS (KK1–+1 ALTERNATING DESIGN) --- */
.feature-box-tag {
    display: inline-block;
    background: transparent;
    color: var(--ink-black);
    border: var(--border-delicate);
    font-weight: 700;
    padding: 2px 8px;
    margin-bottom: 8px;
}

.feature-box-desc {
    color: var(--ink-muted);
    margin-bottom: 24px;
}

/* KK ACCORDION */
details.kk-accordion {
    box-shadow: none;
    margin-bottom: 16px;
}

summary.kk-summary {
    list-style: none;
    cursor: pointer;
    padding: 16px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    user-select: none;
}

summary.kk-summary::-webkit-details-marker {
    display: none;
}

.kk-summary-left {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.kk-tag {
    font-weight: 800;
    background: var(--bg-dark);
    color: #FFFFFF;
    padding: 2px 6px;
    display: inline-block;
}

.kk-summary-title {
    font-weight: 800;
    font-size: 1.05rem;
}

.kk-accordion-content {
    padding: 20px;
}

/* ----------------------------------------------------
   (ALTERNATING) 
   ---------------------------------------------------- */

/* ODD ELEMENTS (1, 3, 5, 7): White background, THICK border */
details.kk-accordion:nth-child(odd) {
    border: var(--border-thick);
    background: var(--bg-card);
}
details.kk-accordion:nth-child(odd) summary.kk-summary {
    background: var(--bg-card);
}
details.kk-accordion:nth-child(odd)[open] summary.kk-summary {
    border-bottom: var(--border-thick);
    background: var(--bg-card);
}
details.kk-accordion:nth-child(odd) .kk-accordion-content.unboxed-layout {
    background: var(--bg-card);
}

/* EVEN ELEMENTS (2, 4, 6): Peach background, SOFT border */
details.kk-accordion:nth-child(even) {
    border: var(--border-delicate);
    background: var(--bg-peach);
}
details.kk-accordion:nth-child(even) summary.kk-summary {
    background: var(--bg-peach);
}
details.kk-accordion:nth-child(even)[open] summary.kk-summary {
    border-bottom: var(--border-delicate);
    background: var(--bg-peach);
}
details.kk-accordion:nth-child(even) .kk-accordion-content.unboxed-layout {
    background: var(--bg-peach);
}

/* ---------------------------------------------------- */

/* THE NEW UNBOXED CONTENT LAYOUT */
.unboxed-layout {
    padding: 32px;
    display: flex;
    flex-direction: column;
}

/* Each block has white space and a bottom dashed divider */
.analysis-block {
    padding-bottom: 32px;
    margin-bottom: 32px;
    border-bottom: 1px dashed var(--gray-header);
}

.analysis-block:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

/* Micro-labels guiding the eye */
.block-label {
    font-weight: 800;
    font-size: 0.8rem;
    text-transform: uppercase;
    color: var(--ink-muted);
    margin-bottom: 12px;
}

/* Large text for Top Solution and Problem */
.block-large-text {
    font-size: 1.15rem;
    font-weight: 700;
    line-height: 1.5;
    color: var(--ink-black);
}

/* Normal text for the Context */
.block-normal-text {
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.6;
    color: var(--ink-black);
}

/* Detailed Breakdowns (Unboxed Lists) */
.details-section {
    margin-bottom: 32px;
}
.details-section:last-child {
    margin-bottom: 0;
}

.clean-list-wrapper {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-top: 16px;
}

.clean-list-item {
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

/* Tiny numbers on the left */
.clean-list-number {
    font-weight: 800;
    font-size: 0.8rem;
    background: transparent;
    color: var(--ink-black);
    border: var(--border-delicate);
    padding: 1px 5px;
    flex-shrink: 0;
    line-height: 1.2;
    margin-top: 2px;
}

/* Clean text structure */
.clean-list-body strong {
    display: block;
    font-weight: 700;
    color: var(--ink-black);
    margin-bottom: 2px;
}

.clean-list-body span {
    font-weight: 400;
    color: var(--ink-muted);
    line-height: 1.5;
}


/* --- 5. STAKEHOLDERS & IMPLEMENTATION (SECTION IV) --- */
.section-intro-text {
    color: var(--ink-muted);
    margin-bottom: 20px;
}

.bg-stakeholders .card-grid-equi {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
}

.bg-implementation .card-grid-equi {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.bg-implementation .standalone-card {
    background: #FFFFFF;
    border: var(--border-delicate);
    box-shadow: none;
    padding: 20px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.bg-implementation .card-header-inner {
    border-bottom: 1px solid var(--gray-header);
    padding-bottom: 10px;
    margin-bottom: 14px;
}

.bg-implementation .role-tag {
    font-weight: 700;
    text-transform: uppercase;
    background: transparent;
    color: var(--ink-black);
    border: var(--border-delicate);
    padding: 2px 8px;
    display: inline-block;
    font-size: 0.85rem;
}

.bg-implementation .standalone-card p {
    color: var(--ink-muted);
    font-weight: 400;
    line-height: 1.6;
    margin-bottom: 16px;
}

.bg-implementation .card-meta-box {
    background: #FFFFFF;
    border: var(--border-delicate);
    padding: 12px 14px;
    margin-top: auto;
    color: var(--ink-black);
    font-size: 0.9rem;
    font-weight: 400;
}

.bg-implementation .card-meta-box strong {
    font-weight: 700;
    color: var(--ink-black);
    display: inline;
}

.bg-stakeholders .standalone-card {
    background: var(--bg-subtle);
    border: var(--border-delicate);
    box-shadow: none;
    padding: 16px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.bg-stakeholders .card-header-inner {
    border-bottom: 1px solid var(--gray-header);
    padding-bottom: 8px;
    margin-bottom: 10px;
}

.bg-stakeholders .card-header-inner h4 {
    font-weight: 800;
    color: var(--ink-black);
}

.bg-stakeholders .role-tag {
    font-weight: 700;
    text-transform: uppercase;
    background: var(--bg-card);
    color: var(--ink-black);
    border: var(--border-delicate);
    padding: 1px 6px;
    display: inline-block;
    margin-bottom: 6px;
    font-size: 0.8rem;
}

.bg-stakeholders .standalone-card p {
    color: var(--ink-muted);
    line-height: 1.5;
    margin-bottom: 10px;
}

.bg-stakeholders .card-meta-box {
    background: var(--bg-card);
    border: var(--border-delicate);
    padding: 8px 10px;
    margin-top: 8px;
    color: var(--ink-black);
    font-size: 0.9rem;
}

/* --- 6. CAUSE & EFFECT (2-COLUMN GRID) --- */
.bg-cause-effect .structured-step-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.bg-cause-effect .structured-step-item {
    border: var(--border-delicate);
    padding: 10px 12px;
    background: var(--bg-card);
    display: flex;
    gap: 10px;
    align-items: flex-start;
    color: var(--ink-black);
}

.bg-cause-effect .structured-step-item.alert-item   { background: var(--diag-red); }
.bg-cause-effect .structured-step-item.yellow-item  { background: var(--diag-yellow); }
.bg-cause-effect .structured-step-item.success-item { background: var(--diag-green); }

.bg-cause-effect .structured-step-item:last-child {
    grid-column: 1 / -1;
}

/* --- 7. AUTHORITY DEFECT REGISTRY --- */
.defect-registry-subtitle {
    color: var(--ink-muted);
    margin-bottom: 20px;
}

.defect-group {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-bottom: 20px;
}

.defect-group-title {
    grid-column: 1 / -1;
    justify-self: start;
    font-weight: 700;
    text-transform: uppercase;
    background: var(--bg-dark);
    color: #FFFFFF;
    padding: 2px 8px;
    margin-bottom: 4px;
    display: inline-block;
    font-size: 0.9rem;
}

.defect-card {
    background: #FFFFFF;
    border: var(--border-delicate);
    box-shadow: none;
    padding: 14px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    justify-content: flex-start;
}

.defect-header-row {
    display: flex;
    align-items: center;
}

.defect-val {
    font-weight: 800;
    color: var(--ink-black);
}

.defect-desc {
    color: var(--ink-muted);
    line-height: 1.5;
    font-size: 0.9rem;
}

/* --- 8. FOOTER & SOURCES --- */
.footer-main-box ol {
    padding-left: 20px;
    line-height: 1.6;
}

.footer-main-box li {
    margin-bottom: 8px;
    color: var(--ink-muted);
}

/* ==========================================================================
   7. RESPONSIVE BREAKPOINTS (TABLET & MOBILE)
   ========================================================================== */

@media (max-width: 1024px) {
    .thesis-core {
        column-count: 2;
        column-gap: 24px;
    }

    .methodology-list,
    .bg-stakeholders .card-grid-equi,
    .defect-group {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    body {
        padding: 16px 10px;
    }
    
    .main-accordion-summary {
        padding: 16px 18px;
    }

    .main-accordion-title {
        font-size: 1.15rem;
    }
    
    .unboxed-layout {
        padding: 20px 14px;
    }

    .thesis-core {
        column-count: 1;
        column-gap: 0;
        column-rule: none;
        text-align: left;
    }

    .methodology-list,
    .bg-stakeholders .card-grid-equi,
    .bg-implementation .card-grid-equi,
    .bg-cause-effect .structured-step-list,
    .defect-group {
        grid-template-columns: 1fr;
    }
}