/* ====================================================
   dabla.de — Dark Hacker Theme
   ==================================================== */

/* --- Self-hosted Fonts --- */
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url("../fonts/inter-latin-ext.woff2") format("woff2");
  unicode-range:
    U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304,
    U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB,
    U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url("../fonts/inter-latin.woff2") format("woff2");
  unicode-range:
    U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC,
    U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212,
    U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "JetBrains Mono";
  font-style: normal;
  font-weight: 100 800;
  font-display: swap;
  src: url("../fonts/jetbrains-mono-latin-ext.woff2") format("woff2");
  unicode-range:
    U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304,
    U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB,
    U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "JetBrains Mono";
  font-style: normal;
  font-weight: 100 800;
  font-display: swap;
  src: url("../fonts/jetbrains-mono-latin.woff2") format("woff2");
  unicode-range:
    U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC,
    U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212,
    U+2215, U+FEFF, U+FFFD;
}

/* --- Custom Properties --- */
:root {
  --bg-primary: #0a0e17;
  --bg-secondary: #111827;
  --bg-card: #1a1f2e;
  --bg-card-hover: #232a3d;
  --bg-terminal: #0d1117;

  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --accent: #00ff88;
  --accent-dim: rgba(0, 255, 136, 0.15);
  --accent-glow: rgba(0, 255, 136, 0.3);

  --danger: #ff4444;
  --warning: #ffaa00;
  --info: #00aaff;

  --font-mono: "JetBrains Mono", "Fira Code", monospace;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;

  --radius: 12px;
  --radius-sm: 8px;
  --radius-xs: 4px;

  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-lg: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

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

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

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover {
  color: #33ffaa;
}

::selection {
  background: var(--accent);
  color: var(--bg-primary);
}

/* --- Matrix Canvas --- */
#matrix-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  pointer-events: none;
  opacity: 0.07;
}

/* --- Container --- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 14, 23, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: background var(--transition);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-logo {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
}
.nav-logo .prompt {
  color: var(--accent);
  margin-right: 4px;
}
.nav-logo .accent {
  color: var(--accent);
}

.nav-links {
  display: flex;
  gap: 32px;
}
.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 4px 0;
}
.nav-links a:hover {
  color: var(--accent);
}
.nav-links a::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width var(--transition);
}
.nav-links a:hover::after {
  width: 100%;
}

/* Mobile toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: var(--transition);
}
.nav-toggle.open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

.mobile-menu {
  display: none;
  flex-direction: column;
  padding: 16px 24px;
  gap: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}
.mobile-menu.open {
  display: flex;
}
.mobile-menu a {
  color: var(--text-secondary);
  font-size: 0.95rem;
}
.mobile-menu a:hover {
  color: var(--accent);
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .nav-toggle {
    display: flex;
  }
}

/* --- Hero --- */
.hero {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 80px;
}

.hero-content {
  max-width: 800px;
}

.hero-title {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 700;
  line-height: 1.15;
  margin-top: 32px;
}
.hero-title .line {
  display: block;
}
.hero-title .accent {
  color: var(--accent);
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-top: 20px;
  letter-spacing: 0.02em;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-top: 40px;
  flex-wrap: wrap;
}

/* --- Terminal Window --- */
.terminal-window {
  background: var(--bg-terminal);
  border: none;
  border-radius: var(--radius-sm);
  overflow: hidden;
  text-align: left;
  box-shadow: var(--shadow-lg);
}

.terminal-header {
  display: flex;
  align-items: center;
  padding: 6px 10px;
  background: #1a1a2e;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.45);
  position: relative;
  z-index: 1;
}
.terminal-title {
  flex: 1;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: #ccc;
  padding-left: 4px;
}
.terminal-controls {
  display: flex;
  gap: 8px;
}
.terminal-ctrl {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: none;
  cursor: default;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.terminal-ctrl svg {
  width: 8px;
  height: 8px;
  transition: opacity 0.15s;
}
.terminal-ctrl.minimize {
  background: #2c2c4d;
}
.terminal-ctrl.minimize svg {
  stroke: #aaa;
}
.terminal-ctrl.maximize {
  background: #2c2c4d;
}
.terminal-ctrl.maximize svg {
  stroke: #aaa;
}
.terminal-ctrl.close {
  background: #2c2c4d;
}
.terminal-ctrl.close svg {
  stroke: #aaa;
}

.terminal-body {
  padding: 12px 14px;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.8;
  background: var(--bg-terminal);
  min-height: 6rem;
  margin-bottom: 2rem;
}
.terminal-line {
  word-break: break-all;
}
.terminal-line .prompt {
  color: var(--accent);
  margin-right: 8px;
}
.terminal-line .prompt-host {
  color: var(--accent);
}
.terminal-line .prompt-path {
  color: #7aa2f7;
}
.terminal-line.output {
  color: var(--text-secondary);
}

.cursor {
  animation: blink 1s step-end infinite;
  color: var(--accent);
}
@keyframes blink {
  50% {
    opacity: 0;
  }
}

.blink {
  animation: blink-dot 1.5s ease-in-out infinite;
  color: var(--accent);
}
@keyframes blink-dot {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.3;
  }
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font-sans);
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: var(--bg-primary);
  border-color: var(--accent);
}
.btn-primary:hover {
  background: transparent;
  color: var(--accent);
  box-shadow: 0 0 24px var(--accent-glow);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border-color: rgba(255, 255, 255, 0.15);
}
.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn-sm {
  padding: 8px 20px;
  font-size: 0.85rem;
}

.btn-icon {
  font-size: 1.1em;
}

/* --- Scroll indicator --- */
.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  animation: float 2s ease-in-out infinite;
}
@keyframes float {
  0%,
  100% {
    transform: translateX(-50%) translateY(0);
  }
  50% {
    transform: translateX(-50%) translateY(10px);
  }
}

.mouse {
  width: 26px;
  height: 42px;
  border: 2px solid var(--text-muted);
  border-radius: 14px;
  position: relative;
}
.wheel {
  width: 4px;
  height: 8px;
  background: var(--accent);
  border-radius: 2px;
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  animation: scroll-down 2s ease-in-out infinite;
}
@keyframes scroll-down {
  0% {
    opacity: 1;
    top: 8px;
  }
  100% {
    opacity: 0;
    top: 24px;
  }
}

/* --- Sections --- */
.section {
  position: relative;
  z-index: 1;
  padding: 100px 0;
}
.section-alt {
  background: var(--bg-secondary);
}

.section-title {
  font-family: var(--font-mono);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  margin-bottom: 16px;
}
.section-title .accent {
  color: var(--accent);
}

.section-desc {
  color: var(--text-secondary);
  max-width: 720px;
  margin-bottom: 48px;
  font-size: 1.05rem;
}

/* --- About --- */
.about-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 48px;
  margin-top: 40px;
  align-items: start;
}
.about-text p {
  margin-bottom: 16px;
  color: var(--text-secondary);
}
.about-text strong {
  color: var(--text-primary);
}

.about-stats {
  display: grid;
  gap: 16px;
}
.stat-card {
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  padding: 20px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  display: flex;
  align-items: center;
  gap: 16px;
  transition: all var(--transition);
}
.stat-card:hover {
  border-color: var(--accent);
  transform: translateX(4px);
  box-shadow: 0 0 20px var(--accent-dim);
}
.stat-icon {
  font-size: 1.6rem;
}
.stat-label {
  font-weight: 600;
  font-size: 0.95rem;
}
.stat-detail {
  font-size: 0.8rem;
  color: var(--text-muted);
}

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

/* --- Skills --- */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 40px;
}
.skill-category {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 28px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  transition: border-color var(--transition);
}
.skill-category:hover {
  border-color: var(--accent-glow);
}
.skill-category h3 {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--accent);
  margin-bottom: 16px;
}
.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.tag {
  padding: 6px 14px;
  background: var(--accent-dim);
  color: var(--accent);
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
  font-family: var(--font-mono);
  border: 1px solid rgba(0, 255, 136, 0.12);
  transition: all var(--transition);
}
.tag:hover {
  background: var(--accent);
  color: var(--bg-primary);
}

/* --- DNS Demo --- */
.demo-container {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 24px;
  margin-bottom: 48px;
}

.demo-panel {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 28px;
  border: 1px solid rgba(255, 255, 255, 0.06);
}
.demo-panel h3 {
  font-family: var(--font-mono);
  font-size: 1rem;
  margin-bottom: 20px;
  color: var(--accent);
}

.form-group {
  margin-bottom: 16px;
}
.form-group label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
  font-family: var(--font-mono);
}
.form-input {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg-terminal);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xs);
  color: var(--text-primary);
  font-size: 0.9rem;
  font-family: var(--font-mono);
  transition: border-color var(--transition);
}
.form-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 12px var(--accent-dim);
}

.form-range {
  -webkit-appearance: none;
  width: 100%;
  height: 4px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 2px;
  outline: none;
  margin-top: 8px;
}
.form-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  background: var(--accent);
  border-radius: 50%;
  cursor: pointer;
}
.range-val {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
  margin-top: 4px;
}

.demo-actions {
  display: flex;
  gap: 12px;
  margin-top: 20px;
}

/* Progress bar */
.progress-bar-container {
  margin-top: 16px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 4px;
  height: 24px;
  position: relative;
  overflow: hidden;
}
.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), #00cc66);
  width: 0%;
  border-radius: 4px;
  transition: width 0.3s ease;
}
.progress-label {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--bg-primary);
}

/* DNS Log */
.dns-log-container {
  background: var(--bg-terminal);
  border-radius: var(--radius-xs);
  border: 1px solid rgba(255, 255, 255, 0.06);
  max-height: 280px;
  overflow-y: auto;
  margin-bottom: 24px;
}
.dns-log {
  padding: 14px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.8;
}
.dns-log-empty {
  color: var(--text-muted);
  font-style: italic;
}
.dns-entry {
  animation: fadeIn 0.3s ease;
}
.dns-entry .dns-time {
  color: var(--text-muted);
}
.dns-entry .dns-type {
  color: var(--warning);
  font-weight: 600;
}
.dns-entry .dns-query {
  color: var(--info);
  word-break: break-all;
}
.dns-entry .dns-data {
  color: var(--accent);
}
.dns-entry .dns-seq {
  color: var(--danger);
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Network diagram */
.net-diagram {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin-bottom: 24px;
  padding: 16px 0;
}
.net-node {
  text-align: center;
  min-width: 80px;
}
.node-icon {
  font-size: 2rem;
  margin-bottom: 4px;
}
.node-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
}
.node-status {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  margin-top: 4px;
  padding: 2px 8px;
  border-radius: 10px;
  display: inline-block;
}
.node-status.pass {
  background: rgba(0, 255, 136, 0.15);
  color: var(--accent);
}
.node-status.block {
  background: rgba(255, 68, 68, 0.15);
  color: var(--danger);
}

.net-arrow {
  flex: 1;
  max-width: 120px;
  text-align: center;
  position: relative;
}
.arrow-line {
  height: 3px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 2px;
  position: relative;
  overflow: hidden;
}
.arrow-packet {
  position: absolute;
  top: -3px;
  left: -12px;
  width: 12px;
  height: 9px;
  background: var(--accent);
  border-radius: 2px;
  opacity: 0;
  box-shadow: 0 0 8px var(--accent-glow);
}
.arrow-packet.animate {
  animation: packetMove 0.6s ease-in-out forwards;
}
@keyframes packetMove {
  0% {
    left: -12px;
    opacity: 1;
  }
  100% {
    left: 100%;
    opacity: 0.3;
  }
}

.arrow-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  margin-top: 6px;
}

/* Decoded output */
.decoded-section h4 {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
}
.decoded-output {
  background: var(--bg-terminal);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-xs);
  padding: 14px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent);
  min-height: 48px;
  word-break: break-all;
}
.decoded-output .placeholder {
  color: var(--text-muted);
  font-style: italic;
}

@media (max-width: 900px) {
  .demo-container {
    grid-template-columns: 1fr;
  }
}

/* Explanation cards */
.explain-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}
.explain-card {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color var(--transition);
}
.explain-card:hover {
  border-color: var(--accent-glow);
}
.explain-card h4 {
  font-family: var(--font-mono);
  color: var(--accent);
  margin-bottom: 12px;
  font-size: 0.95rem;
}
.explain-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* --- Projects --- */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 40px;
}
.project-card {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius);
  padding: 28px;
  transition: all var(--transition);
  display: block;
  color: var(--text-primary);
}
.project-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 255, 136, 0.08);
  color: var(--text-primary);
}

.project-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}
.project-icon {
  font-size: 1.8rem;
}
.project-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 20px;
  background: var(--accent-dim);
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.project-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
}
.project-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 16px;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.project-tech span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 4px 10px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 4px;
  color: var(--text-muted);
}

/* --- Contact --- */
.contact-content {
  min-width: 37rem;
  margin-top: 40px;
}
.contact-terminal {
  width: 100%;
}

/* --- Footer --- */
.footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 32px 0;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-logo {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--text-secondary);
}
.footer-logo .prompt {
  color: var(--accent);
  margin-right: 4px;
}
.footer-logo .accent {
  color: var(--accent);
}
.footer-copy {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* --- Utility: Fade-in on scroll --- */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 0.6s ease,
    transform 0.6s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}