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

/* ==============================
   Color System
============================== */
:root {
    --primary: #072f4f;
    --accent: #8a6a3a;
    --text-main: #000000;
    --text-soft: #374151;
    --divider: #d1d5db;

    --font-body: 'Crimson Pro', serif;
    --font-heading: 'Inter', sans-serif;
}


/* ==============================
   Base Typography
============================== */
body{
    font-family: var(--font-body);
    line-height: 1.75;
    color: var(--text-main);
    background-color: #ffffff;
}

h1, h2, h3, nav {
    font-family: var(--font-heading);
}


.container {
    width: 90%;
    max-width: 1100px;
    margin: auto;
}

/* ==============================
   Header
============================== */
header {
    background: var(--primary);
    color: white;
    padding: 1rem 0;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

nav ul {
    display: flex;
    list-style: none;
}

nav ul li {
    margin-left: 22px;
}

nav a {
    color: white;
    text-decoration: none;
    font-weight: 500;
}

/* ==============================
   Mobile Menu
============================== */
.menu-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

@media (max-width: 768px) {
    nav ul {
        display: none;
        flex-direction: column;
        background: var(--primary);
        position: absolute;
        top: 60px;
        right: 0;
        width: 220px;
        padding: 1rem;
    }

    nav ul.active {
        display: flex;
    }

    .menu-toggle {
        display: block;
    }
}

/* ==============================
   Main Content
============================== */
main {
    padding: 2.5rem 0;
    min-height: 70vh;
}

h1 {
    margin-bottom: 20px;
    font-weight: 600;
}

h2 {
    margin-bottom: 15px;
    font-weight: 600;
}

/* Section divider */
.section-divider {
    margin: 40px 0;
    border: none;
    border-top: 1px solid var(--divider);
}

/* ==============================
   Footer
============================== */
footer {
    background: var(--primary);
    color: white;
    text-align: center;
    padding: 1rem 0;
}

/* ==============================
   Gallery
============================== */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-top: 20px;
}

.gallery-grid img {
    width: 100%;
    border-radius: 8px;
}

/* ==============================
   Teaching Section
============================== */

.teaching-header {
    text-align: center;
    margin-bottom: 30px;
}

.quote {
    font-style: italic;
    color: var(--text-soft);
    margin-top: 10px;
}

.quote-author {
    text-align: right;
    font-size: 0.9rem;
    margin-top: 5px;
    color: var(--accent);
}

/* Institution Heading */
.institution h2 {
    color: var(--primary);
    border-left: 4px solid var(--accent);
    padding-left: 12px;
    margin-bottom: 20px;
}

/* Academic List */
.academic-list {
    padding-left: 22px;
    line-height: 1.8;
}

.academic-list li {
    margin-bottom: 28px;
}

/* Course row layout */
.course-row {
    display: flex;
    justify-content: space-between;
    font-weight: 600;
    color: var(--primary);
}

/* Year styling */
.course-year {
    color: var(--text-soft);
    font-weight: 500;
}

/* Meta information */
.course-meta {
    font-size: 0.95rem;
    color: var(--text-soft);
    margin-top: 4px;
}

/* Links */
.academic-list a {
    text-decoration: none;
    color: var(--primary);
}

.research-quote {
    margin: 20px 0 30px 0;
}

.profile-icons {
    margin-top: 15px;
}

.profile-icons a {
    display: inline-block;
    margin: 12px;
}

.profile-icons img {
    max-width: 42px;
    display: block;
}


.profile-header {
    display: flex;
    gap: 40px;
    align-items: center;
}



/* ===============================
   Professional Homepage Layout
================================= */

.profile-hero {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 50px;
    align-items: center;
    margin-bottom: 20px;
}

.profile-photo img {
    width: 100%;
    border-radius: 6px;
}

.profile-info h1 {
    margin-bottom: 8px;
}

.profile-role {
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 15px;
}

.profile-summary {
    max-width: 650px;
}

/* Education layout */
.info-section {
    margin-bottom: 10px;
}

.info-block {
    display: grid;
    grid-template-columns: 120px 1fr;
    margin-bottom: 15px;
}

/* Links */
.info-block a {
    text-decoration: none;
    color: var(--primary);
}

.info-left {
    font-weight: 600;
    color: var(--primary);
}

.info-right {
    color: var(--text-main);
}

/* Contact layout */
.contact-grid {
    display: grid;
    grid-template-columns: 100px 1fr;
    gap: 8px 20px;
}

/* Mobile refinement */
@media (max-width: 768px) {
    .profile-hero {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .info-block {
        grid-template-columns: 1fr;
    }

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

/* ===============================
   Homepage Layout
================================= */



.home-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: start;
}

.home-left h2,
.home-right h2 {
    margin-bottom: 15px;
}

/* Image slider */
.image-slider {
    position: relative;
    width: 100%;
    height: 320px;
    overflow: hidden;
    border-radius: 6px;
}

.image-slider img {
    position: absolute;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 1s ease-in-out;
}

.image-slider img.active {
    opacity: 1;
}

/* ===============================
   Recent Photos Grid (2 per row)
================================= */

.recent-photos {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 45px;
}

.recent-photos img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-radius: 6px;
}


/* Responsive */
@media (max-width: 768px) {
    .home-section {
        grid-template-columns: 1fr;
    }

    .image-slider {
        height: 220px;
    }
}

/* ===============================
 Smaller image slider
================================= */



.image-slider {
    position: relative;
    width: 60%;
    height: 200px;
    margin: 0 auto;   /* centers horizontally */
    overflow: hidden;
    border-radius: 6px;
}



.image-slider img {
    position: absolute;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 0.8s ease-in-out;
}

.image-slider img.active {
    opacity: 1;
}

/* Navigation buttons */
.slider-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.5);
    color: white;
    border: none;
    padding: 6px 10px;
    cursor: pointer;
    font-size: 16px;
    border-radius: 3px;
}

.slider-btn.prev {
    left: 8px;
}

.slider-btn.next {
    right: 8px;
}

/* Mobile */
@media (max-width: 768px) {
    .image-slider {
        width: 100%;
        height: 180px;
        margin: 0 auto;
    }
}



/* ===============================
marquee
================================= */

.marquee-vertical {
    height: 200px;
    overflow: hidden;
    position: relative;
}

.news-list {
    margin: 0;
    padding-left: 20px;   /* needed so numbers have space */
    list-style-type: decimal;   /* show numbers */
    animation: scrollUp 15s linear infinite;
}

.news-list li {
    margin-bottom: 32px;   /* increase space between items */
}

@keyframes scrollUp {
    0% {
        transform: translateY(50%);
    }
    100% {
        transform: translateY(-100%);
    }
}


/* =====================================
   Top Section Layout (60% / 40%)
===================================== */

.home-top {
    display: grid;
    grid-template-columns: 60% 40%;
    gap: 50px;
    align-items: start;
}

.home-top-left h2,
.home-top-right h2 {
    margin-bottom: 15px;
}


/* =====================================
   Bottom Section Layout (40% / 60%)
===================================== */

.home-bottom {
    display: grid;
    grid-template-columns: 40% 60%;
    gap: 50px;
    align-items: start;
}

.home-bottom-left h2,
.home-bottom-right h2 {
    margin-bottom: 15px;
}


/* =====================================
   Mobile Responsive
===================================== */

@media (max-width: 768px) {

    .home-top,
    .home-bottom {
        grid-template-columns: 1fr;
    }

}