/* --- ROOT VARIABLES --- */
:root {
  --bg-primary: #020617;
  --bg-elevated: rgba(15, 23, 42, 0.9);
  --bg-elevated-soft: rgba(15, 23, 42, 0.7);
  --border-subtle: rgba(148, 163, 184, 0.5);
  --text-primary: #e5e7eb;
  --text-muted: #9ca3af;
  --accent: #a855f7;
  --accent-soft: rgba(168, 85, 247, 0.15);
  --shadow-soft: 0 22px 45px rgba(15, 23, 42, 0.85);
  --radius-lg: 18px;
  --radius-pill: 999px;
  --spacing-page: 24px;
  --max-width-page: 1120px;
  --line-subtle: rgba(148, 163, 184, 0.25);
}

/* --- BASE RESET & TYPOGRAPHY --- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  min-height: 100vh;
  font-family: "Outfit", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top, rgba(56, 189, 248, 0.15), transparent 55%),
    radial-gradient(circle at bottom, rgba(168, 85, 247, 0.18), transparent 50%),
    var(--bg-primary);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background: radial-gradient(circle at 10% 0%, rgba(15, 23, 42, 0.85), transparent 55%);
  pointer-events: none;
  mix-blend-mode: multiply;
  z-index: -1;
}

a {
  color: inherit;
  text-decoration: none;
}

/* --- ACCESSIBILITY & INTERACTIONS --- */
:focus-visible {
  outline: 2px solid rgba(56, 189, 248, 0.7);
  outline-offset: 3px;
  border-radius: 10px;
}

img {
  max-width: 100%;
  display: block;
}

ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

/* --- LAYOUT --- */
.page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  gap: 64px;
  padding: var(--spacing-page);
}

@media (min-width: 768px) {
  .page {
    padding: 40px;
  }
}

/* --- HERO SECTION --- */
.hero {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-content {
  width: 100%;
  max-width: var(--max-width-page);
  margin-inline: auto;
  padding: 28px 22px 32px;
  border-radius: 24px;
  background: linear-gradient(
      135deg,
      rgba(15, 23, 42, 0.98),
      rgba(15, 23, 42, 0.88)
    );
  border: 1px solid rgba(148, 163, 184, 0.35);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(26px);
  -webkit-backdrop-filter: blur(26px);
  position: relative;
  overflow: hidden;
}

.hero-content::before {
  content: "";
  position: absolute;
  inset: -40%;
  background:
    radial-gradient(circle at 0% 0%, rgba(56, 189, 248, 0.25), transparent 60%),
    radial-gradient(circle at 100% 100%, rgba(168, 85, 247, 0.26), transparent 55%);
  opacity: 0.17;
  z-index: -1;
}

.hero-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 10px;
}

.hero-kicker {
  font-size: 0.85rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin: 0;
}

.lang-toggle {
  appearance: none;
  border: 1px solid rgba(148, 163, 184, 0.35);
  background: rgba(2, 6, 23, 0.25);
  color: rgba(226, 232, 240, 0.92);
  border-radius: var(--radius-pill);
  padding: 8px 10px;
  font: inherit;
  font-size: 0.85rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition:
    transform 180ms ease-out,
    background 180ms ease-out,
    border-color 180ms ease-out;
}

.lang-toggle-icon {
  width: 16px;
  height: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: rgba(226, 232, 240, 0.85);
}

.lang-toggle-label {
  line-height: 1;
}

.lang-toggle:hover {
  transform: translateY(-1px);
  background: rgba(2, 6, 23, 0.35);
  border-color: rgba(226, 232, 240, 0.5);
}

.hero-title {
  font-size: clamp(2.4rem, 5vw, 3.4rem);
  line-height: 1.05;
  font-weight: 600;
  margin: 0 0 14px;
}

.hero-text {
  max-width: 40rem;
  color: var(--text-muted);
  font-size: 0.98rem;
  line-height: 1.7;
  margin: 0 0 24px;
}

.hero-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.hero-actions .btn-hero {
  width: 100%;
}

@media (max-width: 420px) {
  .hero-actions {
    grid-template-columns: 1fr;
  }
}

.btn-hero {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 18px;
  border-radius: var(--radius-pill);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border: 1px solid transparent;
  position: relative;
  overflow: hidden;
  transition:
    background 180ms ease-out,
    border-color 180ms ease-out,
    transform 180ms ease-out,
    box-shadow 180ms ease-out,
    color 180ms ease-out;
}

.btn-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 0% 0%, rgba(255, 255, 255, 0.18), transparent 55%);
  opacity: 0;
  transition: opacity 200ms ease-out;
}

.btn-ghost {
  background: var(--bg-elevated-soft);
  border-color: var(--border-subtle);
  color: var(--text-primary);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.7);
}

.btn-ghost:hover {
  border-color: rgba(226, 232, 240, 0.9);
  background: linear-gradient(
    135deg,
    rgba(15, 23, 42, 0.95),
    rgba(15, 23, 42, 0.75)
  );
  transform: translateY(-1px);
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.9);
}

.btn-ghost:hover::before {
  opacity: 1;
}

.btn-small {
  padding: 9px 14px;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
}

@media (min-width: 768px) {
  .hero-content {
    padding: 38px 36px 40px;
  }

  .hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
  }

  .hero-actions .btn-hero {
    width: auto;
  }

  .btn-hero {
    padding-inline: 22px;
  }
}

/* --- TECH STACK GRID --- */
.stack {
  width: 100%;
  max-width: var(--max-width-page);
  margin-inline: auto;
}

.section-header {
  margin-bottom: 24px;
}

.section-eyebrow {
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin: 0 0 8px;
}

.section-title {
  font-size: 1.4rem;
  margin: 0 0 8px;
}

.section-description {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.stack-grid {
  margin-top: 18px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.stack-card {
  padding: 16px 16px 18px;
  border-radius: var(--radius-lg);
  background: linear-gradient(
    135deg,
    rgba(15, 23, 42, 0.96),
    rgba(15, 23, 42, 0.82)
  );
  border: 1px solid rgba(148, 163, 184, 0.35);
  box-shadow: 0 14px 32px rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.stack-card-title {
  font-size: 1rem;
  margin: 0 0 4px;
}

.stack-card-subtitle {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin: 0 0 10px;
}

.stack-card-list li {
  font-size: 0.9rem;
  color: var(--text-primary);
  line-height: 1.6;
  position: relative;
  padding-left: 14px;
}

.stack-card-list li + li {
  margin-top: 4px;
}

.stack-card-list li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 0.7em;
  width: 4px;
  height: 4px;
  border-radius: 999px;
  background: var(--accent);
}

@media (min-width: 640px) {
  .stack-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }
}

@media (min-width: 1024px) {
  .stack-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* --- ABOUT SECTION --- */
.about {
  width: 100%;
  max-width: var(--max-width-page);
  margin-inline: auto;
}

.about-grid {
  margin-top: 18px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.about-highlights {
  margin-top: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.about-highlights:empty {
  display: none;
}

.about-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: var(--radius-pill);
  background: rgba(2, 6, 23, 0.25);
  border: 1px solid rgba(148, 163, 184, 0.22);
  color: rgba(226, 232, 240, 0.94);
  font-size: 0.9rem;
  line-height: 1.2;
}

.about-pill-label {
  color: var(--text-muted);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.info-card {
  padding: 16px 16px 18px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.95), rgba(15, 23, 42, 0.8));
  border: 1px solid rgba(148, 163, 184, 0.35);
  box-shadow: 0 14px 32px rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.info-card-title {
  margin: 0 0 10px;
  font-size: 1rem;
}

.info-card-subtitle {
  margin: 0 0 10px;
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.5;
}

.info-list {
  display: grid;
  gap: 10px;
  margin: 0;
}

.info-row {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 12px;
  align-items: baseline;
}

.info-row dt {
  color: var(--text-muted);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin: 0;
}

.info-row dd {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.5;
}

.info-bullets li {
  font-size: 0.9rem;
  color: var(--text-primary);
  line-height: 1.6;
  position: relative;
  padding-left: 14px;
}

.info-bullets li + li {
  margin-top: 6px;
}

.info-bullets li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 0.7em;
  width: 4px;
  height: 4px;
  border-radius: 999px;
  background: rgba(56, 189, 248, 0.9);
}

.experience {
  display: grid;
  gap: 14px;
}

.experience-item {
  padding: 14px 14px 16px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.92), rgba(15, 23, 42, 0.74));
  border: 1px solid rgba(148, 163, 184, 0.28);
  box-shadow: 0 14px 32px rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition:
    transform 180ms ease-out,
    box-shadow 180ms ease-out,
    border-color 180ms ease-out;
}

.experience-item:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.85);
  border-color: rgba(226, 232, 240, 0.38);
}

.experience-item:focus-within {
  transform: translateY(-1px);
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.85);
  border-color: rgba(226, 232, 240, 0.38);
}

.experience-item:focus-visible {
  outline: 2px solid rgba(56, 189, 248, 0.55);
  outline-offset: 3px;
}

.experience-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 10px;
}

.experience-role {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 500;
}

.experience-meta {
  margin: 0;
  color: rgba(226, 232, 240, 0.92);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 6px 10px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(56, 189, 248, 0.35);
  background: rgba(2, 6, 23, 0.28);
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.experience-meta-icon {
  width: 14px;
  height: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: rgba(226, 232, 240, 0.88);
}

.experience-impact {
  margin: 0 0 12px;
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.6;
}

.experience-item .info-bullets li + li {
  margin-top: 4px;
}

@media (min-width: 900px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .info-list {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
  }
  .experience {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* --- PROJECTS SECTION --- */
.projects {
  width: 100%;
  max-width: var(--max-width-page);
  margin-inline: auto;
}

.section-glow {
  position: relative;
}

.section-glow::after {
  content: "";
  position: absolute;
  inset: -10px;
  border-radius: 28px;
  background:
    radial-gradient(circle at 25% 15%, rgba(56, 189, 248, 0.18), transparent 55%),
    radial-gradient(circle at 85% 70%, rgba(168, 85, 247, 0.16), transparent 60%);
  opacity: 0;
  transform: scale(0.985);
  pointer-events: none;
}

.section-glow.is-pulsing::after {
  animation: sectionPulse 900ms ease-out 1;
}

@keyframes sectionPulse {
  0% {
    opacity: 0;
    transform: scale(0.985);
  }
  45% {
    opacity: 1;
    transform: scale(1);
  }
  100% {
    opacity: 0;
    transform: scale(0.992);
  }
}

.project-timeline {
  position: relative;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.project-node {
  position: relative;
  padding-left: 18px;
}

.project-node::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 18px;
  bottom: -14px;
  width: 1px;
  background: linear-gradient(to bottom, rgba(168, 85, 247, 0.55), transparent);
}

.project-node:last-child::before {
  bottom: 18px;
}

.project-node::after {
  content: "";
  position: absolute;
  left: 2px;
  top: 16px;
  width: 9px;
  height: 9px;
  border-radius: 999px;
  background: rgba(168, 85, 247, 0.9);
  box-shadow: 0 0 0 6px rgba(168, 85, 247, 0.12);
}

.project-node--featured::after {
  background: rgba(56, 189, 248, 0.95);
  box-shadow: 0 0 0 8px rgba(56, 189, 248, 0.14);
}

.project-card {
  padding: 16px 16px 18px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.96), rgba(15, 23, 42, 0.8));
  border: 1px solid rgba(148, 163, 184, 0.35);
  box-shadow: 0 14px 34px rgba(15, 23, 42, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition:
    transform 180ms ease-out,
    box-shadow 180ms ease-out,
    border-color 180ms ease-out;
}

.project-card:hover,
.project-card:focus-within {
  transform: translateY(-1px);
  box-shadow: 0 18px 42px rgba(15, 23, 42, 0.9);
  border-color: rgba(226, 232, 240, 0.4);
}

.project-card:focus-visible {
  outline: 2px solid rgba(56, 189, 248, 0.55);
  outline-offset: 3px;
}

.project-topline {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 10px;
}

.project-pill {
  margin: 0;
  display: inline-flex;
  align-items: center;
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 6px 10px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(148, 163, 184, 0.35);
  background: rgba(2, 6, 23, 0.28);
  color: rgba(226, 232, 240, 0.9);
  white-space: nowrap;
}

.project-badge {
  margin: 0;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  padding: 6px 10px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(56, 189, 248, 0.45);
  background: rgba(2, 6, 23, 0.35);
  color: rgba(226, 232, 240, 0.92);
}

.project-badge--muted {
  border-color: rgba(148, 163, 184, 0.4);
  color: rgba(203, 213, 225, 0.9);
}

.project-date {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.85rem;
  letter-spacing: 0.04em;
}

.project-title {
  margin: 0 0 8px;
  font-size: 1.1rem;
}

.project-context {
  margin: 0 0 12px;
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.6;
}

.project-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.highlight-grid {
  margin-top: 18px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.highlight-card {
  padding: 14px 14px 16px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.9), rgba(15, 23, 42, 0.7));
  border: 1px solid rgba(148, 163, 184, 0.28);
}

.highlight-title {
  margin: 0 0 6px;
  font-size: 0.95rem;
}

.highlight-text {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

@media (min-width: 900px) {
  .project-timeline {
    gap: 20px;
  }

  .project-timeline::before {
    content: "";
    position: absolute;
    top: 6px;
    bottom: 6px;
    left: 50%;
    width: 1px;
    transform: translateX(-0.5px);
    background: linear-gradient(
      to bottom,
      rgba(56, 189, 248, 0.28),
      rgba(168, 85, 247, 0.38),
      rgba(148, 163, 184, 0.18)
    );
  }

  .project-node {
    padding-left: 0;
    display: grid;
    grid-template-columns: 1fr 64px 1fr;
    align-items: start;
  }

  .project-node::before {
    display: none;
  }

  .project-node::after {
    left: 50%;
    transform: translateX(-50%);
    top: 26px;
  }

  .project-card {
    grid-column: 1;
    max-width: 520px;
    justify-self: end;
  }

  .project-node:nth-child(even) .project-card {
    grid-column: 3;
    justify-self: start;
  }

  .project-topline {
    justify-content: flex-start;
    gap: 12px;
  }

  .project-node:nth-child(even) .project-topline {
    justify-content: flex-end;
  }

  .project-node:nth-child(even) .project-date {
    order: -1;
  }

  .highlight-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
  }
}

/* --- CONTACT SECTION --- */
.contact {
  width: 100%;
  max-width: var(--max-width-page);
  margin-inline: auto;
  padding-bottom: 24px;
}

.contact-panel {
  margin-top: 18px;
  padding: 18px;
  border-radius: 22px;
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.92), rgba(15, 23, 42, 0.72));
  border: 1px solid rgba(148, 163, 184, 0.28);
  box-shadow: 0 16px 42px rgba(15, 23, 42, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.contact-columns {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.contact-col {
  padding: 12px 12px 14px;
  border-radius: var(--radius-lg);
  background: rgba(2, 6, 23, 0.18);
  border: 1px solid rgba(148, 163, 184, 0.18);
}

.contact-title {
  margin: 0 0 10px;
  font-size: 1rem;
}

.contact-links {
  display: grid;
  gap: 10px;
}

.contact-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 14px;
  background: rgba(2, 6, 23, 0.25);
  border: 1px solid rgba(148, 163, 184, 0.22);
  color: rgba(226, 232, 240, 0.94);
  transition:
    transform 180ms ease-out,
    border-color 180ms ease-out,
    background 180ms ease-out;
}

.contact-icon {
  width: 18px;
  height: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: rgba(226, 232, 240, 0.86);
  flex: 0 0 18px;
}

.contact-icon svg {
  display: block;
}

.contact-text {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.contact-link:hover {
  transform: translateY(-1px);
  border-color: rgba(226, 232, 240, 0.5);
  background: rgba(2, 6, 23, 0.35);
}

.contact-footnote {
  margin: 18px 0 0;
  color: var(--text-muted);
  font-size: 0.9rem;
  text-align: center;
}

@media (min-width: 900px) {
  .contact-panel {
    padding: 22px;
  }

  .contact-columns {
    grid-template-columns: 1.25fr 1fr;
    gap: 18px;
  }
}