/* ===== Design tokens ===== */
:root {
  --teal: #17a2b8;
  --teal-dark: #117a8b;
  --ink: #344767; /* Soft-UI dark */
  --gray: #67748e; /* Soft-UI gray */
  --bg: #f8f9fa;
  --white: #ffffff;
  --line: #e9edf3;
  --radius: 1.25rem;
  --shadow: 0 20px 45px rgba(52, 71, 103, 0.12);
  --font: "Nunito", system-ui, sans-serif;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font);
  color: var(--gray);
  background: var(--bg);
  line-height: 1.7;
  overflow-x: hidden;
}
h1,
h2,
h3,
h4 {
  color: var(--ink);
  font-weight: 800;
  line-height: 1.2;
}
img {
  display: block;
  max-width: 100%;
}
a {
  text-decoration: none;
  color: inherit;
}
section {
  padding: 7rem 0;
  scroll-margin-top: 80px;
  position: relative;
}
.container {
  width: min(1140px, 92%);
  margin-inline: auto;
}
.teal {
  color: var(--teal);
}
::selection {
  background: rgba(23, 162, 184, 0.25);
}

/* Section headers */
.overline {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 0.9rem;
}
.sec-title {
  font-size: clamp(1.9rem, 4vw, 2.7rem);
  margin-bottom: 1rem;
}
.sec-sub {
  max-width: 560px;
  font-size: 1.02rem;
}
.sec-head.center {
  text-align: center;
}
.sec-head.center .sec-sub {
  margin-inline: auto;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.7rem;
  border-radius: 999px;
  font-weight: 800;
  font-size: 0.92rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition:
    transform 0.3s,
    box-shadow 0.3s,
    background 0.3s,
    color 0.3s;
}
.btn-solid {
  background: var(--teal);
  color: #fff;
  box-shadow: 0 12px 26px rgba(23, 162, 184, 0.35);
}
.btn-solid:hover {
  transform: translateY(-3px);
  background: var(--teal-dark);
}
.btn-ghost {
  border-color: rgba(52, 71, 103, 0.25);
  color: var(--ink);
  background: rgba(255, 255, 255, 0.6);
}
.btn-ghost:hover {
  transform: translateY(-3px);
  border-color: var(--teal);
  color: var(--teal);
}

/* ===== Loader ===== */
#loader {
  position: fixed;
  inset: 0;
  background: var(--white);
  z-index: 1000;
  display: grid;
  place-items: center;
  transition:
    opacity 0.6s,
    visibility 0.6s;
}
#loader.done {
  opacity: 0;
  visibility: hidden;
}
.loader-mark {
  width: 74px;
}
.loader-mark path {
  stroke-dasharray: 120;
  stroke-dashoffset: 120;
  animation: draw 1.1s ease forwards;
}
.loader-name {
  margin-top: 0.8rem;
  font-weight: 900;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  font-size: 0.8rem;
  color: var(--ink);
  animation: fadeUp 1s 0.3s both;
}
@keyframes draw {
  to {
    stroke-dashoffset: 0;
  }
}
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ===== Custom cursor (fine pointers only) ===== */
.cursor-dot,
.cursor-ring {
  position: fixed;
  top: 0;
  left: 0;
  pointer-events: none;
  z-index: 999;
  border-radius: 50%;
}
.cursor-dot {
  width: 6px;
  height: 6px;
  background: var(--teal);
  margin: -3px 0 0 -3px;
}
.cursor-ring {
  width: 36px;
  height: 36px;
  border: 1.5px solid rgba(23, 162, 184, 0.5);
  margin: -18px 0 0 -18px;
  transition:
    width 0.25s,
    height 0.25s,
    margin 0.25s,
    background 0.25s;
}
.cursor-ring.hover {
  width: 56px;
  height: 56px;
  margin: -28px 0 0 -28px;
  background: rgba(23, 162, 184, 0.08);
}
@media (pointer: coarse) {
  .cursor-dot,
  .cursor-ring {
    display: none;
  }
}

/* 3D hover tooltip */
#tooltip {
  position: fixed;
  z-index: 998;
  pointer-events: none;
  background: var(--ink);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.4rem 0.8rem;
  border-radius: 999px;
  opacity: 0;
  transform: translate(-50%, -140%);
  transition: opacity 0.2s;
  white-space: nowrap;
}
#tooltip.show {
  opacity: 1;
}

/* ===== Nav ===== */
#nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  transition:
    background 0.4s,
    box-shadow 0.4s,
    backdrop-filter 0.4s;
}
#nav.scrolled {
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(14px);
  box-shadow: 0 8px 30px rgba(52, 71, 103, 0.08);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 900;
  font-size: 1.25rem;
  color: var(--ink);
  letter-spacing: -0.02em;
}
.brand svg {
  width: 34px;
  height: 34px;
}
#navLinks {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}
#navLinks a {
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--gray);
  position: relative;
  transition: color 0.3s;
}
#navLinks a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 0;
  height: 2px;
  background: var(--teal);
  border-radius: 2px;
  transition: width 0.3s;
}
#navLinks a:hover,
#navLinks a.active {
  color: var(--ink);
}
#navLinks a:hover::after,
#navLinks a.active::after {
  width: 100%;
}
.nav-cta {
  background: var(--teal);
  color: #fff !important;
  padding: 0.55rem 1.3rem;
  border-radius: 999px;
  box-shadow: 0 8px 20px rgba(23, 162, 184, 0.3);
}
.nav-cta::after {
  display: none;
}
#navToggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
#navToggle span {
  width: 24px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: 0.3s;
}

/* ===== Hero ===== */
#hero {
  height: 100vh;
  min-height: 640px;
  position: relative;
  overflow: hidden;
  padding: 0;
}
#officeCanvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}
.hero-fade {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 36%;
  background: linear-gradient(to top, rgba(248, 249, 250, 0.92), transparent);
  pointer-events: none;
}
.hero-content {
  position: absolute;
  left: 6%;
  bottom: 11%;
  max-width: 620px;
  z-index: 2;
  pointer-events: none;
}
.hero-content .btn,
.hero-content a {
  pointer-events: auto;
}
.hero-content h1 {
  font-size: clamp(2.6rem, 6.2vw, 4.6rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  margin: 0.4rem 0 0.8rem;
}
.hero-title {
  font-size: clamp(1.05rem, 2vw, 1.4rem);
  font-weight: 700;
  color: var(--ink);
}
#typed {
  color: var(--teal);
}
.caret {
  display: inline-block;
  width: 3px;
  height: 1.1em;
  background: var(--teal);
  margin-left: 3px;
  vertical-align: -0.15em;
  animation: blink 1s steps(1) infinite;
}
@keyframes blink {
  50% {
    opacity: 0;
  }
}
.hero-quote {
  margin: 1rem 0 1.8rem;
  font-style: italic;
  color: var(--gray);
}
.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}
.scroll-hint {
  position: absolute;
  bottom: 26px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  width: 26px;
  height: 42px;
  border: 2px solid rgba(52, 71, 103, 0.35);
  border-radius: 14px;
}
.scroll-hint::after {
  content: "";
  position: absolute;
  top: 7px;
  left: 50%;
  width: 4px;
  height: 8px;
  margin-left: -2px;
  border-radius: 4px;
  background: var(--teal);
  animation: wheel 1.6s ease infinite;
}
@keyframes wheel {
  0% {
    transform: translateY(0);
    opacity: 1;
  }
  70% {
    transform: translateY(14px);
    opacity: 0;
  }
  100% {
    opacity: 0;
  }
}

/* ===== Reveal on scroll ===== */
.reveal {
  opacity: 0;
  transform: translateY(34px);
  transition:
    opacity 0.8s ease,
    transform 0.8s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ===== Tilt cards ===== */
[data-tilt] {
  transition:
    transform 0.4s ease,
    box-shadow 0.4s ease;
  transform-style: preserve-3d;
  will-change: transform;
}

/* ===== About ===== */
#about {
  background: var(--white);
}
.about-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 4.5rem;
  align-items: center;
}
.portrait-card {
  position: relative;
  background: linear-gradient(160deg, #e8f6f9, #fff);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 2.4rem;
}
.portrait-card::before {
  content: "";
  position: absolute;
  top: -22px;
  right: -22px;
  width: 110px;
  height: 110px;
  border-radius: 32px;
  background: rgba(23, 162, 184, 0.14);
  z-index: 0;
}
.portrait-card svg {
  position: relative;
  z-index: 1;
  width: 100%;
  height: auto;
  border-radius: 1rem;
}
.badge {
  position: absolute;
  left: 50%;
  bottom: -18px;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--ink);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  padding: 0.55rem 1.1rem;
  border-radius: 999px;
  box-shadow: 0 12px 26px rgba(52, 71, 103, 0.35);
  white-space: nowrap;
}
.badge .pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--teal);
  animation: pulse 1.8s ease infinite;
}
@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(23, 162, 184, 0.6);
  }
  70% {
    box-shadow: 0 0 0 9px rgba(23, 162, 184, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(23, 162, 184, 0);
  }
}
.about-text p {
  margin-bottom: 1.1rem;
}
.edu {
  margin: 1.6rem 0;
  display: grid;
  gap: 1rem;
}
.edu-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}
.edu-dot {
  flex: none;
  width: 12px;
  height: 12px;
  margin-top: 0.45rem;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 0 5px rgba(23, 162, 184, 0.15);
}
.edu-item h4 {
  font-size: 1rem;
}
.edu-item span {
  font-size: 0.85rem;
  color: var(--gray);
}
.philosophy {
  border-left: 4px solid var(--teal);
  background: rgba(23, 162, 184, 0.06);
  padding: 1.2rem 1.5rem;
  border-radius: 0 1rem 1rem 0;
  font-style: italic;
  color: var(--ink);
}
.about-me-img {
  border-radius: 8px;
}

/* ===== Services ===== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.8rem;
  margin-top: 3.5rem;
}
.service-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 2.4rem 2rem;
  box-shadow: 0 10px 30px rgba(52, 71, 103, 0.07);
  border: 1px solid var(--line);
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--teal), transparent);
  opacity: 0;
  transition: opacity 0.4s;
}
.service-card:hover::before {
  opacity: 1;
}
.service-card:hover {
  box-shadow: var(--shadow);
}
.s-icon {
  width: 58px;
  height: 58px;
  border-radius: 18px;
  background: rgba(23, 162, 184, 0.12);
  display: grid;
  place-items: center;
  margin-bottom: 1.4rem;
}
.s-icon svg {
  width: 28px;
  height: 28px;
  stroke: var(--teal);
  fill: none;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.service-card h3 {
  font-size: 1.2rem;
  margin-bottom: 0.6rem;
}
.service-card p {
  font-size: 0.94rem;
}

/* ===== Tech stack globe ===== */
#stack {
  background: var(--white);
}
.stack-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.6rem;
}
.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.42rem 0.95rem;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--ink);
}
.chip i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--teal);
}
#globeWrap {
  display: grid;
  place-items: center;
}
#globeCanvas {
  touch-action: none;
  cursor: grab;
}
#globeCanvas:active {
  cursor: grabbing;
}

/* ===== Portfolio ===== */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.8rem;
  margin-top: 3.5rem;
}
.project-card {
  display: block;
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(52, 71, 103, 0.07);
  border: 1px solid var(--line);
}
.project-card:hover {
  box-shadow: var(--shadow);
}
.pc-media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/10;
}
.pc-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.project-card:hover .pc-media img {
  transform: scale(1.07);
}
.pc-arrow {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.9);
  display: grid;
  place-items: center;
  color: var(--teal);
  opacity: 0;
  transform: translateY(-8px);
  transition: 0.4s;
}
.project-card:hover .pc-arrow {
  opacity: 1;
  transform: none;
}
.pc-body {
  padding: 1.3rem 1.5rem 1.5rem;
}
.pc-body h3 {
  font-size: 1.08rem;
}
.pc-body p {
  font-size: 0.83rem;
  color: var(--teal);
  font-weight: 700;
}

/* ===== Contact: the book ===== */
#contact {
  background: var(--white);
}
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 4rem;
  align-items: center;
}
.c-list {
  list-style: none;
  margin: 1.8rem 0;
  display: grid;
  gap: 1rem;
}
.c-list li {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  font-weight: 700;
  color: var(--ink);
  font-size: 0.95rem;
}
.c-list svg {
  width: 20px;
  height: 20px;
  stroke: var(--teal);
  fill: none;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex: none;
}
.socials {
  display: flex;
  gap: 0.8rem;
}
.socials a {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--bg);
  border: 1px solid var(--line);
  transition: 0.3s;
}
.socials a svg {
  width: 18px;
  height: 18px;
  fill: var(--ink);
  transition: 0.3s;
}
.socials a:hover {
  background: var(--teal);
  transform: translateY(-4px);
  box-shadow: 0 10px 20px rgba(23, 162, 184, 0.35);
}
.socials a:hover svg {
  fill: #fff;
}

.book-wrap {
  perspective: 1600px;
}
.book {
  position: relative;
  background: #fff;
  border-radius: 8px 18px 18px 8px;
  box-shadow:
    0 35px 70px rgba(52, 71, 103, 0.2),
    inset 0 0 0 1px #eef1f5;
  transform: rotateY(-9deg) rotateX(4deg);
  transform-origin: left center;
  transition: transform 0.9s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.book:hover,
.book:focus-within {
  transform: rotateY(0) rotateX(0);
}
.book::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 14px;
  border-radius: 8px 0 0 8px;
  background: linear-gradient(180deg, var(--teal), var(--teal-dark));
}
/* Ruled page: one line every 36px — every field row is exactly 36px tall */
.page {
  padding: 36px 40px 44px 56px;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0,
    transparent 35px,
    #e7edf3 35px,
    #e7edf3 36px
  );
  border-radius: inherit;
}
.page h3 {
  height: 36px;
  line-height: 36px;
  font-size: 1.25rem;
}
.page .hint {
  height: 36px;
  line-height: 36px;
  font-size: 0.85rem;
  color: var(--gray);
}
.field {
  display: flex;
  align-items: flex-end;
  gap: 14px;
  height: 36px;
}
.field label {
  flex: none;
  width: 74px;
  font-size: 0.66rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--teal);
  padding-bottom: 7px;
}
.field input,
.field textarea {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  font-family: "Caveat", cursive;
  font-size: 1.5rem;
  color: var(--ink);
  height: 36px;
  line-height: 36px;
  padding: 7px 4px 0;
  caret-color: var(--teal);
}
.field.area {
  height: 108px;
  align-items: flex-start;
}
.field.area textarea {
  height: 108px;
  resize: none;
  padding-top: 8px;
}
.field input:focus,
.field textarea:focus {
  background: rgba(23, 162, 184, 0.04);
  border-radius: 6px;
}
.book .btn {
  margin-top: 20px;
  border: none;
}
.stamp {
  position: absolute;
  right: 26px;
  bottom: 26px;
  width: 96px;
  height: 96px;
  border: 3px solid var(--teal);
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: var(--teal);
  font-weight: 900;
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  transform: rotate(-14deg) scale(0);
  transition: transform 0.45s cubic-bezier(0.2, 1.6, 0.4, 1);
  pointer-events: none;
  background: rgba(255, 255, 255, 0.7);
}
.stamp.show {
  transform: rotate(-14deg) scale(1);
}

/* ===== Footer ===== */
footer {
  background: var(--ink);
  color: #aeb9cc;
  padding: 4.5rem 0 2.5rem;
  text-align: center;
}
.foot-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 900;
  font-size: 1.3rem;
  color: #fff;
}
.foot-name {
  margin-top: 1.2rem;
  color: #fff;
  font-weight: 800;
  font-size: 1.05rem;
}
.foot-quote {
  font-style: italic;
  font-size: 0.92rem;
  margin: 0.3rem 0 1.6rem;
}
footer .socials {
  justify-content: center;
}
footer .socials a {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.12);
}
footer .socials a svg {
  fill: #cfd8e6;
}
footer .socials a:hover {
  background: var(--teal);
}
footer .socials a:hover svg {
  fill: #fff;
}
footer hr {
  border: none;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin: 2.4rem auto 1.4rem;
  max-width: 520px;
}
footer .tiny {
  font-size: 0.8rem;
}
footer .tiny b {
  color: var(--teal);
}

/* ===== Responsive ===== */
@media (max-width: 992px) {
  .about-grid,
  .stack-grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .services-grid,
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .book {
    transform: none;
  }
}
@media (max-width: 860px) {
  #navToggle {
    display: flex;
  }
  #navLinks {
    position: fixed;
    top: 64px;
    right: 4%;
    flex-direction: column;
    align-items: stretch;
    background: #fff;
    border-radius: 1rem;
    box-shadow: var(--shadow);
    padding: 1.2rem 1.6rem;
    gap: 1.1rem;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: 0.35s;
  }
  #navLinks.open {
    opacity: 1;
    visibility: visible;
    transform: none;
  }
}
@media (max-width: 640px) {
  section {
    padding: 5rem 0;
  }
  .services-grid,
  .projects-grid {
    grid-template-columns: 1fr;
  }
  .hero-content {
    left: 5%;
    right: 5%;
    bottom: 9%;
  }
  .page {
    padding: 36px 24px 40px 40px;
  }
  .field label {
    width: 60px;
  }
}
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ===== Experience Map ===== */
#experience {
  background: var(--white);
}
.exp-map-wrap {
  position: relative;
  margin-top: 3rem;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  background: #f8f9fa;
}
#expMapCanvas {
  display: block;
  width: 100%;
  height: 500px;
  cursor: grab;
}
#expMapCanvas:active {
  cursor: grabbing;
}
.exp-info-card {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  padding: 1.2rem 2rem;
  border-radius: 1rem;
  box-shadow: 0 10px 30px rgba(52, 71, 103, 0.15);
  text-align: center;
  max-width: 400px;
  width: 90%;
  border: 1px solid var(--line);
  transition: all 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
  pointer-events: none;
  z-index: 10;
}
.exp-info-card h3 {
  font-size: 1.2rem;
  color: var(--teal);
  margin-bottom: 0.4rem;
}
.exp-info-card p {
  font-size: 0.9rem;
  color: var(--gray);
  margin: 0;
}
@media (max-width: 768px) {
  #expMapCanvas {
    height: 350px;
  }
  .exp-info-card {
    bottom: 10px;
    padding: 1rem 1.5rem;
  }
}