/* ==========================================================================
   CSS Variables (Variante A: Sage + Kohle + Leinen Editorial Palette)
   ========================================================================== */
:root {
    --brand: #5F8F73;
    --primary-color: #5F8F73;
    --primary-hover: #3D6B54;
    --secondary-color: #C4A574; /* Messing Akzent */
    --secondary-hover: #B0895A;
    --cta: #3D6B54;
    --cta-text: #ffffff;
    --bg-color: #F6F3EE; /* Warmes Leinen */
    --card-bg: #ffffff;
    --text-color: #1C1F1D; /* Kohle */
    --text-light: #5C6560;
    --border-color: #E2DDD4;
    --radius: 12px;
    --shadow: 0 4px 15px rgba(28, 31, 29, 0.05);
}

/* ==========================================================================
   Accessibility & Usability (WCAG 2.1 AA Compliant)
   ========================================================================== */
.skip-link {
    position: absolute;
    top: -100px;
    left: 20px;
    background: #3D6B54;
    color: #ffffff;
    padding: 10px 18px;
    border-radius: 6px;
    z-index: 100000;
    font-weight: 600;
    text-decoration: none;
    transition: top 0.2s ease;
}
.skip-link:focus {
    top: 15px;
    outline: 3px solid #5F8F73;
}

*:focus-visible {
    outline: 3px solid #3D6B54 !important;
    outline-offset: 2px !important;
}

@media (prefers-reduced-motion: reduce) {
    *, ::before, ::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Dark Mode Theme (Sage + Kohle + Leinen Dark Palette) */
html[data-theme="dark"] {
    --brand: #7FAE93;
    --primary-color: #7FAE93;
    --primary-hover: #4E8A6A;
    --secondary-color: #C4A574;
    --secondary-hover: #B0895A;
    --cta: #4E8A6A;
    --cta-text: #F4F7F4;
    --bg-color: #121614;
    --card-bg: #1A201C;
    --text-color: #E8EDE8;
    --text-light: #A8B3AC;
    --border-color: #2A332E;
    --shadow: 0 4px 20px rgba(0,0,0,0.4);
}

html[data-theme="dark"] h1,
html[data-theme="dark"] h2,
html[data-theme="dark"] h3,
html[data-theme="dark"] h4 {
    color: #F4F7F4;
}

html[data-theme="dark"] header,
html[data-theme="dark"] .site-header {
    background-color: #161C19 !important;
    border-bottom: 1px solid #2A332E !important;
}

html[data-theme="dark"] .term-detail-card,
html[data-theme="dark"] .term-list-item,
html[data-theme="dark"] .term-card {
    background-color: #1A201C;
    border-color: #2A332E;
}

html[data-theme="dark"] .term-hero-image {
    background: transparent !important;
    border-color: transparent !important;
}

html[data-theme="dark"] .term-hero-image img,
html[data-theme="dark"] .term-icon-wrapper img {
    background: transparent !important;
    border: none !important;
    filter: drop-shadow(0 4px 12px rgba(0,0,0,0.4));
}

html[data-theme="dark"] .term-tooltip {
    background: #1A201C;
    border-color: #2A332E;
    color: #E8EDE8;
}

html[data-theme="dark"] .term-tooltip .tt-teaser {
    color: #A8B3AC;
}

html[data-theme="dark"] input,
html[data-theme="dark"] textarea,
html[data-theme="dark"] select {
    background-color: #121614 !important;
    color: #F4F7F4 !important;
    border-color: #2A332E !important;
}

html[data-theme="dark"] select option {
    background-color: #1A201C !important;
    color: #F4F7F4 !important;
}

html[data-theme="dark"] input::placeholder,
html[data-theme="dark"] textarea::placeholder {
    color: #A8B3AC !important;
}

html[data-theme="dark"] label {
    color: #F4F7F4 !important;
}

html[data-theme="dark"] .b2b-form-card,
html[data-theme="dark"] .partner-box,
html[data-theme="dark"] .inquiry-box,
html[data-theme="dark"] div[style*="background: #fafdfb"],
html[data-theme="dark"] div[style*="background: var(--bg-color)"] {
    background-color: #1A201C !important;
    border-color: #2A332E !important;
    color: #E8EDE8 !important;
}


.theme-toggle-btn {
    background: none;
    border: 1px solid var(--border-color);
    border-radius: 50%;
    width: 36px;
    height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 16px;
    color: var(--text-color);
    transition: all 0.2s ease;
}

.theme-toggle-btn:hover {
    background: rgba(0,0,0,0.05);
    transform: scale(1.05);
}

html[data-theme="dark"] .theme-toggle-btn:hover {
    background: rgba(255,255,255,0.1);
}


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

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--secondary-hover);
}

h1, h2, h3, h4 {
    font-weight: 500;
    margin-bottom: 15px;
    color: #333;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.site-header {
    background-color: var(--card-bg);
    box-shadow: 0 2px 10px rgba(0,0,0,0.03);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-color);
    letter-spacing: 0.5px;
}

.logo .logo-highlight {
    color: var(--primary-color);
}

.logo .logo-sub {
    font-size: 14px;
    font-weight: 300;
    color: var(--secondary-color);
    margin-left: 5px;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.main-nav ul {
    list-style: none;
    display: flex;
    gap: 20px;
}

.main-nav a {
    color: var(--text-color);
    font-weight: 500;
    font-size: 16px;
    padding: 5px 10px;
    border-radius: var(--radius);
}

.main-nav a:hover {
    background-color: var(--secondary-color);
    color: #fff;
}

/* ==========================================================================
   Main Content Area
   ========================================================================== */
.site-content {
    flex: 1;
    padding: 50px 0;
}

.page-title {
    text-align: center;
    font-size: 36px;
    margin-bottom: 10px;
}

.page-subtitle {
    text-align: center;
    color: var(--text-light);
    font-size: 18px;
    margin-bottom: 40px;
}

/* ==========================================================================
   Alphabet List (A-Z)
   ========================================================================== */
.alphabet-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 20px;
    margin-bottom: 50px;
}

.letter-card {
    background-color: var(--card-bg);
    border-radius: var(--radius);
    padding: 20px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 2px solid transparent;
}

.letter-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.08);
    border-color: var(--primary-color);
}

.letter-card .letter {
    display: block;
    font-size: 42px;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.letter-card .count {
    display: inline-block;
    background-color: var(--secondary-color);
    color: #fff;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
}

/* ==========================================================================
   Term List
   ========================================================================== */
.term-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 25px;
    margin-bottom: 40px;
}

.term-list-item {
    background-color: var(--card-bg);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    position: relative;
    border-top: 4px solid var(--primary-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    height: 100%;
}

.term-list-item:hover {
    transform: translateY(-5px);
    border-top-color: var(--secondary-color);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.term-list-item:hover .card-img-hover {
    transform: scale(1.05);
}

.term-title {
    font-size: 20px;
    font-weight: 500;
    color: var(--text-color);
}

.btn-read {
    background-color: var(--secondary-color);
    color: #fff;
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 14px;
}
.btn-read:hover,
.term-list-item:hover .btn-read {
    background-color: var(--primary-color);
    color: #fff;
}

/* ==========================================================================
   Term Detail Page
   ========================================================================== */
.term-detail-card {
    background-color: var(--card-bg);
    border-radius: var(--radius);
    padding: 40px;
    box-shadow: var(--shadow);
    margin-bottom: 30px;
}

.term-detail-title {
    font-size: 32px;
    color: var(--primary-hover);
    margin-bottom: 5px;
}

.synonym-list {
    margin-bottom: 30px;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.synonym-tag {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    color: var(--text-light);
    padding: 5px 12px;
    border-radius: 15px;
    font-size: 13px;
}

.term-description {
    font-size: 16px;
    line-height: 1.8;
}

.term-description p {
    margin-bottom: 15px;
}

.term-description h2 {
    margin-top: 30px;
    margin-bottom: 15px;
    font-size: 24px;
    color: var(--text-color);
}

.term-description h3 {
    margin-top: 25px;
    margin-bottom: 10px;
    font-size: 20px;
}

.term-description ul,
.term-description ol {
    padding-left: 25px;
    margin-bottom: 20px;
    margin-top: 10px;
}

.term-description li {
    margin-bottom: 8px;
}

.term-description h2 {
    font-size: 22px;
    font-weight: 700;
    border-left: 3.5px solid var(--brand);
    padding-left: 14px;
    margin-top: 36px;
    margin-bottom: 16px;
    color: var(--text-color);
    letter-spacing: -0.01em;
}

/* Interne Links (Unterstrich ohne Capsule) */
.term-description .auto-link, a.term {
    color: inherit;
    text-decoration: underline;
    text-decoration-color: color-mix(in srgb, var(--brand) 45%, transparent);
    text-underline-offset: 3px;
    background: none !important;
    padding: 0;
    border-radius: 0;
    font-weight: 600;
}
.term-description .auto-link:hover, a.term:hover {
    color: var(--brand) !important;
    text-decoration-color: var(--brand) !important;
}

/* SVG Icon-Container (currentColor, 1.75px stroke) */
.term-ico {
    width: 48px;
    height: 48px;
    display: grid;
    place-items: center;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--brand);
    background: var(--card-bg);
    flex-shrink: 0;
}
.term-ico.lg {
    width: 68px;
    height: 68px;
    border-radius: 14px;
}
.term-ico svg {
    width: 32px;
    height: 32px;
    stroke: currentColor;
    stroke-width: 1.75;
    stroke-linecap: round;
    stroke-linejoin: round;
    fill: none;
}
.term-ico.lg svg {
    width: 42px;
    height: 42px;
}
[data-theme="dark"] .term-ico {
    color: #C5D0C8;
    background: #1A201C;
    border-color: #2A332E;
}

/* A – Antwortkasten */
.answer {
    border-left: 3.5px solid var(--brand);
    padding: 16px 20px;
    background: color-mix(in srgb, var(--brand) 8%, var(--card-bg));
    border-radius: 0 12px 12px 0;
    font-size: 1.05rem;
    line-height: 1.55;
    margin-bottom: 24px;
    color: var(--text-color);
}

/* B – Faktenleiste <dl class="facts"> */
.facts {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
    background: var(--border-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    margin: 1.25rem 0 1.75rem;
}
.facts > div {
    background: var(--card-bg);
    padding: 12px 14px;
}
.facts dt {
    font-size: 11px;
    letter-spacing: .06em;
    text-transform: uppercase;
    color: var(--text-light);
    font-weight: 700;
}
.facts dd {
    margin: 4px 0 0;
    font-weight: 600;
    color: var(--text-color);
    font-size: 13.5px;
}
@media (max-width: 700px) {
    .facts { grid-template-columns: 1fr 1fr; }
}

/* C – Merksatz / Werkstatt */
.note {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 14px 18px;
    color: var(--text-color);
    margin: 24px 0;
    font-size: 14.5px;
    line-height: 1.5;
}
.note::before {
    content: "Aus der Werkstatt";
    display: block;
    font-size: 11px;
    letter-spacing: .08em;
    text-transform: uppercase;
    font-weight: 700;
    color: var(--brand);
    margin-bottom: 6px;
}

/* ==========================================================================
   MUSTERBUCH (FABRIC PATTERN BOOK) HOMEPAGE STYLES
   ========================================================================== */
.book {
    display: grid;
    grid-template-columns: 4.5rem 1fr;
    max-width: 1080px;
    margin: 2rem auto 4rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.04);
    overflow: hidden;
}

/* Register (Selvedge / Webkante) */
.selvedge {
    display: flex;
    flex-direction: column;
    gap: 3px;
    border-right: 3px double var(--border-color);
    padding: 1.75rem 0.5rem;
    background: color-mix(in srgb, var(--bg-color) 80%, var(--card-bg));
    align-items: center;
}
.selvedge a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-muted);
    text-decoration: none;
    transition: all 0.15s ease;
    cursor: pointer;
}
.selvedge a:hover {
    color: var(--brand);
    background: color-mix(in srgb, var(--brand) 12%, transparent);
}
.selvedge a[aria-current="true"] {
    color: #ffffff;
    background: var(--cta);
    font-weight: 800;
    box-shadow: 0 2px 6px color-mix(in srgb, var(--cta) 35%, transparent);
}

/* Stoffbahn (Bolt Layout) */
.bolt {
    padding: 3rem 3.5rem;
    display: grid;
    grid-template-columns: 1fr 180px;
    gap: 2.5rem;
    align-items: start;
    position: relative;
}
.bolt-content {
    display: flex;
    flex-direction: column;
}
.bolt .kicker {
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    font-weight: 800;
    color: var(--brand);
    margin-bottom: 6px;
}
.bolt h1 {
    font-size: 52px;
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -0.03em;
    margin: 0 0 8px 0;
}
.bolt h1 a {
    color: var(--text-color);
    text-decoration: none;
    transition: color 0.2s ease;
}
.bolt h1 a:hover {
    color: var(--brand);
}
.bolt .also {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 20px;
    font-weight: 500;
}
.bolt .lead {
    font-size: 1.18rem;
    line-height: 1.5;
    color: var(--text-color);
    max-width: 32rem;
    margin-bottom: 2rem;
    font-weight: 400;
}

/* Right side vector cut artwork */
.cut {
    width: 170px;
    height: 170px;
    display: grid;
    place-items: center;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    margin-top: 1rem;
}
.cut svg {
    width: 100%;
    height: 100%;
    stroke: var(--brand);
    stroke-width: 1.5;
    fill: none;
}

/* Facts Ticket Strip */
.ticket {
    display: flex;
    gap: 2.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
    grid-column: 1 / -1;
}
.ticket div {
    display: flex;
    flex-direction: column;
}
.ticket dt {
    font-size: 11px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-muted);
    font-weight: 700;
    margin-bottom: 3px;
}
.ticket dd {
    font-size: 14.5px;
    font-weight: 700;
    color: var(--text-color);
    margin: 0;
    font-feature-settings: "tnum";
    font-variant-numeric: tabular-nums;
}

/* Footer note at bottom of Musterbuch */
.book-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1.5rem;
    margin-top: 1.5rem;
    border-top: 1px solid var(--border-color);
    font-size: 13px;
    color: var(--text-muted);
    grid-column: 1 / -1;
}

/* Responsive Musterbuch (Mobile) */
@media (max-width: 768px) {
    .book {
        grid-template-columns: 1fr;
        border-radius: 12px;
        margin: 1rem 0;
    }
    .selvedge {
        flex-direction: row;
        border-right: none;
        border-bottom: 3px double var(--border-color);
        max-height: none;
        overflow-x: auto;
        padding: 0.75rem 1rem;
        justify-content: flex-start;
        gap: 6px;
    }
    .selvedge a {
        flex-shrink: 0;
        width: 36px;
        height: 36px;
    }
    .bolt {
        grid-template-columns: 1fr;
        padding: 2rem 1.5rem;
    }
    .bolt h1 {
        font-size: 38px;
    }
    .cut {
        width: 120px;
        height: 120px;
        margin: 1rem 0;
    }
}

/* Faktenleiste / Technical Spec Grid */
.spec-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 12px;
    margin: 24px 0 28px;
}

.spec-tile {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    padding: 12px 14px;
    border-radius: 10px;
    font-size: 13px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.spec-tile-label {
    font-size: 11px;
    text-transform: uppercase;
    font-weight: 700;
    color: var(--text-light);
    letter-spacing: 0.04em;
}

.spec-tile-val {
    font-weight: 600;
    color: var(--text-color);
}

/* Tooltip for Auto-Links — Rich Card Style */
.term-tooltip {
    position: absolute;
    z-index: 9999;
    background: #ffffff;
    border: 1px solid rgba(0,0,0,0.08);
    box-shadow: 0 12px 40px rgba(0,0,0,0.15), 0 2px 8px rgba(0,0,0,0.08);
    border-radius: 12px;
    width: 340px;
    display: none;
    pointer-events: none;
    overflow: hidden;
    font-size: 13.5px;
    color: var(--text-color);
    line-height: 1.5;
}

.term-tooltip .tt-img {
    width: 100%;
    height: 120px;
    background: linear-gradient(135deg, #f0f4f8 0%, #e8ecf0 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    border-bottom: 1px solid rgba(0,0,0,0.06);
}

.term-tooltip .tt-img img {
    max-height: 110px;
    max-width: 100%;
    object-fit: contain;
    padding: 8px;
}

.term-tooltip .tt-img .tt-no-img {
    font-size: 32px;
    color: var(--primary-color);
    opacity: 0.4;
}

.term-tooltip .tt-body {
    padding: 14px 16px 16px;
}

.term-tooltip strong {
    color: var(--primary-color);
    font-size: 15px;
    margin-bottom: 6px;
    display: block;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.term-tooltip .tt-teaser {
    color: #555;
    font-size: 13px;
    line-height: 1.55;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.term-tooltip .tt-hint {
    margin-top: 10px;
    font-size: 11.5px;
    color: var(--primary-color);
    font-weight: 600;
    opacity: 0.8;
}

.back-link {
    display: inline-block;
    margin-bottom: 20px;
    font-weight: 500;
    color: var(--text-light);
}
.back-link::before {
    content: '← ';
}
.back-link:hover {
    color: var(--primary-color);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
    background-color: var(--card-bg);
    padding: 30px 0;
    text-align: center;
    color: var(--text-light);
    font-size: 14px;
    border-top: 1px solid var(--border-color);
    margin-top: auto;
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 768px) {
    .header-container {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
    .alphabet-grid {
        grid-template-columns: repeat(auto-fill, minmax(75px, 1fr));
        gap: 6px;
    }
    .term-list-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
    .btn-read {
        width: 100%;
        text-align: center;
    }
    .term-detail-layout {
        flex-direction: column !important;
    }
    .term-main-content, .term-sidebar {
        width: 100% !important;
    }
    .prev-next-container {
        flex-direction: column;
        gap: 10px;
    }
    .prev-next-container a {
        width: 100%;
        text-align: center;
        justify-content: center;
    }
    .media-gallery-grid {
        grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)) !important;
        gap: 10px !important;
    }
    input, select, textarea {
        font-size: 16px !important;
    }
}

/* B2B Sidebar Card (Light & Dark Mode) */
.b2b-sidebar-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 28px 24px;
    border-radius: 16px;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    gap: 16px;
    text-align: center;
    margin-bottom: 25px;
    transition: background-color 0.2s ease, border-color 0.2s ease;
}
.b2b-sidebar-card .b2b-icon-wrap {
    width: 54px;
    height: 54px;
    border-radius: 50%;
    background: color-mix(in srgb, var(--brand) 15%, transparent);
    color: var(--brand);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    font-size: 22px;
}
.b2b-sidebar-card h3 {
    font-size: 19px;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 8px;
    letter-spacing: -0.01em;
}
.b2b-sidebar-card p {
    color: var(--text-muted);
    font-size: 13.5px;
    line-height: 1.6;
    margin: 0;
}
.b2b-sidebar-card .btn-open-b2b-modal {
    width: 100%;
    padding: 13px 20px;
    background: var(--cta);
    color: var(--cta-text);
    border: none;
    border-radius: 30px;
    font-weight: 700;
    font-size: 14.5px;
    cursor: pointer;
    box-shadow: 0 4px 12px color-mix(in srgb, var(--cta) 30%, transparent);
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}
.b2b-sidebar-card .btn-open-b2b-modal:hover {
    background: color-mix(in srgb, var(--cta) 85%, #000);
    transform: translateY(-1px);
}