/* =====================================================================
   IT-Forum Rhein-Neckar — main.css
   Design Tokens, Base, Layout, Components, Responsive
   ===================================================================== */

/* --- Design Tokens ------------------------------------------------- */
:root {
    --itf-lime:            #1DFB14;
    --itf-lime-600:        #14C20E;
    --itf-mint:            #CDFCC8;
    --itf-deep:            #243B53;
    --itf-deep-900:        #182838;
    --itf-deep-700:        #2E4A66;
    --itf-deep-500:        #4B6A8A;
    --itf-alice:           #E8F1F2;
    --itf-alice-deep:      #D6E4E7;
    --itf-strawberry:      #F71735;
    --itf-white:           #FFFFFF;
    --itf-paper:           #FAFBFC;
    --itf-fog:             #F2F5F7;
    --itf-line:            #E1E7EC;
    --itf-line-strong:     #C7D2DB;
    --itf-mute:            #6B7C8E;
    --itf-mute-dark:       #9DB1C5;
    --itf-black:           #0B141C;

    --fg-1:  var(--itf-deep);
    --fg-2:  var(--itf-mute);
    --fg-3:  #93A4B7;

    --border:        var(--itf-line);
    --border-strong: var(--itf-line-strong);

    --font-sans: 'IBM Plex Sans', system-ui, -apple-system, sans-serif;
    --font-cond: 'IBM Plex Sans Condensed', 'IBM Plex Sans', system-ui, sans-serif;
    --font-mono: 'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

    --fs-hero:    clamp(28px, 3vw, 44px);
    --fs-h1:      clamp(34px, 3.6vw, 52px);
    --fs-h2:      clamp(26px, 2.6vw, 38px);
    --fs-h3:      22px;
    --fs-h4:      18px;
    --fs-lead:    20px;
    --fs-body:    17px;
    --fs-small:   15px;

    --container:  1280px;
    --gutter:     clamp(20px, 4vw, 48px);

    --r-sm:   8px;
    --r-md:   12px;
    --r-lg:   20px;

    --shadow-1: 0 1px 2px rgba(36,59,83,0.06), 0 1px 1px rgba(36,59,83,0.04);
    --shadow-2: 0 6px 18px rgba(36,59,83,0.08), 0 2px 4px rgba(36,59,83,0.04);
    --shadow-3: 0 22px 60px -20px rgba(36,59,83,0.22), 0 8px 18px -10px rgba(36,59,83,0.10);

    --ease-out:   cubic-bezier(0.16, 1, 0.3, 1);
    --ease-inout: cubic-bezier(0.65, 0, 0.35, 1);
    --t-fast:     140ms;
    --t-med:      260ms;
    --t-slow:     520ms;
}

/* --- Reset / Base -------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
    font-family: var(--font-sans);
    font-size: var(--fs-body);
    line-height: 1.6;
    color: var(--fg-1);
    background: #fff;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
img { display: block; max-width: 100%; height: auto; }
figure { margin: 0; }

/* --- Container ----------------------------------------------------- */
.container { max-width: var(--container); margin: 0 auto; padding: 0 var(--gutter); }

/* --- Section ------------------------------------------------------- */
.section { padding: clamp(72px, 9vw, 120px) 0; position: relative; }
.section--alice { background: var(--itf-alice); }
.section--deep  { background: var(--itf-deep); color: #fff; }
.section--deep .eyebrow { color: var(--itf-lime); }
.section--deep .mute { color: var(--itf-mute-dark); }

/* --- Typography ---------------------------------------------------- */
.h-hero { font: 700 var(--fs-hero)/1.12 var(--font-sans); letter-spacing: -0.02em; color: var(--itf-deep); margin: 0; }
.h-1    { font: 600 var(--fs-h1)/1.1 var(--font-sans); letter-spacing: -0.02em; color: var(--itf-deep); margin: 0; }
.h-2    { font: 600 var(--fs-h2)/1.15 var(--font-sans); letter-spacing: -0.02em; color: var(--itf-deep); margin: 0; }
.h-3    { font: 600 var(--fs-h3)/1.25 var(--font-sans); letter-spacing: -0.01em; color: var(--itf-deep); margin: 0; }
.h-4    { font: 600 var(--fs-h4)/1.3 var(--font-sans); color: var(--itf-deep); margin: 0; }

.section--deep .h-hero,
.section--deep .h-1,
.section--deep .h-2,
.section--deep .h-3,
.section--deep .h-4 { color: #fff; }

.lead { font: 400 var(--fs-lead)/1.6 var(--font-sans); color: var(--itf-deep); margin: 0; }
.body { font: 400 var(--fs-body)/1.6 var(--font-sans); color: var(--itf-deep); margin: 0; }
.mute { color: var(--itf-mute); }
.small { font-size: 14px; line-height: 1.5; }

/* --- Eyebrow ------------------------------------------------------- */
.eyebrow {
    font: 600 12px/1 var(--font-sans);
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--itf-deep);
    display: inline-flex;
    align-items: center;
    gap: 10px;
}
.eyebrow::before {
    content: "";
    width: 24px; height: 1px;
    background: var(--itf-lime);
}

/* --- Buttons ------------------------------------------------------- */
.btn {
    display: inline-flex; align-items: center; gap: 10px;
    cursor: pointer; border: none;
    font: 600 15px/1 var(--font-sans);
    letter-spacing: 0.01em;
    text-decoration: none;
    white-space: nowrap;
    transition: transform var(--t-fast) var(--ease-out),
                box-shadow var(--t-fast) var(--ease-out),
                background-color var(--t-fast),
                color var(--t-fast),
                border-color var(--t-fast);
}
.btn:active { transform: translateY(1px) scale(0.99); }
.btn .arr { display: inline-block; width: 14px; height: 14px; transition: transform var(--t-med) var(--ease-out); }
.btn:hover .arr { transform: translateX(3px); }

.btn--primary {
    background: var(--itf-lime); color: var(--itf-deep);
    padding: 15px 24px; border-radius: 999px;
    box-shadow: 0 6px 18px rgba(29,251,20,0.22);
}
.btn--primary:hover {
    box-shadow: 0 10px 28px rgba(29,251,20,0.30), 0 0 0 6px rgba(29,251,20,0.10);
    transform: translateY(-1px);
}

.btn--secondary {
    background: var(--itf-deep); color: #fff;
    padding: 14px 23px; border-radius: 999px;
    border: 1px solid var(--itf-deep);
}
.btn--secondary:hover { background: var(--itf-deep-900); }

.btn--ghost {
    background: #fff; color: var(--itf-deep);
    padding: 14px 22px; border-radius: 999px;
    border: 1px solid var(--border-strong);
}
.btn--ghost:hover { border-color: var(--itf-deep); background: var(--itf-alice); }

.section--deep .btn--secondary { background: #fff; color: var(--itf-deep); border-color: #fff; }
.section--deep .btn--secondary:hover { background: var(--itf-alice); }
.section--deep .btn--ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,0.30); }
.section--deep .btn--ghost:hover { background: rgba(255,255,255,0.06); border-color: #fff; }

.link-arrow {
    display: inline-flex; align-items: center; gap: 8px;
    font: 600 14px/1 var(--font-sans); color: var(--itf-deep);
    padding-bottom: 6px; border-bottom: 2px solid var(--itf-alice);
    transition: gap var(--t-med) var(--ease-out);
}
.link-arrow:hover { gap: 12px; }
.section--deep .link-arrow { color: #fff; }

/* --- Cards --------------------------------------------------------- */
.card-base {
    position: relative; background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--r-md);
    transition: box-shadow var(--t-med) var(--ease-out), transform var(--t-med) var(--ease-out);
    overflow: hidden;
}
.card-base:hover { box-shadow: var(--shadow-3); transform: translateY(-4px); }
.card-base .corner-line {
    position: absolute; top: 0; left: 0;
    height: 3px; background: var(--itf-lime);
    width: 0; transition: width 380ms var(--ease-out);
}
.card-base:hover .corner-line { width: 64%; }
.card-base .hover-tri {
    position: absolute; top: 14px; right: 14px;
    width: 18px; opacity: 0;
    transition: opacity var(--t-med);
}
.card-base:hover .hover-tri { opacity: 1; }
.card-base .hover-tri--bottom { top: auto; bottom: 14px; }

/* --- Chip / Tag ---------------------------------------------------- */
.chip {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 8px 14px; border-radius: 999px;
    background: #fff; border: 1px solid var(--border);
    font: 500 13px/1 var(--font-sans); color: var(--itf-deep);
    cursor: pointer; transition: 180ms var(--ease-out);
}
.chip:hover { border-color: var(--itf-deep); background: var(--itf-alice); }
.chip--active { background: var(--itf-deep); color: #fff; border-color: var(--itf-deep); }
.chip .dot { width: 6px; height: 6px; border-radius: 999px; background: var(--itf-lime); }

.chip-cat {
    display: inline-block;
    font: 600 11px/1 var(--font-sans);
    letter-spacing: 0.12em; text-transform: uppercase;
    padding: 6px 10px; border-radius: 999px;
    background: var(--itf-alice); color: var(--itf-deep);
}

.event-type-badge {
    display: inline-flex; align-items: center; gap: 6px;
    font: 700 10px/1 var(--font-sans);
    letter-spacing: 0.14em; text-transform: uppercase;
    padding: 5px 9px; border-radius: 4px;
}
.event-type-badge--internal {
    background: rgba(29,251,20,0.16); color: var(--itf-deep);
    border: 1px solid rgba(29,251,20,0.40);
}
.event-type-badge--external {
    background: rgba(0,15,49,0.06); color: var(--itf-mute);
    border: 1px solid rgba(0,15,49,0.12);
}

/* --- Decorative ---------------------------------------------------- */
.tri-stamp {
    display: inline-block; width: 14px; height: 12px;
    background: url('../img/triangle.svg') center/contain no-repeat;
    vertical-align: -2px;
}
.diagonal-line {
    height: 1px;
    background: linear-gradient(90deg, transparent 0, var(--itf-lime) 20%, var(--itf-lime) 80%, transparent 100%);
    opacity: 0.4;
}
.num-rule {
    font: 600 13px/1 var(--font-mono);
    color: var(--itf-mute);
    display: flex; align-items: center; gap: 10px;
}
.num-rule::before {
    content: ""; width: 22px; height: 1px;
    background: var(--itf-lime);
}

/* --- Grids --------------------------------------------------------- */
.grid-2col {
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 80px; align-items: start;
}
.grid-2col--wide { grid-template-columns: 1fr 1.4fr; }
.grid-2col--map  { grid-template-columns: 1fr 1.3fr; align-items: center; }
.grid-2col--bitmi { grid-template-columns: 1fr 1.1fr; align-items: center; }
.grid-2col--cta  { grid-template-columns: 1.4fr 1fr; align-items: center; gap: 64px; }
.grid-2col--text-image { grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.grid-2col--reversed { direction: rtl; }
.grid-2col--reversed > * { direction: ltr; }

.grid-2col-header {
    display: grid; grid-template-columns: 1fr auto;
    align-items: end; gap: 32px;
}

.benefits-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.benefits-grid .card-base {
    padding: 32px 28px 36px; min-height: 280px;
    display: flex; flex-direction: column; justify-content: space-between;
}

.topics-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.events-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.members-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.members-grid--archive { grid-template-columns: repeat(4, 1fr); gap: 18px; }
.events-grid--archive { grid-template-columns: repeat(3, 1fr); gap: 20px; }

/* Automatische Silbentrennung für lange deutsche Event-Titel */
.event-card h3,
.event-card .h-3 {
    hyphens: auto;
    -webkit-hyphens: auto;
    -ms-hyphens: auto;
    overflow-wrap: break-word;
    word-break: break-word;
    -webkit-hyphenate-limit-before: 3;
    -webkit-hyphenate-limit-after: 3;
    hyphenate-limit-chars: 6 3 3;
}
@media (max-width: 1024px) {
    .events-grid--archive { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
    .events-grid--archive { grid-template-columns: 1fr; }
}

/* --- Archive pagination -------------------------------------------- */
.archive-pagination .page-numbers {
    display: inline-flex; align-items: center; justify-content: center;
    min-width: 36px; height: 36px; padding: 0 10px;
    border-radius: var(--r-sm); font-size: 14px; font-weight: 600;
    color: var(--itf-deep); text-decoration: none;
    border: 1px solid var(--itf-line); transition: all 0.2s;
}
.archive-pagination .page-numbers:hover { border-color: var(--itf-deep); background: var(--itf-fog); }
.archive-pagination .page-numbers.current { background: var(--itf-deep); color: #fff; border-color: var(--itf-deep); }

/* --- Header -------------------------------------------------------- */
.site-header {
    position: sticky; top: 0; z-index: 50;
    background: rgba(255,255,255,0.86);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(36,59,83,0.08);
}
.site-header__inner {
    display: flex; align-items: center;
    justify-content: space-between;
    height: 76px;
}
.site-header__logo img { height: 53px; width: auto; display: block; }
.site-header__nav { display: flex; align-items: center; gap: 32px; list-style: none; margin: 0; padding: 0; }
.site-header__nav a,
.site-header__nav .menu-item a {
    font: 500 14px/1 var(--font-sans); color: var(--itf-deep);
    position: relative; padding: 6px 0; white-space: nowrap;
    text-decoration: none;
}
.site-header__nav a::after,
.site-header__nav .menu-item a::after {
    content: ""; position: absolute; bottom: 0; left: 0;
    height: 2px; width: 0; background: var(--itf-lime);
    transition: width var(--t-med) var(--ease-out);
}
.site-header__nav a:hover::after,
.site-header__nav .menu-item a:hover::after { width: 100%; }
.site-header__nav .current-menu-item a::after { width: 100%; }
.site-header__nav .menu-item.is-active a::after { width: 100%; }
.site-header__nav .menu-item { list-style: none; }
.site-header__cta { display: inline-flex; }

/* --- Burger + Mobile Drawer ---------------------------------------- */
.burger {
    display: none;
    width: 44px; height: 44px;
    background: var(--itf-deep);
    border: 1px solid var(--itf-deep);
    border-radius: 999px; padding: 0;
    position: relative;
    align-items: center; justify-content: center;
    z-index: 60;
    transition: background-color var(--t-fast);
}
.burger:hover { background: var(--itf-deep-900); }
.burger span {
    position: absolute; left: 12px; right: 12px;
    height: 2px; background: #fff; border-radius: 2px;
    transition: transform var(--t-fast) var(--ease-out), opacity var(--t-fast), top var(--t-fast) var(--ease-out);
}
.burger span:nth-child(1) { top: 15px; }
.burger span:nth-child(2) { top: 21px; }
.burger span:nth-child(3) { top: 27px; }
.burger--open { background: var(--itf-deep-900); }
.burger--open span { background: var(--itf-lime); }
.burger--open span:nth-child(1) { top: 21px; transform: rotate(45deg); }
.burger--open span:nth-child(2) { opacity: 0; }
.burger--open span:nth-child(3) { top: 21px; transform: rotate(-45deg); }

.mobile-drawer {
    position: fixed; top: 76px; right: 0; bottom: 0; left: 0;
    background: var(--itf-deep); color: #fff; z-index: 55;
    transform: translateY(-100%); opacity: 0; pointer-events: none;
    transition: transform var(--t-med) var(--ease-out), opacity var(--t-fast);
    display: flex; flex-direction: column; overflow-y: auto;
}
.mobile-drawer--open { transform: translateY(0); opacity: 1; pointer-events: auto; }
.mobile-drawer__nav {
    display: flex; flex-direction: column;
    padding: 12px 20px 8px;
    border-bottom: 1px solid rgba(255,255,255,0.10);
}
.mobile-drawer__nav a {
    display: flex; align-items: center; justify-content: space-between;
    padding: 20px 4px;
    font: 600 22px/1 var(--font-sans); color: #fff;
    letter-spacing: -0.01em;
    border-bottom: 1px solid rgba(255,255,255,0.10);
}
.mobile-drawer__nav a:last-child { border-bottom: 0; }
.mobile-drawer__nav a:hover { color: var(--itf-lime); }
.mobile-drawer__cta { padding: 20px; }
.mobile-drawer__footer {
    margin-top: auto; padding: 24px 20px;
    font: 500 12px/1.4 var(--font-sans);
    color: rgba(255,255,255,0.6);
    border-top: 1px solid rgba(255,255,255,0.10);
    background: var(--itf-deep-900);
}
.mobile-drawer__footer > div:first-child { font-weight: 600; color: #fff; }

.mobile-drawer .btn--primary { background: var(--itf-lime); color: var(--itf-deep); }
.mobile-drawer .btn--secondary { background: #fff; color: var(--itf-deep); border-color: #fff; }
.mobile-drawer .btn--ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,0.30); }

/* --- Hero ---------------------------------------------------------- */
.hero {
    position: relative;
    padding: clamp(48px, 7vw, 96px) 0 clamp(64px, 8vw, 120px);
    overflow: hidden;
}
.hero-grid-2col {
    display: grid; grid-template-columns: 1.15fr 1fr;
    gap: 64px; align-items: center; position: relative;
}
.hero-copy { position: relative; z-index: 2; }
.hero-stage {
    position: relative; width: 100%;
    aspect-ratio: 1 / 1; max-width: 540px; margin-left: auto;
}
.hero-grid-svg {
    position: absolute; inset: 0; width: 100%; height: 100%;
    z-index: 0; pointer-events: none;
}

.hero-tri-wrap {
    position: absolute; inset: 0;
    display: flex; align-items: center; justify-content: center;
    pointer-events: none; z-index: 1;
    -webkit-mask-image: linear-gradient(95deg, transparent 0%, rgba(0,0,0,0.4) 12%, #000 32%, #000 92%, rgba(0,0,0,0.55) 100%);
            mask-image: linear-gradient(95deg, transparent 0%, rgba(0,0,0,0.4) 12%, #000 32%, #000 92%, rgba(0,0,0,0.55) 100%);
}
.hero-tri {
    height: 86%; width: auto;
    translate: -6% 0;
    filter: drop-shadow(0 30px 60px rgba(36,59,83,0.10));
    transform-origin: 50% 50%;
    will-change: rotate, scale, opacity;
}

.hero-stat__number {
    font: 600 44px/1 var(--font-cond), 'IBM Plex Sans', sans-serif;
    letter-spacing: -0.02em; color: var(--itf-deep);
}
.hero-stat__label {
    margin-top: 6px; font-size: 12px; font-weight: 600;
    letter-spacing: 0.12em; text-transform: uppercase;
    color: var(--itf-mute);
}

.hero-chip {
    position: absolute; z-index: 3;
    display: inline-flex; align-items: center; gap: 8px;
    padding: 10px 14px; border-radius: 999px;
    font: 600 13px/1 var(--font-sans); white-space: nowrap;
}
.hero-chip--white { background: #fff; border: 1px solid var(--border); color: var(--itf-deep); box-shadow: var(--shadow-2); }
.hero-chip--deep  { background: var(--itf-deep); color: #fff; box-shadow: var(--shadow-2); }
.hero-chip--lime  {
    background: var(--itf-lime); color: var(--itf-deep);
    padding: 8px 12px; font-size: 12px; letter-spacing: 0.10em; text-transform: uppercase;
    box-shadow: 0 8px 22px rgba(29,251,20,0.30);
}

/* --- Moments ------------------------------------------------------- */
.moments-grid {
    display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 16px;
}
.moments-item {
    position: relative; border-radius: 14px; overflow: hidden;
}
.moments-img { width: 100%; height: 400px; object-fit: cover; }
.moments-caption {
    position: absolute; left: 16px; bottom: 16px;
    padding: 6px 10px; border-radius: 999px;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(8px);
    font: 600 11px/1 var(--font-sans);
    letter-spacing: 0.10em; text-transform: uppercase;
    color: var(--itf-deep);
}

/* --- Event cards --------------------------------------------------- */
.event-card {
    padding: 26px; min-height: 260px;
    display: flex; flex-direction: column; justify-content: space-between;
}
.event-card__date { display: flex; align-items: baseline; gap: 8px; }
.event-card__day {
    font: 600 56px/1 var(--font-cond), 'IBM Plex Sans', sans-serif;
    letter-spacing: -0.02em;
}
.event-card__meta {
    font-weight: 600; font-size: 13px;
    letter-spacing: 0.14em; text-transform: uppercase;
}

/* --- Member tiles -------------------------------------------------- */
.member-tile {
    padding: 22px; min-height: 120px;
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    gap: 10px; text-align: center;
    text-decoration: none; color: inherit;
    transition: background 0.25s, color 0.25s, border-color 0.25s;
}
.member-tile:hover {
    background: var(--itf-deep); color: #fff; border-color: var(--itf-deep);
}
.member-tile:hover .member-tile__label { color: var(--itf-lime); }
.member-tile__logo { line-height: 0; }
.member-tile__logo img { display: block; max-height: 36px; width: auto; object-fit: contain; }
.member-tile__name { font-weight: 600; font-size: 15px; letter-spacing: -0.01em; }
.member-tile__label {
    margin-top: 6px; font-size: 11px; font-weight: 600;
    letter-spacing: 0.12em; text-transform: uppercase;
    color: var(--itf-mute); transition: color 0.25s;
}
.members-divider {
    margin-top: 28px; display: flex; align-items: center; gap: 16px;
    color: var(--itf-mute); font-size: 13px; font-weight: 500;
}

/* --- Region map ---------------------------------------------------- */
.region-map {
    position: relative; aspect-ratio: 4 / 3;
    background: var(--itf-alice);
    border-radius: 16px; overflow: hidden;
    border: 1px solid var(--border);
}
.region-map svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.region-map__label {
    position: absolute; transform: translate(12px, -8px);
    font-size: 12px; font-weight: 600; color: var(--itf-deep);
    background: rgba(255,255,255,0.85);
    padding: 3px 8px; border-radius: 6px; white-space: nowrap;
}
.region-stats {
    margin-top: 28px;
    display: grid; grid-template-columns: repeat(2, max-content);
    gap: 16px 40px;
}
.region-stat__number {
    font: 600 32px/1 var(--font-cond), 'IBM Plex Sans', sans-serif;
    letter-spacing: -0.02em; color: var(--itf-deep);
}
.region-stat__label {
    margin-top: 4px; font-size: 12px; font-weight: 600;
    letter-spacing: 0.12em; text-transform: uppercase;
    color: var(--itf-mute);
}

/* --- BITMi graphic ------------------------------------------------- */
.bitmi-features {
    margin-top: 32px;
    display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
    max-width: 520px;
}
.bitmi-feature-card {
    position: relative; padding: 14px 16px;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 4px;
}
.bitmi-graphic {
    position: relative; aspect-ratio: 4 / 3.4;
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 16px; overflow: hidden;
}
.bitmi-graphic svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.bitmi-graphic__label-rn {
    position: absolute; left: 32px; top: 32px;
    color: #fff; font-size: 12px; font-weight: 600;
    letter-spacing: 0.14em; text-transform: uppercase; opacity: 0.85;
}
.bitmi-graphic__label-berlin {
    position: absolute; right: 32px; top: 32px;
    color: var(--itf-lime); font-size: 12px; font-weight: 600;
    letter-spacing: 0.14em; text-transform: uppercase;
}
.bitmi-graphic__chip-rn {
    position: absolute; left: 6%; bottom: 8%;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.12);
    padding: 8px 12px; border-radius: 999px;
    color: #fff; font-size: 12px; font-weight: 600;
    backdrop-filter: blur(8px);
}
.bitmi-graphic__chip-bitmi {
    position: absolute; right: 4%; top: 34%;
    background: var(--itf-lime); color: var(--itf-deep);
    padding: 10px 14px; border-radius: 999px;
    font-size: 12px; font-weight: 600;
    letter-spacing: 0.10em; text-transform: uppercase;
    box-shadow: 0 12px 30px rgba(29,251,20,0.30);
}

/* --- CTA Form Card ------------------------------------------------- */
.cta-form-card {
    position: relative;
    background: #fff; border: 1px solid var(--border);
    border-radius: 16px; padding: 32px;
    box-shadow: var(--shadow-2);
}
.cta-input {
    width: 100%; padding: 12px 14px;
    background: #fff; border: 1px solid var(--border-strong);
    border-radius: 8px; color: var(--itf-deep);
    font: 400 14px/1 var(--font-sans);
    outline: none;
    transition: border-color var(--t-fast), box-shadow var(--t-fast);
}
.cta-input::placeholder { color: var(--itf-mute); }
.cta-input:focus { border-color: var(--itf-deep); box-shadow: 0 0 0 3px rgba(29,251,20,0.45); }

/* --- Text-Image ---------------------------------------------------- */
.text-image__media { border-radius: 16px; overflow: hidden; }
.text-image__img { width: 100%; height: auto; display: block; }

/* --- Footer -------------------------------------------------------- */
.site-footer { background: var(--itf-deep-900); color: #fff; padding: 80px 0 32px; }
.site-footer__grid {
    display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 48px;
}
.site-footer__desc {
    margin-top: 20px; font-size: 14px; line-height: 1.6;
    color: rgba(255,255,255,0.7); max-width: 320px;
}
.site-footer__badge {
    margin-top: 20px;
    display: inline-flex; align-items: center; gap: 10px;
    padding: 10px 14px;
    background: rgba(29,251,20,0.10);
    border: 1px solid rgba(29,251,20,0.30);
    border-radius: 999px; font-size: 12px;
    color: #1DFB14; letter-spacing: 0.10em;
    text-transform: uppercase; font-weight: 600;
}
.site-footer__col h5 {
    font: 600 12px/1 var(--font-sans);
    letter-spacing: 0.14em; text-transform: uppercase;
    color: var(--itf-lime); margin: 0 0 16px;
}
.site-footer__col a,
.site-footer__col span {
    color: rgba(255,255,255,0.78);
    font: 400 14px/1.8 var(--font-sans); display: block;
}
.site-footer__col a:hover { color: var(--itf-lime); }
.site-footer__bottom {
    margin-top: 56px; padding-top: 24px;
    border-top: 1px solid rgba(255,255,255,0.08);
    display: flex; justify-content: space-between; align-items: center;
    color: rgba(255,255,255,0.55);
    font: 400 13px/1 var(--font-sans);
}
.site-footer__legal { display: flex; gap: 24px; }
.site-footer__legal a { display: inline; color: rgba(255,255,255,0.55); }
.site-footer__legal a:hover { color: var(--itf-lime); }

/* --- Article prose ------------------------------------------------- */
.article-prose { font: 400 var(--fs-body)/1.7 var(--font-sans); color: var(--fg-1); }
.article-prose h2 { font: 600 var(--fs-h3)/1.3 var(--font-sans); margin: 48px 0 16px; }
.article-prose h3 { font: 600 var(--fs-h4)/1.3 var(--font-sans); margin: 36px 0 12px; }
.article-prose p { margin: 0 0 20px; }
.article-prose ul, .article-prose ol { margin: 0 0 20px; padding-left: 24px; }
.article-prose img { border-radius: var(--r-md); margin: 32px 0; }
.article-prose a { color: var(--itf-deep); text-decoration: underline; text-decoration-color: var(--itf-lime); text-underline-offset: 3px; }

/* ===== RESPONSIVE ===== */

@media (max-width: 1024px) {
    .hero-grid-2col { grid-template-columns: 1fr; gap: 32px; }
    .hero-stage { max-width: 380px; margin: 0 auto; }
    .grid-2col,
    .grid-2col--wide,
    .grid-2col--map,
    .grid-2col--bitmi,
    .grid-2col--cta,
    .grid-2col--text-image { grid-template-columns: 1fr; gap: 40px; }
    .grid-2col--reversed { direction: ltr; }
}

@media (max-width: 860px) {
    .site-header__nav { display: none; }
    .site-header__cta { display: none; }
    .burger { display: inline-flex; }
    .section { padding: 64px 0; }
    .hero { padding: 48px 0 56px; }
    .benefits-grid,
    .topics-grid,
    .events-grid,
    .events-grid--archive,
    .members-grid,
    .members-grid--archive,
    .moments-grid,
    .site-footer__grid,
    .grid-2col-header,
    .bitmi-features { grid-template-columns: 1fr !important; gap: 16px; }
    .moments-img { height: 300px; }

    /* Detail-Layout (Mitglied + Event) wird einspaltig */
    .member-detail { padding-top: 56px; padding-bottom: 56px; }
    .member-detail__grid {
        grid-template-columns: 1fr !important;
        gap: 40px !important;
    }
    .member-detail__sidebar {
        position: static !important; top: auto !important;
        padding: 24px 22px;
    }
    .member-detail__content { max-width: 100% !important; }
    .member-detail__content h1 { hyphens: auto; -webkit-hyphens: auto; }
}

/* Mobile: alle Mehrspalter werden einspaltig */
@media (max-width: 640px) {
    .members-grid,
    .members-grid--archive,
    .events-grid,
    .events-grid--archive,
    .benefits-grid,
    .topics-grid,
    .moments-grid,
    .bitmi-features,
    .site-footer__grid,
    .grid-2col,
    .grid-2col--cta,
    .grid-2col--wide,
    .grid-2col--text-image,
    .grid-2col-header,
    .article-layout,
    .field-grid {
        grid-template-columns: 1fr !important;
        gap: 16px;
    }
    .field--full { grid-column: 1; }

    .hero-stats { grid-template-columns: 1fr; }
    .hero-stat { border-left: none; padding-left: 0; padding-top: 16px; border-top: 1px solid var(--itf-line); }
    .hero-stat:first-child { padding-top: 0; border-top: none; }

    .site-footer__bottom { flex-direction: column; gap: 12px; text-align: center; }
    .site-footer__legal { flex-wrap: wrap; justify-content: center; }

    .container { padding-left: 20px; padding-right: 20px; }
}

@media (max-width: 540px) {
    .h-hero { font-size: 26px; }
    .h-1    { font-size: 30px; }
    .h-2    { font-size: 24px; }
    .h-3    { font-size: 19px; }
    .lead   { font-size: 17px; }
    .section { padding: 48px 0; }
    .hero { padding: 32px 0 40px; }
    .hero-stat__number { font-size: 32px; }
    .moments-img { height: 240px; }
    .event-card__day { font-size: 40px; }
    .member-detail { padding-top: 40px; padding-bottom: 48px; }
    .member-detail__content h1 { font-size: 26px; line-height: 1.2; }
    .member-detail__sidebar { padding: 22px 18px; }
    .member-detail__logo img { max-width: 140px; }
}

/* --- Member detail page --------------------------------------------- */
.member-detail { padding-top: 80px; padding-bottom: 80px; }
.member-detail__grid {
    display: grid; grid-template-columns: 1fr 320px;
    gap: clamp(40px, 5vw, 80px); align-items: start;
}
.member-detail__content { max-width: 760px; }
.member-detail__content h1 {
    font: 700 var(--fs-h1)/1.1 var(--font-sans);
    letter-spacing: -0.02em; color: var(--itf-deep);
    margin: 0 0 32px;
    hyphens: auto;
    -webkit-hyphens: auto;
    overflow-wrap: break-word;
    hyphenate-limit-chars: 8 4 4;
}
.member-detail__content .article-prose {
    font-size: var(--fs-body); line-height: 1.7; color: var(--fg-1);
}
.member-detail__content .article-prose p { margin: 0 0 1.2em; }
.member-detail__content .article-prose h2 {
    font-size: var(--fs-h3); font-weight: 700; margin: 2em 0 0.6em;
}
.member-detail__content .article-prose h3 {
    font-size: 18px; font-weight: 600; margin: 1.6em 0 0.5em;
}
.member-detail__sidebar {
    position: sticky; top: 120px;
    padding: 32px 28px; border-radius: var(--r-lg);
    background: var(--itf-fog); border: 1px solid var(--itf-line);
}
.member-detail__logo {
    margin-bottom: 24px; line-height: 0;
}
.member-detail__logo img {
    max-width: 180px; max-height: 60px; width: auto; object-fit: contain;
}
.member-detail__meta {
    margin-top: 20px; padding-top: 20px;
    border-top: 1px solid var(--itf-line);
    font-size: var(--fs-small); color: var(--itf-mute);
}
.member-detail__meta a {
    display: inline-flex; align-items: center; gap: 6px;
    color: var(--itf-deep); font-weight: 600;
    text-decoration: none; transition: color 0.2s;
}
.member-detail__meta a:hover { color: var(--itf-lime-600); }

.member-detail__contact {
    margin-top: 22px; padding-top: 22px;
    border-top: 1px solid var(--itf-line);
    display: grid; gap: 16px;
}
.member-detail__contact-row { display: flex; flex-direction: column; gap: 3px; }
.member-detail__contact-label {
    font-size: 11px; font-weight: 600;
    letter-spacing: 0.10em; text-transform: uppercase;
    color: var(--itf-mute);
}
.member-detail__contact-value {
    font-size: 14px; color: var(--itf-deep); line-height: 1.45;
    text-decoration: none;
}
a.member-detail__contact-value:hover { color: var(--itf-lime-600); }

.member-tag-row { display: flex; gap: 6px; flex-wrap: wrap; }
.member-tag {
    display: inline-block;
    font: 600 11px/1 var(--font-sans);
    letter-spacing: 0.06em;
    padding: 5px 10px; border-radius: 999px;
    background: var(--itf-alice); color: var(--itf-deep);
    border: 1px solid var(--itf-line);
}
.member-detail__back {
    display: inline-flex; align-items: center; gap: 8px;
    font-size: var(--fs-small); font-weight: 600; color: var(--itf-mute);
    text-decoration: none; margin-bottom: 32px; transition: color 0.2s;
}
.member-detail__back:hover { color: var(--itf-deep); }
.member-detail__back svg { width: 16px; height: 16px; }

/* --- Article layout (shared) --------------------------------------- */
.article-layout {
    display: grid; grid-template-columns: 3fr 1fr;
    gap: clamp(32px, 4vw, 60px); align-items: start;
}
@media (max-width: 860px) { .article-layout { grid-template-columns: 1fr; gap: 44px; } }

.art-aside { position: sticky; top: 96px; display: flex; flex-direction: column; gap: 22px; }
@media (max-width: 860px) { .art-aside { position: static; } }
.art-aside__card {
    background: var(--itf-alice); border: 1px solid var(--border);
    border-radius: 14px; padding: 22px;
}
.art-aside__label {
    font: 600 11px/1 var(--font-sans); letter-spacing: 0.12em;
    text-transform: uppercase; color: var(--itf-mute); margin-bottom: 14px;
}
.art-aside__bio {
    font: 400 13px/1.55 var(--font-sans); color: var(--itf-mute); margin: 8px 0 0;
}
.art-aside__block { border-top: 1px solid var(--border); padding-top: 22px; }

/* --- Form page ------------------------------------------------------ */
.form-page { padding: clamp(48px, 6vw, 80px) 0 clamp(64px, 8vw, 120px); }

.form-aside-steps { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 16px; }
.form-aside-steps li { display: grid; grid-template-columns: 24px 1fr; gap: 10px; }
.form-aside-steps li .n { font: 600 12px/1.5 var(--font-mono); color: var(--itf-mute); }
.form-aside-steps li .t { font: 400 13px/1.5 var(--font-sans); color: var(--itf-deep); }
.form-aside__contact { margin-top: 14px; display: flex; flex-direction: column; gap: 6px; }
.form-aside__contact a { font: 500 14px/1.5 var(--font-sans); color: var(--itf-deep); text-decoration: none; }
.form-aside__contact a:hover { color: var(--itf-deep-700); }

.form-intro { margin-bottom: 48px; }
.form-intro .h-page {
    font: 600 clamp(32px, 4vw, 48px)/1.1 var(--font-sans);
    letter-spacing: -0.025em; color: var(--itf-deep);
    margin: 20px 0 0; text-wrap: balance;
}
.form-intro .lead { margin-top: 24px; max-width: 680px; }
.form-hint {
    margin-top: 20px; padding: 18px 20px;
    background: var(--itf-alice); border: 1px solid var(--itf-alice-deep);
    border-radius: 12px; font: 400 15px/1.6 var(--font-sans); color: var(--itf-deep);
}

/* Form sections */
.form-section { margin-top: 48px; padding-top: 40px; border-top: 1px solid var(--border); }
.form-section__head { display: flex; align-items: baseline; gap: 14px; margin-bottom: 28px; }
.form-section__num { font: 600 13px/1 var(--font-mono); color: var(--itf-mute); flex-shrink: 0; }
.form-section__title { font: 600 24px/1.2 var(--font-sans); letter-spacing: -0.015em; color: var(--itf-deep); }
.form-section__desc { font: 400 15px/1.6 var(--font-sans); color: var(--itf-mute); margin: -16px 0 24px; }

/* Fields */
.field-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 640px) { .field-grid { grid-template-columns: 1fr; } }
.field-grid .field--full { grid-column: 1 / -1; }

.field { display: flex; flex-direction: column; gap: 6px; }
.field__label { font: 500 13px/1 var(--font-sans); color: var(--itf-deep); letter-spacing: 0.01em; }
.field__label .req { color: var(--itf-strawberry); margin-left: 2px; }
.field__input {
    width: 100%; padding: 13px 16px; background: #fff;
    border: 1px solid var(--border-strong); border-radius: 8px;
    color: var(--itf-deep); font: 400 15px/1.3 var(--font-sans);
    outline: none; transition: border-color var(--t-fast), box-shadow var(--t-fast);
    box-sizing: border-box;
}
.field__input::placeholder { color: var(--fg-3); }
.field__input:focus { border-color: var(--itf-deep); box-shadow: 0 0 0 3px rgba(36,59,83,0.10); }
.field__input:invalid:not(:placeholder-shown) { border-color: var(--itf-strawberry); }
.field__hint { font: 400 12px/1.4 var(--font-sans); color: var(--itf-mute); }
select.field__input {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236B7C8E' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat; background-position: right 14px center; background-size: 12px; padding-right: 40px;
}

/* Membership cards */
.membership-options { display: flex; flex-direction: column; gap: 12px; }
.membership-card {
    position: relative; display: grid; grid-template-columns: 1fr auto;
    gap: 16px; align-items: center; padding: 20px 22px;
    border: 1.5px solid var(--border); border-radius: 12px;
    background: #fff; cursor: pointer;
    transition: border-color var(--t-fast), box-shadow var(--t-fast), background var(--t-fast);
}
.membership-card:hover { border-color: var(--itf-deep-500); background: var(--itf-paper); }
.membership-card--active { border-color: var(--itf-deep); box-shadow: 0 0 0 3px rgba(36,59,83,0.10); background: var(--itf-paper); }
.membership-card__radio {
    position: absolute; width: 20px; height: 20px; top: 22px; left: 22px;
    border: 2px solid var(--border-strong); border-radius: 999px; background: #fff;
    transition: border-color var(--t-fast), background var(--t-fast);
}
.membership-card--active .membership-card__radio { border-color: var(--itf-deep); background: var(--itf-deep); box-shadow: inset 0 0 0 3px #fff; }
.membership-card__body { padding-left: 36px; }
.membership-card__title { font: 500 15px/1.4 var(--font-sans); color: var(--itf-deep); }
.membership-card__price {
    font: 600 22px/1 var(--font-cond); letter-spacing: -0.01em;
    color: var(--itf-deep); white-space: nowrap; text-align: right;
}
.membership-card__price span { display: block; font: 500 11px/1 var(--font-sans); letter-spacing: 0.10em; text-transform: uppercase; color: var(--itf-mute); margin-top: 4px; }

/* Beitrag display */
.beitrag-display {
    display: flex; align-items: center; justify-content: space-between; gap: 24px;
    padding: 22px 24px; background: var(--itf-alice); border: 1px solid var(--itf-alice-deep);
    border-radius: 12px; margin-bottom: 18px;
}
.beitrag-display__amount { font: 600 36px/1 var(--font-cond); letter-spacing: -0.02em; color: var(--itf-deep); }
.beitrag-display__label { font: 500 14px/1.4 var(--font-sans); color: var(--itf-mute); }

/* Checkbox */
.check-row { display: flex; align-items: flex-start; gap: 14px; padding: 14px 0; cursor: pointer; }
.check-row + .check-row { border-top: 1px solid var(--itf-fog); }
.check-box {
    flex-shrink: 0; width: 22px; height: 22px;
    border: 1.5px solid var(--border-strong); border-radius: 6px; background: #fff;
    display: flex; align-items: center; justify-content: center;
    transition: background var(--t-fast), border-color var(--t-fast); margin-top: 1px;
}
.check-box--checked { background: var(--itf-deep); border-color: var(--itf-deep); }
.check-box svg { width: 14px; height: 14px; }
.check-label { font: 400 15px/1.55 var(--font-sans); color: var(--itf-deep); }
.check-label a { text-decoration: underline; text-decoration-color: var(--itf-lime); text-decoration-thickness: 2px; text-underline-offset: 3px; }

/* Bank fields reveal */
.bank-fields {
    max-height: 0; overflow: hidden; opacity: 0;
    transition: max-height 420ms var(--ease-out), opacity 320ms, margin 320ms; margin-top: 0;
}
.bank-fields--open { max-height: 600px; opacity: 1; margin-top: 20px; }
.bank-fields__inner { padding: 22px 24px; background: var(--itf-paper); border: 1px solid var(--border); border-radius: 12px; }
.bank-fields__text { font: 400 14px/1.6 var(--font-sans); color: var(--itf-mute); margin-bottom: 20px; }

/* Signature */
.sig-wrap {
    border: 1.5px dashed var(--border-strong); border-radius: 12px;
    background: var(--itf-paper); padding: 8px; position: relative;
    transition: border-color var(--t-fast);
}
.sig-wrap:hover { border-color: var(--itf-deep-500); }
.sig-wrap--active { border-color: var(--itf-deep); border-style: solid; }
.sig-canvas { display: block; width: 100%; height: 160px; border-radius: 8px; cursor: crosshair; touch-action: none; }
.sig-actions { display: flex; justify-content: space-between; align-items: center; margin-top: 10px; }
.sig-clear {
    font: 500 13px/1 var(--font-sans); color: var(--itf-mute);
    background: none; border: none; cursor: pointer; padding: 6px 0;
    transition: color var(--t-fast);
}
.sig-clear:hover { color: var(--itf-strawberry); }
.sig-hint { font: 400 13px/1 var(--font-sans); color: var(--fg-3); }
.sig-legal { margin-top: 14px; font: 400 13px/1.55 var(--font-sans); color: var(--itf-mute); }

/* Submit */
.form-submit {
    margin-top: 48px; padding-top: 40px; border-top: 1px solid var(--border);
    display: flex; flex-direction: column; align-items: center; gap: 14px;
}
.form-submit__hint { font: 400 13px/1.5 var(--font-sans); color: var(--itf-mute); }
.btn--primary[disabled] { background: var(--itf-line); color: var(--itf-mute); box-shadow: none; cursor: not-allowed; }
.btn--primary[disabled]:hover { box-shadow: none; transform: none; }

/* Success overlay */
.form-success { text-align: center; padding: 64px 24px; }
.form-success__icon {
    width: 72px; height: 72px; border-radius: 999px; background: var(--itf-alice);
    display: inline-flex; align-items: center; justify-content: center; margin-bottom: 24px;
}
.form-success__title { font: 600 28px/1.2 var(--font-sans); letter-spacing: -0.02em; color: var(--itf-deep); }
.form-success__text { margin-top: 16px; font: 400 17px/1.6 var(--font-sans); color: var(--itf-mute); max-width: 540px; margin-left: auto; margin-right: auto; }

/* Form responsive */
@media (max-width: 640px) {
    .membership-card { grid-template-columns: 1fr; gap: 10px; }
    .membership-card__price { text-align: left; padding-left: 36px; }
    .beitrag-display { flex-direction: column; align-items: flex-start; gap: 8px; }
}