/* ══════════════════════════════════════════════════════════════════════════
   Nuwan Dewasurendra - Portfolio Website
   styles.css
   ══════════════════════════════════════════════════════════════════════════ */

/* ─────────────────────────────────────────────────────────────────────────
   1. RESET & BASE
   ───────────────────────────────────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

ul, ol { list-style: none; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; font: inherit; }


/* ─────────────────────────────────────────────────────────────────────────
   2. DESIGN TOKENS
   ───────────────────────────────────────────────────────────────────────── */
:root {
  /* Colors */
  --color-bg:           #0F1117;
  --color-surface:      #1A1F2E;
  --color-surface-2:    #242938;
  --color-accent:       #4ECDC4;
  --color-accent-dim:   rgba(78, 205, 196, 0.15);
  --color-accent-glow:  rgba(78, 205, 196, 0.30);
  --color-text:         #F5F5F5;
  --color-text-muted:   #8A8F9E;
  --color-border:       rgba(255, 255, 255, 0.08);

  /* Typography */
  --font-heading: 'Space Grotesk', sans-serif;
  --font-body:    'Inter', sans-serif;

  --fs-xs:    0.75rem;
  --fs-sm:    0.875rem;
  --fs-base:  1rem;
  --fs-md:    1.125rem;
  --fs-lg:    1.5rem;
  --fs-xl:    2rem;
  --fs-2xl:   2.5rem;
  --fs-3xl:   3.5rem;
  --fs-hero:  clamp(2.4rem, 6vw, 4.8rem);

  /* Spacing */
  --sp-xs:  0.25rem;
  --sp-sm:  0.5rem;
  --sp-md:  1rem;
  --sp-lg:  1.5rem;
  --sp-xl:  2rem;
  --sp-2xl: 3rem;
  --sp-3xl: 5rem;
  --section-padding: clamp(4rem, 8vw, 7rem);

  /* Layout */
  --max-width:   1200px;
  --nav-height:  70px;
  --radius-sm:   6px;
  --radius-md:   12px;
  --radius-lg:   20px;
  --radius-pill: 999px;

  /* Animation */
  --transition-fast:  150ms ease;
  --transition-base:  300ms ease;
  --transition-slow:  600ms ease;
  --ease-spring:      cubic-bezier(0.34, 1.56, 0.64, 1);
}


/* ─────────────────────────────────────────────────────────────────────────
   3. TYPOGRAPHY
   ───────────────────────────────────────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: 1.15;
  font-weight: 700;
  color: var(--color-text);
}

.section-heading {
  font-size: var(--fs-2xl);
  font-family: var(--font-heading);
  font-weight: 700;
  margin-bottom: var(--sp-sm);
  position: relative;
  display: inline-block;
}

.section-heading::after {
  content: '';
  display: block;
  width: 48px;
  height: 3px;
  background: var(--color-accent);
  margin-top: var(--sp-sm);
  border-radius: var(--radius-pill);
}

.section-subheading {
  font-size: var(--fs-md);
  color: var(--color-text-muted);
  margin-bottom: var(--sp-2xl);
  margin-top: var(--sp-md);
  max-width: 560px;
}


/* ─────────────────────────────────────────────────────────────────────────
   4. UTILITIES
   ───────────────────────────────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--sp-xl);
}

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* Scroll animation base state */
.fade-up {
  opacity: 0;
  transform: translateY(32px);
  transition:
    opacity var(--transition-slow),
    transform var(--transition-slow);
  transition-delay: var(--delay, 0ms);
}
.fade-up.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Scroll margin for fixed nav offset */
section {
  scroll-margin-top: var(--nav-height);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-sm);
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
  font-size: var(--fs-base);
  font-weight: 500;
  transition: all var(--transition-base);
  white-space: nowrap;
}

.btn--primary {
  background: var(--color-accent);
  color: var(--color-bg);
}
.btn--primary:hover {
  background: #5eddd4;
  transform: translateY(-2px);
  box-shadow: 0 8px 25px var(--color-accent-glow);
}

.btn--outline {
  background: transparent;
  color: var(--color-accent);
  border: 1.5px solid var(--color-accent);
}
.btn--outline:hover {
  background: var(--color-accent-dim);
  transform: translateY(-2px);
}

/* Tags */
.tag {
  display: inline-block;
  padding: 0.2rem 0.75rem;
  background: var(--color-accent-dim);
  color: var(--color-accent);
  border-radius: var(--radius-pill);
  font-size: var(--fs-xs);
  font-weight: 500;
  letter-spacing: 0.03em;
  border: 1px solid rgba(78, 205, 196, 0.25);
}


/* ─────────────────────────────────────────────────────────────────────────
   5. NAVIGATION
   ───────────────────────────────────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-height);
  z-index: 1000;
  background: transparent;
  transition:
    background var(--transition-base),
    backdrop-filter var(--transition-base),
    border-bottom var(--transition-base);
}

.nav--scrolled {
  background: rgba(15, 17, 23, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-border);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
}

.nav__logo {
  font-family: var(--font-heading);
  font-size: var(--fs-xl);
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: -0.03em;
  transition: opacity var(--transition-fast);
}
.nav__logo:hover { opacity: 0.8; }

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

.nav__link {
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
  position: relative;
  padding-bottom: 2px;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  border-radius: var(--radius-pill);
  transition: width var(--transition-base);
}

.nav__link:hover,
.nav__link--active {
  color: var(--color-text);
}
.nav__link:hover::after,
.nav__link--active::after {
  width: 100%;
}

.nav__link--cta {
  color: var(--color-accent);
  border: 1px solid rgba(78, 205, 196, 0.4);
  padding: 0.35rem 1rem;
  border-radius: var(--radius-pill);
  font-size: var(--fs-sm);
}
.nav__link--cta::after { display: none; }
.nav__link--cta:hover {
  background: var(--color-accent-dim);
  color: var(--color-accent);
}

/* Hamburger */
.nav__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: 4px;
}

.nav__hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text);
  border-radius: var(--radius-pill);
  transition: transform var(--transition-base), opacity var(--transition-base);
  transform-origin: center;
}

.nav__hamburger.is-open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav__hamburger.is-open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.nav__hamburger.is-open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile dropdown menu */
.nav__mobile {
  display: none;
  position: absolute;
  top: var(--nav-height);
  left: 0; right: 0;
  background: rgba(15, 17, 23, 0.96);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-border);
  padding: var(--sp-lg) 0;
  transform: translateY(-10px);
  opacity: 0;
  pointer-events: none;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.nav__mobile.is-open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: all;
}

.nav__mobile ul { padding: 0 var(--sp-xl); }

.nav__mobile-link {
  display: block;
  padding: var(--sp-md) 0;
  font-size: var(--fs-md);
  font-weight: 500;
  color: var(--color-text-muted);
  border-bottom: 1px solid var(--color-border);
  transition: color var(--transition-fast);
}
.nav__mobile-link:hover { color: var(--color-accent); }
.nav__mobile ul li:last-child .nav__mobile-link { border-bottom: none; }


/* ─────────────────────────────────────────────────────────────────────────
   6. HERO
   ───────────────────────────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: var(--nav-height);
}

/* Subtle dot grid background */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(78, 205, 196, 0.1) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
  z-index: 0;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, black, transparent);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, black, transparent);
}

/* Animated background glow blobs */
.hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.hero__geo {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.18;
}
.hero__geo--1 {
  width: 500px; height: 500px;
  background: var(--color-accent);
  top: -100px; left: -100px;
  animation: geoFloat1 14s ease-in-out infinite alternate;
}
.hero__geo--2 {
  width: 350px; height: 350px;
  background: #3A7BD5;
  bottom: 0; right: -80px;
  animation: geoFloat2 18s ease-in-out infinite alternate;
}
.hero__geo--3 {
  width: 250px; height: 250px;
  background: var(--color-accent);
  bottom: 20%; left: 40%;
  animation: geoFloat1 22s ease-in-out infinite alternate-reverse;
  opacity: 0.08;
}

.hero__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-3xl);
  align-items: center;
  padding-block: var(--sp-3xl);
  position: relative;
  z-index: 1;
}

/* Text content */
.hero__eyebrow {
  font-size: var(--fs-md);
  color: var(--color-accent);
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: var(--sp-md);
  animation: heroFadeUp 0.6s ease 0.1s both;
}

.hero__heading {
  font-size: var(--fs-hero);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: var(--sp-lg);
  animation: heroFadeUp 0.6s ease 0.25s both;
}

.hero__tagline {
  font-size: var(--fs-lg);
  font-family: var(--font-heading);
  font-weight: 300;
  color: var(--color-text-muted);
  margin-bottom: var(--sp-lg);
  min-height: 2rem;
  animation: heroFadeUp 0.6s ease 0.5s both;
}

.cursor {
  display: inline-block;
  color: var(--color-accent);
  animation: blink 1s step-end infinite;
  font-weight: 300;
}

.hero__bio {
  font-size: var(--fs-md);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--sp-lg);
  max-width: 480px;
  animation: heroFadeUp 0.6s ease 0.65s both;
}

/* ─── SKILL CHIPS ─────────────────────────────────────────────────────── */
.hero__chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-sm);
  margin-bottom: var(--sp-xl);
  animation: heroFadeUp 0.6s ease 0.78s both;
}

.hero__chip {
  display: inline-flex;
  align-items: center;
  padding: 0.28rem 0.8rem;
  background: rgba(78, 205, 196, 0.07);
  color: var(--color-accent);
  border: 1px solid rgba(78, 205, 196, 0.2);
  border-radius: var(--radius-pill);
  font-size: var(--fs-sm);
  font-weight: 500;
  letter-spacing: 0.01em;
  white-space: nowrap;
}

/* ─── STATS ROW ───────────────────────────────────────────────────────── */
.hero__stats {
  display: flex;
  align-items: center;
  gap: var(--sp-xl);
  margin-bottom: var(--sp-xl);
  animation: heroFadeUp 0.6s ease 0.92s both;
}

.hero__stat {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.hero__stat-num {
  font-family: var(--font-heading);
  font-size: var(--fs-xl);
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  letter-spacing: -0.02em;
}

.hero__stat-label {
  font-size: 0.68rem;
  color: var(--color-text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.hero__stat-divider {
  width: 1px;
  height: 32px;
  background: var(--color-border);
  flex-shrink: 0;
}

.hero__cta {
  display: flex;
  gap: var(--sp-md);
  flex-wrap: wrap;
  animation: heroFadeUp 0.6s ease 1.05s both;
}

/* ─── AVATAR VISUAL (right column) ───────────────────────────────────── */
.hero__visual {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-xl);
  animation: heroFadeUp 0.8s ease 0.35s both;
}

.hero__avatar-ring {
  position: relative;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  padding: 4px;
  background: conic-gradient(
    var(--color-accent) 0%,
    transparent 40%,
    transparent 60%,
    var(--color-accent) 100%
  );
  animation: spin 12s linear infinite;
  will-change: transform;
  filter: drop-shadow(0 0 28px rgba(78, 205, 196, 0.2));
}

.hero__avatar-placeholder {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: var(--color-surface);
  border: 4px solid var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  animation: spin 12s linear infinite reverse;
  will-change: transform;
}

.hero__avatar-placeholder span {
  font-family: var(--font-heading);
  font-size: var(--fs-3xl);
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: -0.05em;
}

/* Replaced when real photo is added */
.hero__avatar-img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--color-bg);
  animation: spin 12s linear infinite reverse;
}

/* ─── SOCIAL ICONS (below avatar) ────────────────────────────────────── */
.hero__social {
  display: flex;
  gap: var(--sp-md);
  align-items: center;
}

.hero__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  transition: all var(--transition-base);
}

.hero__social-link svg {
  width: 17px;
  height: 17px;
  flex-shrink: 0;
}

.hero__social-link:hover {
  background: var(--color-accent-dim);
  border-color: rgba(78, 205, 196, 0.45);
  color: var(--color-accent);
  transform: translateY(-2px);
}

/* Scroll hint */
.hero__scroll-hint {
  position: absolute;
  bottom: var(--sp-xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-sm);
  opacity: 0.5;
  transition: opacity var(--transition-base);
  z-index: 1;
}
.hero__scroll-hint:hover { opacity: 1; }

.hero__scroll-arrow {
  width: 20px;
  height: 20px;
  border-right: 2px solid var(--color-accent);
  border-bottom: 2px solid var(--color-accent);
  transform: rotate(45deg);
  animation: bounce 1.6s ease-in-out infinite;
}


/* ─────────────────────────────────────────────────────────────────────────
   7. ABOUT
   ───────────────────────────────────────────────────────────────────────── */
.about {
  padding-block: var(--section-padding);
  background: var(--color-surface);
}

.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-3xl);
  align-items: start;
  margin-top: var(--sp-xl);
}

.about__story p {
  color: var(--color-text-muted);
  font-size: var(--fs-md);
  line-height: 1.8;
  margin-bottom: var(--sp-lg);
}
.about__story p:last-child { margin-bottom: 0; }

/* Skill cards grid */
.about__skills {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-lg);
}

.skill-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--sp-xl);
  text-align: center;
  transition:
    transform var(--transition-base),
    border-color var(--transition-base),
    box-shadow var(--transition-base);
}

.skill-card:hover {
  transform: translateY(-5px);
  border-color: var(--color-accent);
  box-shadow: 0 12px 40px var(--color-accent-dim);
}

.skill-card__icon {
  font-size: 2.25rem;
  display: block;
  margin-bottom: var(--sp-md);
}

.skill-card__label {
  font-size: var(--fs-base);
  font-family: var(--font-heading);
  font-weight: 700;
  margin-bottom: var(--sp-sm);
  color: var(--color-text);
}

.skill-card__desc {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}


/* ─────────────────────────────────────────────────────────────────────────
   8. RESUME
   ───────────────────────────────────────────────────────────────────────── */
.resume {
  padding-block: var(--section-padding);
}

.resume__web {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--sp-2xl);
  margin-top: var(--sp-xl);
}

.resume__block {
  margin-bottom: var(--sp-xl);
  padding-bottom: var(--sp-xl);
  border-bottom: 1px solid var(--color-border);
}
.resume__block:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.resume__category {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: var(--fs-xs);
  margin-bottom: var(--sp-lg);
}

.resume__entry {
  margin-bottom: var(--sp-lg);
}
.resume__entry:last-child { margin-bottom: 0; }

.resume__entry-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--sp-md);
  flex-wrap: wrap;
  margin-bottom: var(--sp-xs);
}

.resume__entry-header strong {
  font-size: var(--fs-base);
  font-weight: 600;
  color: var(--color-text);
}

.resume__date {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  white-space: nowrap;
}

.resume__entry-detail {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

.resume__skills-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-sm);
}

/* ─── ACHIEVEMENTS ────────────────────────────────────────────────────── */
.resume__achievements {
  display: flex;
  flex-direction: column;
  gap: var(--sp-md);
}

.resume__achievement-item {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-lg);
  padding: var(--sp-lg);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-base);
}

.resume__achievement-item:hover {
  border-color: rgba(78, 205, 196, 0.3);
}

.resume__achievement-icon {
  font-size: 1.75rem;
  flex-shrink: 0;
  line-height: 1;
  margin-top: 2px;
}

.resume__achievement-item > div strong {
  display: block;
  font-size: var(--fs-base);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--sp-xs);
}

.resume__achievement-item > div p {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  line-height: 1.5;
}

.resume__actions {
  display: flex;
  gap: var(--sp-md);
  margin-top: var(--sp-xl);
  flex-wrap: wrap;
}

/* PDF iframe wrapper */
.resume__pdf-wrapper {
  margin-top: var(--sp-xl);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
}
.resume__pdf-wrapper[hidden] { display: none; }

.resume__pdf-iframe {
  width: 100%;
  height: 680px;
  border: none;
  background: var(--color-surface);
}


/* ─────────────────────────────────────────────────────────────────────────
   9. PROJECTS
   ───────────────────────────────────────────────────────────────────────── */
.projects {
  padding-block: var(--section-padding);
  background: var(--color-surface);
}

.projects__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-xl);
  margin-top: var(--sp-xl);
}

/* Project card */
.project-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  cursor: pointer;
  transition:
    transform var(--transition-base),
    border-color var(--transition-base),
    box-shadow var(--transition-base);
  outline: none;
}

.project-card:hover,
.project-card:focus-visible {
  transform: translateY(-6px);
  border-color: var(--color-accent);
  box-shadow: 0 20px 50px rgba(0,0,0,0.45), 0 0 0 1px var(--color-accent-dim);
}

.project-card:focus-visible {
  box-shadow: 0 0 0 3px var(--color-accent);
}

/* Card image area */
.project-card__image {
  position: relative;
  height: 220px;
  overflow: hidden;
  background: var(--color-surface-2);
}

.project-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.project-card:hover .project-card__image img {
  transform: scale(1.05);
}

/* Placeholder for cards without images */
.project-card__image-inner {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface-2);
}

.project-card__placeholder-icon {
  font-size: 4rem;
  opacity: 0.6;
}

/* Color-coded card backgrounds */
.project-card__image--homebot .project-card__image-inner {
  background: linear-gradient(135deg, #0F1117 0%, #1a2744 100%);
}
.project-card__image--lego .project-card__image-inner {
  background: linear-gradient(135deg, #0F1117 0%, #2d1a05 100%);
}
.project-card__image--eagle .project-card__image-inner {
  background: linear-gradient(135deg, #0F1117 0%, #1f2a0a 100%);
}

/* Card overlay on hover */
.project-card__overlay {
  position: absolute;
  inset: 0;
  background: rgba(78, 205, 196, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-base);
  backdrop-filter: blur(2px);
}

.project-card__overlay span {
  color: var(--color-accent);
  font-weight: 600;
  font-size: var(--fs-md);
  font-family: var(--font-heading);
  letter-spacing: 0.02em;
}

.project-card:hover .project-card__overlay {
  opacity: 1;
}

/* Project number badge */
.project-card__num {
  position: absolute;
  top: var(--sp-md);
  left: var(--sp-md);
  font-family: var(--font-heading);
  font-size: 0.68rem;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.35);
  letter-spacing: 0.1em;
  z-index: 2;
  line-height: 1;
}

/* Card body */
.project-card__body {
  padding: var(--sp-lg);
  flex: 1;
}

.project-card__tags {
  display: flex;
  gap: var(--sp-xs);
  flex-wrap: wrap;
  margin-bottom: var(--sp-md);
}

.project-card__title {
  font-size: var(--fs-lg);
  font-family: var(--font-heading);
  font-weight: 700;
  margin-bottom: var(--sp-sm);
  color: var(--color-text);
}

.project-card__excerpt {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
}

/* Card footer */
.project-card__footer {
  padding: var(--sp-md) var(--sp-lg);
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

.project-card__cta {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--color-accent);
  font-family: var(--font-heading);
}


/* ─────────────────────────────────────────────────────────────────────────
   10. MODALS
   ───────────────────────────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.82);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--sp-xl);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  animation: overlayIn 0.2s ease;
}

.modal-content {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 900px;
  max-height: 90svh;
  overflow-y: auto;
  position: relative;
  animation: modalIn 0.3s var(--ease-spring);
  scrollbar-width: thin;
  scrollbar-color: var(--color-border) transparent;
}

/* Horizontal scrollable image strip */
.modal-image-strip {
  display: flex;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  gap: 3px;
  background: #0a0d14;
  /* top corners match modal border-radius */
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}
.modal-image-strip::-webkit-scrollbar { display: none; }

.modal-image-strip img {
  flex-shrink: 0;
  height: 360px;
  width: auto;
  max-width: 92%;
  display: block;
  object-fit: cover;
  scroll-snap-align: start;
}

/* Decorative banner for no-image projects */
.modal-banner {
  height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  flex-shrink: 0;
  position: relative;
  overflow: hidden;
}

.modal-banner::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, transparent 20%, rgba(10, 13, 20, 0.6) 100%);
  pointer-events: none;
}

.modal-banner__icon {
  font-family: var(--font-heading);
  font-size: 4.5rem;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.12);
  letter-spacing: -0.04em;
  position: relative;
  z-index: 1;
  user-select: none;
}

.modal-close {
  position: absolute;
  top: var(--sp-md);
  right: var(--sp-md);
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: rgba(26, 31, 46, 0.85);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
  z-index: 10;
  backdrop-filter: blur(8px);
}
.modal-close:hover {
  background: var(--color-accent-dim);
  border-color: rgba(78, 205, 196, 0.4);
  color: var(--color-accent);
}

.modal-header {
  padding: var(--sp-xl) var(--sp-2xl) var(--sp-lg);
  padding-right: 4.5rem; /* room for close button */
}

.modal-header h2 {
  font-size: var(--fs-xl);
  margin-bottom: var(--sp-md);
}

.modal-tags {
  display: flex;
  gap: var(--sp-sm);
  flex-wrap: wrap;
}

.modal-body {
  padding: 0 var(--sp-2xl) var(--sp-2xl);
}

.modal-body p {
  color: var(--color-text-muted);
  font-size: var(--fs-base);
  line-height: 1.75;
  margin-bottom: var(--sp-lg);
}

.modal-highlights {
  list-style: none;
  margin-bottom: var(--sp-xl);
}

.modal-highlights li {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  padding: var(--sp-sm) 0;
  padding-left: var(--sp-lg);
  border-bottom: 1px solid var(--color-border);
  position: relative;
}
.modal-highlights li:last-child { border-bottom: none; }

.modal-highlights li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: 600;
}

.modal-actions {
  display: flex;
  gap: var(--sp-md);
  flex-wrap: wrap;
}


/* ─────────────────────────────────────────────────────────────────────────
   11. HOBBIES
   ───────────────────────────────────────────────────────────────────────── */
.hobbies {
  padding-block: var(--section-padding);
}

.hobbies__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-lg);
  margin-top: var(--sp-xl);
}

.hobby-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--sp-xl) var(--sp-lg);
  text-align: center;
  transition:
    transform var(--transition-base),
    border-color var(--transition-base),
    box-shadow var(--transition-base);
}

.hobby-card:hover {
  transform: translateY(-4px);
  border-color: rgba(78, 205, 196, 0.4);
  box-shadow: 0 8px 30px rgba(0,0,0,0.25);
}

.hobby-card__icon {
  font-size: 2.5rem;
  display: block;
  margin-bottom: var(--sp-md);
}

.hobby-card__title {
  font-size: var(--fs-base);
  font-family: var(--font-heading);
  font-weight: 700;
  margin-bottom: var(--sp-sm);
  color: var(--color-text);
}

.hobby-card__desc {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}


/* ─────────────────────────────────────────────────────────────────────────
   12. CONTACT
   ───────────────────────────────────────────────────────────────────────── */
.contact {
  padding-block: var(--section-padding);
  background: var(--color-surface);
}

.contact__cta-label {
  font-family: var(--font-heading);
  font-size: var(--fs-3xl);
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: var(--sp-2xl);
  letter-spacing: -0.03em;
  opacity: 0.9;
}

.contact__links {
  display: flex;
  gap: var(--sp-xl);
  flex-wrap: wrap;
  margin-bottom: var(--sp-3xl);
}

.contact__link {
  display: flex;
  align-items: center;
  gap: var(--sp-md);
  padding: var(--sp-lg) var(--sp-xl);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--fs-base);
  font-weight: 500;
  color: var(--color-text-muted);
  transition: all var(--transition-base);
  min-width: 160px;
}

.contact__link:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: translateY(-3px);
  box-shadow: 0 8px 25px var(--color-accent-dim);
}

.contact__icon {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
}

/* Contact form */
.contact__form {
  max-width: 600px;
  display: flex;
  flex-direction: column;
  gap: var(--sp-lg);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--sp-sm);
}

.form-group label {
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-group input,
.form-group textarea {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--sp-md) var(--sp-lg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--fs-base);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
  resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-text-muted);
  opacity: 0.6;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-dim);
}

.contact__form .btn { align-self: flex-start; }

.contact__form-note {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  opacity: 0.7;
}


/* ─────────────────────────────────────────────────────────────────────────
   13. FOOTER
   ───────────────────────────────────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--color-border);
  padding-block: var(--sp-xl);
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-lg);
  flex-wrap: wrap;
}

.footer__logo {
  font-family: var(--font-heading);
  font-size: var(--fs-xl);
  font-weight: 700;
  color: var(--color-accent);
}

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

.footer__back-top {
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}
.footer__back-top:hover { color: var(--color-accent); }


/* ─────────────────────────────────────────────────────────────────────────
   14. KEYFRAMES
   ───────────────────────────────────────────────────────────────────────── */
@keyframes heroFadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

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

@keyframes spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

@keyframes geoFloat1 {
  from { transform: translate(0, 0) scale(1); }
  to   { transform: translate(40px, 30px) scale(1.08); }
}

@keyframes geoFloat2 {
  from { transform: translate(0, 0) scale(1); }
  to   { transform: translate(-30px, -20px) scale(1.05); }
}

@keyframes bounce {
  0%, 100% { transform: rotate(45deg) translate(0, 0); }
  50%       { transform: rotate(45deg) translate(4px, 4px); }
}

@keyframes overlayIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes modalIn {
  from { opacity: 0; transform: scale(0.94) translateY(16px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}


/* ─────────────────────────────────────────────────────────────────────────
   15. RESPONSIVE - TABLET (≤ 1024px)
   ───────────────────────────────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .hero__inner {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--sp-2xl);
    padding-block: var(--sp-2xl);
  }

  .hero__bio { max-width: none; margin-inline: auto; }
  .hero__chips { justify-content: center; }
  .hero__stats { justify-content: center; }
  .hero__cta { justify-content: center; }
  .hero__visual { order: -1; }

  .hero__avatar-ring {
    width: 240px;
    height: 240px;
  }

  .about__grid {
    grid-template-columns: 1fr;
    gap: var(--sp-2xl);
  }

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

  .hobbies__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .modal-content {
    max-width: 700px;
  }

  .modal-image-strip img {
    height: 300px;
  }
}


/* ─────────────────────────────────────────────────────────────────────────
   16. RESPONSIVE - MOBILE (≤ 768px)
   ───────────────────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .nav__links { display: none; }
  .nav__hamburger { display: flex; }
  .nav__mobile { display: block; }

  .container { padding-inline: var(--sp-lg); }

  .hero__avatar-ring {
    width: 200px;
    height: 200px;
  }

  .hero__stat-num { font-size: var(--fs-lg); }

  .hero__stats { gap: var(--sp-lg); }

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

  .hobbies__grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .contact__links {
    flex-direction: column;
    gap: var(--sp-md);
  }

  .contact__link {
    min-width: auto;
  }

  .resume__entry-header {
    flex-direction: column;
    gap: var(--sp-xs);
  }

  .resume__pdf-iframe {
    height: 480px;
  }

  .modal-content {
    max-width: 100%;
    max-height: 88svh;
    border-radius: var(--radius-md);
  }

  .modal-image-strip {
    border-radius: var(--radius-md) var(--radius-md) 0 0;
  }

  .modal-image-strip img {
    height: 240px;
    max-width: 100%;
  }

  .modal-banner {
    height: 130px;
    border-radius: var(--radius-md) var(--radius-md) 0 0;
  }

  .modal-header { padding: var(--sp-lg) var(--sp-lg) var(--sp-md); padding-right: 3.5rem; }
  .modal-body { padding: 0 var(--sp-lg) var(--sp-lg); }

  .modal-overlay { padding: var(--sp-sm); }

  .footer__inner {
    flex-direction: column;
    text-align: center;
    gap: var(--sp-sm);
  }
}

@media (max-width: 480px) {
  .about__skills {
    grid-template-columns: 1fr;
  }

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

  .contact__cta-label {
    font-size: var(--fs-2xl);
  }

  .hero__tagline {
    font-size: var(--fs-md);
  }

  .hero__stats {
    gap: var(--sp-md);
    flex-wrap: wrap;
    justify-content: center;
  }

  .hero__stat-num { font-size: var(--fs-lg); }
}