/* ── Reset & Base ─────────────────────────────────────────── */

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

:root {
  /* Dark steel palette (from ForssCloud theme) */
  --color-bg: #0f172a;
  --color-bg-alt: #1e293b;
  --color-surface: #1e293b;
  --color-card-bg: #1e293b;
  --color-header-bg: #0f172a;
  --color-text: #e2e8f0;
  --color-text-muted: #94a3b8;
  --color-border: #334155;

  /* Gradient accents (sky → indigo) */
  --color-accent: #38bdf8;
  --color-accent-alt: #818cf8;
  --color-accent-hover: #7dd3fc;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Fira Mono", Menlo, monospace;
  --max-width: 960px;
  --header-height: 56px;
  --radius: 4px;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

a:hover {
  color: var(--color-accent-hover);
  text-decoration: underline;
}

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

/* Skip to content — visible only on keyboard focus */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  padding: 0.5rem 1rem;
  background: var(--color-accent);
  color: var(--color-bg);
  border-radius: 0 0 var(--radius) var(--radius);
  z-index: 200;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
}

.skip-link:focus {
  top: 0;
}

/* ── Container ───────────────────────────────────────────── */

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

/* ── Header ──────────────────────────────────────────────── */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-header-bg);
  border-bottom: 1px solid var(--color-border);
  height: var(--header-height);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 2rem;
}

.site-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.site-title:hover {
  text-decoration: none;
  color: var(--color-accent);
}

.main-nav {
  display: flex;
  gap: 1.5rem;
}

.main-nav a {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.15s;
}

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

.auth-controls {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.auth-link {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

.auth-link:hover {
  color: var(--color-accent);
  text-decoration: none;
}

.auth-action {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  padding: 0.3rem 0.8rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: all 0.15s;
}

.auth-action:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
  text-decoration: none;
}

/* ── Mobile Nav Toggle ───────────────────────────────────── */

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  margin-left: auto;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-text-muted);
  border-radius: 1px;
  transition: transform 0.2s, opacity 0.2s;
}

/* ── Hero ────────────────────────────────────────────────── */

.hero {
  padding: 6rem 0 5rem;
  text-align: center;
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-alt) 100%);
}

.hero h1 {
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-alt) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.subtitle {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
  letter-spacing: 0.02em;
}

.hero-text {
  max-width: 580px;
  margin: 0 auto 2rem;
  color: var(--color-text);
  font-size: 1.05rem;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ── Buttons ─────────────────────────────────────────────── */

.btn {
  display: inline-block;
  padding: 0.6rem 1.4rem;
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: var(--radius);
  transition: all 0.15s;
  text-decoration: none;
  letter-spacing: 0.02em;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-alt) 100%);
  color: var(--color-bg);
}

.btn-primary:hover {
  opacity: 0.9;
  text-decoration: none;
  color: var(--color-bg);
}

.btn-secondary {
  background: transparent;
  color: var(--color-accent);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  border-color: var(--color-accent);
  text-decoration: none;
}

/* ── Sections ────────────────────────────────────────────── */

.section {
  padding: 5rem 0;
}

.section-alt {
  background: var(--color-bg-alt);
}

.section h2 {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  letter-spacing: -0.01em;
}

.section-intro {
  color: var(--color-text-muted);
  margin-bottom: 2rem;
}

/* ── About ───────────────────────────────────────────────── */

.about-content p {
  margin-bottom: 1rem;
  max-width: 680px;
  color: var(--color-text);
}

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

/* ── Projects ────────────────────────────────────────────── */

.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}

.project-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: border-color 0.15s;
}

.project-card:hover {
  border-color: var(--color-accent);
}

.project-card h3 {
  font-size: 1.1rem;
  margin-bottom: 0.3rem;
  color: var(--color-text);
}

.project-tags {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  margin-bottom: 0.75rem;
  letter-spacing: 0.02em;
}

.project-card p {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  margin-bottom: 1rem;
  line-height: 1.6;
}

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

.project-links a {
  font-size: 0.85rem;
  font-weight: 500;
}

/* ── Blog ────────────────────────────────────────────────── */

.blog-entry {
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--color-border);
}

.blog-entry:last-child {
  border-bottom: none;
}

.blog-entry time {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
}

.blog-entry h3 {
  font-size: 1.1rem;
  margin: 0.25rem 0 0.4rem;
}

.blog-entry h3 a {
  color: var(--color-text);
}

.blog-entry h3 a:hover {
  color: var(--color-accent);
  text-decoration: none;
}

.blog-entry p {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  line-height: 1.55;
}

/* ── Blog Post Page ──────────────────────────────────────── */

.blog-post {
  padding: 3rem 0 5rem;
}

.blog-post .post-meta {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  margin-bottom: 2rem;
}

.blog-post h1 {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}

.blog-post h2 {
  font-size: 1.3rem;
  font-weight: 600;
  margin: 2.5rem 0 1rem;
  color: var(--color-text);
}

.blog-post p {
  margin-bottom: 1rem;
  max-width: 680px;
  line-height: 1.7;
}

.blog-post ul,
.blog-post ol {
  margin: 0 0 1.5rem 1.5rem;
  max-width: 680px;
}

.blog-post li {
  margin-bottom: 0.4rem;
  line-height: 1.6;
  color: var(--color-text);
}

.blog-post code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--color-bg-alt);
  padding: 0.15em 0.4em;
  border-radius: var(--radius);
  color: var(--color-accent);
}

.blog-post pre {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem;
  overflow-x: auto;
  margin-bottom: 1.5rem;
  max-width: 100%;
}

.blog-post pre code {
  background: none;
  padding: 0;
  color: var(--color-text);
}

.blog-post a {
  text-decoration: underline;
  text-underline-offset: 2px;
}

.blog-post .back-link {
  display: inline-block;
  margin-top: 3rem;
  font-size: 0.9rem;
  text-decoration: none;
}

.blog-post .back-link:hover {
  text-decoration: underline;
}

.blog-post .placeholder {
  color: var(--color-text-muted);
  font-style: italic;
  border-left: 3px solid var(--color-border);
  padding-left: 1rem;
  margin: 1rem 0;
}

/* ── Contact ─────────────────────────────────────────────── */

.contact-content p {
  max-width: 600px;
  margin-bottom: 2rem;
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.contact-item {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1rem;
  align-items: baseline;
}

.contact-item strong {
  min-width: 80px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.contact-item a {
  font-size: 0.92rem;
}

.contact-item small {
  width: 100%;
  padding-left: calc(80px + 1rem);
  font-size: 0.72rem;
  color: var(--color-text-muted);
  font-family: var(--font-mono, monospace);
}

/* ── Footer ──────────────────────────────────────────────── */

.site-footer {
  padding: 2rem 0;
  text-align: center;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  border-top: 1px solid var(--color-border);
}

/* ── Mobile ──────────────────────────────────────────────── */

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

  .main-nav,
  .auth-controls {
    display: none;
    flex-direction: column;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-header-bg);
    border-bottom: 1px solid var(--color-border);
    padding: 1rem 1.5rem;
    gap: 0.75rem;
  }

  .main-nav.open,
  .auth-controls.open {
    display: flex;
  }

  .auth-controls {
    border-top: 1px solid var(--color-border);
    padding-top: 0.75rem;
  }

  .auth-controls.open {
    top: auto;
  }

  .hero {
    padding: 4rem 0 3.5rem;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .section {
    padding: 3.5rem 0;
  }

  .project-grid {
    grid-template-columns: 1fr;
  }

  .blog-post h1 {
    font-size: 1.6rem;
  }
}