/* =====================================================================
   kondz.io - Primary Stylesheet
   Iteration 1 - New Professional Homepage
   ===================================================================== */

/* -----------------------------------------------------------------------
   Design Tokens
   ----------------------------------------------------------------------- */
:root {
    --color-bg:          #0d0d12;
    --color-surface:     #12141f;
    --color-surface-alt: #16192a;
    --color-gold:        #c9a84c;
    --color-gold-light:  #e8c96a;
    --color-blue:        #3776ab;
    --color-blue-light:  #4a90c4;
    --color-orange:      #ffa500;
    --color-text:        #e8e8f0;
    --color-muted:       #8888aa;
    --color-divider:     #2a2a3a;

    --font-heading: 'Space Grotesk', system-ui, sans-serif;
    --font-body:    'Inter', system-ui, sans-serif;

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;

    --transition: 200ms ease;

    --nav-height: 64px;
    --content-max: 1200px;
}

/* -----------------------------------------------------------------------
   Reset & Base
   ----------------------------------------------------------------------- */
*, *::before, *::after {
    box-sizing: border-box;
}

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

body {
    margin: 0;
    background-color: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* Remove Bootstrap's default resets that conflict */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--color-text);
    margin-top: 0;
    line-height: 1.2;
}

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

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

p {
    margin-top: 0;
    margin-bottom: 1rem;
    font-family: var(--font-body);
    font-size: inherit;
    text-align: left;
    padding: 0;
    width: auto;
}

img {
    max-width: 100%;
    height: auto;
}

/* -----------------------------------------------------------------------
   Focus visible - gold ring for keyboard nav
   ----------------------------------------------------------------------- */
:focus-visible {
    outline: 2px solid var(--color-gold);
    outline-offset: 3px;
    border-radius: var(--radius-sm);
}

/* -----------------------------------------------------------------------
   Skip link
   ----------------------------------------------------------------------- */
.skip-link {
    position: absolute;
    top: -100%;
    left: 1rem;
    z-index: 9999;
    padding: 0.5rem 1rem;
    background: var(--color-gold);
    color: var(--color-bg);
    font-weight: 700;
    font-family: var(--font-body);
    border-radius: var(--radius-sm);
    transition: top var(--transition);
}

.skip-link:focus {
    top: 1rem;
    color: var(--color-bg);
}

/* -----------------------------------------------------------------------
   Navbar
   ----------------------------------------------------------------------- */
.site-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    height: var(--nav-height);
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-divider);
    display: flex;
    align-items: center;
}

.site-nav .container {
    max-width: var(--content-max);
    margin: 0 auto;
    padding: 0 1.5rem;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-gold);
    letter-spacing: -0.01em;
    text-decoration: none;
}

.nav-logo:hover,
.nav-logo:focus {
    color: var(--color-gold-light);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Nav hamburger - hidden on desktop */
.nav-toggle {
    display: none;
    background: none;
    border: 1px solid var(--color-divider);
    border-radius: var(--radius-sm);
    padding: 0.4rem 0.6rem;
    color: var(--color-text);
    cursor: pointer;
    font-size: 1.1rem;
    line-height: 1;
    transition: border-color var(--transition), color var(--transition);
}

.nav-toggle:hover,
.nav-toggle:focus {
    border-color: var(--color-gold);
    color: var(--color-gold);
}

/* Mobile nav menu */
.nav-menu {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-menu a {
    color: var(--color-muted);
    font-size: 0.875rem;
    padding: 0.3rem 0.5rem;
    border-radius: var(--radius-sm);
    transition: color var(--transition);
}

.nav-menu a:hover,
.nav-menu a:focus {
    color: var(--color-text);
}

/* CV button in nav */
.btn-nav-cv {
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-gold) !important;
    border: 1px solid var(--color-gold);
    border-radius: var(--radius-sm);
    padding: 0.35rem 0.85rem;
    text-decoration: none;
    transition: background-color var(--transition), color var(--transition);
}

.btn-nav-cv:hover,
.btn-nav-cv:focus {
    background-color: var(--color-gold);
    color: var(--color-bg) !important;
}

@media (max-width: 768px) {
    .nav-toggle {
        display: block;
    }

    .nav-menu {
        display: none;
        position: absolute;
        top: var(--nav-height);
        left: 0;
        width: 100%;
        background-color: var(--color-bg);
        border-bottom: 1px solid var(--color-divider);
        flex-direction: column;
        align-items: flex-start;
        padding: 1rem 1.5rem;
        gap: 0.75rem;
    }

    .nav-menu.is-open {
        display: flex;
    }

    .nav-menu a {
        font-size: 1rem;
    }

    .nav-actions {
        gap: 0.5rem;
    }
}

/* -----------------------------------------------------------------------
   Section base
   ----------------------------------------------------------------------- */
section {
    padding: 5rem 0;
}

.container {
    max-width: var(--content-max);
    margin: 0 auto;
    padding: 0 1.5rem;
    width: 100%;
}

.section-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-gold);
    margin-bottom: 0.75rem;
}

.section-heading {
    font-family: var(--font-heading);
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 0.5rem;
}

.section-subheading {
    color: var(--color-muted);
    font-size: 1.0625rem;
    margin-bottom: 2.5rem;
    max-width: 50ch;
}

/* -----------------------------------------------------------------------
   Hero section
   ----------------------------------------------------------------------- */
#hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: var(--nav-height);
    position: relative;
    overflow: hidden;
    background:
        radial-gradient(ellipse 80% 60% at 70% 40%, rgba(55, 118, 171, 0.12) 0%, transparent 60%),
        radial-gradient(ellipse 60% 50% at 20% 70%, rgba(201, 168, 76, 0.08) 0%, transparent 55%),
        radial-gradient(ellipse 40% 40% at 80% 80%, rgba(255, 165, 0, 0.05) 0%, transparent 50%),
        var(--color-bg);
}

/* Subtle grid overlay for circuit-board feel */
#hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(201, 168, 76, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(201, 168, 76, 0.04) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 760px;
}

.hero-eyebrow {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.hero-chip {
    font-size: 0.8125rem;
    font-weight: 600;
    font-family: var(--font-body);
    padding: 0.3rem 0.75rem;
    border-radius: 999px;
    border: 1px solid var(--color-divider);
    color: var(--color-muted);
    background-color: var(--color-surface);
    letter-spacing: 0.01em;
}

.hero-name {
    font-family: var(--font-heading);
    font-size: clamp(2.75rem, 6vw, 5rem);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 0.25rem;
    letter-spacing: -0.02em;
    line-height: 1.05;
}

.hero-role {
    font-family: var(--font-heading);
    font-size: clamp(1.125rem, 2.5vw, 1.5rem);
    font-weight: 500;
    color: var(--color-gold);
    margin-bottom: 1.5rem;
}

.hero-tagline {
    font-size: 1.0625rem;
    color: var(--color-muted);
    max-width: 52ch;
    margin-bottom: 2.5rem;
    line-height: 1.7;
}

.hero-ctas {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    align-items: center;
    margin-bottom: 3rem;
}

/* Primary CTA - gold filled */
.btn-primary-cta {
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-bg);
    background-color: var(--color-gold);
    border: 2px solid var(--color-gold);
    border-radius: var(--radius-sm);
    padding: 0.75rem 1.75rem;
    text-decoration: none;
    transition: background-color var(--transition), color var(--transition), border-color var(--transition);
    display: inline-block;
}

.btn-primary-cta:hover,
.btn-primary-cta:focus {
    background-color: var(--color-gold-light);
    border-color: var(--color-gold-light);
    color: var(--color-bg);
}

/* Secondary CTA - ghost text */
.btn-ghost-cta {
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-text);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    transition: color var(--transition), gap var(--transition);
}

.btn-ghost-cta:hover,
.btn-ghost-cta:focus {
    color: var(--color-gold);
    gap: 0.65rem;
}

.btn-ghost-cta .arrow {
    font-size: 1.1rem;
    transition: transform var(--transition);
}

.btn-ghost-cta:hover .arrow,
.btn-ghost-cta:focus .arrow {
    transform: translateX(4px);
}

/* Scroll indicator */
.scroll-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    color: var(--color-muted);
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.scroll-chevron {
    display: block;
    width: 20px;
    height: 20px;
    border-right: 2px solid var(--color-muted);
    border-bottom: 2px solid var(--color-muted);
    transform: rotate(45deg);
    animation: bounce 1.6s infinite;
    margin-top: 0.25rem;
}

@keyframes bounce {
    0%, 100% { transform: rotate(45deg) translateY(0); }
    50%       { transform: rotate(45deg) translateY(5px); }
}

/* -----------------------------------------------------------------------
   About / Values section
   ----------------------------------------------------------------------- */
#about {
    background-color: var(--color-surface);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.about-text p {
    font-size: 1.0625rem;
    line-height: 1.8;
    color: var(--color-text);
    margin-bottom: 1.25rem;
}

.about-text p:last-child {
    margin-bottom: 0;
}

/* Stats grid */
.stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.stat-card {
    background-color: var(--color-bg);
    border: 1px solid var(--color-divider);
    border-left: 3px solid var(--color-gold);
    border-radius: var(--radius-md);
    padding: 1.25rem 1rem;
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-gold);
    line-height: 1;
    margin-bottom: 0.25rem;
}

.stat-label {
    font-size: 0.8125rem;
    color: var(--color-muted);
    line-height: 1.3;
}

@media (max-width: 768px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }
}

/* -----------------------------------------------------------------------
   Experience timeline
   ----------------------------------------------------------------------- */
#experience {
    background-color: var(--color-bg);
}

.timeline {
    position: relative;
    padding-left: 2rem;
    max-width: 720px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.5rem;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--color-gold), transparent);
}

.timeline-entry {
    position: relative;
    padding-bottom: 2.5rem;
}

.timeline-entry:last-child {
    padding-bottom: 0;
}

/* Gold dot marker */
.timeline-entry::before {
    content: '';
    position: absolute;
    left: -2.375rem;
    top: 0.375rem;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: var(--color-gold);
    border: 2px solid var(--color-bg);
    box-shadow: 0 0 0 2px var(--color-gold);
}

.timeline-date {
    display: inline-block;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-gold);
    letter-spacing: 0.03em;
    margin-bottom: 0.35rem;
    font-family: var(--font-body);
}

.timeline-title {
    font-family: var(--font-heading);
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 0.35rem;
}

.timeline-company {
    color: var(--color-blue-light);
}

.timeline-desc {
    font-size: 0.9375rem;
    color: var(--color-muted);
    line-height: 1.6;
    margin: 0;
}

/* -----------------------------------------------------------------------
   Skills section
   ----------------------------------------------------------------------- */
#skills {
    background-color: var(--color-surface);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.skill-group-title {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--color-divider);
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.skill-tag {
    font-size: 0.8125rem;
    font-weight: 500;
    font-family: var(--font-body);
    padding: 0.3rem 0.7rem;
    border-radius: 999px;
    line-height: 1;
}

/* Gold border - Proficient */
.skill-tag--gold {
    border: 1px solid var(--color-gold);
    color: var(--color-gold);
    background-color: rgba(201, 168, 76, 0.08);
}

/* Blue - Gen AI tools */
.skill-tag--blue {
    border: 1px solid var(--color-blue);
    color: var(--color-blue-light);
    background-color: rgba(55, 118, 171, 0.1);
}

/* Orange - Also */
.skill-tag--orange {
    border: 1px solid var(--color-orange);
    color: var(--color-orange);
    background-color: rgba(255, 165, 0, 0.08);
}

@media (max-width: 768px) {
    .skills-grid {
        grid-template-columns: 1fr;
        gap: 1.75rem;
    }
}

/* -----------------------------------------------------------------------
   Community & Projects section
   ----------------------------------------------------------------------- */
#community {
    background-color: var(--color-bg);
}

.community-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.project-card {
    position: relative; /* Required for Bootstrap stretched-link ::after overlay */
    background-color: var(--color-surface);
    border: 1px solid var(--color-divider);
    border-left: 3px solid var(--color-gold);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: border-color var(--transition), background-color var(--transition);
    cursor: pointer;
}

/* Cover thumbnail - spans full card width, fixed height, crops to fit */
.project-card-cover {
    display: block;
    width: 100%;
    height: 260px;
    object-fit: contain;
    transition: filter var(--transition);
    /* No bottom border; card border provides containment */
}

/* Text content area below the cover image */
.project-card-body {
    padding: 1.75rem;
}

.project-card:hover,
.project-card:focus-within {
    border-left-color: var(--color-gold-light);
    background-color: var(--color-surface-alt);
}

.project-card:hover .project-card-cover,
.project-card:focus-within .project-card-cover {
    filter: brightness(1.08);
}

.project-card-meta {
    font-size: 0.8125rem;
    color: var(--color-muted);
    margin-bottom: 0.5rem;
}

.project-card-title {
    font-family: var(--font-heading);
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.project-card-title a {
    color: var(--color-text);
    text-decoration: none;
    transition: color var(--transition);
}

.project-card-title a:hover,
.project-card-title a:focus {
    color: var(--color-gold);
}

.project-card-desc {
    font-size: 0.9375rem;
    color: var(--color-muted);
    line-height: 1.6;
    margin: 0;
}

@media (max-width: 640px) {
    .community-grid {
        grid-template-columns: 1fr;
    }
}

/* -----------------------------------------------------------------------
   Contact section
   ----------------------------------------------------------------------- */
#contact {
    background-color: var(--color-surface);
    text-align: center;
}

#contact .section-subheading {
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}

.contact-email {
    font-family: var(--font-heading);
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    font-weight: 600;
    color: var(--color-gold);
    text-decoration: none;
    display: inline-block;
    margin-top: 1rem;
    margin-bottom: 3rem;
    transition: color var(--transition);
}

.contact-email:hover,
.contact-email:focus {
    color: var(--color-gold-light);
}

.social-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.social-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-muted);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border: 1px solid var(--color-divider);
    border-radius: var(--radius-sm);
    transition: color var(--transition), border-color var(--transition), background-color var(--transition);
}

.social-link:hover,
.social-link:focus {
    color: var(--color-text);
    border-color: var(--color-gold);
    background-color: rgba(201, 168, 76, 0.06);
}

.social-link i {
    font-size: 1rem;
    width: 1rem;
    text-align: center;
}

.social-note {
    font-size: 0.75rem;
    color: var(--color-muted);
    margin-left: 0.2rem;
}

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

.site-footer p {
    margin: 0;
    font-size: 0.8125rem;
    color: var(--color-muted);
    text-align: center;
}

/* -----------------------------------------------------------------------
   Utility - visually hidden (for sr-only equivalent)
   ----------------------------------------------------------------------- */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* -----------------------------------------------------------------------
   Divider
   ----------------------------------------------------------------------- */
hr {
    border: none;
    border-top: 1px solid var(--color-divider);
    margin: 0;
}

/* -----------------------------------------------------------------------
   Responsive adjustments
   ----------------------------------------------------------------------- */
@media (max-width: 768px) {
    section {
        padding: 3.5rem 0;
    }

    .hero-ctas {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 480px) {
    :root {
        --nav-height: 56px;
    }

    .container {
        padding: 0 1rem;
    }
}