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stylesheet.css
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/* general
--------------------------------------------------------
*/
html {
scroll-behavior: smooth;
}
body{
margin:0;
padding:0;
background: radial-gradient(circle at top, #1b2b4d 0%, #0a1220 28%, #050b14 65%, #02070d 100%);
font-family: "Segoe UI", Helvetica, Arial, sans-serif;
color:#eaf2ff;
line-height:1.6;
overflow-y: scroll;
position: relative;
}
body::before {
content: "";
position: fixed;
inset: 0;
background:
linear-gradient(120deg, rgba(126, 217, 255, 0.06), transparent 30%, rgba(167, 119, 255, 0.08) 70%, transparent),
radial-gradient(circle at 20% 20%, rgba(127, 231, 217, 0.09), transparent 20%),
radial-gradient(circle at 80% 15%, rgba(90, 118, 255, 0.16), transparent 25%);
pointer-events: none;
z-index: 0;
}
h1,h2,h3{margin-top:0;line-height:1.1;}
img {border:0; max-width:100%; display:block;}
a { color: #cfe4ff; text-decoration:none; }
a:hover { text-decoration:none; color:#8ad3ff; }
* { box-sizing: border-box; }
/* page structure
--------------------------------------------------------
*/
header#top,
div#content,
footer#bottom {
position: relative;
z-index: 2;
}
header#top,
div#content {margin:0 auto;width:960px;}
.start-page { width:min(1180px, 92vw); }
div#content{padding:2rem 0 2.5rem 0; overflow:auto;}
#content::after { content:""; display:block; clear:both; }
.start-page { overflow: visible;}
/*two columns */
article {width:730px;float:left;}
aside {float:left;width:230px;}
/* footer */
footer#bottom {
font: normal 0.8em Arial, Helvetica, sans-serif;
color: #d9ecff;
padding:18px 20px 24px 20px;
margin:0 auto;
width:940px;
background: rgba(17, 23, 36, 0.8);
border: 1px solid rgba(255,255,255,0.08);
border-radius: 18px;
box-shadow: 0 20px 45px rgba(0,0,0,0.35);
backdrop-filter: blur(16px);
}
/* the log text */
.logga {font-family: "Segoe UI", sans-serif;font-size: clamp(2rem, 4vw, 3.5rem); font-weight: 800; letter-spacing: -0.04em;}
/* navigation menu
--------------------------------------------------------
*/
nav.navmenu {
font-family: "Segoe UI", arial;
font-weight: 700;
padding: 12px 14px;
background: rgba(10, 16, 26, 0.75);
border: 1px solid rgba(255,255,255,0.08);
backdrop-filter: blur(14px);
box-shadow: 0 18px 38px rgba(0,0,0,0.25);
border-radius: 16px;
margin-top: 1rem;
display:flex;
gap:0.7rem;
flex-wrap:wrap;
}
nav.navmenu a {
padding:10px 16px;
text-decoration:none;
border:1px solid transparent;
color:#e8f3ff;
border-radius:12px;
transition: all 0.25s ease;
position: relative;
overflow: hidden;
}
nav.navmenu a::before {
content: "";
position: absolute;
inset:0;
background: linear-gradient(135deg, rgba(127,231,217,0.18), rgba(138,180,255,0.18));
opacity:0;
transition: opacity 0.25s ease;
}
nav.navmenu a:hover::before,
nav.navmenu a:hover {
opacity: 1;
}
nav.navmenu a:hover {
background: rgba(138, 211, 255, 0.12);
border-color: rgba(138, 211, 255, 0.35);
transform: translateY(-1px);
}
/* figure & figcaption
--------------------------------------------------------
*/
figure {border:1px solid rgba(255,255,255,0.08);padding:0;margin:1em; background: rgba(255,255,255,0.04); border-radius: 20px; overflow:hidden; box-shadow: 0 18px 36px rgba(0,0,0,0.18);}
figcaption {font-style:normal;font-size:0.95rem;padding:0.7rem 1rem; color:#dfeeff; background: rgba(10,12,18,0.4);}
figure.right{margin-right:1em;}
figure.top{margin-top:0;}
/* Misc classes
--------------------------------------------------------
*/
.right {float:right;}
.left {float:left;}
#eltonbild1 {
height: 340px;
width: 100%;
object-fit: cover;
filter: saturate(1.1) contrast(1.06) brightness(0.92);
}
/* highlight current choice in navigation menu
--------------------------------------------------------
*/
body#start a#start-,
body#comments a#comments-,
body#exercises a#exercises-,
body#viewsource a#viewsource- {
background: linear-gradient(135deg, #b4d8ff, #7fe7d9);
border:1px solid rgba(255,255,255,0.25);
color:#062033;
box-shadow: 0 12px 24px rgba(127, 231, 217, 0.18);
}
/* start page additions
--------------------------------------------------------
*/
.start-page article {
width:100%;
float:none;
}
.start-article {
background: rgba(14, 19, 27, 0.7);
border:1px solid rgba(255,255,255,0.08);
border-radius: 30px;
padding: 2rem;
box-shadow:
0 30px 65px rgba(0,0,0,0.35),
inset 0 1px 0 rgba(255,255,255,0.12);
backdrop-filter: blur(16px);
position: relative;
overflow: hidden;
}
.start-article::before {
content: "";
position: absolute;
inset: -30% auto auto -10%;
width: 280px;
height: 280px;
background: radial-gradient(circle, rgba(126, 217, 255, 0.18), transparent 70%);
filter: blur(10px);
pointer-events: none;
}
.hero-panel {
display:grid;
grid-template-columns: 1.4fr 0.9fr;
gap: 2rem;
align-items:center;
position: relative;
z-index: 1;
}
.eyebrow {
margin:0 0 0.75rem;
font-size: 0.75rem;
letter-spacing: 0.18em;
text-transform: uppercase;
color:#8ad3ff;
font-weight: 700;
}
.hero-copy h1 {
font-size: clamp(2.4rem, 4vw, 4.4rem);
margin-bottom: 1rem;
letter-spacing: -0.06em;
text-shadow: 0 0 28px rgba(138, 180, 255, 0.3);
}
.hero-copy p {
font-size: 1.05rem;
color: #dfeeff;
margin-bottom: 1.5rem;
max-width: 62ch;
}
.hero-actions {
display:flex;
gap:1rem;
flex-wrap:wrap;
}
.primary-btn,
.secondary-btn {
display:inline-flex;
align-items:center;
justify-content:center;
padding: 0.9rem 1.4rem;
border-radius: 999px;
font-weight:700;
transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
position: relative;
overflow: hidden;
}
.primary-btn {
background: linear-gradient(135deg, #7fe7d9, #8ab4ff);
color:#0a1020;
box-shadow: 0 18px 30px rgba(127, 231, 217, 0.22);
}
.secondary-btn {
background: rgba(255,255,255,0.04);
border: 1px solid rgba(255,255,255,0.12);
color:#ebf5ff;
}
.primary-btn:hover,
.secondary-btn:hover {
transform: translateY(-2px) scale(1.01);
}
.portrait-figure {
margin:0;
border-radius: 24px;
position: relative;
transform: perspective(1200px) rotateY(-8deg) rotateX(4deg);
box-shadow: 0 24px 40px rgba(0,0,0,0.28);
}
.feature-grid {
display:grid;
grid-template-columns: repeat(3, minmax(0,1fr));
gap:1.2rem;
margin-top:2rem;
position: relative;
z-index: 1;
}
.feature-card {
background: rgba(255,255,255,0.03);
border:1px solid rgba(255,255,255,0.08);
border-radius: 20px;
padding:1.5rem;
box-shadow: inset 0 1px 0 rgba(255,255,255,0.04), 0 12px 24px rgba(0,0,0,0.12);
}
.card-icon {
display:inline-flex;
align-items:center;
justify-content:center;
width: 2.5rem;
height: 2.5rem;
border-radius: 0.8rem;
margin-bottom:1rem;
background: linear-gradient(135deg, rgba(127,231,217,0.22), rgba(138,180,255,0.18));
border:1px solid rgba(138,180,255,0.22);
color:#bbebff;
font-weight:800;
font-size:0.9rem;
}
.feature-card h2 {
font-size: 1.25rem;
margin-bottom: 0.5rem;
}
.feature-card p {
margin:0;
color:#d7e8ff;
}
.ambient-background {
position: fixed;
inset: 0;
pointer-events: none;
z-index: 0;
overflow: hidden;
}
.bg-grid {
position: absolute;
inset: -15% -10% -10% -10%;
background-image:
linear-gradient(rgba(160, 190, 255, 0.08) 1px, transparent 1px),
linear-gradient(90deg, rgba(160, 190, 255, 0.08) 1px, transparent 1px);
background-size: 42px 42px;
mask-image: radial-gradient(circle at center, black 30%, transparent 90%);
transform: perspective(900px) rotateX(62deg) translateY(25%);
opacity: 0.65;
}
.orb {
position: absolute;
border-radius: 50%;
filter: blur(10px);
opacity: 0.08;
transition: opacity 0.9s ease, filter 0.9s ease, transform 0.9s ease;
box-shadow: inset 0 0 25px rgba(255,255,255,0.04), 0 0 28px rgba(138,180,255,0.08);
will-change: transform, opacity;
}
.orb-one { width: 420px; height: 420px; background: radial-gradient(circle at 35% 35%, rgba(126, 217, 255, 0.9), rgba(126, 217, 255, 0.18) 30%, transparent 70%); top: 6%; left: 8%; }
.orb-two { width: 540px; height: 540px; background: radial-gradient(circle at 35% 35%, rgba(166, 125, 255, 0.7), rgba(166, 125, 255, 0.12) 35%, transparent 72%); top: 12%; right: 4%; }
.orb-three { width: 380px; height: 380px; background: radial-gradient(circle at 35% 35%, rgba(127, 231, 217, 0.7), rgba(127, 231, 217, 0.12) 30%, transparent 70%); bottom: 3%; left: 18%; }
.orb-four { width: 480px; height: 480px; background: radial-gradient(circle at 50% 50%, rgba(90, 118, 255, 0.75), rgba(90, 118, 255, 0.1) 35%, transparent 72%); bottom: -9%; right: 18%; }
.reveal {
opacity: 0;
transform: translateY(28px) scale(0.985);
transition: opacity 0.9s ease, transform 0.9s ease;
will-change: opacity, transform;
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal.is-visible {
opacity: 1;
transform: translateY(0) scale(1);
}
.page-transition-overlay {
position: fixed;
inset: 0;
background: #000;
opacity: 0;
pointer-events: none;
z-index: 10001;
transition: opacity 0.7s ease;
}
.page-transition-overlay.is-visible {
opacity: 1;
}
.intro-overlay {
position: fixed;
inset: 0;
background: rgba(0,0,0,0.96);
z-index: 10000;
display: flex;
align-items: center;
justify-content: center;
opacity: 1;
visibility: visible;
transition: opacity 0.7s ease, visibility 0.7s ease;
}
.intro-overlay.hidden {
opacity: 0;
visibility: hidden;
}
.intro-panel {
width: min(620px, 80vw);
background: rgba(11,17,27,0.8);
border: 1px solid rgba(255,255,255,0.08);
border-radius: 24px;
padding: 2rem;
box-shadow: 0 30px 60px rgba(0,0,0,0.45);
backdrop-filter: blur(16px);
text-align: center;
}
.intro-label {
letter-spacing: 0.2em;
text-transform: uppercase;
color: #8ec7ff;
font-size: 0.7rem;
font-weight: 700;
margin-bottom: 1rem;
}
.intro-text {
color: #edf7ff;
font-size: 1.1rem;
font-weight: 700;
margin-bottom: 1.3rem;
}
.loading-bar {
height: 12px;
border-radius: 999px;
overflow: hidden;
background: rgba(255,255,255,0.08);
}
.loading-bar span {
display: block;
width: 0%;
height: 100%;
background: linear-gradient(90deg, #7fe7d9, #8ab4ff, #c5a5ff);
border-radius: inherit;
transition: width 0.12s linear;
}
/* New intro visuals (logo + subtext) */
.intro-logo {
font-size: clamp(2rem, 6vw, 3.6rem);
font-weight: 900;
color: #eaf7ff;
letter-spacing: -0.02em;
text-shadow: 0 0 36px rgba(138,180,255,0.26);
opacity: 0;
transform: translateY(8px) scale(0.98);
animation: introLogoIn 900ms cubic-bezier(.2,.9,.2,1) forwards;
}
.intro-subtext {
margin-top: 0.6rem;
color: #aeddff;
font-weight: 600;
opacity: 0;
transform: translateY(6px);
animation: introSubIn 900ms 350ms cubic-bezier(.2,.9,.2,1) forwards;
}
@keyframes introLogoIn {
to { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes introSubIn {
to { opacity: 1; transform: translateY(0); }
}
.intro-overlay::after {
content: "";
position: absolute;
inset: 0;
background: linear-gradient(180deg, rgba(255,255,255,0.02), transparent 40%);
pointer-events: none;
}
@media (max-width: 820px) {
.hero-panel,
.feature-grid {
grid-template-columns: 1fr;
}
.start-article {
padding: 1.25rem;
}
#eltonbild1 {
height: 260px;
}
.intro-panel {
width: min(90vw, 600px);
padding: 1.25rem;
}
}