@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,wght@0,300;0,400;0,500;0,600;0,700;1,300;1,400&display=swap');

* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --yellow:      #fcd202;
    --yellow-muted:#e8c800;
    --navy:        #002e3d;
    --navy-deep:   #001f2b;
    --navy-mid:    #003d50;
    --navy-light:  #004d65;
    --white:       #ffffff;
    --off-white:   #f6f5f0;
    --text-dark:   #0a1628;
    --text-mid:    #3a4a5c;
    --text-light:  #8a9bb0;

    --size-lg: clamp(1.8rem, 3.5vw, 2.8rem);
    --size-md: 1rem;
    --size-sm: 0.78rem;
}

html { scroll-behavior: smooth; }

body {
    font-family: 'DM Sans', sans-serif;
    font-weight: 400;
    font-size: var(--size-md);
    color: var(--text-dark);
    overflow-x: hidden;
    background: var(--off-white);
    cursor: none;
}

a, button, input, textarea, select { cursor: none !important; }

/* ─── CURSOR ─────────────────────────────────────────────── */
.cursor {
    width: 46px; height: 46px;
    position: fixed;
    top: 0; left: 0;
    pointer-events: none;
    z-index: 99999;
    will-change: transform;
    transition: width .18s ease, height .18s ease, opacity .2s ease;
}
.cursor img {
    width: 100%; height: 100%;
    object-fit: contain;
    filter: brightness(1.6) saturate(0.7) drop-shadow(0 1px 4px rgba(0,0,0,.3));
}
.cursor.hover { width: 64px; height: 64px; }

/* ─── HEADER ─────────────────────────────────────────────── */
header {
    position: fixed;
    top: 0; left: 0; right: 0;
    padding: 1.3rem 4rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 1000;
    background: var(--navy);
    border-bottom: 2px solid rgba(252,210,2,0.18);
    transition: padding .3s ease, box-shadow .3s ease;
}
header.scrolled {
    padding: .9rem 4rem;
    box-shadow: 0 4px 32px rgba(0,0,0,.3);
}

.logo { display: flex; align-items: center; }
.logo img {
    width: 55px; height: 55px;
    object-fit: contain;
    filter: brightness(1.3) drop-shadow(0 2px 8px rgba(252,210,2,.25));
    transition: transform .3s ease;
}
.logo:hover img { transform: rotate(-5deg) scale(1.06); }

/* "Commerzbank" text — hidden entirely */
.logo-text { display: none; }

.menu-btn {
    background: transparent;
    border: 1.5px solid rgba(255,255,255,.35);
    font-family: 'DM Sans', sans-serif;
    font-size: var(--size-sm);
    font-weight: 600;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--white);
    padding: .65rem 1.8rem;
    position: relative;
    z-index: 1001;
    overflow: hidden;
    transition: border-color .25s ease, color .25s ease;
}
.menu-btn::before {
    content: '';
    position: absolute; inset: 0;
    background: rgba(252,210,2,.15);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform .25s ease;
    z-index: -1;
}
.menu-btn:hover::before  { transform: scaleX(1); }
.menu-btn:hover { border-color: rgba(252,210,2,.5); color: var(--yellow); }

/* ─── MENU OVERLAY ───────────────────────────────────────── */
.menu-overlay {
    position: fixed; inset: 0;
    background: var(--navy-deep);
    z-index: 9999;
    display: flex; align-items: center; justify-content: center;
    opacity: 0; visibility: hidden;
    transition: opacity .3s ease, visibility .3s ease;
}
.menu-overlay::before {
    content: '';
    position: absolute; inset: 0;
    background-image:
        linear-gradient(rgba(252,210,2,.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(252,210,2,.035) 1px, transparent 1px);
    background-size: 80px 80px;
    pointer-events: none;
}
.menu-overlay.active { opacity: 1; visibility: visible; }

.menu-close {
    position: absolute; top: 1.8rem; right: 3.5rem;
    background: none;
    border: 1px solid rgba(255,255,255,.2);
    color: var(--white);
    font-size: 1.8rem;
    width: 48px; height: 48px;
    display: flex; align-items: center; justify-content: center;
    transition: all .25s ease;
}
.menu-close:hover { color: var(--yellow); border-color: rgba(252,210,2,.5); transform: rotate(90deg); }

.menu-nav { list-style: none; position: relative; z-index: 1; }
.menu-nav li {
    margin: 1.3rem 0;
    opacity: 0; transform: translateX(-30px);
    transition: opacity .3s ease, transform .3s ease;
}
.menu-overlay.active .menu-nav li { opacity: 1; transform: translateX(0); }
.menu-overlay.active .menu-nav li:nth-child(1) { transition-delay: .05s; }
.menu-overlay.active .menu-nav li:nth-child(2) { transition-delay: .1s; }
.menu-overlay.active .menu-nav li:nth-child(3) { transition-delay: .15s; }
.menu-overlay.active .menu-nav li:nth-child(4) { transition-delay: .2s; }
.menu-overlay.active .menu-nav li:nth-child(5) { transition-delay: .25s; }

.menu-nav a {
    color: var(--white);
    text-decoration: none;
    font-family: 'DM Sans', sans-serif;
    font-size: clamp(2rem, 4vw, 3.2rem);
    font-weight: 700;
    display: flex; align-items: center; gap: 1.8rem;
    transition: color .2s ease, transform .2s ease;
    line-height: 1.1;
    letter-spacing: -.5px;
}
.menu-nav a:hover { color: var(--yellow); transform: translateX(14px); }
.menu-nav .number {
    font-size: var(--size-sm);
    font-weight: 500;
    letter-spacing: 2px;
    opacity: .35;
    min-width: 44px;
    color: var(--yellow);
}

/* ─── HERO ───────────────────────────────────────────────── */
.hero {
    height: 100vh;
    position: relative; overflow: hidden;
    display: flex; align-items: center; justify-content: center;
}
.hero-video {
    position: absolute; inset: 0;
    width: 100%; height: 100%;
    object-fit: cover; z-index: 0;
    transform: scale(1.04);
    transition: transform 8s ease;
}
.hero:hover .hero-video { transform: scale(1); }
.hero-overlay {
    position: absolute; inset: 0;
    background: linear-gradient(160deg,rgba(0,31,43,.78) 0%,rgba(0,46,61,.5) 50%,rgba(0,0,0,.6) 100%);
    z-index: 1;
}
.hero::after {
    content: '';
    position: absolute; bottom: 0; left: 0;
    width: 100%; height: 5px;
    background: var(--yellow); z-index: 3;
}
.hero-content {
    position: relative; z-index: 2;
    text-align: center; color: var(--white); padding: 0 2rem;
}
.hero-content h1 {
    font-family: 'DM Sans', sans-serif;
    font-size: clamp(3rem, 8vw, 6.5rem);
    font-weight: 700; line-height: 1;
    margin-bottom: 1.5rem; letter-spacing: -2px;
    animation: heroUp 1.2s cubic-bezier(.16,1,.3,1) both;
}
.hero-content h1 span { color: var(--yellow); }
.hero-subtitle {
    font-size: clamp(.9rem, 1.8vw, 1.2rem);
    font-weight: 300; letter-spacing: 4px; text-transform: uppercase;
    opacity: .8;
    animation: heroUp 1.2s cubic-bezier(.16,1,.3,1) .2s both;
}
.hero-cta {
    display: inline-flex; align-items: center; gap: .8rem;
    margin-top: 3rem; padding: 1rem 2.5rem;
    background: var(--yellow); color: var(--navy);
    text-decoration: none;
    font-size: var(--size-sm); font-weight: 700;
    letter-spacing: 2px; text-transform: uppercase;
    transition: background .3s ease, transform .3s ease, box-shadow .3s ease;
    animation: heroUp 1.2s cubic-bezier(.16,1,.3,1) .4s both;
}
.hero-cta::after { content: '→'; transition: transform .3s ease; }
.hero-cta:hover { background: var(--yellow-muted); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(252,210,2,.2); }
.hero-cta:hover::after { transform: translateX(4px); }
@keyframes heroUp { from{opacity:0;transform:translateY(40px)} to{opacity:1;transform:translateY(0)} }

.scroll-indicator {
    position: absolute; bottom: 2.5rem; left: 50%;
    transform: translateX(-50%); z-index: 3;
    display: flex; flex-direction: column; align-items: center; gap: .5rem;
}
.scroll-indicator span {
    font-size: var(--size-sm); font-weight: 500;
    letter-spacing: 3px; text-transform: uppercase;
    color: rgba(255,255,255,.45);
}
.scroll-line {
    width: 1px; height: 48px;
    background: linear-gradient(to bottom, rgba(255,255,255,.5), transparent);
    animation: scrollDrop 2.2s ease infinite;
}
@keyframes scrollDrop {
    0%   { transform:scaleY(0); transform-origin:top; opacity:0; }
    50%  { opacity:1; }
    100% { transform:scaleY(1); transform-origin:top; opacity:0; }
}

/* ─── SPLIT SECTIONS ─────────────────────────────────────── */
.split-section {
    min-height: 100vh;
    display: flex; align-items: stretch;
    padding-top: 82px;
}
.video-container {
    flex: 1; position: sticky; top: 82px;
    height: calc(100vh - 82px); overflow: hidden;
}
.video-container::after {
    content: '';
    position: absolute; inset: 0;
    background: linear-gradient(135deg,rgba(0,31,43,.28) 0%,transparent 60%);
    pointer-events: none;
}
.section-video { width: 100%; height: 100%; object-fit: cover; transition: transform .8s ease; }
.video-container:hover .section-video { transform: scale(1.03); }

.content-container {
    flex: 1; padding: 5rem 4rem 5rem 5rem;
    overflow-y: auto; background: var(--off-white);
    position: relative;
}
.content-container::before {
    content: '';
    position: absolute; left: 0; top: 10%;
    height: 80%; width: 3px;
    background: linear-gradient(to bottom, transparent, var(--yellow), transparent);
}
.section-content { max-width: 680px; }

/* ─── TYPOGRAPHY ─────────────────────────────────────────── */
.section-title {
    font-size: var(--size-lg);
    font-weight: 700; color: var(--navy);
    margin-bottom: 1.8rem; line-height: 1.15;
    opacity: 0; transform: translateY(28px);
    transition: opacity .8s ease, transform .8s ease;
    position: relative; padding-bottom: 1.3rem;
    letter-spacing: -.5px;
}
.section-title::after {
    content: '';
    position: absolute; bottom: 0; left: 0;
    width: 60px; height: 3px;
    background: var(--yellow);
    transition: width .55s ease .25s;
}
.section-title.visible { opacity: 1; transform: translateY(0); }
.section-title.visible::after { width: 96px; }

.section-text {
    font-size: var(--size-md); line-height: 1.9;
    color: var(--text-mid); margin-bottom: 2rem;
    font-weight: 300;
    opacity: 0; transform: translateY(18px);
    transition: opacity .8s ease .12s, transform .8s ease .12s;
}
.section-text.visible { opacity: 1; transform: translateY(0); }

/* ─── CARDS ──────────────────────────────────────────────── */
.academic-item, .experience-item {
    margin: 1.7rem 0; padding: 1.9rem 2rem 1.9rem 2.2rem;
    background: var(--white);
    border-left: 4px solid var(--yellow);
    border-radius: 0 8px 8px 0;
    opacity: 0; transform: translateX(-18px);
    transition: opacity .65s ease, transform .65s ease,
                border-color .25s ease, box-shadow .25s ease;
    box-shadow: 0 2px 14px rgba(0,46,61,.04);
    position: relative; overflow: hidden;
}
.academic-item::before, .experience-item::before {
    content: ''; position: absolute; top: 0; right: 0;
    width: 0; height: 100%;
    background: linear-gradient(to left,rgba(252,210,2,.035),transparent);
    transition: width .35s ease;
}
.academic-item:hover::before, .experience-item:hover::before { width: 100%; }
.academic-item.visible, .experience-item.visible { opacity: 1; transform: translateX(0); }
.academic-item:hover, .experience-item:hover {
    border-left-color: var(--navy);
    box-shadow: 0 6px 26px rgba(0,46,61,.09);
    transform: translateX(5px);
}
.academic-item h3, .experience-item h3 {
    color: var(--navy); margin-bottom: .4rem;
    font-size: var(--size-md); font-weight: 700;
}
.academic-item p, .experience-item p {
    color: var(--text-mid); line-height: 1.7;
    font-size: var(--size-md); margin-top: .3rem;
}
.academic-item strong, .experience-item strong { color: var(--navy); font-weight: 600; }
.academic-item p:first-of-type, .experience-item p:first-of-type {
    font-size: var(--size-sm); font-weight: 600;
    letter-spacing: 1.5px; text-transform: uppercase;
    color: var(--text-light); margin-bottom: .5rem;
}
.academic-item:nth-child(1),.experience-item:nth-child(1){transition-delay:.08s}
.academic-item:nth-child(2),.experience-item:nth-child(2){transition-delay:.16s}
.academic-item:nth-child(3),.experience-item:nth-child(3){transition-delay:.24s}
.academic-item:nth-child(4),.experience-item:nth-child(4){transition-delay:.32s}

/* ─── YOUTUBE SPLIT ──────────────────────────────────────── */
.youtube-section {
    display: flex; align-items: stretch;
    min-height: 100vh;
    background: var(--navy-deep);
    padding-top: 82px; /* header height */
}
.yt-embed {
    flex: 1; position: sticky; top: 82px;
    height: calc(100vh - 82px);
    display: flex; flex-direction: column; justify-content: center;
    padding: 3rem;
    background: var(--navy-deep);
    align-self: flex-start;
}
.yt-frame-wrap {
    position: relative; padding-bottom: 56.25%;
    height: 0; overflow: hidden;
    border: 1px solid rgba(252,210,2,.15);
}
.yt-frame-wrap iframe {
    position: absolute; top: 0; left: 0;
    width: 100%; height: 100%; border: none;
}
.yt-caption {
    margin-top: 1rem;
    font-size: var(--size-sm);
    letter-spacing: 2px; text-transform: uppercase;
    color: rgba(255,255,255,.25); font-weight: 500;
}
.yt-content {
    flex: 1; padding: 5rem 4rem;
    overflow-y: auto; color: var(--white);
    background: var(--navy);
    border-left: 1px solid rgba(252,210,2,.08);
}
.yt-content .section-title { color: var(--white); }
.yt-content .section-title::after { background: var(--yellow); }
.yt-content .section-text { color: rgba(255,255,255,.55); }
.yt-content::-webkit-scrollbar { width: 3px; }
.yt-content::-webkit-scrollbar-thumb { background: rgba(252,210,2,.25); border-radius: 3px; }

/* ── Timestamp placeholders ── */
.yt-timestamps {
    margin-top: 1.4rem;
    border-top: 1px solid rgba(252,210,2,.1);
    padding-top: 1rem;
}
.ts-label {
    font-size: var(--size-sm);
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: rgba(255,255,255,.2);
    margin-bottom: .6rem;
}
.ts-item {
    display: flex;
    gap: .8rem;
    padding: .3rem 0;
    border-bottom: 1px solid rgba(255,255,255,.04);
    align-items: center;
}
.ts-item:last-child { border-bottom: none; }
.ts-time {
    font-size: var(--size-sm);
    color: var(--yellow);
    font-weight: 600;
    min-width: 36px;
    opacity: .7;
}
.ts-title {
    font-size: var(--size-sm);
    color: rgba(255,255,255,.35);
    font-style: italic;
}

/* ── Header placeholder text (top-left beside logo) ── */
.header-tagline {
    font-size: var(--size-sm);
    font-weight: 400;
    color: rgba(255,255,255,.4);
    letter-spacing: 1px;
    font-style: italic;
    margin-left: 1.2rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 280px;
}

/* ─── CONTACT PAGE ───────────────────────────────────────── */
#contact {
    min-height: 100vh;
    background: var(--navy); color: var(--white);
    padding: 8rem 4rem;
    display: flex; align-items: center; justify-content: center;
    position: relative; overflow: hidden;
}
#contact::before {
    content: ''; position: absolute;
    right: -200px; top: 50%; transform: translateY(-50%);
    width: 500px; height: 500px;
    border: 80px solid rgba(252,210,2,.05); border-radius: 50%;
    pointer-events: none;
}
#contact .section-title { color: var(--white); font-size: clamp(2.5rem,5vw,4rem); }
#contact .section-title::after { background: var(--yellow); }
#contact .section-text { color: rgba(255,255,255,.55); font-size: var(--size-md); }
.contact-info { margin-top: 3rem; }
.contact-item {
    padding: 1.3rem 0; border-bottom: 1px solid rgba(255,255,255,.07);
    opacity: 0; transform: translateY(14px);
    transition: opacity .55s ease, transform .55s ease;
    display: flex; align-items: center; justify-content: space-between;
    color: rgba(255,255,255,.4);
    font-size: var(--size-sm); font-weight: 600;
    letter-spacing: 1.5px; text-transform: uppercase;
}
.contact-item.visible { opacity: 1; transform: translateY(0); }
.contact-item:nth-child(1){transition-delay:.08s}
.contact-item:nth-child(2){transition-delay:.16s}
.contact-item:nth-child(3){transition-delay:.24s}
.contact-item:nth-child(4){transition-delay:.32s}
.contact-item a {
    color: var(--yellow); text-decoration: none;
    font-size: var(--size-md); font-weight: 500;
    letter-spacing: 0; text-transform: none;
    transition: color .25s ease;
    display: flex; align-items: center; gap: .4rem;
}
.contact-item a::after { content:'↗'; font-size:.85rem; opacity:0; transform:translate(-3px,3px); transition: opacity .25s ease, transform .25s ease; }
.contact-item a:hover { color: var(--white); }
.contact-item a:hover::after { opacity:1; transform:translate(0,0); }

/* ─── DATA PAGE ──────────────────────────────────────────── */
#data-page {
    min-height: 100vh;
    padding: 140px 4rem 6rem;
    background: var(--off-white);
}
.data-header { max-width: 900px; margin: 0 auto 3.5rem; }
.data-grid { max-width: 900px; margin: 0 auto; display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; }
.data-panel {
    background: var(--white); border-radius: 0 10px 10px 0;
    border-left: 4px solid var(--yellow);
    padding: 2.3rem;
    box-shadow: 0 2px 18px rgba(0,46,61,.05);
    opacity: 0; transform: translateY(18px);
    transition: opacity .65s ease, transform .65s ease;
}
.data-panel:nth-child(2){transition-delay:.12s}
.data-panel.visible { opacity:1; transform:translateY(0); }
.data-panel h3 { font-size: clamp(1.2rem,2vw,1.5rem); color:var(--navy); margin-bottom:.3rem; font-weight:700; }
.panel-sub { font-size:var(--size-sm); letter-spacing:2px; text-transform:uppercase; color:var(--text-light); margin-bottom:1.6rem; font-weight:500; }
.upload-zone {
    border: 2px dashed rgba(0,46,61,.14); border-radius:6px;
    padding: 2.3rem 1.3rem; text-align:center; position:relative;
    transition: border-color .25s ease, background .25s ease;
}
.upload-zone:hover,.upload-zone.dragover { border-color:var(--yellow); background:rgba(252,210,2,.03); }
.upload-zone input[type="file"] { position:absolute; inset:0; opacity:0; width:100%; height:100%; cursor:pointer; }
.upload-icon { width:44px; height:44px; margin:0 auto .9rem; background:var(--yellow); border-radius:50%; display:flex; align-items:center; justify-content:center; font-size:1.3rem; }
.upload-zone p { font-size:var(--size-md); color:var(--text-mid); line-height:1.6; }
.upload-zone span { font-weight:600; color:var(--navy); }
.file-types { font-size:var(--size-sm); color:var(--text-light); margin-top:.4rem; letter-spacing:1px; text-transform:uppercase; }
.file-list { margin-top:1.3rem; display:flex; flex-direction:column; gap:.5rem; }
.file-entry { display:flex; align-items:center; justify-content:space-between; padding:.85rem 1rem; background:var(--off-white); border-radius:5px; font-size:var(--size-md); color:var(--navy); font-weight:500; }
.file-entry .file-name { display:flex; align-items:center; gap:.6rem; overflow:hidden; }
.btn-remove { background:none; border:none; color:var(--text-light); font-size:1rem; padding:.2rem .4rem; transition:color .2s; }
.btn-remove:hover { color:#c0392b; }
.download-list { display:flex; flex-direction:column; gap:.7rem; }
.download-entry { display:flex; align-items:center; justify-content:space-between; padding:1rem 1.1rem; background:var(--navy); border-radius:5px; color:white; font-size:var(--size-md); transition:background .2s ease, transform .2s ease; }
.download-entry:hover { background:var(--navy-light); transform:translateX(3px); }
.download-entry .dl-name { display:flex; align-items:center; gap:.6rem; font-weight:500; }
.btn-download { background:var(--yellow); color:var(--navy); border:none; padding:.45rem 1rem; font-family:'DM Sans',sans-serif; font-size:var(--size-sm); font-weight:700; letter-spacing:1.5px; text-transform:uppercase; border-radius:3px; transition:background .2s ease; text-decoration:none; display:inline-block; }
.btn-download:hover { background:var(--yellow-muted); }
.empty-state { text-align:center; padding:2rem; color:var(--text-light); font-size:var(--size-md); font-style:italic; }
.upload-progress { margin-top:.9rem; height:3px; background:rgba(0,46,61,.07); border-radius:3px; overflow:hidden; display:none; }
.upload-progress-bar { height:100%; background:var(--yellow); width:0%; transition:width .3s ease; }
.upload-status { margin-top:.7rem; font-size:var(--size-sm); font-weight:600; letter-spacing:1px; text-transform:uppercase; color:var(--text-light); min-height:1.2em; }
.upload-status.success { color:#27ae60; }
.upload-status.error   { color:#e74c3c; }

/* ─── FOOTER ─────────────────────────────────────────────── */
.site-footer {
    background: var(--navy-deep);
    border-top: 1px solid rgba(252,210,2,0.12);
    padding: 4rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

.footer-col h4 {
    font-size: var(--size-sm);
    font-weight: 700;
    letter-spacing: 2.5px;
    text-transform: uppercase;
    color: var(--yellow);
    margin-bottom: 1.2rem;
    padding-bottom: .6rem;
    border-bottom: 1px solid rgba(252,210,2,0.15);
}

.footer-col p,
.footer-col a {
    font-size: var(--size-sm);
    color: rgba(255,255,255,0.45);
    line-height: 1.8;
    text-decoration: none;
    display: block;
    transition: color .2s ease;
}

.footer-col a:hover { color: rgba(255,255,255,0.85); }

.footer-col .footer-link-row {
    display: flex;
    align-items: center;
    gap: .5rem;
    padding: .35rem 0;
    color: rgba(255,255,255,0.45);
    text-decoration: none;
    font-size: var(--size-sm);
    transition: color .2s ease;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}
.footer-col .footer-link-row:last-child { border-bottom: none; }
.footer-col .footer-link-row:hover { color: var(--yellow); }
.footer-col .footer-link-row .flr-icon { font-size: 1rem; flex-shrink: 0; }

.footer-bottom {
    background: var(--navy-deep);
    border-top: 1px solid rgba(255,255,255,0.06);
    padding: 1.2rem 4rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: .5rem;
}
.footer-bottom span {
    font-size: var(--size-sm);
    color: rgba(255,255,255,0.2);
    letter-spacing: 1px;
}

/* ─── RESPONSIVE ─────────────────────────────────────────── */
@media (max-width: 1024px) {
    .split-section { flex-direction: column; padding-top: 76px; }
    .video-container { position: relative; top: 0; height: 50vh; }
    .content-container { padding: 3.5rem 2.5rem; }
    .content-container::before { display: none; }
    .youtube-section { flex-direction: column; }
    .yt-embed { position: relative; top: 0; height: auto; padding: 2rem 2.5rem; }
    .yt-content { padding: 2.5rem; }
    .data-grid { grid-template-columns: 1fr; }
    .site-footer { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
    header { padding: 1rem 1.5rem; }
    header.scrolled { padding: .8rem 1.5rem; }
    .logo img { width: 42px; height: 42px; }
    .menu-nav a { font-size: 2rem; }
    .menu-close { right: 1.5rem; }
    .content-container { padding: 3rem 1.5rem; }
    #contact { padding: 5rem 1.5rem; }
    .contact-item { flex-direction: column; align-items: flex-start; gap: .35rem; }
    .yt-embed { padding: 1.5rem; }
    .yt-content { padding: 2rem 1.5rem; }
    #data-page { padding: 110px 1.5rem 4rem; }
    .site-footer { grid-template-columns: 1fr; padding: 2.5rem 1.5rem; gap: 2rem; }
    .footer-bottom { padding: 1rem 1.5rem; flex-direction: column; align-items: flex-start; }
    .cursor { display: none; }
    body { cursor: auto; }
    a, button { cursor: pointer !important; }
}