/* ============================================================
   Philip IT — main.css
   ============================================================ */

/* --- Custom properties ------------------------------------ */
:root {
  --font:   -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Consolas", monospace;

  --color-bg:      #ffffff;
  --color-surface: #f8fafc;
  --color-border:  #e2e8f0;
  --color-text:    #0f172a;
  --color-muted:   #64748b;
  --color-accent:  #2563eb;
  --color-accent-h:#1d4ed8;
  --color-star:    #f59e0b;

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 7rem;

  --radius:    6px;
  --max-width: 860px;
  --nav-h:     64px;
  --ease:      150ms ease;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-h);
}

body {
  font-family: var(--font);
  font-size: 1.0625rem;
  line-height: 1.7;
  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-h); }

/* --- Layout helpers --------------------------------------- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.section { padding: var(--space-xl) 0; }
.section--alt { background: var(--color-surface); }

.section__label {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

h2 {
  font-size: clamp(1.75rem, 5vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: var(--space-lg);
}

/* --- Navigation ------------------------------------------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  background: rgba(255,255,255,0.90);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-border);
}

.nav__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  font-weight: 700;
  font-size: 1rem;
  color: var(--color-text);
  letter-spacing: -0.02em;
}
.nav__logo:hover { color: var(--color-accent); }

.nav__links {
  display: flex;
  list-style: none;
  gap: var(--space-md);
  align-items: center;
}

.nav__links a {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--color-muted);
  transition: color var(--ease);
}
.nav__links a:hover { color: var(--color-text); }

/* --- Hero ------------------------------------------------- */
.hero {
  min-height: calc(100vh - var(--nav-h));
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--color-border);
}

.hero__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-xl) var(--space-md);
}

.hero__label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--color-muted);
  margin-bottom: var(--space-md);
}

.hero h1 {
  font-size: clamp(3rem, 10vw, 5.5rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1.0;
  margin-bottom: var(--space-md);
}

.hero__sub {
  font-size: 1.05rem;
  color: var(--color-muted);
  line-height: 1.6;
}

/* --- Projekter -------------------------------------------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--space-sm);
}

.card {
  padding: var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg);
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  transition: border-color var(--ease), transform var(--ease);
}

.card:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
}

.card__status {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.card__status--live    { color: #16a34a; }
.card__status--coming  { color: var(--color-muted); }
.card__status--archived{ color: #dc2626; }

.card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin: 0;
}

.card p {
  font-size: 0.9rem;
  color: var(--color-muted);
  flex: 1;
}

.card__link {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-accent);
  margin-top: var(--space-xs);
}

/* --- Tech Stack ------------------------------------------- */
.tech-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.tech-item {
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-border);
}

.tech-item:first-child { border-top: 1px solid var(--color-border); }

.tech-item__top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-sm);
  margin-bottom: var(--space-xs);
}

.tech-item__meta {
  display: flex;
  align-items: baseline;
  gap: var(--space-sm);
}

.tech-item__name {
  font-weight: 700;
  font-size: 1.0rem;
  color: var(--color-text);
}

a.tech-item__name:hover { color: var(--color-accent); }

.tech-item__category {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.tech-item__stars {
  font-size: 1rem;
  color: var(--color-star);
  white-space: nowrap;
  flex-shrink: 0;
}

.tech-item__comment {
  font-size: 0.92rem;
  color: var(--color-muted);
  max-width: 640px;
}

/* --- What's hot ------------------------------------------- */
.hot-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.hot-item {
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-border);
}

.hot-item:first-child { border-top: 1px solid var(--color-border); }

.hot-item__link {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
  transition: color var(--ease);
}

.hot-item__link::after {
  content: "↗";
  font-size: 0.8em;
  color: var(--color-muted);
  font-weight: 400;
}

.hot-item__link:hover { color: var(--color-accent); }

.hot-item__comment {
  font-size: 0.92rem;
  color: var(--color-muted);
  max-width: 640px;
}

/* --- Contact ---------------------------------------------- */
.section--kontakt { border-top: 1px solid var(--color-border); }

.contact__message {
  display: inline-block;
  margin-bottom: var(--space-md);
  padding: 0.6rem 1rem;
  background: #dcfce7;
  color: #166534;
  border-radius: var(--radius);
  font-size: 0.92rem;
  font-weight: 500;
}

/* Form */
.contact__form {
  max-width: 600px;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
}

.form__row--half {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-sm);
}

.form__field {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.form__field label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
}

.form__field input,
.form__field textarea {
  font-family: var(--font);
  font-size: 0.95rem;
  color: var(--color-text);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 0.6rem 0.8rem;
  transition: border-color var(--ease);
  resize: vertical;
}

.form__field input:focus,
.form__field textarea:focus {
  outline: none;
  border-color: var(--color-accent);
}

.form__error {
  font-size: 0.8rem;
  color: #dc2626;
}

.form__submit {
  align-self: flex-start;
  font-family: var(--font);
  font-size: 0.92rem;
  font-weight: 600;
  color: #fff;
  background: var(--color-accent);
  border: none;
  border-radius: var(--radius);
  padding: 0.65rem 1.4rem;
  cursor: pointer;
  transition: background var(--ease), transform var(--ease);
}

.form__submit:hover {
  background: var(--color-accent-h);
  transform: translateY(-1px);
}

.contact__bio {
  font-size: 0.88rem;
  color: var(--color-muted);
  max-width: 560px;
  line-height: 1.7;
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border);
}

/* --- Footer ----------------------------------------------- */
.footer {
  padding: var(--space-md) 0;
  border-top: 1px solid var(--color-border);
}

.footer__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
  display: flex;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--color-muted);
}

/* --- Responsive ------------------------------------------- */
@media (max-width: 600px) {
  :root { --space-xl: 4rem; }

  .nav__links { gap: var(--space-sm); }

  .tech-item__top { flex-direction: column; gap: var(--space-xs); }

  .form__row--half { grid-template-columns: 1fr; }
}