/* =========================================================
   RESEARCH PROJECTS PAGE
========================================================= */
/* =========================================================
   GLOBAL
========================================================= */

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

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    padding: 0;

    font-family: Arial, Helvetica, sans-serif;

    background: #f4f7fa;
    color: #101722;

    line-height: 1.5;

    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

button,
a {
    -webkit-tap-highlight-color: transparent;
}


/* =========================================================
   HEADER
   ========================================================= */

.site-header {
    width: 100%;

    background: #07131f;

    border-bottom: 1px solid #1d3042;
}

.nav-container {
    height: 47px;

    display: flex;

    align-items: center;

    justify-content: space-between;
}


/* LOGO */

.logo {
    color: #ffffff;

    font-size: 21px;

    font-weight: 700;

    letter-spacing: 3px;

    white-space: nowrap;
}

.logo span {
    color: #12aee8;
}


/* NAVIGATION */

.navigation {
    display: flex;

    align-items: center;

    gap: 27px;
}

.navigation a {
    color: #8fa0b0;

    font-size: 15px;

    transition:
        color 0.2s ease;
}

.navigation a:hover {
    color: #ffffff;
}

.navigation a.active {
    color: #12aee8;
}


/* =========================================================
   MOBILE MENU BUTTON
========================================================= */

.menu-toggle {
    display: none;

    width: 44px;
    height: 44px;

    padding: 8px;

    border: 1px solid #294057;

    border-radius: 10px;

    background: #07131f;

    cursor: pointer;

    align-items: center;
    justify-content: center;

    flex-direction: column;

    gap: 5px;

    z-index: 200;
}

.menu-toggle span {
    display: block;

    width: 23px;
    height: 2px;

    background: #ffffff;

    border-radius: 2px;

    transition:
        transform 0.25s ease,
        opacity 0.25s ease;
}


/* =========================================================
   the above code is global in all the pages
========================================================= */

/* =========================================================
   the above code is global in all the pages
========================================================= */


/* =========================================================
   HERO
========================================================= */
/* =========================================================
   HERO ACTION BUTTONS
========================================================= */

.hero-actions {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-top: 32px;
    flex-wrap: wrap;
}


/* ---------------------------------------------------------
   BASE BUTTON
--------------------------------------------------------- */

.hero-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 18px;

    min-height: 48px;
    padding: 0 22px;

    text-decoration: none;

    font-family: inherit;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 1.5px;

    border: 1px solid #d7dde3;

    transition:
        background-color 0.25s ease,
        color 0.25s ease,
        border-color 0.25s ease,
        transform 0.25s ease,
        box-shadow 0.25s ease;
}


/* ---------------------------------------------------------
   PRIMARY BUTTON
--------------------------------------------------------- */

.hero-btn-primary {
    background: #101827;
    color: #ffffff;
    border-color: #101827;
}

.hero-btn-primary span {
    font-size: 16px;
    line-height: 1;

    transition: transform 0.25s ease;
}

.hero-btn-primary:hover {
    background: #087ea4;
    border-color: #087ea4;

    transform: translateY(-2px);

    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.10);
}

.hero-btn-primary:hover span {
    transform: translateX(4px);
}


/* ---------------------------------------------------------
   SECONDARY BUTTON
--------------------------------------------------------- */

.hero-btn-secondary {
    background: #ffffff;
    color: #101827;
    border-color: #cfd7df;
}

.hero-btn-secondary span {
    font-size: 16px;
    line-height: 1;

    transition: transform 0.25s ease;
}

.hero-btn-secondary:hover {
    color: #087ea4;
    border-color: #087ea4;

    transform: translateY(-2px);

    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.06);
}

.hero-btn-secondary:hover span {
    transform: translateX(4px);
}


/* =========================================================
   COLLABORATION LINK
========================================================= */

.collaboration-link {
    margin-top: 24px;
}


/* ---------------------------------------------------------
   LINK
--------------------------------------------------------- */

.collaboration-link a {
    display: inline-flex;
    align-items: center;
    gap: 10px;

    text-decoration: none;

    color: #087ea4;

    font-size: 10px;
    font-weight: 700;
    letter-spacing: 2px;

    transition: color 0.25s ease;
}


/* ---------------------------------------------------------
   BLUE STATUS DOT
--------------------------------------------------------- */

.collaboration-dot {
    width: 7px;
    height: 7px;

    display: inline-block;

    background: #087ea4;
    border-radius: 50%;

    box-shadow: 0 0 0 4px rgba(8, 126, 164, 0.08);

    animation: collaborationPulse 2s infinite;
}


/* ---------------------------------------------------------
   TEXT
--------------------------------------------------------- */

.collaboration-text {
    position: relative;
}


/* Animated underline */

.collaboration-text::after {
    content: "";

    position: absolute;

    left: 0;
    bottom: -5px;

    width: 0;
    height: 1px;

    background: #087ea4;

    transition: width 0.3s ease;
}


/* ---------------------------------------------------------
   ARROW
--------------------------------------------------------- */

.collaboration-arrow {
    font-size: 16px;
    line-height: 1;

    transition: transform 0.25s ease;
}


/* ---------------------------------------------------------
   HOVER
--------------------------------------------------------- */

.collaboration-link a:hover {
    color: #101827;
}

.collaboration-link a:hover .collaboration-text::after {
    width: 100%;
}

.collaboration-link a:hover .collaboration-arrow {
    transform: translateX(5px);
}


/* =========================================================
   PULSE ANIMATION
========================================================= */

@keyframes collaborationPulse {

    0% {
        box-shadow: 0 0 0 0 rgba(8, 126, 164, 0.25);
    }

    70% {
        box-shadow: 0 0 0 6px rgba(8, 126, 164, 0);
    }

    100% {
        box-shadow: 0 0 0 0 rgba(8, 126, 164, 0);
    }

}


/* =========================================================
   MOBILE
========================================================= */

@media (max-width: 600px) {

    .hero-actions {
        flex-direction: column;
        align-items: stretch;
        width: 100%;
    }

    .hero-btn {
        width: 100%;
    }

    .collaboration-link {
        margin-top: 22px;
    }

    .collaboration-link a {
        font-size: 9px;
        letter-spacing: 1.5px;
        line-height: 1.6;
    }

}

/* EYEBROW */

.eyebrow {
    margin: 0 0 18px;

    color: #08a9e4;

    font-size: 9px;

    font-weight: 700;

    letter-spacing: 4px;
}

.eyebrow span {
    color: #8293a4;

    margin: 0 4px;
}


/* HERO TITLE */

.hero h1 {
    margin: 0;

    color: #101722;

    font-size: clamp(58px, 7vw, 82px);

    font-weight: 700;

    line-height: 0.87;

    letter-spacing: -5px;
}

.hero h1 span {
    color: #12aee8;
}


/* DESCRIPTION */

.hero-description {
    max-width: 640px;

    margin-top: 27px;

    color: #617286;

    font-size: 13px;

    line-height: 1.65;
}


/* =========================================================
   HERO BUTTONS
========================================================= */

.hero-buttons {
    display: flex;

    align-items: center;

    gap: 9px;

    margin-top: 23px;
}

.hero-buttons a {
    display: inline-flex;

    align-items: center;

    justify-content: center;

    height: 35px;

    padding: 0 16px;

    background: #ffffff;

    border: 1px solid #cbd7e1;

    color: #172434;

    font-size: 8px;

    font-weight: 700;

    transition:
        background 0.2s ease,
        border-color 0.2s ease,
        color 0.2s ease;
}

.hero-buttons a:hover {
    border-color: #12aee8;

    color: #078ab9;
}

.hero-buttons .primary {
    background: #07131f;

    border-color: #07131f;

    color: #ffffff;
}

.hero-buttons .primary:hover {
    background: #12aee8;

    border-color: #12aee8;

    color: #ffffff;
}


/* =========================================================
   SKILL TAGS
========================================================= */

.skill-tags {
    display: flex;

    flex-wrap: wrap;

    gap: 9px;

    margin-top: 27px;

    margin-bottom: 0;

    padding: 0;
}

.skill-tags span {
    display: inline-flex;

    align-items: center;

    justify-content: center;

    height: 25px;

    padding: 0 12px;

    background: #ffffff;

    border: 2px solid #d2dde6;

    color: #147da4;

    font-size: 10px;

    font-weight: 700;
}


/* =========================================================
   WHAT I BRING

   IMPORTANT:
   This section begins directly after the hero.
   No giant white spacer.
========================================================= */

.what-i-bring {
    width: min(1200px, calc(100% - 104px));

    margin: 0 auto;

    padding-top: 17px;

    padding-bottom: 20px;
}


/* HEADING */

.what-i-bring .eyebrow {
    margin-bottom: 14px;
}

.what-i-bring h2 {
    margin: 0;

    color: #101722;

    font-size: clamp(42px, 5vw, 7px);

    font-weight: 700;

    line-height: 0.98;

    letter-spacing: -3px;
}


/* DESCRIPTION */

.what-i-bring > p {
    max-width: 610px;

    margin-top: 17px;

    color: #617286;

    font-size: 12px;

    line-height: 1.6;
}


/* =========================================================
   OPEN TO VOLUNTEER / COLLABORATION
========================================================= */

.collaboration-section {
    position: relative;

    width: 100%;

    padding: 120px 0;

    background: #f7f9fb;

    border-top: 1px solid #e4e8ec;
    border-bottom: 1px solid #e4e8ec;

    overflow: hidden;
}


/* =========================================================
   CONTAINER
========================================================= */

.collaboration-container {
    width: min(1180px, calc(100% - 80px));

    margin: 0 auto;
}


/* =========================================================
   SECTION LABEL
========================================================= */

.collaboration-label {
    display: flex;
    align-items: center;
    gap: 12px;

    margin-bottom: 28px;

    color: #087ea4;

    font-size: 10px;
    font-weight: 700;

    letter-spacing: 2.5px;
    text-transform: uppercase;
}


.collaboration-label-line {
    display: block;

    width: 34px;
    height: 1px;

    background: #087ea4;
}


/* =========================================================
   HEADING
========================================================= */

.collaboration-heading {
    max-width: 760px;

    margin-bottom: 0px;
}


.collaboration-heading h2 {
    margin: 0;

    color: #101827;

    font-size: clamp(42px, 5vw, 72px);

    font-weight: 600;

    line-height: 1.05;

    letter-spacing: -2.5px;
}


.collaboration-heading h2 span {
    display: block;

    color: #087ea4;
}


.collaboration-heading p {
    max-width: 650px;

    margin-top: 28px;

    color: #5d6875;

    font-size: 16px;

    line-height: 1.8;
}


/* =========================================================
   COLLABORATION GRID
========================================================= */

.collaboration-grid {
    display: grid;

    grid-template-columns: repeat(2, 1fr);

    gap: 10px;
}


/* =========================================================
   COLLABORATION CARD
========================================================= */

.collaboration-card {
    position: relative;

    display: flex;

    min-height: 150px;

    padding: 20px;

    background: #ffffff;

    border: 5px solid #dfe5ea;

    transition:
        transform 0.3s ease,
        border-color 0.3s ease,
        box-shadow 0.3s ease;

    overflow: hidden;
}


/* =========================================================
   CARD HOVER
========================================================= */

.collaboration-card:hover {
    transform: translateY(-5px);

    border-color: #087ea4;

    box-shadow: 0 18px 40px rgba(16, 24, 39, 0.08);
}


/* =========================================================
   CARD NUMBER
========================================================= */

.collaboration-card-number {
    flex-shrink: 0;

    margin-right: 25px;

    color: #b7c0c9;

    font-family: "Courier New", monospace;

    font-size: 12px;

    font-weight: 700;

    letter-spacing: 1px;
}


/* =========================================================
   CARD CONTENT
========================================================= */

.collaboration-card-content {
    padding-right: 25px;
}


.collaboration-card-content h3 {
    margin: 0 0 14px;

    color: #101827;

    font-size: 22px;

    font-weight: 600;

    letter-spacing: -0.4px;
}


.collaboration-card-content p {
    max-width: 420px;

    margin: 0;

    color: #687482;

    font-size: 14px;

    line-height: 1.7;
}


/* =========================================================
   TAGS
========================================================= */

.collaboration-tags {
    display: flex;

    flex-wrap: wrap;

    gap: 7px;

    margin-top: 22px;
}


.collaboration-tags span {
    display: inline-flex;

    align-items: center;

    padding: 6px 9px;

    background: #f3f7f9;

    border: 1px solid #e1e9ed;

    color: #087ea4;

    font-size: 9px;

    font-weight: 700;

    letter-spacing: 0.8px;

    text-transform: uppercase;
}


/* =========================================================
   CARD ARROW
========================================================= */

.collaboration-card-arrow {
    position: absolute;

    right: 25px;
    bottom: 22px;

    color: #b5c0c8;

    font-size: 22px;

    transition:
        color 0.25s ease,
        transform 0.25s ease;
}


.collaboration-card:hover .collaboration-card-arrow {
    color: #087ea4;

    transform: translateX(5px);
}


/* =========================================================
   FOOTER / AVAILABILITY
========================================================= */

.collaboration-footer {
    display: flex;

    align-items: center;

    justify-content: space-between;

    gap: 30px;

    margin-top: 15px;

    padding-top: 30px;

    border-top: 1px solid #dfe5ea;
}


/* =========================================================
   AVAILABILITY
========================================================= */

.availability-status {
    display: flex;

    align-items: center;

    gap: 11px;

    color: #596572;

    font-size: 10px;

    font-weight: 700;

    letter-spacing: 1.7px;
}


.availability-dot {
    width: 8px;
    height: 8px;

    display: block;

    background: #087ea4;

    border-radius: 150%;

    box-shadow:
        0 0 0 4px rgba(8, 126, 164, 0.10);

    animation: availabilityPulse 2s infinite;
}



/* =========================================================
   CONNECT email github
========================================================= */

.connect {
    width: min(1200px, calc(100% - 104px));

    margin: 0 auto;

    padding-top: 70px;

    padding-bottom: 10px;

    border-top: 1px solid #d2dde6;
}



.connect p:not(.eyebrow) {
    max-width: 600px;

    margin-top: 17px;

    color: #617286;

    font-size: 12px;
}

.connect-buttons {
    display: flex;

    gap: 9px;

    margin-top: 23px;
}

.connect-buttons a {
    display: inline-flex;

    align-items: center;

    justify-content: center;

    height: 35px;

    padding: 0 17px;

    background: #07131f;

    color: #ffffff;

    font-size: 10px;

    font-weight: 700;
}

.connect-buttons a:hover {
    background: #12aee8;
}



/* =========================================================
   CTA
========================================================= */

.collaboration-cta {
    display: inline-flex;

    align-items: center;

    gap: 20px;

    padding: 15px 22px;

    background: #101827;

    border: 1px solid #101827;

    color: #ffffff;

    text-decoration: none;

    font-size: 10px;

    font-weight: 700;

    letter-spacing: 1.5px;

    transition:
        background-color 0.25s ease,
        border-color 0.25s ease,
        transform 0.25s ease;
}


.collaboration-cta-arrow {
    font-size: 17px;

    transition: transform 0.25s ease;
}


.collaboration-cta:hover {
    background: #087ea4;

    border-color: #087ea4;

    transform: translateY(-2px);
}


.collaboration-cta:hover .collaboration-cta-arrow {
    transform: translateX(5px);
}


/* =========================================================
   PULSE
========================================================= */

@keyframes availabilityPulse {

    0% {
        box-shadow:
            0 0 0 0 rgba(8, 126, 164, 0.25);
    }

    70% {
        box-shadow:
            0 0 0 7px rgba(8, 126, 164, 0);
    }

    100% {
        box-shadow:
            0 0 0 0 rgba(8, 126, 164, 0);
    }

}


/* =========================================================
   TABLET
========================================================= */

@media (max-width: 850px) {

    .collaboration-section {
        padding: 90px 0;
    }

    .collaboration-container {
        width: min(100% - 50px, 700px);
    }

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

    .collaboration-heading h2 {
        font-size: 52px;
    }

    .collaboration-footer {
        align-items: flex-start;

        flex-direction: column;
    }

}


/* =========================================================
   MOBILE
========================================================= */

@media (max-width: 600px) {

    .collaboration-section {
        padding: 75px 0;
    }

    .collaboration-container {
        width: calc(100% - 36px);
    }

    .collaboration-heading {
        margin-bottom: 45px;
    }

    .collaboration-heading h2 {
        font-size: 40px;

        letter-spacing: -1.5px;
    }

    .collaboration-heading p {
        font-size: 14px;
    }

    .collaboration-card {
        min-height: auto;

        padding: 25px;
    }

    .collaboration-card-number {
        margin-right: 17px;
    }

    .collaboration-card-content h3 {
        font-size: 19px;
    }

    .collaboration-card-content p {
        font-size: 13px;
    }

    .collaboration-footer {
        margin-top: 40px;
    }

    .availability-status {
        align-items: flex-start;

        font-size: 9px;

        line-height: 1.6;
    }

    .collaboration-cta {
        width: 100%;

        justify-content: space-between;
    }

}



/* =========================================================
   FEATURED PROJECTS
========================================================= */

.featured-projects {
    width: min(1200px, calc(100% - 104px));

    margin: 0 auto;

    padding-top: 70px;

    padding-bottom: 75px;

    border-top: 1px solid #d2dde6;
}

.featured-projects .eyebrow {
    margin-bottom: 14px;
}

.featured-projects h2 {
    margin: 0;

    color: #101722;

    font-size: clamp(32px, 5vw, 47px);

    line-height: 0.98;

    letter-spacing: -3px;
}


/* PROJECT GRID */

.projects-grid {
    display: grid;

    grid-template-columns:
        repeat(3, 1fr);

    gap: 11px;

    margin-top: 32px;
}

.project-card {
    padding: 27px 22px;

    background: #ffffff;

    border: 1px solid #d2dde6;

    transition:
        transform 0.2s ease,
        border-color 0.2s ease;
}

.project-card:hover {
    transform: translateY(-3px);

    border-color: #12aee8;
}

.project-card .number {
    color: #08a9e4;

    font-size: 8px;

    font-weight: 700;

    letter-spacing: 2px;
}

.project-card h3 {
    margin-top: 18px;

    color: #101722;

    font-size: 20px;

    line-height: 1;
}

.project-card h3 span {
    color: #12aee8;
}

.project-card p {
    margin-top: 13px;

    color: #617286;

    font-size: 10px;

    line-height: 1.6;
}

.project-card .link {
    display: inline-block;

    margin-top: 20px;

    color: #078bb9;

    font-size: 8px;

    font-weight: 700;

    letter-spacing: 0.5px;
}

.project-card .link:hover {
    color: #12aee8;
}


/* =========================================================
   FOOTER
========================================================= */

.site-footer {
    background: #07131f;

    color: #75889a;

    font-size: 8px;
}

.footer-container {
    min-height: 58px;

    display: flex;

    align-items: center;

    justify-content: space-between;
}


/* =========================================================
   IMPORTANT GAP PROTECTION
========================================================= */

/*
   These rules make sure no accidental margin/padding
   creates the large white gap you had before.
*/

.hero {
    margin-bottom: 0 !important;
}

.hero-content {
    margin-bottom: 0 !important;
}

.skill-tags {
    margin-bottom: 0 !important;
}

.hero + .what-i-bring {
    margin-top: 0 !important;
}

.what-i-bring {
    margin-top: 0 !important;
}


/* =========================================================
   TABLET
========================================================= */

@media (max-width: 900px) {

    .container,
    .hero,
    .what-i-bring,
    .featured-projects,
    .connect {
        width: calc(100% - 60px);
    }

    .hero h1 {
        font-size: 65px;
    }

    .features-grid,
    .projects-grid {
        grid-template-columns:
            repeat(2, 1fr);
    }
}


/* =========================================================
   MOBILE
========================================================= */

@media (max-width: 650px) {

    .container,
    .hero,
    .what-i-bring,
    .featured-projects,
    .connect {
        width: calc(100% - 40px);
    }


    /* HEADER */

    .nav-container {
        min-height: 60px;
    }

    .navigation {
        display: none;
    }


    /* HERO */

    .hero {
        padding-top: 60px;
        padding-bottom: 0 !important;
    }

    .hero h1 {
        font-size: 52px;

        letter-spacing: -4px;

        line-height: 0.9;
    }

    .hero-description {
        font-size: 12px;
    }


    /* BUTTONS */

    .hero-buttons {
        flex-wrap: wrap;
    }


    /* SKILLS */

    .skill-tags {
        margin-top: 23px;
    }


    /* WHAT I BRING */

    .what-i-bring {
        padding-top: 25px;

        padding-bottom: 55px;
    }

    .what-i-bring h2 {
        font-size: 42px;

        letter-spacing: -3px;
    }


    /* CARDS */

    .features-grid,
    .projects-grid {
        grid-template-columns: 1fr;

        gap: 10px;
    }


    /* PROJECTS */

    .featured-projects {
        padding-top: 55px;

        padding-bottom: 60px;
    }


    /* CONNECT */

    .connect {
        padding-top: 55px;

        padding-bottom: 60px;
    }


    /* FOOTER */

    .footer-container {
        min-height: 75px;

        flex-direction: column;

        align-items: flex-start;

        justify-content: center;

        gap: 5px;
    }
}


/* =========================================================
   VERY SMALL PHONES
========================================================= */

@media (max-width: 420px) {

    .hero h1 {
        font-size: 45px;

        letter-spacing: -3px;
    }

    .what-i-bring h2,
    .featured-projects h2,
    .connect h2 {
        font-size: 38px;

        letter-spacing: -2.5px;
    }

    .hero-buttons {
        flex-direction: column;

        align-items: stretch;
    }

    .hero-buttons a {
        width: 100%;

        text-align: center;
    }

    .connect-buttons {
        flex-direction: column;

        align-items: stretch;
    }

    .connect-buttons a {
        width: 100%;

        text-align: center;
    }
}



/* =========================================================
 publicatons
 
========================================================= */


.publication-section {
    padding: 0px 0;
}

.publication-box {
    padding: 105px;

    background: #eaf2f6;

    display: flex;

    align-items: center;

    justify-content: space-between;

    gap: 40px;
}

.publication-box h2 {
    font-size: 48px;

    line-height: 1;

    letter-spacing: -3px;

    margin-bottom: 15px;
}

.publication-box p:not(.eyebrow) {
    color: #687787;
}

.publication-button {
    flex-shrink: 0;

    padding: 15px 22px;

    background: #06111f;

    color: #ffffff;

    font-size: 11px;

    font-weight: 700;

    transition:
        background 0.25s ease,
        color 0.25s ease;
}

.publication-button:hover {
    background: #13b4ed;

    color: #03101a;
}

.publication-button span {
    margin-left: 20px;

    font-size: 17px;
}