/* ==========================================================================
   Variables
   ========================================================================== */

:root {
  --color-bg: #000000;
  --color-bg-card: #1e1e1e;
  --color-text: #ffffff;
  --color-text-muted: #b3b3b3;
  --color-border: rgba(255, 255, 255, 0.1);

  --color-accent-start: #ff17b0;
  --color-accent-end: #a6ff00;
  --color-accent-start-hover: #e000a0;
  --color-accent-end-hover: #8fe000;
  --gradient-accent: linear-gradient(100deg, var(--color-accent-start) 0%, var(--color-accent-start) 35%, var(--color-accent-end) 65%, var(--color-accent-end) 100%);
  --gradient-accent-hover: linear-gradient(100deg, var(--color-accent-start-hover) 0%, var(--color-accent-start-hover) 35%, var(--color-accent-end-hover) 65%, var(--color-accent-end-hover) 100%);

  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-heading: var(--font-body);

  --max-width: 1100px;
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2.5rem;
  --space-5: 4rem;

  --radius: 8px;
}

/* ==========================================================================
   Reset / base
   ========================================================================== */

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

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

::selection {
  background: var(--color-accent-start);
  color: #0d0d0d;
}

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

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

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-accent-end);
  outline-offset: 3px;
  border-radius: 2px;
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  line-height: 1.15;
  font-weight: 700;
  margin: 0 0 var(--space-2);
}

section {
  padding: var(--space-5) var(--space-2);
}

.hero-inner,
.about-inner,
.projects-inner,
.contact-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

/* ==========================================================================
   Gradient accent helpers
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-accent);
  color: #0d0d0d;
  padding: 0.9rem 2rem;
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.03em;
  border-radius: 0;
  box-shadow: 0 0 20px -4px var(--color-accent-start), 0 0 20px -4px var(--color-accent-end);
  transition: transform 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
  background: var(--gradient-accent-hover);
  box-shadow: 0 0 28px -2px var(--color-accent-start-hover), 0 0 28px -2px var(--color-accent-end-hover);
  transform: scale(1.03);
  text-decoration: none;
}

.btn-small {
  padding: 0.55rem 1.25rem;
  font-size: 0.8rem;
  width: 100%;
}

/* ==========================================================================
   Navbar
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--color-border);
  z-index: 100;
}

.navbar {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-2);
}

.nav-logo {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--color-text);
}

.nav-links {
  list-style: none;
  display: flex;
  gap: var(--space-3);
  margin: 0;
  padding: 0;
}

.nav-links a {
  position: relative;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: color 0.2s ease;
}

.nav-links a::after {
  content: '';
  position: absolute;
  left: 0;
  right: 100%;
  bottom: -4px;
  height: 2px;
  background: var(--gradient-accent);
  transition: right 0.25s ease;
}

.nav-links a:hover {
  color: var(--color-text);
  text-decoration: none;
}

.nav-links a:hover::after,
.nav-links a.active::after {
  right: 0;
}

.nav-links a.active {
  color: var(--color-text);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 18px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.nav-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--color-text);
}

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
  min-height: 50vh;
  display: flex;
  align-items: center;
}

.hero-text > * {
  opacity: 0;
  transform: translateY(14px);
  animation: hero-in 0.7s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.hero-text > *:nth-child(1) { animation-delay: 0s; }
.hero-text > *:nth-child(2) { animation-delay: 0.08s; }
.hero-text > *:nth-child(3) { animation-delay: 0.16s; }
.hero-text > *:nth-child(4) { animation-delay: 0.24s; }

@keyframes hero-in {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-inner {
  width: 100%;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  align-items: center;
}

.pill {
  display: inline-block;
  background: var(--color-text);
  color: var(--color-bg);
  padding: 0.5rem 1.25rem;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.03em;
  margin-bottom: var(--space-3);
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 600;
  margin-bottom: var(--space-2);
}

.hero .tagline {
  color: var(--color-text-muted);
  font-size: 1.1rem;
  max-width: 32rem;
  margin: 0 0 var(--space-3);
}

.hero-photo {
  width: 100%;
  aspect-ratio: 1;
  max-width: 320px;
  border-radius: 50%;
  padding: 6px;
  background: var(--gradient-accent);
  box-shadow: 0 0 60px -10px var(--color-accent-start), 0 0 60px -10px var(--color-accent-end);
  justify-self: center;
}

.hero-photo img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
}

/* ==========================================================================
   About
   ========================================================================== */

.about-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  align-items: center;
}

.about h2,
.projects h2,
.site-footer h2 {
  font-size: clamp(2.25rem, 7vw, 3.5rem);
}

.about-block {
  margin: var(--space-4) 0;
}

.about-block h3 {
  font-size: 1.05rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--space-1);
  margin-bottom: var(--space-3);
  font-weight: 600;
}

.entry {
  margin-bottom: var(--space-3);
}

.entry--logo {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
}

.entry-content {
  flex: 1 1 260px;
  min-width: 0;
  order: 1;
}

.entry-logo {
  width: 220px;
  height: 220px;
  object-fit: cover;
  border-radius: 16px;
  flex-shrink: 0;
  order: 2;
}

.entry-logo--placeholder {
  background: var(--gradient-accent);
}

@media (max-width: 700px) {
  .entry-logo {
    width: 88px;
    height: 88px;
    order: 0;
  }
}

.entry-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-1);
}

.entry-header h4 {
  font-size: 1.4rem;
  margin: 0;
  font-weight: 600;
}

.entry-date {
  color: var(--color-text-muted);
  font-size: 0.85rem;
  white-space: nowrap;
}

.entry p {
  max-width: 70ch;
  margin: var(--space-1) 0 0;
  color: var(--color-text-muted);
}

.edu-demo {
  margin-top: var(--space-3);
}

.edu-demo-frame {
  display: block;
  width: 100%;
  height: clamp(420px, 65vw, 720px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: #05070c;
}

.edu-demo-caption {
  margin: var(--space-1) 0 0;
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

.skills-group {
  margin-bottom: var(--space-1);
}

.skills-group:last-child {
  margin-bottom: 0;
}

.skills-group-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-muted);
  margin: 0 0 0.4rem;
}

.skills-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  padding: 0;
  margin: 0;
}

.skills-list li {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 0.4rem 1rem;
  font-size: 0.9rem;
}

/* ==========================================================================
   Projects
   ========================================================================== */

.section-subtext {
  color: var(--color-text-muted);
  font-size: 1.05rem;
  max-width: 40rem;
  margin: 0 0 var(--space-4);
}

.mobile-break {
  display: none;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-3);
}

.project-card {
  background: var(--color-bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.3s ease, background 0.3s ease;
}

.project-card:hover {
  transform: scale(1.02);
  background: #2a2a2a;
}

.project-media {
  aspect-ratio: 16 / 9;
  background: var(--gradient-accent);
  overflow: hidden;
}

.project-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.project-media--placeholder {
  background: var(--color-bg-card);
  border-bottom: 1px dashed var(--color-border);
}

.project-body {
  padding: var(--space-3);
}

.project-body h3 {
  font-size: 1.4rem;
  margin-bottom: var(--space-1);
}

.project-body p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin: 0 0 var(--space-2);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: var(--space-2);
}

.tag {
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 0.25rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-muted);
}

/* ==========================================================================
   Homelab
   ========================================================================== */

.homelab-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.homelab-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  align-items: start;
}

.homelab-diagram {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-4) var(--space-2);
}

.diagram-node {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 0.6rem 1.25rem;
  font-weight: 600;
  font-size: 0.9rem;
  text-align: center;
  background: #141414;
}

.diagram-node--server {
  background: linear-gradient(90deg, var(--color-accent-start), var(--color-accent-end));
  color: #0d0d0d;
  border: none;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  overflow: hidden;
}

.diagram-node-sub {
  font-weight: 600;
  font-size: 0.75rem;
  color: #1a1a1a;
}

.diagram-line {
  width: 2px;
  height: var(--space-3);
  background: var(--color-border);
}

.diagram-containers {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-1);
  margin-top: var(--space-1);
}

.diagram-container {
  background: #141414;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 0.35rem 0.9rem;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.skills-list-status {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-text);
  border-color: var(--color-accent-end);
}

.homelab-status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent-end);
  box-shadow: 0 0 8px 1px var(--color-accent-end);
  flex-shrink: 0;
}

.homelab-status {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-3);
  margin-top: var(--space-4);
}

.homelab-status-text h3 {
  font-size: 1.4rem;
  margin-bottom: 0.25rem;
}

.homelab-status-text p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin: 0;
}


@media (min-width: 800px) {
  .homelab-grid {
    grid-template-columns: 0.85fr 1.15fr;
  }
}

/* ==========================================================================
   Footer / contact
   ========================================================================== */

.site-footer {
  text-align: left;
  border-top: 1px solid var(--color-border);
}

.contact-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.social-links {
  display: flex;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

.icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  color: var(--color-text);
  transition: background 0.2s ease, transform 0.2s ease;
}

.icon-btn:hover {
  background: var(--color-bg-card);
  transform: scale(1.08);
}

.icon-btn--disabled {
  opacity: 0.6;
  cursor: default;
  pointer-events: none;
}

.footer-note {
  max-width: var(--max-width);
  margin: var(--space-4) auto 0;
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (min-width: 700px) {
  .hero-inner {
    grid-template-columns: 1.2fr 0.8fr;
  }

  .mobile-break {
    display: none;
  }
}

@media (max-width: 700px) {
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-2);
    gap: var(--space-2);
    display: none;
  }

  .nav-links.open {
    display: flex;
  }

  section {
    padding: var(--space-4) var(--space-2);
  }

  .mobile-break {
    display: block;
  }
}