/* ============================================================
   styles.css  –  Fabian Meixner Personal Website
   ============================================================ */

/* ------------------------------------------------------------
   1. Design Tokens (Custom Properties)
   ------------------------------------------------------------ */
:root {
  --color-bg:       #0a0a0f;
  --color-surface:  #13131a;
  --color-card:     #1a1a24;
  --color-border:   #2a2a3a;
  --color-accent:   #6c63ff;
  --color-accent2:  #00d4aa;
  --color-text:     #e8e8f0;
  --color-muted:    #7a7a9a;

  --radius-card:    14px;
  --nav-height:     64px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
}

/* ------------------------------------------------------------
   3. Navigation
   ------------------------------------------------------------ */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(1rem, 5vw, 4rem);
  background: rgba(10, 10, 15, 0.75);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
}

.nav-logo {
  font-weight: 700;
  font-size: 1.1rem;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  color: var(--color-text);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}

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

/* ------------------------------------------------------------
   4. Layout Utilities
   ------------------------------------------------------------ */
section {
  padding: 6rem clamp(1rem, 8vw, 10rem);
}

section:first-of-type {
  padding-top: calc(var(--nav-height) + 5rem);
}

/* ------------------------------------------------------------
   5. Shared Components
   ------------------------------------------------------------ */

/* Section title */
.section-title {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  margin-bottom: 3rem;
}

.section-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--color-border), transparent);
}

/* Badge / Tag */
.tag {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: 99px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: 1rem;
  background: rgba(108, 99, 255, 0.15);
  color: var(--color-accent);
}

.tag--infra {
  background: rgba(0, 212, 170, 0.12);
  color: var(--color-accent2);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.5rem;
  border-radius: 99px;
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  transition: transform 0.15s, box-shadow 0.15s;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn--primary {
  background: linear-gradient(135deg, var(--color-accent), #8b5cf6);
  color: #fff;
  box-shadow: 0 4px 20px rgba(108, 99, 255, 0.35);
}

.btn--primary:hover {
  box-shadow: 0 8px 30px rgba(108, 99, 255, 0.5);
}

.btn--outline {
  border: 1px solid var(--color-border);
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.04);
}

.btn--outline:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.btn-group {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn-group img {
  width: 30px;
  height: 30px;
}

/* ------------------------------------------------------------
   6. Hero Section (#about)
   ------------------------------------------------------------ */
#about {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background:
    radial-gradient(ellipse 60% 50% at 10% 40%, rgba(108, 99, 255, 0.12), transparent),
    radial-gradient(ellipse 50% 40% at 90% 60%, rgba(0, 212, 170, 0.08), transparent);
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4rem;
  align-items: center;
  width: 100%;
}

.hero-greeting {
  color: var(--color-accent2);
  font-size: 1.1rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.hero-name {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1rem;
}

.hero-name span {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-role {
  font-size: 1.25rem;
  color: var(--color-muted);
  margin-bottom: 1.5rem;
}

.hero-bio {
  max-width: 54ch;
  color: var(--color-muted);
  line-height: 1.8;
  margin-bottom: 2rem;
}

.avatar-wrap {
  width: 320px;
  height: 320px;
  flex-shrink: 0;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent2));
  padding: 3px;
}

.avatar-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: var(--color-surface);
  font-size: 5rem;
  overflow: hidden;
}

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

/* ------------------------------------------------------------
   7. CV Section (#cv)
   ------------------------------------------------------------ */
#cv {
  background: var(--color-surface);
}

.cv-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.cv-col h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-accent2);
  margin-bottom: 1.5rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.cv-item {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 1.75rem;
}

.cv-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
}

.cv-item::after {
  content: '';
  position: absolute;
  left: 3.5px;
  top: 1.2rem;
  bottom: -1.5rem;
  width: 1px;
  background: var(--color-border);
}

.cv-item:last-child::after {
  display: none;
}

.cv-date {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 0.2rem;
}

.cv-role {
  font-weight: 700;
  font-size: 1rem;
}

.cv-org {
  color: var(--color-muted);
  font-size: 0.9rem;
  margin-bottom: 0.4rem;
}

.cv-desc {
  color: var(--color-muted);
  font-size: 0.88rem;
}

/* ------------------------------------------------------------
   8. Skills Sections
   ------------------------------------------------------------ */
#net-skills {
  background: var(--color-surface);
}

#net-skills .section-title {
  --color-accent: var(--color-accent2);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2.5rem;
}

.skill-card {
  position: relative;
  overflow: hidden;
  padding: 2rem;
  /* ursprünglich 0.13 und 0.07 */
  background:
    linear-gradient(135deg, rgba(108, 99, 255, 0.13) 0%, rgba(0, 212, 170, 0.07) 100%),
    var(--color-card);
  border: 1px solid transparent;
  border-radius: var(--radius-card);
  /* Gradient border via background-clip trick */
  background-clip: padding-box;
  box-shadow: 0 0 0 1px var(--color-border);
  transition: transform 0.25s, box-shadow 0.25s;
}

.skill-card:hover {
  transform: translateY(-4px);
  box-shadow:
    0 0 0 1px var(--color-accent),
    0 12px 32px rgba(0, 0, 0, 0.4),
    0 0 24px rgba(108, 99, 255, 0.12);
}

.skill-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  margin-bottom: 1rem;
  /*
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.07); */
  font-size: 2rem;
}

.skill-icon img {
  height: 52px;
  width: 52px;
}

.skill-name {
  font-weight: 700;
  font-size: 1.05rem;
  margin-bottom: 0.6rem;
}

.skill-desc {
  color: var(--color-muted);
  font-size: 0.875rem;
  line-height: 1.7;
}

/* ------------------------------------------------------------
   9. Contact Section (#contact)
   ------------------------------------------------------------ */
#contact {
  text-align: center;
  background: radial-gradient(ellipse 60% 60% at 50% 100%, rgba(108, 99, 255, 0.1), transparent);
}

#contact p {
  color: var(--color-muted);
  max-width: 45ch;
  margin: 0 auto 2rem;
}

#contact .section-title {
  justify-content: center;
}

#contact .btn-group {
  justify-content: center;
}

/* ------------------------------------------------------------
   10. Footer
   ------------------------------------------------------------ */
footer {
  padding: 2rem 1rem;
  border-top: 1px solid var(--color-border);
  color: var(--color-muted);
  font-size: 0.85rem;
  text-align: center;
}

/* ------------------------------------------------------------
   11. Responsive – Mobile
   ------------------------------------------------------------ */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .hero-inner {
    grid-template-columns: 1fr;
  }

  .avatar-wrap {
    width: 140px;
    height: 140px;
    order: -1;
  }

  .avatar-inner {
    font-size: 3rem;
  }

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