:root {
    --main-color: #7a2996;
    --hover-color: #b05fc0;
    --waves-color: #4a2a7a;
    --text-color: #f5f5f5;

    --main-bg-color: #141414;
    --secondary-bg-color: #232323;
    --footer-bg-color: #070707;
    --nav-bg-color: rgba(7, 7, 7, 0.5);

    --shadow: 0 26px 58px 0 rgba(0, 0, 0, 0.22), 0 5px 14px 0 rgba(0, 0, 0, 0.18);
    --default-radius: 15px;
    --glow: 0 0 8px 2px var(--main-color), 0 0 16px 4px var(--hover-color);
    --gradient-bg: linear-gradient(135deg, #141414 0%, #232323 100%);
    --card-gradient: linear-gradient(135deg, #232323 60%, #7b2996d7 100%);
    --glass-bg: rgba(30, 30, 30, 0.7);
}

/* Section fade-in animation */
section {
    margin: 2rem 0;
    padding: 2rem;
    background: var(--glass-bg);
    border-radius: var(--default-radius);
    box-shadow: 0 4px 32px 0 rgba(0,0,0,0.12);
    animation: sectionFadeIn 1.1s cubic-bezier(0.4,0,0.2,1);
    backdrop-filter: blur(2px);
}
@keyframes sectionFadeIn {
    from { opacity: 0; transform: translateY(60px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Custom Selection */
::selection {
    background-color: var(--main-color);
    color: var(--text-color);
}

/* Custom Scrollbar */
::-webkit-scrollbar { width: 12px; }
::-webkit-scrollbar-track {
    background: var(--footer-bg-color);
    border-radius: var(--default-radius);
}
::-webkit-scrollbar-thumb {
    background-color: var(--main-color);
    border-radius: var(--default-radius);
    border: 3px solid var(--footer-bg-color);
}
::-webkit-scrollbar-thumb:hover {
    background-color: var(--hover-color);
    transition: background-color 0.3s ease;
}
main {
    display: flex;
    flex-direction: column;
    padding: 1rem 2rem 4rem 2rem;
}
html {
    scroll-behavior: smooth; /* Smooth scroll (for anchors) */
    color: var(--text-color);
    background: var(--gradient-bg);
    font-family: 'Roboto', sans-serif;
    font-size: 16px;
    line-height: 1.5;
    overflow-x: hidden;
    box-sizing: border-box;
}
body {
    margin: 0;
    padding: 0;
    position: relative;
    animation: fadeInBody 1.2s cubic-bezier(0.4,0,0.2,1);
    overflow-x: hidden;
    /* Overhauled background: smooth gradient + subtle stars pattern */
    background:
        linear-gradient(135deg, #232323 0%, #7a2996 100%),
        repeating-radial-gradient(circle at 25% 20%, rgba(255,255,255,0.07) 1px, transparent 2px 40px),
        repeating-radial-gradient(circle at 70% 80%, rgba(255,255,255,0.05) 1px, transparent 2px 60px);
    background-size: cover, 800px 600px, 1000px 800px;
    background-repeat: no-repeat;
}
@keyframes fadeInBody {
    from { opacity: 0; }
    to { opacity: 1; }
}

ul {
    list-style-type: none;
    padding: 0;
}
/* Add glowing effect to nav on hover */
nav>ul>li>a:hover {
    text-shadow: 0 0 8px var(--main-color), 0 0 16px var(--hover-color);
}

.links {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-flow: row wrap;
}
footer {
    background-color: var(--footer-bg-color);
    color: var(--text-color);
    text-align: center;
    padding: 1.5rem;
    border-radius: 0 0 5px 5px;
    animation: fadeInFooter 1.2s cubic-bezier(0.4,0,0.2,1);
}
@keyframes fadeInFooter {
    from { opacity: 0; transform: translateY(40px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Buttons */
.cv-download {
    background-color: var(--main-color);
    padding: 10px 20px;
    margin: 4px 2px;
    font-size: 1.05rem;
    border-radius: 25px;
    transition: background-color 0.3s ease;
}
.cv-download:hover {
    background-color: var(--hover-color);
    color: var(--text-color);
    transition: background-color 0.3s ease;
}
button, .link-button {
    background-color: var(--main-color);
    box-shadow: var(--shadow);
    border: none;
    color: var(--text-color);
    padding: 10px 20px;
    margin: 0.5rem;
    font-size: 1.05rem;
    cursor: pointer;
    border-radius: var(--default-radius);
    transition: background-color 0.3s, box-shadow 0.3s, transform 0.2s;
    position: relative;
    overflow: hidden;
}
button:hover, .link-button:hover {
    background-color: var(--hover-color);
    color: var(--text-color);
    box-shadow: var(--glow);
    transform: translateY(-2px) scale(1.04);
}
button:active, .link-button:active {
    transform: scale(0.98);
}

/* Navigation */
nav {
    padding: 1em;
	/* position: fixed;
    width: 100vw;
	top: 0;
    z-index: 1; */
    background-color: var(--nav-bg-color);
}
nav>ul {
    display: flex;
    justify-content: space-around;
    align-items: center;
    flex-flow: row wrap;
    margin: 0;
    padding: 0;
}
nav>ul>li {
    padding: 0.5em;
}
nav>ul>li>a>img {
    width: 2em;
    height: 2em;
    border-radius: 50%;
    transition: transform 0.3s ease;
}
nav>ul>li>a>img:hover {
    transform: scale(1.1);
    transition: transform 0.3s ease;
}

/* Span */
span {
    color: var(--main-color);
    font-weight: bold;
}

/* Link */
a {
    color: var(--text-color);
    text-decoration: none;
}
a:hover {
    color: var(--hover-color);
    transition: color 0.3s ease;
}
.underline { text-decoration: underline; }

.wave_blob {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 60vw;
    height: 60vw;
    max-width: 800px;
    max-height: 800px;
    min-width: 300px;
    min-height: 300px;
    transform: translate(-50%, -50%);
    z-index: -1;
    background-image: url('../assets/wave_blob.svg');
    background-repeat: no-repeat;
    background-size: contain;
    pointer-events: none;
    overflow: hidden;
    animation: blobPulse 6s ease-in-out infinite alternate;
}
@keyframes blobPulse {
    0% {
        transform: translate(-50%, -50%) scale(1);
        filter: brightness(1) blur(0px);
    }
    30% {
        transform: translate(-50%, -50%) scale(1.08);
        filter: brightness(1.2) blur(1px);
    }
    60% {
        transform: translate(-50%, -50%) scale(0.92);
        filter: brightness(0.9) blur(2px);
    }
    100% {
        transform: translate(-50%, -50%) scale(1);
        filter: brightness(1) blur(0px);
    }
}
.wave_down {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 500px;
    z-index: -1;
    background-image: url('../assets/wave_down.svg');
    background-repeat: no-repeat;
    background-size: cover;
    pointer-events: none;
}

/* Presenation */
#presentation {
    display: flex;
    justify-content: space-around;
    align-items: center;
    text-align: justify;
}
#presentation>div { max-width: 50%; }
#presentation>img {
    max-width: 200px;
    border-radius: var(--default-radius);
    margin: 100px;
    box-shadow: var(--shadow);
    animation: floatAvatar 3.5s ease-in-out infinite alternate;
    filter: drop-shadow(0 0 16px var(--main-color));
    transition: filter 0.3s;
}
#presentation>img:hover { filter: drop-shadow(0 0 32px var(--hover-color)); }
@keyframes floatAvatar {
    0% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-18px) scale(1.04); }
    100% { transform: translateY(0) scale(1); }
}
@media screen and (max-width: 768px) {
    #presentation {
        flex-direction: column-reverse;
        justify-content: center;
        align-items: center;
        text-align: justify;
        margin: 0 auto;
    }
    #presentation>div { max-width: 100%; }
    #presentation>img { margin: 20px; }
    
}

/* Center div */
.div-center {
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Skills */
.skills-grid {
    display: flex;
    justify-content: space-around;
    align-items: center;
    flex-flow: row wrap;
}
.skills-card {
    margin: 1rem;
    padding: 1rem;
    background: var(--card-gradient);
    box-shadow: var(--shadow);
    border-radius: var(--default-radius);
    width: 5rem;
    transform: scale(1);
    transition: transform 0.3s cubic-bezier(0.4,0,0.2,1), box-shadow 0.3s;
    text-align: center;
    position: relative;
    overflow: hidden;
    animation: cardFadeIn 0.8s cubic-bezier(0.4,0,0.2,1);
}
.skills-card:hover {
    transform: scale(1.08) rotate(-2deg);
    box-shadow: var(--glow);
    z-index: 2;
}
.skills-card img {
    width: 100%;
    max-width: 100%;
    border-radius: var(--default-radius);
    filter: drop-shadow(0 0 8px var(--main-color));
    transition: filter 0.3s;
}
.skills-card:hover img {
    filter: drop-shadow(0 0 16px var(--hover-color));
}
@keyframes cardFadeIn {
    from { opacity: 0; transform: scale(0.8) translateY(40px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

/* Wakatime */
.wakatime-stats {
    border-radius: var(--default-radius);
    max-width: 50%;
    transition: max-width 0.5s;
    box-shadow: var(--shadow);
}
.wakatime-stats:hover {
    max-width: 100%;
    transition: max-width 0.5s;
}

/* Articles */
.explore-github {
    text-align: center;
    font-size: 1.5rem;
    margin-top: 2rem;
    color: var(--hover-color);
}
.projects-grid {
    display: flex;
    justify-content: space-around;
    align-items: center;
    flex-flow: row wrap;
    gap: 1rem;
}
article {
    margin: 1rem 0;
    background: var(--card-gradient);
    box-shadow: var(--shadow);
    border-radius: var(--default-radius);
    width: 20rem;
    transition: transform 0.3s cubic-bezier(0.4,0,0.2,1), box-shadow 0.3s;
    text-align: justify;
    position: relative;
    overflow: hidden;
    animation: cardFadeIn 0.9s cubic-bezier(0.4,0,0.2,1);
}
article:hover {
    transform: scale(1.06) rotate(1deg);
    box-shadow: var(--glow);
    z-index: 2;
}
article>p, article>header {
    padding: 1rem;
}
article h2 {
    text-align: center;
    letter-spacing: 1px;
    text-shadow: 0 2px 8px var(--main-color);
}
article img {
    width: 100%;
    max-width: 100%;
    border-radius: var(--default-radius);
    filter: drop-shadow(0 0 8px var(--main-color));
    transition: filter 0.3s;
}
article:hover img {
    filter: drop-shadow(0 0 16px var(--hover-color));
}
article>footer {
    display: flex;
    justify-content: space-around;
    align-items: center;
    padding: 1rem;
}
article .project-tags {
    font-size: 1.2rem;
    color: var(--hover-color);
    text-align: center;
    padding: 0 1rem 1rem 1rem;
}

/* Video frames */
iframe {
    width: 100%;
    max-width: 100%;
    border-radius: var(--default-radius);
    border: none;
}

/* Forms */
#contact-popup {
    display: none;
    flex-flow: column;
    align-items: center;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1;
}

form {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-flow: column;
    background-color: var(--secondary-bg-color);
    box-shadow: var(--shadow);
    border-radius: var(--default-radius);
    padding: 1rem;
    margin: 1rem;
    max-width: 100%;
    animation: formDisplay 0.5s;
    text-align: center;
}
label {
    margin: 0.5rem;
    display: flex;
    align-items: center;
    position: relative;
}
input, textarea {
    padding: 0.5rem;
    margin: 0 0.8rem;
    background-color: var(--main-bg-color);
    color: var(--text-color);
    border-radius: var(--default-radius);
    border: none;
    transform: scale(1);
    transition: transform 0.3s ease, margin 0.3s ease;
    font-family: 'Roboto', sans-serif;
    font-size: 14px;
    font-weight: bold;
}
textarea {
    min-width: 450px;
}
input:hover, textarea:hover {
    transform: scale(1.05);
    margin: 0 1rem;
    transition: transform 0.3s ease, margin 0.3s ease;
}
input:focus, textarea:focus {
    outline: none;
    border: 2px solid var(--main-color);
}
form #close {
    align-self: flex-end;
    justify-self: flex-end;
    transform: scale(0.8);
}
form h3 {
    color: var(--hover-color);
    font-size: 0.9rem;
}
::-webkit-input-placeholder {
    font-family: 'Roboto', sans-serif;
    font-size: 14px;
    font-weight: bold;
}
@media (max-width: 600px) {
    form {
        padding: 0.5rem;
        margin: 0.5rem;
        width: 70vw;
        max-width: 100vw;
        box-sizing: border-box;
    }
    form h2 { font-size: 1.2rem; }
    label {
        flex-direction: column;
        align-items: center;
        width: 70%;
    }
    input, textarea {
        width: 100%;
        min-width: 0;
        font-size: 15px;
        margin: 0.5rem 0;
    }
    textarea {
        min-width: 0;
        min-height: 120px;
        resize: vertical;
    }
}

/* Form Animation */
@keyframes formDisplay {
    0% {
        opacity: 0;
        transform: scale(0.8);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

.notification {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: var(--main-color);
    color: var(--text-color);
    padding: 1rem 2rem;
    border-radius: var(--default-radius);
    box-shadow: var(--shadow);
    opacity: 0;
    transform: translateY(100%);
    animation: slideIn 0.5s forwards, fadeOut 0.5s 2.5s forwards;
    z-index: 1000;
}
@keyframes slideIn {
    from { transform: translateY(100%); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.timeline {
    position: relative;
    width: 80vw;
    max-width: 44em;
    min-height: 25em;
    margin: 0 auto;
    z-index: 1;
}
.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    width: 0.5em;
    height: 100%;
    background: linear-gradient(135deg, var(--main-color) 0%, var(--hover-color) 100%);
    border-radius: 0.4em;
    z-index: 0;
    box-shadow: 0 0 1.5em 0.25em var(--main-color);
    animation: timelinePulse 2.5s infinite alternate;
}
.timeline-bubble {
    position: relative;
    width: 16em;
    padding: 1.5em 1.25em;
    background: var(--glass-bg);
    border-radius: 1.9em;
    box-shadow: 0 0.5em 2em rgba(122,41,150,0.18);
    margin-bottom: 3em;
    z-index: 1;
    transition: transform 0.3s, box-shadow 0.3s;
    animation: bubblePop 1s cubic-bezier(0.4,0,0.2,1);
    opacity: 0;
    animation-fill-mode: forwards;
}
.timeline-bubble.left {
    transform: translateX(-100%);
    text-align: right;
    border-top-right-radius: 2.5em;
    border-bottom-right-radius: 2.5em;
}
.timeline-bubble.right {
    left: 59%;
    transform: translateX(0);
    text-align: left;
    border-top-left-radius: 2.5em;
    border-bottom-left-radius: 2.5em;
}
.timeline-bubble::after {
    content: '';
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 1.4em;
    height: 1.4em;
    background: var(--main-color);
    border-radius: 50%;
    box-shadow: 0 0 0 0.38em var(--hover-color);
    z-index: 2;
    animation: bubblePulse 2s infinite alternate;
}
.timeline-bubble.left::after { right: -2.4em; }
.timeline-bubble.right::after { left: -2.4em; }
.bubble-content h3 {
    margin: 0 0 0.5em 0;
    color: var(--main-color);
    font-size: 1.25em;
    letter-spacing: 0.06em;
    text-shadow: 0 0.13em 0.5em var(--hover-color);
}
@media (max-width: 900px) {
    .timeline-bubble.left, .timeline-bubble.right {
        left: 6em;
        width: 70%;
        padding: 1em 0.5em;
        text-align: left;
        margin-left: 0;
        margin-right: 0;
        border-radius: 1.9em;
    }
    
    .timeline-bubble.left::after, .timeline-bubble.right::after {
        left: -2.4em;
        right: auto;
    }
    .timeline::before {
        left: 2em;
        width: 0.3em;
    }
}
@keyframes timelinePulse {
    0% { box-shadow: 0 0 1.5em 0.25em var(--main-color); }
    100% { box-shadow: 0 0 3em 0.75em var(--hover-color); }
}
@keyframes bubblePop {
    0% { opacity: 0; transform: scale(0.7) translateY(2.5em); }
    60% { opacity: 1; transform: scale(1.08) translateY(-0.5em); }
    100% { opacity: 1; transform: scale(1) translateY(0); }
}
@keyframes bubblePulse {
    0% { box-shadow: 0 0 0 0.38em var(--hover-color); background: var(--main-color); }
    100% { box-shadow: 0 0 0 0.75em var(--main-color); background: var(--hover-color); }
}