/* ============================================
   TOKENS
   ============================================ */

:root {
    --bg:          #0D0D12;
    --bg-card:     #14141C;
    --bg-card-hover: #1A1A26;
    --border:      #242434;
    --border-accent: #3A2E6A;
    --text-primary: #E6E6F0;
    --text-secondary: #8888A4;
    --text-muted:  #55556A;
    --purple:      #8264D4;
    --purple-light: #9E80E8;
    --purple-dim:  rgba(130, 100, 212, 0.15);
    --white:       #FFFFFF;
    --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.45);
    --shadow-hover: 0 8px 40px rgba(0, 0, 0, 0.6);
    --radius:      10px;
    --transition:  0.22s ease;
}

/* ============================================
   BASE
   ============================================ */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', system-ui, sans-serif;
    font-size: 16px;
    line-height: 1.7;
    background-color: var(--bg);
    color: var(--text-primary);
    -webkit-font-smoothing: antialiased;
}

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

ul {
    list-style: none;
}

a {
    color: var(--purple-light);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover,
a:focus {
    color: var(--white);
}

/* ============================================
   TYPOGRAPHY
   ============================================ */

h1 {
    font-size: clamp(2.2rem, 5vw, 3.4rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.15;
    color: var(--white);
    text-shadow: 0 2px 16px rgba(0, 0, 0, 0.8);
}

h2 {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--purple-light);
    margin-bottom: 2rem;
    position: relative;
    padding-bottom: 0.75rem;
}

h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 36px;
    height: 2px;
    background: var(--purple);
    border-radius: 2px;
}

h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--white);
}

p {
    color: var(--text-secondary);
}

/* ============================================
   LAYOUT
   ============================================ */

.container {
    max-width: 860px;
    margin: 0 auto;
    padding: 0 1.75rem;
}

section {
    padding: 90px 0;
}

section:nth-of-type(even) {
    background-color: var(--bg);
}

section:nth-of-type(odd) {
    background-color: #0F0F16;
}

/* ============================================
   NAVIGATION
   ============================================ */

#site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 200;
    transition: background-color 0.3s ease, backdrop-filter 0.3s ease, border-color 0.3s ease;
    border-bottom: 1px solid transparent;
}

#site-header.scrolled {
    background-color: rgba(13, 13, 18, 0.88);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom-color: var(--border);
}

nav {
    max-width: 860px;
    margin: 0 auto;
    padding: 1.1rem 1.75rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.nav-name {
    font-weight: 700;
    font-size: 1rem;
    color: var(--white);
    letter-spacing: -0.01em;
    white-space: nowrap;
}

nav ul {
    display: flex;
    gap: 2rem;
}

nav ul li a {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    letter-spacing: 0.01em;
    transition: color var(--transition);
}

nav ul li a:hover,
nav ul li a:focus {
    color: var(--white);
}

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

#hero {
    position: relative;
    min-height: 100svh;
    background-image: url('../images/chicago-skyline-linkedIn-background.jpg');
    background-size: cover;
    background-position: center 60%;
    background-repeat: no-repeat;
    display: flex;
    align-items: center;
    padding: 0;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to bottom,
        rgba(6, 6, 12, 0.68) 0%,
        rgba(6, 6, 12, 0.82) 60%,
        rgba(13, 13, 18, 1) 100%
    );
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 860px;
    margin: 0 auto;
    padding: 120px 1.75rem 80px;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 3rem;
}

.hero-text {
    flex: 1;
    min-width: 0;
}

.hero-eyebrow {
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: #B8A4F0;
    margin-bottom: 0.45rem;
    text-shadow: 0 1px 8px rgba(0, 0, 0, 0.7);
}

.hero-tagline {
    font-size: 1.05rem;
    color: #B0B0C8;
    margin-top: 0.4rem;
    margin-bottom: 2rem;
    font-style: italic;
    text-shadow: 0 1px 8px rgba(0, 0, 0, 0.7);
}

.hero-cta {
    display: inline-block;
    padding: 0.7rem 1.75rem;
    background-color: var(--purple);
    color: var(--white);
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: 6px;
    transition: background-color var(--transition), transform var(--transition);
    text-decoration: none;
}

.hero-cta:hover,
.hero-cta:focus {
    background-color: var(--purple-light);
    color: var(--white);
    transform: translateY(-2px);
}

.hero-image-wrap {
    flex-shrink: 0;
}

.headshot {
    width: 220px;
    height: 220px;
    object-fit: cover;
    object-position: top center;
    border-radius: 14px;
    border: 2px solid rgba(130, 100, 212, 0.4);
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.6);
}

/* ============================================
   ABOUT
   ============================================ */

#about {
    padding: 70px 0;
}

.about-columns {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 2.5rem;
    align-items: center;
}

.about-text p {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--text-secondary);
    max-width: 480px;
}

.about-image-wrap {
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.6rem;
}

.kinnick-img {
    width: 240px;
    height: 300px;
    object-fit: cover;
    object-position: center;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-card);
    display: block;
}

.image-caption {
    font-size: 0.78rem;
    color: var(--text-muted);
    text-align: center;
    line-height: 1.5;
    margin-bottom: 0;
}

/* ============================================
   SKILLS
   ============================================ */

.skills-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
}

.skill-card {
    background-color: #171722;
    border: 1px solid var(--border);
    border-top: 2px solid var(--purple);
    border-radius: var(--radius);
    padding: 1.25rem 1.25rem 1.35rem;
    transition: border-color var(--transition), background-color var(--transition), transform var(--transition);
    display: flex;
    flex-direction: column;
}

.skill-card:hover {
    background-color: var(--bg-card-hover);
    border-top-color: var(--purple-light);
    transform: translateY(-3px);
}

.skill-card-icon {
    color: var(--purple);
    margin-bottom: 0.85rem;
}

.skill-card h3 {
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-bottom: 0.9rem;
}

.skill-card ul {
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
}

.skill-card ul li {
    font-size: 0.95rem;
    color: var(--text-primary);
    padding-left: 0.75rem;
    position: relative;
}

.skill-card ul li::before {
    content: '–';
    position: absolute;
    left: 0;
    color: var(--purple);
    font-weight: 700;
}

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

.project-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.1rem;
}

.project-card {
    background-color: #171722;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
    box-shadow: var(--shadow-card);
}

.project-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
    border-color: var(--border-accent);
}

.project-card-inner {
    padding: 1.4rem 1.6rem;
}

.project-header {
    margin-bottom: 1rem;
}

.project-header h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: #FFFFFF;
    margin-bottom: 0.3rem;
}

.project-tools {
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--purple-light);
    margin-bottom: 0;
}

.project-bullets {
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
    padding-left: 0;
}

.project-bullets li {
    font-size: 0.95rem;
    color: var(--text-secondary);
    padding-left: 1.1rem;
    position: relative;
    line-height: 1.6;
}

.project-bullets li::before {
    content: '›';
    position: absolute;
    left: 0;
    color: var(--purple);
    font-weight: 700;
    font-size: 1.1rem;
    line-height: 1.45;
}

/* ============================================
   CONTACT
   ============================================ */

#contact {
    text-align: center;
    background-color: #0F0F16;
}

#contact h2::after {
    left: 50%;
    transform: translateX(-50%);
}

.contact-intro {
    font-size: 1.05rem;
    color: var(--text-secondary);
    white-space: nowrap;
    margin: 0 auto 2.5rem;
}

.contact-row {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.contact-link {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.75rem 1.5rem;
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 600;
    transition: background-color var(--transition), border-color var(--transition), color var(--transition), transform var(--transition);
}

.contact-link:hover,
.contact-link:focus {
    background-color: var(--purple-dim);
    border-color: var(--purple);
    color: var(--white);
    transform: translateY(-2px);
}

.contact-icon {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

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

footer {
    background-color: var(--bg);
    border-top: 1px solid var(--border);
    padding: 1.5rem 0;
    text-align: center;
}

footer p {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 0;
}

/* ============================================
   RESPONSIVE — TABLET (max 720px)
   ============================================ */

@media (max-width: 720px) {
    .skills-grid {
        grid-template-columns: 1fr;
    }

    .about-columns {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .about-image-wrap {
        justify-self: center;
    }

    .kinnick-img {
        width: 180px;
        height: 225px;
    }

    .hero-content {
        flex-direction: column-reverse;
        align-items: flex-start;
        gap: 2rem;
        padding-top: 140px;
    }

    .hero-image-wrap {
        align-self: center;
    }

    .headshot {
        width: 180px;
        height: 180px;
    }

    h2::after {
        left: 0;
        transform: none;
    }

    #contact h2::after {
        left: 50%;
        transform: translateX(-50%);
    }
}

/* ============================================
   RESPONSIVE — MOBILE (max 480px)
   ============================================ */

@media (max-width: 480px) {
    section {
        padding: 70px 0;
    }

    .nav-name {
        display: none;
    }

    nav ul {
        gap: 1.25rem;
    }

    .headshot {
        width: 150px;
        height: 150px;
    }

    .contact-row {
        flex-direction: column;
        align-items: center;
    }

    .contact-link {
        width: 100%;
        max-width: 260px;
        justify-content: center;
    }
}