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

html {
    scroll-behavior: smooth;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    line-height: 1.6;
    background-color: #f7f9fc;
    color: #1f2937;
}

img {
    max-width: 100%;
    display: block;
}

a {
    color: #0f4c81;
    text-decoration: none;
}

a:hover,
a:focus {
    text-decoration: underline;
}

ul {
    list-style: none;
}
/* =========================
   2. Utility Classes
========================= */
.container {
    width: 90%;
    max-width: 1120px;
    margin: 0 auto;
}

.narrow {
    max-width: 760px;
}

.center {
    text-align: center;
}

.section {
    padding: 4rem 0;
}

.section-alt {
    background-color: #eef3f9;
}

/* =========================
   3. Accessibility
========================= */
.skip-link {
    position: absolute;
    left: -9999px;
    top: auto;
}

.skip-link:focus {
    left: 1rem;
    top: 1rem;
    background: #ffffff;
    color: #000000;
    padding: 0.75rem 1rem;
    border: 2px solid #0f4c81;
    z-index: 1000;
}

/* =========================
   4. Header / Navigation
========================= */
.site-header {
    background-color: #0b1f3a;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    min-height: 80px;
    gap: 1rem;
}

.logo {
    color: #ffffff;
    font-size: 1.5rem;
    font-weight: 700;
}

.logo span {
    color: #7dd3fc;
}

.nav-links {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.nav-links a {
    color: #ffffff;
    font-weight: 600;
    padding: 0.5rem 0.75rem;
    border-radius: 4px;
}

.nav-links a:hover,
.nav-links a:focus,
.nav-links a.active {
    background-color: #12345d;
    text-decoration: none;
}
/* =========================
   4. Header / Navigation
========================= */
.site-header {
    background-color: #0b1f3a;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    min-height: 80px;
    gap: 1rem;
}

.logo {
    color: #ffffff;
    font-size: 1.5rem;
    font-weight: 700;
}

.logo span {
    color: #7dd3fc;
}

.nav-links {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.nav-links a {
    color: #ffffff;
    font-weight: 600;
    padding: 0.5rem 0.75rem;
    border-radius: 4px;
}

.nav-links a:hover,
.nav-links a:focus,
.nav-links a.active {
    background-color: #12345d;
    text-decoration: none;
}
/* =========================
   5. Hero Section
========================= */
.hero {
    background: linear-gradient(135deg, #0b1f3a, #12345d);
    color: #ffffff;
    padding: 5rem 0;
}

.hero-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
    align-items: center;
}

.eyebrow {
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: #7dd3fc;
    margin-bottom: 0.75rem;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.hero-intro {
    max-width: 650px;
    margin-bottom: 1.5rem;
}

.hero-card {
    background-color: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 1.5rem;
    border-radius: 12px;
}

.hero-card h2 {
    margin-bottom: 1rem;
}

.profile-list li {
    margin-bottom: 0.6rem;
}
/* =========================
   6. Buttons
========================= */
.button-group {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn {
    display: inline-block;
    background-color: #0f4c81;
    color: #ffffff;
    font-weight: 700;
    padding: 0.85rem 1.4rem;
    border-radius: 6px;
    transition: background-color 0.3s ease;
}

.btn:hover,
.btn:focus {
    background-color: #0b365c;
    text-decoration: none;
}

.btn-secondary {
    background-color: #ffffff;
    color: #0f4c81;
}

.btn-secondary:hover,
.btn-secondary:focus {
    background-color: #dbeafe;
}

.btn-outline {
    background-color: transparent;
    color: #ffffff;
    border: 2px solid #ffffff;
}

.btn-outline:hover,
.btn-outline:focus {
    background-color: #ffffff;
    color: #0f4c81;
}

.text-link {
    display: inline-block;
    margin-top: 1rem;
    font-weight: 700;
}

/* =========================
   7. Cards / Content Blocks
========================= */
.card-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-top: 2rem;
}

.card {
    background-color: #ffffff;
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 4px 16px rgba(15, 76, 129, 0.08);
}

.card h3,
.card h2 {
    margin-bottom: 0.75rem;
}

.card img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 1rem;
}

/* =========================
   8. Page Banner
========================= */
.page-banner {
    background-color: #dbeafe;
    padding: 3rem 0;
}

.page-banner h1 {
    margin-bottom: 0.5rem;
    font-size: 2.2rem;
}
/* =========================
   9. Two Column Layout
========================= */
.two-column {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
    align-items: start;
}

.stack-list li {
    margin-bottom: 0.75rem;
}

/* =========================
   10. Timeline Section
========================= */
.timeline {
    display: grid;
    gap: 1.5rem;
}

.timeline-item {
    background-color: #ffffff;
    border-left: 5px solid #0f4c81;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 4px 16px rgba(15, 76, 129, 0.08);
}

.timeline-meta {
    font-weight: 700;
    color: #0f4c81;
    margin-bottom: 0.5rem;
}
/* =========================
   11. Projects Section
========================= */
.projects-list {
    display: grid;
    gap: 1.5rem;
}

.project-link {
    text-decoration: none;
    color: inherit;
}

.project-item {
    background-color: #ffffff;
    padding: 1.75rem;
    border-radius: 10px;
    box-shadow: 0 4px 16px rgba(15, 76, 129, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.project-item h2 {
    margin-bottom: 0.75rem;
}

.project-item img {
    width: 100%;
    height: auto;
    object-fit: contain;
    border-radius: 8px;
    margin-bottom: 1rem;
}

.project-item:hover,
.project-link:hover .project-item {
    transform: translateY(-4px);
    box-shadow: 0 8px 22px rgba(15, 76, 129, 0.14);
    cursor: pointer;
}
/* =========================
   12. CTA Section
========================= */
.cta-section {
    background-color: #0f4c81;
    color: #ffffff;
}

/* =========================
   13. Footer
========================= */
.site-footer {
    background-color: #0b1f3a;
    color: #ffffff;
    padding: 1.5rem 0;
}

.footer-flex {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
}

.footer-links {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.footer-links a {
    color: #ffffff;
}
/* =========================
   14. Responsive Design
========================= */
@media (max-width: 900px) {
    .hero-grid,
    .two-column,
    .card-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 700px) {
    .navbar,
    .footer-flex {
        flex-direction: column;
        align-items: flex-start;
    }

    .hero-grid,
    .two-column,
    .card-grid {
        grid-template-columns: 1fr;
    }

    .hero h1 {
        font-size: 2.2rem;
    }

    .nav-links {
        flex-direction: column;
        width: 100%;
    }
}