/* ==========================================================================
   Components — Nav, Hero, Service Cards, Code Block, Footer.
   ========================================================================== */

/* --- Navigation --- */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.nav__logo {
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
}

.nav__logo span {
  color: var(--color-accent);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav__link {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-secondary);
  transition: color var(--duration) var(--ease-out);
  letter-spacing: 0.01em;
}

.nav__link:hover,
.nav__link:focus-visible {
  color: var(--color-text-primary);
}

.nav__link--cta {
  color: var(--color-accent);
}

.nav__link--cta:hover,
.nav__link--cta:focus-visible {
  color: var(--color-accent-hover);
}

/* Mobile hamburger */
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-sm);
}

.nav__toggle-bar {
  width: 20px;
  height: 2px;
  background: var(--color-text-primary);
  border-radius: 1px;
  transition: transform var(--duration) var(--ease-out),
              opacity var(--duration) var(--ease-out);
}

.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* --- Hero --- */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--nav-height);
  position: relative;
  overflow: hidden;
}

/* Particle canvas (behind all hero content) */
.hero__canvas {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__canvas canvas {
  display: block;
  width: 100%;
  height: 100%;
}

/* Floating gradient orbs */
.hero::before,
.hero::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  pointer-events: none;
  z-index: 0;
}

.hero::before {
  width: 600px;
  height: 600px;
  top: -10%;
  right: -5%;
  background: radial-gradient(circle, rgba(0, 194, 255, 0.18) 0%, transparent 70%);
  animation: orb-float-1 25s ease-in-out infinite;
}

.hero::after {
  width: 450px;
  height: 450px;
  bottom: -5%;
  left: 10%;
  background: radial-gradient(circle, rgba(120, 80, 255, 0.12) 0%, transparent 70%);
  animation: orb-float-2 30s ease-in-out infinite;
}

@keyframes orb-float-1 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%      { transform: translate(-40px, 30px) scale(1.05); }
  66%      { transform: translate(20px, -20px) scale(0.95); }
}

@keyframes orb-float-2 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50%      { transform: translate(30px, -40px) scale(1.08); }
}

.hero__content {
  max-width: 720px;
  position: relative;
  z-index: 1;
}

.hero__tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-accent);
  background: var(--color-accent-glow);
  padding: var(--space-xs) var(--space-md);
  border-radius: 999px;
  border: 1px solid rgba(0, 194, 255, 0.2);
  margin-bottom: var(--space-xl);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.hero__title {
  font-size: var(--text-5xl);
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  letter-spacing: -0.03em;
  margin-bottom: var(--space-lg);
}

.hero__title em {
  font-style: normal;
  color: var(--color-accent);
}

.hero__subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  line-height: var(--leading-normal);
  max-width: 560px;
  margin-bottom: var(--space-2xl);
}

.hero__actions {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

/* --- Buttons --- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  font-size: var(--text-sm);
  font-weight: var(--weight-semi);
  padding: var(--space-md) var(--space-xl);
  border-radius: var(--radius-md);
  transition: all var(--duration) var(--ease-out);
  letter-spacing: 0.01em;
}

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

.btn--primary:hover,
.btn--primary:focus-visible {
  background: var(--color-accent-hover);
  box-shadow: 0 0 24px var(--color-accent-glow);
}

.btn--ghost {
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border-light);
}

.btn--ghost:hover,
.btn--ghost:focus-visible {
  color: var(--color-text-primary);
  border-color: var(--color-text-muted);
}

/* --- Service Cards --- */

.services {
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.services__header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.services__label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--space-md);
}

.services__title {
  font-size: var(--text-3xl);
  font-weight: var(--weight-bold);
  letter-spacing: -0.02em;
}

.card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  transition: border-color var(--duration) var(--ease-out),
              box-shadow var(--duration) var(--ease-out);
}

.card:hover {
  border-color: var(--color-border-light);
  box-shadow: 0 4px 32px rgba(0, 0, 0, 0.3);
}

.card__icon {
  width: 100%;
  height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-xl);
  color: var(--color-accent);
}

.card__icon svg {
  width: 100%;
  height: 100%;
}

/* --- Card SVG Animations --- */

/* Data Engineering: flowing data blocks */
@keyframes data-flow {
  0%   { transform: translateX(-20px); opacity: 0; }
  15%  { opacity: 1; }
  85%  { opacity: 1; }
  100% { transform: translateX(20px); opacity: 0; }
}

.card__icon--pipeline .data-block:nth-child(1) { animation: data-flow 3s ease-in-out infinite; }
.card__icon--pipeline .data-block:nth-child(2) { animation: data-flow 3s ease-in-out 0.4s infinite; }
.card__icon--pipeline .data-block:nth-child(3) { animation: data-flow 3s ease-in-out 0.8s infinite; }

/* API Customization: pulsing connection dot */
@keyframes endpoint-pulse {
  0%, 100% { r: 4; opacity: 0.8; }
  50%      { r: 7; opacity: 1; }
}

.card__icon--api .pulse-dot {
  animation: endpoint-pulse 2s ease-in-out infinite;
}

/* Real-time Analytics: self-drawing waveform */
@keyframes draw-wave {
  from { stroke-dashoffset: 200; }
  to   { stroke-dashoffset: 0; }
}

.card__icon--analytics .wave-line {
  stroke-dasharray: 200;
  animation: draw-wave 3s ease-in-out infinite;
}

/* Scanning line that follows the waveform */
@keyframes scan-line {
  0%   { transform: translateX(0); opacity: 0; }
  10%  { opacity: 0.6; }
  90%  { opacity: 0.6; }
  100% { transform: translateX(160px); opacity: 0; }
}

.card__icon--analytics .scan {
  animation: scan-line 3s ease-in-out infinite;
}

.card__title {
  font-size: var(--text-xl);
  font-weight: var(--weight-semi);
  margin-bottom: var(--space-md);
}

.card__description {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-normal);
}

/* --- Technical DNA / Code Block --- */

.tech-dna {
  overflow: hidden;
}

.tech-dna__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

.tech-dna__label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--space-md);
}

.tech-dna__title {
  font-size: var(--text-3xl);
  font-weight: var(--weight-bold);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-lg);
}

.tech-dna__text {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: var(--leading-normal);
}

.code-block {
  background: var(--color-bg-code);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.code-block__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--color-border);
  background: rgba(255, 255, 255, 0.02);
}

.code-block__dots {
  display: flex;
  gap: var(--space-sm);
}

.code-block__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-text-muted);
  opacity: 0.4;
}

.code-block__dot--red    { background: #FF5F57; opacity: 0.8; }
.code-block__dot--yellow { background: #FFBD2E; opacity: 0.8; }
.code-block__dot--green  { background: #28CA41; opacity: 0.8; }

.code-block__file {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.code-block__body {
  padding: var(--space-lg);
  overflow-x: auto;
}

.code-block__body pre {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-text-secondary);
  white-space: pre;
  tab-size: 2;
}

/* Syntax highlighting tokens */
.token--key     { color: #7DD3FC; }
.token--string  { color: #86EFAC; }
.token--number  { color: #FCA5A5; }
.token--bool    { color: #C4B5FD; }
.token--brace   { color: var(--color-text-muted); }
.token--comment { color: var(--color-text-muted); font-style: italic; }

/* --- Footer --- */

.footer {
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-2xl);
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer__left {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.footer__brand {
  font-size: var(--text-sm);
  font-weight: var(--weight-semi);
}

.footer__copy {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.footer__links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.footer__link {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  transition: color var(--duration) var(--ease-out);
}

.footer__link:hover {
  color: var(--color-text-primary);
}

.footer__status {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-success);
}

.footer__status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-success);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.4; }
}

/* --- Data Stream Divider --- */

.data-divider {
  width: 100%;
  height: 40px;
  display: block;
  overflow: visible;
  position: relative;
  z-index: 1;
}

@keyframes packet-travel {
  0%   { transform: translateX(-20px); opacity: 0; }
  5%   { opacity: 1; }
  95%  { opacity: 1; }
  100% { transform: translateX(calc(100vw + 20px)); opacity: 0; }
}

.data-divider .packet {
  animation: packet-travel 4s linear infinite;
}

.data-divider .packet:nth-child(2) { animation-delay: 1s; }
.data-divider .packet:nth-child(3) { animation-delay: 2s; }
.data-divider .packet:nth-child(4) { animation-delay: 3s; }

/* --- Contact Section Glow --- */

.contact {
  position: relative;
  overflow: hidden;
  text-align: center;
}

.contact::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 500px;
  height: 500px;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, rgba(0, 194, 255, 0.08) 0%, transparent 60%);
  pointer-events: none;
  animation: contact-glow 4s ease-in-out infinite;
}

@keyframes contact-glow {
  0%, 100% { opacity: 0.6; transform: translate(-50%, -50%) scale(1); }
  50%      { opacity: 1; transform: translate(-50%, -50%) scale(1.15); }
}