/* ===== Custom Properties ===== */
:root {
  --color-bg: #f9f8f6;
  --color-surface: #ffffff;
  --color-border: #e8e4df;
  --color-text: #1a1816;
  --color-body: #4a4540;
  --color-muted: #6b655e;
  --color-subtle: #9b9488;
  --color-tag-bg: #f3f1ee;
  --color-accent: #1a1816;
  --color-green: #2d6a4f;
  --color-green-light: #eaf4ee;
  --color-green-border: #d0e8d8;
  --color-green-hover: #245a42;
  --color-terra: #c56c3e;
  --color-terra-light: #fdf0ea;
  --color-terra-border: #f0d4c4;
  --color-terra-hover: #b05e34;
  --nav-height: 56px;
  --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'DM Sans', system-ui, -apple-system, sans-serif;
  font-size: clamp(14px, 0.9vw + 10px, 16px);
  line-height: 1.7;
  color: var(--color-body);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ===== Skip Link ===== */
.skip-link {
  position: absolute;
  left: -9999px;
  top: -9999px;
  clip: rect(0, 0, 0, 0);
  color: var(--color-surface);
  background: var(--color-green);
  padding: 8px 16px;
  text-decoration: none;
  font-size: 14px;
  z-index: 1000;
  border-radius: 4px;
}

.skip-link:focus {
  position: fixed;
  top: 8px;
  left: 8px;
  clip: auto;
}

/* ===== Typography ===== */
h1 {
  font-family: 'DM Serif Display', Georgia, 'Times New Roman', serif;
  font-size: clamp(40px, 5vw + 16px, 64px);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.05;
  color: var(--color-text);
}

h3 {
  font-family: 'DM Sans', system-ui, sans-serif;
}

.section-label {
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-green);
  margin-bottom: 32px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.section-label::after {
  content: "";
  height: 1px;
  flex: 1;
  background: var(--color-green-border);
  max-width: 60px;
}

.lead {
  font-size: clamp(17px, 1vw + 13px, 20px);
  color: var(--color-text);
  line-height: 1.65;
  margin-bottom: 16px;
}

/* ===== Container ===== */
.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Sections ===== */
.section {
  padding: clamp(64px, 8vw, 100px) 0;
  border-top: 1px solid var(--color-border);
  scroll-margin-top: calc(var(--nav-height) + 16px);
}

/* ===== Nav ===== */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(249, 248, 246, 0.92);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  height: var(--nav-height);
}

.nav-inner {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav-logo {
  font-family: 'DM Serif Display', Georgia, serif;
  font-size: 20px;
  font-weight: 400;
  color: var(--color-green);
  text-decoration: none;
  letter-spacing: -0.02em;
  transition: opacity 250ms var(--ease-out-quart);
}

.nav-logo:hover {
  opacity: 0.7;
}

.nav-links {
  display: flex;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-muted);
  text-decoration: none;
  position: relative;
  letter-spacing: 0.01em;
  transition: color 250ms var(--ease-out-quart);
}

.nav-links a.active {
  color: var(--color-green);
}

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

/* Nav underline */
.nav-links a::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 1.5px;
  background: var(--color-green);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 250ms var(--ease-out-quart);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  transform: scaleX(1);
}

/* ===== Hamburger ===== */
.nav-hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-hamburger span {
  display: block;
  width: 18px;
  height: 1.5px;
  background: var(--color-text);
  margin: 4px 0;
  transition: transform 250ms var(--ease-out-quart);
}

/* ===== Mobile Overlay ===== */
.nav-overlay {
  position: fixed;
  inset: 0;
  background: var(--color-bg);
  z-index: 200;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 32px;
  transform: translateX(100%);
  transition: transform 400ms var(--ease-out-expo);
}

.nav-overlay.open {
  transform: translateX(0);
}

.nav-overlay a {
  font-family: 'DM Serif Display', Georgia, serif;
  font-size: 24px;
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: -0.01em;
  transition: color 200ms var(--ease-out-quart);
}

.nav-overlay a:hover {
  color: var(--color-green);
}

.nav-close {
  position: absolute;
  top: 16px;
  right: 24px;
  background: none;
  border: none;
  font-size: 28px;
  cursor: pointer;
  color: var(--color-text);
  line-height: 1;
  transition: color 200ms var(--ease-out-quart);
}

.nav-close:hover {
  color: var(--color-terra);
}

/* ===== Floating Shapes ===== */
.floating-shapes {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}

.hero,
.skills-section,
.contact {
  position: relative;
}

.hero .container,
.skills-section .container,
.contact .container {
  position: relative;
  z-index: 1;
}

.shape {
  position: absolute;
  border-radius: 2px;
  opacity: 0;
}

@media (prefers-reduced-motion: no-preference) {
  .shape {
    opacity: 1;
    animation: float 20s var(--ease-out-quart) infinite alternate;
  }
}

/* Hero shapes — green tints */
.shape-1 {
  width: 60px;
  height: 60px;
  background: var(--color-green-light);
  border: 1px solid var(--color-green-border);
  top: 15%;
  right: 8%;
  border-radius: 12px;
  animation-duration: 18s;
  transform: rotate(12deg);
}

.shape-2 {
  width: 24px;
  height: 24px;
  background: var(--color-terra-light);
  border: 1px solid var(--color-terra-border);
  top: 60%;
  right: 15%;
  border-radius: 50%;
  animation-duration: 22s;
  animation-delay: -4s;
}

.shape-3 {
  width: 40px;
  height: 40px;
  border: 1.5px solid var(--color-green-border);
  top: 35%;
  right: 4%;
  border-radius: 8px;
  animation-duration: 25s;
  animation-delay: -8s;
  transform: rotate(-15deg);
}

.shape-4 {
  width: 16px;
  height: 16px;
  background: var(--color-green);
  opacity: 0.08;
  top: 75%;
  right: 25%;
  border-radius: 50%;
  animation-duration: 20s;
  animation-delay: -2s;
}

.shape-5 {
  width: 80px;
  height: 80px;
  border: 1px solid var(--color-green-border);
  top: 10%;
  right: 22%;
  border-radius: 16px;
  animation-duration: 28s;
  animation-delay: -6s;
  transform: rotate(25deg);
  opacity: 0.5;
}

.shape-6 {
  width: 12px;
  height: 12px;
  background: var(--color-terra);
  opacity: 0.12;
  top: 50%;
  right: 10%;
  border-radius: 3px;
  animation-duration: 16s;
  animation-delay: -10s;
  transform: rotate(45deg);
}

/* Skills shapes */
.shape-7 {
  width: 50px;
  height: 50px;
  border: 1.5px solid var(--color-green-border);
  top: 10%;
  left: 2%;
  border-radius: 10px;
  animation-duration: 22s;
  animation-delay: -3s;
  transform: rotate(20deg);
  opacity: 0.4;
}

.shape-8 {
  width: 20px;
  height: 20px;
  background: var(--color-terra-light);
  border: 1px solid var(--color-terra-border);
  bottom: 15%;
  right: 3%;
  border-radius: 50%;
  animation-duration: 18s;
  animation-delay: -7s;
}

/* Contact shapes */
.shape-9 {
  width: 36px;
  height: 36px;
  border: 1.5px solid var(--color-green-border);
  top: 20%;
  right: 5%;
  border-radius: 50%;
  animation-duration: 20s;
  animation-delay: -5s;
}

.shape-10 {
  width: 28px;
  height: 28px;
  background: var(--color-green-light);
  border: 1px solid var(--color-green-border);
  bottom: 25%;
  left: 3%;
  border-radius: 6px;
  animation-duration: 24s;
  animation-delay: -9s;
  transform: rotate(30deg);
  opacity: 0.6;
}

@keyframes float {
  0% {
    transform: var(--float-start, translateY(0) rotate(0deg));
  }
  25% {
    transform: translateY(-12px) rotate(3deg);
  }
  50% {
    transform: translateY(6px) rotate(-2deg);
  }
  75% {
    transform: translateY(-8px) rotate(4deg);
  }
  100% {
    transform: translateY(10px) rotate(-3deg);
  }
}

/* ===== Hero ===== */
.hero {
  padding-top: clamp(80px, 12vw, 140px);
  padding-bottom: clamp(60px, 8vw, 100px);
  scroll-margin-top: calc(var(--nav-height) + 16px);
}

.hero-label {
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-green);
  margin-bottom: 20px;
}

.hero-tagline {
  color: var(--color-body);
  margin-top: 24px;
  font-size: clamp(15px, 1vw + 11px, 18px);
  max-width: 440px;
  line-height: 1.6;
}


/* ===== Tags ===== */
.tag {
  display: inline-block;
  background: var(--color-tag-bg);
  color: var(--color-body);
  padding: 4px 12px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 500;
  border: 1px solid var(--color-border);
  transition: transform 200ms var(--ease-out-quart), background 200ms var(--ease-out-quart), color 200ms var(--ease-out-quart), border-color 200ms var(--ease-out-quart);
}

.tag:hover {
  transform: scale(1.04);
}

/* ===== Experience Cards ===== */
.card {
  background: transparent;
  border: none;
  border-radius: 0;
  padding: 28px 0;
  position: relative;
  border-bottom: 1px solid var(--color-border);
}

.card::before {
  content: "";
  position: absolute;
  left: -24px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
  transition: background 400ms var(--ease-out-expo);
}

.card::after {
  content: "";
  position: absolute;
  left: -28px;
  top: 36px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 2px solid var(--color-border);
  background: var(--color-bg);
  transition: border-color 400ms var(--ease-out-expo), background 400ms var(--ease-out-expo), transform 400ms var(--ease-out-expo);
}

.card:hover::before {
  background: var(--color-green);
}

.card:hover::after {
  border-color: var(--color-green);
  background: var(--color-green);
  transform: scale(1.3);
}

.card:first-child {
  padding-top: 0;
}

.card:first-child::after {
  top: 8px;
}

.card:last-child {
  border-bottom: none;
}

.card + .card {
  margin-top: 0;
}

/* Experience list needs left padding for timeline */
#experience .container {
  padding-left: 56px;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
}

.card-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: -0.01em;
  transition: color 300ms var(--ease-out-quart);
}

.card:hover .card-title {
  color: var(--color-green);
}

.card-company {
  font-size: 13px;
  color: var(--color-muted);
  margin-top: 3px;
  font-weight: 500;
}

.card-meta {
  text-align: right;
  flex-shrink: 0;
}

.card-date,
.card-location {
  font-size: 12px;
  color: var(--color-subtle);
}

.card-location {
  margin-top: 1px;
}

.card-description {
  font-size: 14px;
  color: var(--color-body);
  margin-top: 10px;
  line-height: 1.6;
  max-width: 520px;
}

.card-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 14px;
}

.card-tags .tag {
  font-size: 11px;
  padding: 2px 8px;
  color: var(--color-muted);
  font-weight: 400;
  transition: color 200ms var(--ease-out-quart), background 200ms var(--ease-out-quart), border-color 200ms var(--ease-out-quart);
}

.card:hover .card-tags .tag {
  background: var(--color-green-light);
  color: var(--color-green);
  border-color: var(--color-green-border);
}

/* ===== Education ===== */
.edu-card {
  display: flex;
  align-items: flex-start;
  gap: 28px;
  padding: 32px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--color-surface) 0%, var(--color-green-light) 100%);
  background-size: 200% 100%;
  background-position: 0% 0%;
  border: 1px solid var(--color-border);
  position: relative;
  overflow: hidden;
  transition: background-position 600ms var(--ease-out-expo), border-color 400ms var(--ease-out-expo);
}

.edu-card + .edu-card {
  margin-top: 12px;
}

.edu-card:hover {
  background-position: 100% 0%;
  border-color: var(--color-green-border);
}

.edu-accent {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  transition: border-color 400ms var(--ease-out-expo), transform 400ms var(--ease-out-expo);
}

.edu-accent img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.edu-card:hover .edu-accent {
  border-color: var(--color-green-border);
  transform: scale(1.06);
}

.edu-content {
  flex: 1;
  min-width: 0;
}

.edu-date {
  font-size: 12px;
  font-weight: 500;
  color: var(--color-green);
  letter-spacing: 0.05em;
}

.edu-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: -0.01em;
  margin-top: 6px;
  line-height: 1.3;
}

.edu-institution {
  font-size: 14px;
  color: var(--color-muted);
  margin-top: 4px;
}

/* ===== Projects ===== */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.project-card {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  background: var(--color-surface);
  cursor: pointer;
}

/* Subtle bottom accent line */
.project-card::before {
  content: "";
  position: absolute;
  bottom: 0;
  left: 24px;
  right: 24px;
  height: 2px;
  background: var(--color-green);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 400ms var(--ease-out-expo);
  z-index: 2;
  pointer-events: none;
}

.project-card:hover::before {
  transform: scaleX(1);
}

.project-image {
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, var(--color-green-light) 0%, var(--color-tag-bg) 50%, var(--color-terra-light) 100%);
  background-size: 200% 200%;
  display: flex;
  align-items: flex-end;
  justify-content: flex-start;
  padding: 16px 20px;
  overflow: hidden;
  position: relative;
  transition: background-position 800ms var(--ease-out-expo);
}

.project-card:hover .project-image {
  background-position: 100% 100%;
}

.project-number {
  font-family: 'DM Serif Display', Georgia, serif;
  font-size: clamp(48px, 5vw, 64px);
  color: var(--color-green);
  opacity: 0.15;
  line-height: 1;
  letter-spacing: -0.03em;
  transition: opacity 400ms var(--ease-out-expo), transform 400ms var(--ease-out-expo);
}

.project-card:hover .project-number {
  opacity: 0.3;
  transform: translateY(-4px);
}

.project-body {
  padding: 20px 24px 24px;
}

.project-body h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: -0.01em;
  transition: color 300ms var(--ease-out-quart);
}

.project-card:hover .project-body h3 {
  color: var(--color-green);
}

.project-body > p {
  font-size: 13px;
  color: var(--color-body);
  margin-top: 8px;
  line-height: 1.6;
}

.project-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 14px;
}

.project-tags .tag {
  font-size: 11px;
  padding: 2px 8px;
  color: var(--color-muted);
  font-weight: 400;
  transition: color 300ms var(--ease-out-quart), background 300ms var(--ease-out-quart), border-color 300ms var(--ease-out-quart);
}

.project-card:hover .project-tags .tag {
  background: var(--color-green-light);
  color: var(--color-green);
  border-color: var(--color-green-border);
}

.project-links {
  display: flex;
  gap: 20px;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--color-border);
}

.project-links a {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-terra);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 4px;
  transition: color 250ms var(--ease-out-quart), gap 250ms var(--ease-out-quart);
}

.project-links a::after {
  content: "→";
  transition: transform 250ms var(--ease-out-quart);
}

.project-links a:hover {
  color: var(--color-terra-hover);
  gap: 8px;
}

.project-links a:hover::after {
  transform: translateX(2px);
}

/* ===== Skills ===== */
.skills-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.skills-category h3 {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 14px;
  letter-spacing: -0.01em;
}

.skills-subcategory {
  margin-top: 18px;
}

.skills-subcategory h4 {
  font-size: 11px;
  font-weight: 500;
  color: var(--color-muted);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.skills-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.skills-list .tag {
  font-size: 13px;
  padding: 6px 14px;
  border-radius: 6px;
  background: var(--color-green-light);
  color: var(--color-green);
  border-color: var(--color-green-border);
}

.skills-list .tag:hover {
  background: var(--color-green);
  color: var(--color-surface);
  border-color: var(--color-green);
  transform: scale(1.06);
}

/* ===== Contact ===== */
.contact h2 {
  font-family: 'DM Serif Display', Georgia, serif;
  font-size: clamp(24px, 3vw + 10px, 36px);
  font-weight: 400;
  color: var(--color-text);
  margin-bottom: 28px;
  letter-spacing: -0.02em;
}

.contact-links {
  display: flex;
  gap: 28px;
}

.contact-links a {
  color: var(--color-terra);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  border-bottom: 1px solid var(--color-terra-border);
  padding-bottom: 2px;
  transition: color 250ms var(--ease-out-quart), border-color 250ms var(--ease-out-quart);
}

.contact-links a:hover {
  color: var(--color-terra-hover);
  border-color: var(--color-terra-hover);
}

/* ===== Footer ===== */
.footer {
  padding: 32px 0;
  border-top: 1px solid var(--color-border);
  text-align: center;
}

.footer p {
  font-size: 12px;
  color: var(--color-subtle);
}

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

  .nav-hamburger {
    display: block;
  }

  .hero {
    padding-top: 60px;
    padding-bottom: 48px;
  }

  .section {
    padding: 56px 0;
  }

  #experience .container {
    padding-left: 40px;
  }

  .card::before {
    left: -16px;
  }

  .card::after {
    left: -20px;
  }

  .card-header {
    flex-direction: column;
  }

  .card-meta {
    text-align: left;
    margin-top: 4px;
  }

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

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

  .contact-links {
    flex-direction: column;
    gap: 16px;
  }

  .section-label::after {
    max-width: 40px;
  }
}

/* ===== Hero Entrance Animation ===== */
@media (prefers-reduced-motion: no-preference) {
  .hero-label,
  .hero h1,
  .hero-tagline {
    opacity: 0;
    transform: translateY(20px);
    animation: heroEntrance 800ms var(--ease-out-expo) forwards;
  }

  .hero-label { animation-delay: 0ms; }
  .hero h1 { animation-delay: 100ms; }
  .hero-tagline { animation-delay: 200ms; }

  @keyframes heroEntrance {
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
}

/* ===== Reveal Animations ===== */
@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 700ms var(--ease-out-expo), transform 700ms var(--ease-out-expo);
  }

  .reveal.visible {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== Reduced Motion ===== */
@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
  }

  .hero-label,
  .hero h1,
  .hero-tagline {
    opacity: 1;
    transform: none;
    animation: none;
  }

  .card,
  .card::before,
  .card::after,
  .card-title,
  .card-tags .tag,
  .tag,
  .nav-links a,
  .nav-links a::after,
  .nav-logo,
  .nav-overlay a,
  .nav-close,
  .contact-links a,
  .project-links a,
  .project-links a::after,
  .project-card,
  .project-card::before,
  .project-image,
  .project-number,
  .project-body h3,
  .project-tags .tag,
  .nav-overlay,
  .skills-list .tag,
  .edu-card,
  .edu-accent {
    transition: none !important;
  }
}