/* ---------------------------------------------------
   Global Variables – Light Mode (Cream / White)
--------------------------------------------------- */
:root {
    --bg: #ffffff;
    --bg-alt: #f6f2ea;
    --text: #1a1a1a;
    --text-light: #555;
    --accent: #c9b38c;
    --accent-soft: rgba(201, 179, 140, 0.15);
    --card-bg: #ffffff;
    --nav-bg: rgba(255, 255, 255, 0.8);
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    --radius: 14px;
    --transition: 0.3s ease;
    --hero-overlay: rgba(0,0,0,0.30);
    --hero-overlay-bottom: rgba(0,0,0,0.05);
}
/* ---------------------------------------------------
   Dark Mode
--------------------------------------------------- */
.dark-mode {
    --bg: #0d0d0d;
    --bg-alt: #1a1a1a;
    --text: #f0f0f0;
    --text-light: #bbb;
    --accent-soft: rgba(201, 179, 140, 0.2);
    --card-bg: #141414;
    --nav-bg: rgba(20, 20, 20, 0.8);
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

/* ---------------------------------------------------
   Global
--------------------------------------------------- */
body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: Arial, sans-serif;
    transition: background var(--transition), color var(--transition);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

img {
    max-width: 100%;
    border-radius: var(--radius);
}

/* Logo */
.site-logo {
    height: 50px;
    max-width: 250px;
    object-fit: contain;
    border-radius: 0; /* keep logo shape */
    margin-right: 18px;
}

/* Skip link (accessibility) */
.skip-link {
    position: absolute;
    left: -9999px;
    top: auto;
    width: 1px;
    height: 1px;
    overflow: hidden;
}
.skip-link:focus {
    position: fixed;
    left: 16px;
    top: 16px;
    width: auto;
    height: auto;
    background: var(--accent);
    color: #fff;
    padding: 8px 12px;
    border-radius: 8px;
    z-index: 9999;
}

/* ---------------------------------------------------
   Navigation
--------------------------------------------------- */
header {
    position: sticky;
    top: 0;
    backdrop-filter: blur(12px);
    background: var(--nav-bg);
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 20;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

/* Mobile menu toggle */
.menu-toggle {
    display: none;
    background: transparent;
    border: none;
    font-size: 1.25rem;
    cursor: pointer;
    padding: 8px;
}

/* small screens: hide nav and show toggle */
@media (max-width: 900px) {
    header {
        padding: 12px 20px;
    }
    .menu-toggle {
        display: block;
        color: var(--text);
    }
    nav {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--nav-bg);
        padding: 18px 20px;
        box-shadow: var(--shadow);
        flex-direction: column;
        gap: 12px;
    }
    nav a {
        margin-left: 0;
        display: block;
        padding: 8px 0;
        font-size: 1rem;
    }
    /* when body has nav-open, show nav */
    body.nav-open nav {
        display: flex;
    }
}

nav a {
    margin-left: 24px;
    text-decoration: none;
    color: var(--text);
    font-weight: 600;
    transition: var(--transition);
}

nav a:hover {
    color: var(--accent);
}

/* Active nav link — keep highlighted when on that page */
nav a.active,
nav a.active:hover {
    color: var(--accent);
    font-weight: 800;
    text-decoration: underline;
    text-underline-offset: 4px;
}

/* Dark Mode Button */
.dark-toggle {
    margin-left: 30px;
    padding: 8px 18px;
    background: var(--accent);
    border-radius: var(--radius);
    color: #fff;
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

.dark-toggle:hover {
    opacity: 0.85;
}

/* ---------------------------------------------------
   Hero
--------------------------------------------------- */
#main {
    background-image:
        linear-gradient(180deg, var(--hero-overlay), var(--hero-overlay-bottom)),
        url('assets/home-bg.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

#main-1 {
    background-image:
        linear-gradient(180deg, var(--hero-overlay), var(--hero-overlay-bottom)),
        url('assets/tech-bg.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

#main-2 {
    background-image:
        linear-gradient(180deg, var(--hero-overlay), var(--hero-overlay-bottom)),
        url('assets/1 (5).png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

#main-3 {
    background-image:
        linear-gradient(180deg, var(--hero-overlay), var(--hero-overlay-bottom)),
        url('assets/53.avif');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

#main-4 {
    background-image:
        linear-gradient(180deg, var(--hero-overlay), var(--hero-overlay-bottom)),
        url('assets/cont-bg.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    justify-content: flex-start;
}

.hero {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    min-height: 60vh;
    padding: 120px 40px;
}

.hero h1 {
    font-size: 4rem;
    max-width: 900px;
    margin: 0 auto;
    font-weight: 700;
    line-height: 1.2;
    color: #fff;
}

.hero p {
    margin-top: 20px;
    max-width: 650px;
    margin-left: auto;
    margin-right: auto;
    color: cornsilk;
    font-size: 2rem;
}

@media (max-width: 700px) {
    .hero {
        padding: 80px 20px;
        background-position: center top;
    }
    .hero h1 {
        font-size: 2rem;
    }
    .site-logo {
        height: 40px;
        margin-right: 10px;
    }
    nav a {
        margin-left: 12px;
        font-size: 0.95rem;
    }
}

/* ---------------------------------------------------
   Careers split layout
   Left column: 25% of viewport width, right column: remaining space
--------------------------------------------------- */
.careers-split {
    display: flex;
    gap: 32px;
    align-items: flex-start;
    max-width: 1400px;
    margin: 24px auto;
    padding: 0 40px;
}

/* ---------------------------------------------------
   Updates grid and panel (right side newsletter)
--------------------------------------------------- */
.updates-grid {
    display: grid;
    /* left content and a larger right panel */
    grid-template-columns: 1fr 480px;
    gap: 40px;
    /* stretch the right panel to match left column total height */
    align-items: stretch;
    max-width: 1400px;
    margin: 24px auto;
}
.updates-block {
    margin: 20; /* use gap on parent to space blocks */
}
.updates-block h2 {
    margin-top: 0;
    margin-bottom: 0px;
}
.updates-main {
    /* left column: make explicit three stacked rows for Research, Events, Articles */
    display: grid;
    grid-template-rows: repeat(3, auto);
    gap: 24px;
}
.updates-panel {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 20px;
    border: 1px solid var(--accent-soft);
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    align-content: stretch;
    /* remove forced 100% height: container's align-items:stretch will make it match left column */
}
.updates-panel h2 {
    margin-top: 0;
}
.updates-form label {
    display: block;
    margin-top: 12px;
    font-weight: 600;
}
.updates-form input {
    width: 100%;
    padding: 10px;
    margin-top: 6px;
    border-radius: 8px;
    border: 1px solid rgba(0,0,0,0.08);
    background: var(--bg-alt);
}
.updates-form button {
    margin-top: 12px;
    padding: 10px 14px;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 10px;
    cursor: pointer;
}
.updates-panel .recent-updates {
    margin-top: auto; /* push recent links to bottom if panel is taller */
}
.recent-updates ul {
    margin: 12px 0 0 18px;
}
.recent-updates li {
    margin-bottom: 8px;
}

@media (max-width: 900px) {
    .updates-grid {
        grid-template-columns: 1fr;
        padding: 0 20px;
    }
    .updates-panel {
        order: 2;
    }
}
.careers-left {
    flex: 0 0 25vw; /* 25% of viewport width */
    min-width: 240px;
    max-width: 420px;
}
.careers-right {
    flex: 1 1 0;
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}
.collab-list {
    list-style: disc;
    margin-left: 18px;
    color: var(--text-light);
}
.collab-form-wrap {
    margin-top: 20px;
    background: var(--card-bg);
    padding: 18px;
    border-radius: var(--radius);
    border: 1px solid var(--accent-soft);
}
.collab-form label {
    display: block;
    margin-top: 12px;
    font-weight: 600;
}
.collab-form input,
.collab-form textarea {
    width: 95%;
    padding: 10px;
    margin-top: 6px;
    border-radius: 8px;
    border: 1px solid rgba(0,0,0,0.08);
    background: var(--bg-alt);
}
.collab-form button {
    margin-top: 12px;
    padding: 10px 16px;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 10px;
    cursor: pointer;
}

@media (max-width: 900px) {
    .careers-split {
        flex-direction: column;
        padding: 0 20px;
    }
    .careers-left {
        width: 100%;
        flex: none;
        order: 2; /* place form after listings if preferred; change to 1 to keep on top */
    }
    .careers-right {
        order: 1;
    }
}

/* Dark mode hero overlay tweak */
.dark-mode {
    --hero-overlay: rgba(0,0,0,0.55);
    --hero-overlay-bottom: rgba(0,0,0,0.25);
}

.hero p {
    margin-top: 20px;
    max-width: 650px;
    margin-left: auto;
    margin-right: auto;
    color: white;
    font-size: 1.5rem;
}

/* ---------------------------------------------------
   Section
--------------------------------------------------- */
.section {
    padding: 80px 40px;
    max-width: 1200px;
    margin: auto;
}

.section h2 {
    font-size: 2rem;
    margin-bottom: 40px;
    text-align: center;
}

/* ---------------------------------------------------
   Cards
--------------------------------------------------- */
.card {
    font-size: 1.3rem;
    background: var(--card-bg);
    padding: 40px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--accent-soft);
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12);
}

/* Job card specific styles on Careers page */
.job-card {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.job-card .job-meta {
    color: var(--text-light);
    font-size: 0.95rem;
}
.job-card .job-summary {
    margin: 0;
    color: var(--text);
}
.job-actions {
    margin-top: 8px;
}
.job-actions .btn,
.job-actions a.btn {
    display: inline-block;
    padding: 8px 12px;
    background: var(--accent);
    color: #fff;
    border-radius: 8px;
    text-decoration: none;
}

/* Apply form on job detail page */
.apply-form label {
    display: block;
    margin-top: 12px;
    font-weight: 600;
}
.apply-form input[type="text"],
.apply-form input[type="email"],
.apply-form textarea,
.apply-form input[type="file"] {
    width: 100%;
    padding: 10px;
    margin-top: 6px;
    border-radius: 8px;
    border: 1px solid rgba(0,0,0,0.08);
    background: var(--bg-alt);
}
.apply-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin-top: 14px;
}
.apply-actions .btn {
    padding: 10px 16px;
}

/* Grid Layout */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

/* ---------------------------------------------------
   Contact Form
--------------------------------------------------- */
form {
    max-width: 600px;
    margin: auto;
}

input,
textarea {
    width: 100%;
    padding: 14px;
    margin-top: 16px;
    background: var(--bg-alt);
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: var(--radius);
    color: var(--text);
    transition: var(--transition);
}

input:focus,
textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-soft);
}

/* Button */
button {
    padding: 14px 24px;
    margin-top: 20px;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: var(--radius);
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
}

button:hover {
    opacity: 0.85;
}

/* ---------------------------------------------------
   Pre-Footer
--------------------------------------------------- */
.pre-footer {
    background: var(--bg-alt);
    padding: 40px;
    margin-top: 60px;
}
.pre-footer-container {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr 1fr;
    gap: 32px;
}
.pre-footer-logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    width: 150px;
}
.footer-logo {
    height: 200px;
    max-width: 300px;
    object-fit: contain;
    margin-bottom: 12px;
}
.pre-footer-logo p {
    font-size: 0.95rem;
    color: var(--text-light);
}
.pre-footer-col h3 {
    margin-top: 0;
    font-size: 1rem;
}
.pre-footer-col p {
    margin: 8px 0;
    font-size: 0.9rem;
    color: var(--text-light);
}
.pre-footer-col p a {
    color: var(--accent);
    text-decoration: none;
}
.pre-footer-col p a:hover {
    text-decoration: underline;
}
.social-links,
.footer-links {
    list-style: none;
    margin: 0;
    padding: 0;
}
.social-links li,
.footer-links li {
    margin-bottom: 6px;
}
.social-links a,
.footer-links a {
    color: var(--accent);
    text-decoration: none;
    font-size: 0.95rem;
}
.social-links a:hover,
.footer-links a:hover {
    text-decoration: underline;
}

@media (max-width: 900px) {
    .pre-footer-container {
        grid-template-columns: 1fr 1fr;
        gap: 24px;
    }
}

@media (max-width: 600px) {
    .pre-footer {
        padding: 24px 20px;
    }
    .pre-footer-container {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    .pre-footer-logo {
        order: -1; /* keep logo at top on mobile */
    }
}

/* ---------------------------------------------------
   Footer
--------------------------------------------------- */
footer {
    text-align: center;
    padding: 30px;
    background: var(--bg-alt);
    margin-top: 0;
    font-size: 0.9rem;
    color: var(--text-light);
    border-top: 1px solid var(--accent-soft);
}

/* ---------------------------------------------------
   Hero (Technology Page)
--------------------------------------------------- */

/* Features grid: larger two-by-two layout */
.features-grid {
    display: grid;
    /* two columns so the four items form two rows */
    grid-template-columns: repeat(2, minmax(320px, 1fr));
    gap: 40px;
    max-width: 1400px;
    margin: 48px auto;
    padding: 0 40px;
}
.feature-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--accent-soft);
    display: flex;
    flex-direction: column;
    align-items: contain;
    justify-content: center;
    padding: 32px;
    aspect-ratio: 1 / 1;
    text-align: left;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 25px 60px rgba(0,0,0,0.12);
}
.feature-card h3 {
    margin: 0 0 12px 0;
    font-size: 1.3rem;
    text-align: center;
}
.feature-card p {
    margin: 0;
    color: var(--text-light);
    font-size: 1.05rem;
}

@media (max-width: 1100px) {
    .features-grid {
        grid-template-columns: repeat(2, minmax(260px, 1fr));
        gap: 32px;
        padding: 0 24px;
    }
}

@media (max-width: 900px) {
    /* stack into a single column on narrow screens */
    .features-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        padding: 0 20px;
    }
}