/* ============================================================
   Professional Aerospace Portfolio — Aidan Becker
   ============================================================ */
@import url("fontawesome-all.min.css");
@import url("https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Source+Code+Pro:wght@400;500&display=swap");

/* ---- CSS Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    /* Navy / aerospace palette */
    --navy-900: #0a1628;
    --navy-800: #0f1f3d;
    --navy-700: #162a4a;
    --navy-600: #1d3557;
    --slate-500: #334155;
    --slate-400: #64748b;
    --slate-300: #94a3b8;
    --slate-200: #cbd5e1;
    --slate-100: #e2e8f0;
    --slate-50:  #f1f5f9;
    --white:     #ffffff;
    --accent:    #38bdf8;   /* sky-blue highlight */
    --accent-dim:#0ea5e9;
    --success:   #22c55e;
    --gold:      #fbbf24;

    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'Source Code Pro', 'Consolas', monospace;

    --max-width: 1120px;
    --section-pad: 5rem 0;
    --transition: 0.3s ease;
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
    font-family: var(--font-main);
    color: var(--slate-200);
    background: var(--navy-900);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

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

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

ul { list-style: none; }

/* ---- Utility ---- */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 1.5rem; }
.section-label {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 0.5rem;
}
.section-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 1rem;
    line-height: 1.25;
}
.section-title::after {
    content: '';
    display: block;
    width: 3rem;
    height: 3px;
    background: var(--accent);
    margin-top: 0.75rem;
    border-radius: 2px;
}
.section-subtitle {
    font-size: 1.05rem;
    color: var(--slate-300);
    max-width: 640px;
    margin-bottom: 2.5rem;
}

/* ============================================================
   NAVIGATION
   ============================================================ */
#topnav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    background: rgba(10, 22, 40, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(56, 189, 248, 0.08);
    transition: background var(--transition);
}
#topnav .nav-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}
.nav-logo {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--white);
    letter-spacing: 0.03em;
}
.nav-logo span { color: var(--accent); }
.nav-links { display: flex; gap: 2rem; }
.nav-links a {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--slate-300);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    transition: color var(--transition);
    position: relative;
}
.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0; right: 0;
    height: 2px;
    background: var(--accent);
    transform: scaleX(0);
    transition: transform var(--transition);
}
.nav-links a:hover { color: var(--white); }
.nav-links a:hover::after { transform: scaleX(1); }

/* Mobile nav toggle */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--white);
    font-size: 1.4rem;
    cursor: pointer;
}

/* ============================================================
   HERO
   ============================================================ */
#hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(160deg, var(--navy-900) 0%, var(--navy-800) 50%, var(--navy-700) 100%);
}
#hero::before {
    content: '';
    position: absolute;
    top: -30%; right: -15%;
    width: 700px; height: 700px;
    background: radial-gradient(circle, rgba(56,189,248,0.06) 0%, transparent 70%);
    pointer-events: none;
}
.hero-content { position: relative; z-index: 1; }
.hero-greeting {
    font-family: var(--font-mono);
    font-size: 0.95rem;
    color: var(--accent);
    margin-bottom: 1rem;
}
.hero-name {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 700;
    color: var(--white);
    line-height: 1.1;
    margin-bottom: 0.75rem;
}
.hero-headline {
    font-size: clamp(1.1rem, 2.5vw, 1.5rem);
    font-weight: 400;
    color: var(--slate-300);
    margin-bottom: 1.5rem;
    max-width: 680px;
}
.hero-summary {
    font-size: 1rem;
    color: var(--slate-400);
    max-width: 560px;
    margin-bottom: 2rem;
}
.hero-cta { display: flex; gap: 1rem; flex-wrap: wrap; }
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.75rem;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 600;
    transition: all var(--transition);
    cursor: pointer;
    border: none;
}
.btn-primary {
    background: var(--accent);
    color: var(--navy-900);
}
.btn-primary:hover {
    background: var(--gold);
    color: var(--navy-900);
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(56,189,248,0.3);
}
.btn-outline {
    background: transparent;
    color: var(--accent);
    border: 1.5px solid var(--accent);
}
.btn-outline:hover {
    background: rgba(56,189,248,0.08);
    color: var(--white);
    border-color: var(--white);
    transform: translateY(-2px);
}

/* ============================================================
   ABOUT
   ============================================================ */
#about { padding: var(--section-pad); }
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}
.about-text p { margin-bottom: 1rem; color: var(--slate-300); }
.about-details {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}
.detail-card {
    background: var(--navy-800);
    border: 1px solid rgba(56,189,248,0.08);
    border-radius: 8px;
    padding: 1.25rem;
    transition: border-color var(--transition), transform var(--transition);
}
.detail-card:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
}
.detail-card .label {
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--slate-400);
    margin-bottom: 0.35rem;
}
.detail-card .value {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--white);
}

/* ============================================================
   EXPERIENCE  (Timeline)
   ============================================================ */
#experience { padding: var(--section-pad); background: var(--navy-800); }
.timeline { position: relative; padding-left: 2rem; }
.timeline::before {
    content: '';
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--accent), var(--navy-700));
}
.timeline-item {
    position: relative;
    margin-bottom: 3rem;
}
.timeline-item::before {
    content: '';
    position: absolute;
    left: -2rem;
    top: 6px;
    width: 12px; height: 12px;
    background: var(--accent);
    border: 2px solid var(--navy-800);
    border-radius: 50%;
    transform: translateX(-5px);
}
.timeline-item.current::before {
    box-shadow: 0 0 0 4px rgba(56,189,248,0.25);
}
.timeline-date {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--accent);
    margin-bottom: 0.4rem;
}
.timeline-role {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 0.15rem;
}
.timeline-company {
    font-size: 0.95rem;
    color: var(--slate-400);
    margin-bottom: 0.75rem;
}
.timeline-body ul { padding-left: 1.2rem; list-style: disc; }
.timeline-body li {
    font-size: 0.93rem;
    color: var(--slate-300);
    margin-bottom: 0.5rem;
    line-height: 1.6;
}
.timeline-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 0.75rem; }
.tag {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    background: rgba(56,189,248,0.08);
    color: var(--accent);
    padding: 0.25rem 0.65rem;
    border-radius: 4px;
    border: 1px solid rgba(56,189,248,0.15);
}

/* ============================================================
   SKILLS
   ============================================================ */
#skills { padding: var(--section-pad); }
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}
.skill-category {
    background: var(--navy-800);
    border: 1px solid rgba(56,189,248,0.06);
    border-radius: 10px;
    padding: 1.75rem;
    transition: border-color var(--transition), transform var(--transition);
}
.skill-category:hover {
    border-color: var(--accent);
    transform: translateY(-3px);
}
.skill-icon {
    font-size: 1.5rem;
    color: var(--accent);
    margin-bottom: 0.75rem;
}
.skill-category h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 0.75rem;
}
.skill-list { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.skill-list .tag { font-size: 0.75rem; }

/* ============================================================
   PROJECTS
   ============================================================ */
#projects { padding: var(--section-pad); background: var(--navy-800); }
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.5rem;
}
.project-card {
    background: var(--navy-900);
    border: 1px solid rgba(56,189,248,0.06);
    border-radius: 10px;
    overflow: hidden;
    transition: border-color var(--transition), transform var(--transition);
}
.project-card:hover {
    border-color: var(--accent);
    transform: translateY(-4px);
}
.project-thumb {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-bottom: 1px solid rgba(56,189,248,0.06);
}
.project-info { padding: 1.5rem; }
.project-info h3 {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 0.5rem;
}
.project-info p {
    font-size: 0.9rem;
    color: var(--slate-300);
    margin-bottom: 1rem;
}
.project-links { display: flex; gap: 0.75rem; }
.project-links a {
    font-size: 0.8rem;
    font-weight: 600;
    padding: 0.4rem 1rem;
    border: 1px solid var(--accent);
    border-radius: 5px;
    color: var(--accent);
    transition: all var(--transition);
}
.project-links a:hover {
    background: var(--accent);
    color: var(--navy-900);
}

/* ============================================================
   EDUCATION
   ============================================================ */
#education { padding: var(--section-pad); }
.education-card {
    background: var(--navy-800);
    border: 1px solid rgba(56,189,248,0.08);
    border-radius: 10px;
    padding: 2rem;
    max-width: 640px;
}
.education-card h3 {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 0.25rem;
}
.education-card .school {
    color: var(--accent);
    font-weight: 500;
    margin-bottom: 0.2rem;
}
.education-card .grad-date {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--slate-400);
    margin-bottom: 0.75rem;
}
.education-card p {
    font-size: 0.93rem;
    color: var(--slate-300);
}

/* ============================================================
   CONTACT
   ============================================================ */
#contact { padding: var(--section-pad); background: var(--navy-800); }
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    max-width: 800px;
}
.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}
.contact-item i {
    font-size: 1.25rem;
    color: var(--accent);
    margin-top: 0.2rem;
}
.contact-item .contact-label {
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--slate-400);
    margin-bottom: 0.2rem;
}
.contact-item .contact-value {
    font-size: 0.93rem;
    color: var(--white);
}
.contact-item .contact-value a { color: var(--white); }
.contact-item .contact-value a:hover { color: var(--accent); }

/* ============================================================
   PROJECT DETAIL PAGES
   ============================================================ */
.project-detail { padding: var(--section-pad); }
.project-detail-header {
    margin-bottom: 2.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid rgba(56,189,248,0.08);
}
.project-detail-header h1 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 0.5rem;
}
.project-detail-header .project-tagline {
    font-size: 1.05rem;
    color: var(--slate-300);
    margin-bottom: 1rem;
}
.project-detail-header .project-meta {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}
.project-detail-body p {
    font-size: 0.95rem;
    color: var(--slate-300);
    margin-bottom: 1.25rem;
    line-height: 1.8;
}
.project-detail-body a { color: var(--accent); }
.project-detail-body a:hover { color: var(--gold); }
.project-detail-body img,
.project-detail-body iframe {
    border-radius: 8px;
    margin: 1.5rem 0;
    border: 1px solid rgba(56,189,248,0.08);
}
.project-detail-body .image-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin: 1.5rem 0;
}
.project-detail-body .image-row img {
    width: 100%;
    margin: 0;
}
.project-detail-body .tools-used {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--slate-400);
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(56,189,248,0.08);
}

@media (max-width: 768px) {
    .project-detail-body .image-row { grid-template-columns: 1fr; }
}

/* ============================================================
   FOOTER
   ============================================================ */
footer {
    text-align: center;
    padding: 2rem 1.5rem;
    border-top: 1px solid rgba(56,189,248,0.06);
    font-size: 0.8rem;
    color: var(--slate-400);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
    .nav-links { display: none; }
    .nav-toggle { display: block; }
    .nav-links.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 64px; left: 0; right: 0;
        background: var(--navy-900);
        padding: 1rem 1.5rem;
        gap: 1rem;
        border-bottom: 1px solid rgba(56,189,248,0.08);
    }
    .about-grid { grid-template-columns: 1fr; }
    .hero-name { font-size: 2.2rem; }
    .section-title { font-size: 1.6rem; }
    .projects-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
    :root { --section-pad: 3rem 0; }
    .about-details { grid-template-columns: 1fr; }
    .hero-cta { flex-direction: column; }
    .btn { width: 100%; justify-content: center; }
}