* {
    box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
    margin: 0;
    padding: 0;
    background-repeat: no-repeat;
    background-attachment: fixed;
    background-size: 100% 100%;
    overflow-x: hidden;
}

a {
    color: white;
    font-size: clamp(15px, 3vw, 19px);
    word-break: break-word;
}

p, li {
    color: white;
}

.wrapper {
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    padding: 8px 4%;
}

.logo-img {
    height: clamp(45px, 8vw, 70px);
    width: clamp(45px, 8vw, 70px);
    border-radius: 50%;
    flex-shrink: 0;
}

.navigation {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    flex: 1;
    min-height: auto;
}

.navigation nav {
    display: flex;
    gap: clamp(16px, 4vw, 32px);
    font-size: clamp(20px, 5vw, 50px);
    flex-wrap: wrap;
    justify-content: flex-end;
}

img {
    border-radius: 15px;
    max-width: 100%;
    height: auto;
}

.socials {
    border-radius: 50%;
    height: clamp(36px, 8vw, 50px);
    width: clamp(36px, 8vw, 50px);
    margin: 5px;
}

.hero-section {
    min-height: 60vh;
    width: 100%;
    text-align: center;
    color: aliceblue;
    padding: 4vh 4% 2vh;
}

.hero-greeting {
    font-size: clamp(18px, 4vw, 28px);
    margin: 0 0 8px;
}

.hero-name {
    font-size: clamp(28px, 8vw, 50px);
    margin: 0;
    line-height: 1.2;
}

.hero-role {
    font-size: clamp(16px, 3.5vw, 20px);
}

.hero-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: stretch;
    gap: 24px;
    margin-top: 24px;
}

.profile-pic-wrap {
    height: clamp(180px, 40vw, 300px);
    width: clamp(180px, 40vw, 300px);
    margin: 0 auto;
    flex-shrink: 0;
}

.profile-pic-wrap img {
    height: 100%;
    width: 100%;
    border-radius: 50%;
    object-fit: cover;
}

.intro-text,
.social-block {
    text-align: left;
    font-size: clamp(16px, 2.2vw, 20px);
    font-style: oblique;
    width: 100%;
    max-width: 320px;
    padding: 10px;
    margin: 0 auto;
}

.social-links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
}

.cv-btn {
    height: 44px;
    width: 140px;
    margin-top: 10px;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    font-weight: 600;
}

.view {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    text-align: center;
}

.longblock,
.shortblock {
    animation: appear linear;
    animation-timeline: view();
    animation-range: entry 0% cover 40%;
    width: 100%;
    min-height: 180px;
    height: auto;
    margin: 3% auto;
    padding: 5%;
    text-align: left;
    background: transparent;
    border: 2px solid silver;
    backdrop-filter: blur(10px);
    box-shadow: 0 0 10px black;
    font-size: clamp(15px, 2.2vw, 19px);
    color: white;
    overflow-wrap: break-word;
}

.shortblock.cert-photo-block {
    padding: 4%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.shortblock.cert-photo-block img {
    width: 100%;
    height: auto;
}

.cert-view {
    display: block;
}

.cert-collapsible {
    width: 100%;
    margin: 3% auto;
    background: transparent;
    border: 2px solid silver;
    backdrop-filter: blur(10px);
    box-shadow: 0 0 10px black;
    overflow: hidden;
}

.cert-summary {
    all: unset;
    box-sizing: border-box;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 5%;
    width: 100%;
    color: white;
    user-select: none;
}

.cert-summary h2 {
    margin: 0;
}

.cert-summary::after {
    content: '+';
    font-size: clamp(20px, 4vw, 28px);
    line-height: 1;
    flex-shrink: 0;
    margin-left: 12px;
    transition: transform 0.3s ease;
}

.cert-summary[aria-expanded="true"]::after {
    transform: rotate(45deg);
}

/* Grid-rows trick: animates 0fr -> 1fr instead of relying on height:auto,
   which is what keeps this smooth and cheap on mobile GPUs. */
.cert-body {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.cert-body.open {
    grid-template-rows: 1fr;
}

.cert-body-inner {
    overflow: hidden;
    min-height: 0;
}

.cert-content {
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
    padding: 0 5% 5%;
}

.cert-body-inner .cert-content:first-child {
    padding-top: 5%;
}

.cert-content .longblock,
.cert-content .shortblock {
    width: 100%;
    margin: 0;
    padding: 0;
    border: none;
    box-shadow: none;
    backdrop-filter: none;
    background: transparent;
    animation: none;
    min-height: unset;
}

.cert-content .shortblock.cert-photo-block {
    display: flex;
    align-items: center;
    justify-content: center;
}

@media (min-width: 768px) {
    .cert-content .longblock {
        width: 60%;
    }

    .cert-content .shortblock {
        width: 35%;
    }
}

footer, .site-footer {
    text-align: center;
    min-height: 10vh;
    backdrop-filter: blur(10px);
    padding: 12px 4%;
    font-size: clamp(13px, 2vw, 16px);
}

.marquee-wrap {
    color: white;
    font-size: clamp(14px, 2.5vw, 18px);
    overflow: hidden;
    white-space: nowrap;
    padding: 8px 0;
}

@media (min-width: 768px) {
    .hero-content {
        flex-wrap: nowrap;
        align-items: flex-start;
        text-align: left;
    }

    .intro-text,
    .social-block {
        width: 30%;
        max-width: none;
    }

    .view {
        text-align: left;
    }

    .longblock {
        width: 50%;
    }

    .shortblock {
        width: 30%;
    }
}

@media (min-width: 1200px) {
    .longblock,
    .shortblock {
        font-size: larger;
    }
}

@keyframes appear {
    from {
        opacity: 0;
        scale: 0.5;
    }

    to {
        opacity: 1;
        scale: 1;
    }
}

@keyframes loading {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.animation {
    animation: loading 1s linear;
}