:root {
    --mainColor: #eaeaea;
    --secondaryColor: #fff;

    --borderColor: #d9d9d9;

    --mainText: #1a1a1a;
    --secondaryText: #4b5156;

    --themeDotBorder: #24292e;

    --previewBg: rgb(251, 249, 243);
    --previewShadow: #f0ead6;

    --buttonColor: #17a2b8;

    /* extended palette */
    --accent: #17a2b8;
    --accentSoft: rgba(23, 162, 184, 0.12);
    --cardBg: #ffffff;
    --shadow: rgba(17, 24, 39, 0.10);
    --shadowStrong: rgba(17, 24, 39, 0.16);
}

* {
    box-sizing: border-box;
}

html,
body {
    padding: 0;
    margin: 0;
    scroll-behavior: smooth;
}

body {
    background-color: var(--mainColor);
    -webkit-font-smoothing: antialiased;
}

body * {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

h1,
h2,
h3,
h4,
h5,
h6,
strong {
    color: var(--mainText);
    font-family: "Russo One", sans-serif;
    font-weight: 500;
    letter-spacing: 0.2px;
}

p,
li,
span,
label,
input,
textarea {
    color: var(--secondaryText);
    font-family: "Roboto Mono", monospace;
    line-height: 1.6;
}

a {
    text-decoration: none;
    color: var(--accent);
}

a:hover {
    text-decoration: underline;
}

ul {
    list-style: none;
}

h1 { font-size: 56px; }
h2 { font-size: 36px; }
h3 { font-size: 28px; }
h4 { font-size: 22px; }
h5 { font-size: 20px; }
h6 { font-size: 16px; }

/* ---------- Layout / sections ---------- */

.s1 {
    background-color: var(--mainColor);
    border-bottom: 1px solid var(--borderColor);
    overflow: auto;
}

.s2 {
    background-color: var(--secondaryColor);
    border-bottom: 1px solid var(--borderColor);
    overflow: auto;
}

.main-container {
    width: 1100px;
    max-width: 100%;
    margin: 0 auto;
    padding-left: 20px;
    padding-right: 20px;
}

.section-heading {
    text-align: center;
    padding-top: 70px;
    margin-bottom: 10px;
    position: relative;
}

.section-heading::after {
    content: "";
    display: block;
    width: 54px;
    height: 4px;
    border-radius: 4px;
    background-color: var(--accent);
    margin: 14px auto 0;
}

.section-subtitle {
    text-align: center;
    max-width: 620px;
    margin: 0 auto 40px;
    font-size: 14px;
    opacity: 0.85;
}

/* ---------- Hero ---------- */

.greeting-wrapper {
    display: grid;
    text-align: center;
    align-content: center;
    min-height: 9em;
    padding-top: 30px;
}

.greeting-wrapper h1 {
    margin-bottom: 6px;
}

.greeting-wrapper .role-line {
    font-family: "Roboto Mono", monospace;
    color: var(--accent);
    font-size: 16px;
    letter-spacing: 1px;
}

.intro-wrapper {
    background-color: var(--secondaryColor);
    border: 1px solid var(--borderColor);
    border-radius: 10px 10px 0 0;
    box-shadow: 0 18px 40px -20px var(--shadowStrong);

    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-areas:
        "nav-wrapper nav-wrapper"
        "left-column right-column";
}

.nav-wrapper {
    border-radius: 10px 10px 0 0;
    grid-area: nav-wrapper;
    border-bottom: 1px solid var(--borderColor);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--mainColor);
}

.dots-wrapper {
    display: flex;
    padding: 12px;
}

#dot-1 { background-color: #fc6058; }
#dot-2 { background-color: #fec02f; }
#dot-3 { background-color: #2aca3e; }

.browser-dot {
    height: 14px;
    width: 14px;
    border-radius: 50%;
    margin: 4px;
    box-shadow: -1px 1px 3px -1px rgba(0, 0, 0, 0.5);
}

.browser-actions {
    padding-right: 16px;
    font-family: "Roboto Mono", monospace;
    font-size: 12px;
    color: var(--secondaryText);
    opacity: 0.7;
}

.left-column {
    grid-area: left-column;
    padding: 50px 20px;
}

#profile_pic {
    display: block;
    margin: 0 auto 18px;
    height: 200px;
    width: 200px;
    object-fit: cover;
    border-radius: 12px;
    border: 3px solid var(--accent);
    box-shadow: 0 10px 30px -12px var(--shadowStrong);
}

.left-column h5 {
    text-align: center;
    margin: 6px 0;
    font-size: 15px;
}

#theme-options-wrapper {
    display: flex;
    justify-content: center;
}

.theme-dot {
    height: 30px;
    width: 30px;
    border-radius: 50%;
    margin: 6px;
    border: 2px solid var(--themeDotBorder);
    box-shadow: -1px 1px 3px -1px rgba(0, 0, 0, 0.6);
    cursor: pointer;
}

.theme-dot:hover {
    transform: scale(1.15);
}

#light-mode { background-color: #fff; }
#blue-mode { background-color: #192734; }
#green-mode { background-color: #78866b; }
#purple-mode { background-color: #7e4c74; }

#settings-note {
    font-size: 12px;
    font-style: italic;
    text-align: center;
    opacity: 0.75;
}

.right-column {
    grid-area: right-column;
    display: grid;
    align-content: center;
    padding: 50px 20px;
}

#preview-shadow {
    background-color: var(--previewShadow);
    max-width: 320px;
    padding-left: 30px;
    padding-top: 30px;
    margin: 0 auto;
}

#preview {
    width: 320px;
    border: 1.5px solid var(--accent);
    background-color: var(--previewBg);
    padding: 18px;
    position: relative;
}

#preview h3 {
    margin-top: 0;
}

.corner {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    border: 1.5px solid var(--accent);
    background-color: var(--secondaryColor);
    position: absolute;
}

#corner-tl { top: -5px; left: -5px; }
#corner-tr { top: -5px; right: -5px; }
#corner-br { bottom: -5px; right: -5px; }
#corner-bl { bottom: -5px; left: -5px; }

/* ---------- Stats strip ---------- */

.stats-wrapper {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    max-width: 720px;
    margin: 34px auto 60px;
}

.stat {
    background-color: var(--cardBg);
    border: 1px solid var(--borderColor);
    border-radius: 10px;
    padding: 22px 12px;
    text-align: center;
    box-shadow: 0 10px 26px -18px var(--shadowStrong);
}

.stat .stat-num {
    display: block;
    font-family: "Russo One", sans-serif;
    color: var(--accent);
    font-size: 30px;
    line-height: 1.1;
}

.stat .stat-label {
    font-size: 12px;
    letter-spacing: 0.5px;
}

/* ---------- About ---------- */

.about-wrapper {
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    padding-bottom: 70px;
    padding-top: 10px;
    gap: 70px;
    align-items: center;
}

.about-me p {
    margin-bottom: 16px;
}

.social-links {
    display: grid;
    align-content: center;
    text-align: center;
    background-color: var(--cardBg);
    border: 1px solid var(--borderColor);
    border-radius: 12px;
    padding: 26px;
    box-shadow: 0 14px 34px -22px var(--shadowStrong);
}

#social_img {
    width: 78%;
    margin: 0 auto 14px;
}

.social-title {
    margin: 0;
    font-size: 15px;
}

.social-title a {
    font-family: "Roboto Mono", monospace;
    font-weight: 500;
}

/* ---------- Skills ---------- */

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    padding-bottom: 70px;
}

.skill-card {
    background-color: var(--cardBg);
    border: 1px solid var(--borderColor);
    border-radius: 12px;
    padding: 22px;
    box-shadow: 0 12px 30px -22px var(--shadowStrong);
}

.skill-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px -22px var(--shadowStrong);
}

.skill-card h4 {
    margin: 0 0 14px;
    font-size: 17px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.skill-card h4 .skill-icon {
    color: var(--accent);
    font-size: 18px;
}

.tag-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag {
    display: inline-block;
    font-family: "Roboto Mono", monospace;
    font-size: 12px;
    color: var(--accent);
    background-color: var(--accentSoft);
    border: 1px solid var(--accentSoft);
    border-radius: 999px;
    padding: 4px 11px;
    line-height: 1.4;
}

/* ---------- Experience timeline ---------- */

.experience-wrapper {
    max-width: 840px;
    margin: 0 auto;
    padding-bottom: 70px;
    position: relative;
}

.experience-wrapper::before {
    content: "";
    position: absolute;
    left: 7px;
    top: 6px;
    bottom: 90px;
    width: 2px;
    background: linear-gradient(var(--accent), transparent);
}

.experience {
    position: relative;
    padding-left: 40px;
    margin-bottom: 34px;
}

.experience::before {
    content: "";
    position: absolute;
    left: 0;
    top: 6px;
    height: 16px;
    width: 16px;
    border-radius: 50%;
    background-color: var(--accent);
    border: 3px solid var(--secondaryColor);
    box-shadow: 0 0 0 2px var(--accent);
}

.experience.intern::before {
    background-color: var(--secondaryColor);
}

.exp-card {
    background-color: var(--cardBg);
    border: 1px solid var(--borderColor);
    border-radius: 12px;
    padding: 22px 24px;
    box-shadow: 0 14px 34px -24px var(--shadowStrong);
}

.exp-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 4px;
    margin-bottom: 4px;
}

.exp-header h4 {
    margin: 0;
}

.exp-company {
    font-size: 16px;
    font-weight: bold;
    color: var(--accent);
}

.exp-date {
    font-size: 13px;
    color: var(--secondaryText);
    display: block;
    margin-bottom: 14px;
    opacity: 0.85;
}

.exp-details {
    list-style-type: none;
    margin: 0 0 16px;
    padding: 0;
}

.exp-details li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 9px;
    line-height: 1.55;
    font-size: 14px;
}

.exp-details li::before {
    content: "▹";
    position: absolute;
    left: 0;
    color: var(--accent);
}

.exp-skills {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
    margin-top: 6px;
}

/* Open-source highlight box inside Camunda card */
.oss-highlight {
    margin-top: 16px;
    padding: 16px;
    border: 1px dashed var(--accent);
    border-radius: 10px;
    background-color: var(--accentSoft);
}

.oss-highlight .oss-title {
    margin: 0 0 6px;
    font-size: 14px;
    color: var(--mainText);
}

.oss-highlight p {
    font-size: 13px;
    margin: 0 0 12px;
}

.pr-links {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.pr-chip {
    font-family: "Roboto Mono", monospace;
    font-size: 12px;
    color: var(--accent);
    border: 1px solid var(--accent);
    border-radius: 8px;
    padding: 6px 12px;
    transition: background-color 0.2s ease, color 0.2s ease;
}

.pr-chip:hover {
    background-color: var(--accent);
    color: var(--secondaryColor);
    text-decoration: none;
}

/* ---------- Blogs ---------- */

.post-wrapper {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 340px));
    gap: 22px;
    justify-content: center;
    padding-bottom: 70px;
}

.post {
    background-color: var(--cardBg);
    border: 1px solid var(--borderColor);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 16px 40px -26px var(--shadowStrong);
}

.post:hover {
    transform: translateY(-5px);
    box-shadow: 0 24px 48px -24px var(--shadowStrong);
}

.post-preview {
    padding: 20px;
}

.post-tag {
    font-family: "Roboto Mono", monospace;
    font-size: 11px;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    color: var(--accent);
}

.post-title {
    color: var(--mainText);
    margin: 8px 0 10px;
    font-size: 17px;
    line-height: 1.35;
}

.post-intro {
    font-size: 13.5px;
    line-height: 1.55;
    margin-bottom: 16px;
}

/* ---------- Education & Achievements ---------- */

.edu-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    max-width: 900px;
    margin: 0 auto;
    padding-bottom: 70px;
}

.info-card {
    background-color: var(--cardBg);
    border: 1px solid var(--borderColor);
    border-radius: 12px;
    padding: 26px;
    box-shadow: 0 14px 34px -24px var(--shadowStrong);
}

.info-card h4 {
    margin: 0 0 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.info-card .degree {
    color: var(--mainText);
    font-size: 15px;
    font-family: "Roboto Mono", monospace;
    font-weight: 500;
    margin: 0 0 4px;
}

.info-card .muted {
    font-size: 13px;
    opacity: 0.85;
    margin: 0 0 4px;
}

.achv-list {
    margin: 0;
    padding: 0;
}

.achv-list li {
    position: relative;
    padding-left: 24px;
    margin-bottom: 12px;
    font-size: 13.5px;
    line-height: 1.5;
}

.achv-list li::before {
    content: "🏆";
    position: absolute;
    left: 0;
    top: 0;
}

/* ---------- Contact form ---------- */

#contact-form {
    display: block;
    max-width: 620px;
    margin: 0 auto 70px;
    border: 1px solid var(--borderColor);
    padding: 26px;
    border-radius: 12px;
    background-color: var(--cardBg);
    box-shadow: 0 16px 40px -26px var(--shadowStrong);
}

#contact-form label {
    line-height: 2.7em;
    font-size: 14px;
}

#contact-form textarea {
    min-height: 120px;
    font-size: 14px;
    resize: vertical;
}

.input-field {
    width: 100%;
    padding: 11px 12px;
    background-color: var(--secondaryColor);
    border-radius: 8px;
    border: 1px solid var(--borderColor);
    font-size: 14px;
}

.input-field:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accentSoft);
}

#submit-btn {
    margin-top: 18px;
    width: 100%;
    padding: 13px;
    color: #fff;
    background-color: var(--accent);
    border: none;
    border-radius: 8px;
    font-family: "Russo One", sans-serif;
    font-size: 15px;
    letter-spacing: 0.5px;
    cursor: pointer;
}

#submit-btn:hover {
    filter: brightness(1.08);
}

/* ---------- Footer ---------- */

.footer {
    display: flex;
    justify-content: center;
    flex-direction: column;
    align-items: center;
    padding: 40px 0;
}

.footer h6 {
    margin-bottom: 10px;
}

.footer-icons {
    width: 100%;
    text-align: center;
    padding: 6px 0;
}

.footer-icons img,
.footer-icons svg {
    margin: 6px;
    height: 28px;
    width: 28px;
    opacity: 0.85;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.footer-icons a:hover img,
.footer-icons a:hover svg {
    transform: translateY(-3px);
    opacity: 1;
}

/* ---------- Responsive ---------- */

@media screen and (max-width: 1120px) {
    .main-container {
        width: 100%;
    }
}

@media screen and (max-width: 860px) {
    h1 { font-size: 42px; }
    h2 { font-size: 30px; }
    h3 { font-size: 24px; }

    .about-wrapper {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .edu-grid {
        grid-template-columns: 1fr;
    }

    .intro-wrapper {
        grid-template-columns: 1fr;
        grid-template-areas:
            "nav-wrapper"
            "left-column"
            "right-column";
    }

    .right-column {
        justify-content: center;
    }
}

@media screen and (max-width: 560px) {
    .stats-wrapper {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .exp-header {
        flex-direction: column;
    }

    #preview-shadow,
    #preview {
        max-width: 280px;
        width: 100%;
    }
}