/* Charan Kotturi — Fun Portfolio */

:root {
  --cream: #FFF8F0;
  --white: #FFFFFF;
  --ink: #1a1a2e;
  --ink-soft: #4a4a6a;
  --yellow: #FFD93D;
  --coral: #FF6B6B;
  --purple: #C77DFF;
  --blue: #4D96FF;
  --green: #6BCB77;
  --pink: #FF8EC7;
  --border: 3px solid var(--ink);
  --shadow: 5px 5px 0 var(--ink);
  --shadow-lg: 8px 8px 0 var(--ink);
  --radius: 20px;
  --font-display: 'Fredoka', system-ui, sans-serif;
  --font-body: 'Nunito', system-ui, sans-serif;
  --header-h: 70px;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 40px);
}

body {
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--cream);
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }

.container {
  width: min(1100px, 92vw);
  margin-inline: auto;
}

/* Floating blobs */
.blob {
  position: fixed;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.45;
  pointer-events: none;
  z-index: 0;
  animation: float 8s ease-in-out infinite;
}

.blob--1 {
  width: 350px; height: 350px;
  background: var(--yellow);
  top: 10%; right: -5%;
  animation-delay: 0s;
}

.blob--2 {
  width: 280px; height: 280px;
  background: var(--purple);
  bottom: 30%; left: -8%;
  animation-delay: -3s;
}

.blob--3 {
  width: 200px; height: 200px;
  background: var(--coral);
  top: 50%; right: 10%;
  animation-delay: -5s;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(20px, -30px) scale(1.05); }
  66% { transform: translate(-15px, 15px) scale(0.95); }
}

/* Marquee */
.marquee {
  position: relative;
  z-index: 2;
  background: var(--ink);
  color: var(--yellow);
  padding: 0.6rem 0;
  overflow: hidden;
  border-bottom: var(--border);
}

.marquee__track {
  display: flex;
  gap: 2rem;
  width: max-content;
  animation: marquee 25s linear infinite;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  white-space: nowrap;
}

@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--cream);
  border-bottom: var(--border);
}

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

.nav__logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--ink);
}

.nav__logo span {
  color: var(--coral);
  display: inline-block;
  animation: wiggle 2s ease-in-out infinite;
}

@keyframes wiggle {
  0%, 100% { transform: rotate(0deg); }
  25% { transform: rotate(12deg); }
  75% { transform: rotate(-8deg); }
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.nav__links a {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  transition: color 0.2s, transform 0.2s;
}

.nav__links a:hover {
  color: var(--coral);
  transform: translateY(-2px);
}

.nav__cta {
  background: var(--yellow);
  padding: 0.45rem 1.1rem !important;
  border: var(--border);
  border-radius: 999px;
  box-shadow: 3px 3px 0 var(--ink);
  transition: transform 0.15s, box-shadow 0.15s !important;
}

.nav__cta:hover {
  transform: translate(2px, 2px) !important;
  box-shadow: 1px 1px 0 var(--ink) !important;
  color: var(--ink) !important;
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: var(--yellow);
  border: var(--border);
  border-radius: 10px;
  padding: 8px;
  cursor: pointer;
  box-shadow: 3px 3px 0 var(--ink);
}

.nav__toggle span {
  display: block;
  width: 22px;
  height: 3px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform 0.25s, opacity 0.25s;
}

.nav__toggle.active span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.nav__toggle.active span:nth-child(2) { opacity: 0; }
.nav__toggle.active span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

main { position: relative; z-index: 1; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.75rem 1.6rem;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  border-radius: 999px;
  border: var(--border);
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
  box-shadow: var(--shadow);
}

.btn:hover {
  transform: translate(3px, 3px);
  box-shadow: 2px 2px 0 var(--ink);
}

.btn--yellow { background: var(--yellow); color: var(--ink); }
.btn--outline { background: var(--white); color: var(--ink); }
.btn--big { padding: 1rem 2rem; font-size: 1.05rem; }

/* Hero */
.hero {
  padding: 4rem 0 5rem;
}

.hero__grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.sticker {
  display: inline-block;
  padding: 0.5rem 1.2rem;
  background: var(--green);
  border: var(--border);
  border-radius: 999px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  box-shadow: var(--shadow);
  margin-bottom: 1.5rem;
}

.sticker--wave {
  animation: wave 3s ease-in-out infinite;
}

@keyframes wave {
  0%, 100% { transform: rotate(-2deg); }
  50% { transform: rotate(2deg); }
}

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4.2rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 1.25rem;
}

.hero__highlight {
  background: var(--yellow);
  padding: 0 0.15em;
  border-radius: 8px;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}

.hero__highlight--alt {
  background: var(--coral);
  color: var(--white);
}

.hero__desc {
  font-size: 1.1rem;
  color: var(--ink-soft);
  max-width: 480px;
  margin-bottom: 2rem;
}

.hero__btns {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.hero__cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.fun-card {
  background: var(--white);
  border: var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow);
  transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.fun-card:hover {
  transform: rotate(0deg) scale(1.05) !important;
  z-index: 2;
}

.fun-card--tilt-left { transform: rotate(-3deg); }
.fun-card--tilt-right { transform: rotate(3deg); }
.fun-card--purple { background: #F3E5FF; }
.fun-card--blue { background: #E3F2FD; }
.fun-card--green { background: #E8F5E9; }

.fun-card__emoji {
  font-size: 2rem;
  display: block;
  margin-bottom: 0.5rem;
}

.fun-card strong {
  font-family: var(--font-display);
  font-size: 1rem;
  display: block;
  margin-bottom: 0.25rem;
}

.fun-card p {
  font-size: 0.85rem;
  color: var(--ink-soft);
}

/* Sections */
.section {
  padding: 5rem 0;
}

.section--skills { background: var(--white); border-block: var(--border); }
.section--projects { background: #F0F7FF; border-bottom: var(--border); }
.section--goals { background: #FFF0F5; border-top: var(--border); }
.section--contact { padding-bottom: 6rem; }

.section-head {
  text-align: center;
  margin-bottom: 3rem;
}

.section-emoji {
  font-size: 2.5rem;
  display: block;
  margin-bottom: 0.5rem;
  animation: bounce 2s ease infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.section-head h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 2.8rem);
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.section-sub {
  color: var(--ink-soft);
  font-size: 1.05rem;
}

/* About */
.about-layout {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 2rem;
  margin-bottom: 2.5rem;
}

.bubble-card {
  background: var(--white);
  border: var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow-lg);
}

.bubble-card__big {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 1rem;
  line-height: 1.5;
}

.bubble-card__big em {
  color: var(--coral);
  font-style: normal;
  background: #FFE0E0;
  padding: 0 0.2em;
  border-radius: 4px;
}

.bubble-card p {
  color: var(--ink-soft);
  margin-bottom: 0.75rem;
}

.principles {
  background: var(--yellow);
  border: var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  box-shadow: var(--shadow-lg);
}

.principles h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  margin-bottom: 1rem;
}

.principles li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.6rem;
}

.principles li span {
  background: var(--white);
  border: 2px solid var(--ink);
  border-radius: 50%;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  flex-shrink: 0;
}

.focus-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

.focus-bubble {
  background: var(--c, var(--yellow));
  border: var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  text-align: center;
  box-shadow: var(--shadow);
  transition: transform 0.2s;
}

.focus-bubble:hover {
  transform: translateY(-6px) rotate(-2deg);
}

.focus-bubble span {
  font-size: 2rem;
  display: block;
  margin-bottom: 0.5rem;
}

.focus-bubble h4 {
  font-family: var(--font-display);
  font-size: 1rem;
  margin-bottom: 0.25rem;
}

.focus-bubble p {
  font-size: 0.85rem;
  color: var(--ink-soft);
}

/* Skills bento */
.skills-bento {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.skill-box {
  background: var(--white);
  border: var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  border-top: 6px solid var(--accent, var(--yellow));
  transition: transform 0.2s;
}

.skill-box:hover {
  transform: rotate(-1deg) scale(1.02);
}

.skill-box--big {
  grid-column: span 2;
}

.skill-box--explore {
  grid-column: span 3;
  background: linear-gradient(135deg, #FFF0F5, #F3E5FF);
}

.skill-box h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  margin-bottom: 1rem;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag {
  padding: 0.35rem 0.85rem;
  font-size: 0.82rem;
  font-weight: 700;
  background: var(--cream);
  border: 2px solid var(--ink);
  border-radius: 999px;
  transition: transform 0.15s, background 0.15s;
}

.tag:hover {
  transform: scale(1.08) rotate(-2deg);
  background: var(--accent, var(--yellow));
}

.tag--glow {
  background: var(--white);
  animation: pulse 2s ease infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(199, 125, 255, 0.4); }
  50% { box-shadow: 0 0 0 6px rgba(199, 125, 255, 0); }
}

/* Projects */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.project-card {
  background: var(--white);
  border: var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.project-card:hover {
  transform: translateY(-6px);
}

.project-card--soon {
  background: var(--ink);
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.project-card--soon:hover {
  transform: translateY(-6px) rotate(-0.5deg);
}

.project-card__badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  padding: 0.35rem 0.85rem;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background: var(--yellow);
  color: var(--ink);
  border: 2px solid var(--ink);
  border-radius: 999px;
  box-shadow: 3px 3px 0 var(--ink);
}

.project-card__top {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.project-card__top--center {
  justify-content: center;
  padding-top: 1.5rem;
}

.project-card__icon {
  width: 72px;
  height: 72px;
  border-radius: 18px;
  border: var(--border);
  box-shadow: 3px 3px 0 var(--ink);
  flex-shrink: 0;
}

.project-card__icon--takeone {
  width: 140px;
  height: 140px;
  border-radius: 28px;
  border: none;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}

.project-card__logo {
  height: 48px;
  width: auto;
}

.project-card__meta h3 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  margin-bottom: 0.25rem;
}

.project-card__tagline {
  font-size: 0.9rem;
  color: var(--ink-soft);
  margin-bottom: 0.75rem;
}

.project-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.project-card__desc {
  font-size: 0.95rem;
  color: var(--ink-soft);
  line-height: 1.6;
}

.project-card__desc--soon {
  color: rgba(255, 255, 255, 0.78);
  text-align: center;
}

.project-card__previews {
  display: flex;
  gap: 0.75rem;
  overflow-x: auto;
  padding-bottom: 0.25rem;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.project-card__previews img {
  height: 220px;
  width: auto;
  border-radius: 14px;
  border: var(--border);
  box-shadow: 3px 3px 0 var(--ink);
  flex-shrink: 0;
  scroll-snap-align: start;
  background: var(--cream);
}

.project-card__store {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  align-self: flex-start;
  margin-top: auto;
  padding: 0.75rem 1.25rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  background: var(--ink);
  color: var(--white);
  border: var(--border);
  border-radius: 999px;
  box-shadow: var(--shadow);
  transition: transform 0.15s, box-shadow 0.15s;
}

.project-card__store:hover {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--ink);
}

.project-card__store-icon {
  width: 1.25rem;
  height: 1.25rem;
}

.project-card__soon-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 140px;
  margin-top: auto;
  padding: 1.5rem;
  border: 2px dashed rgba(255, 255, 255, 0.25);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.05);
}

.project-card__soon-placeholder span {
  font-size: 2rem;
}

.project-card__soon-placeholder p {
  font-family: var(--font-display);
  font-size: 0.95rem;
  color: var(--yellow);
}

/* Interests */
.interest-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}

.interest {
  background: var(--bg, var(--yellow));
  border: var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  box-shadow: var(--shadow);
  transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.interest:hover {
  transform: translateY(-8px) rotate(1deg);
}

.interest__num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.85rem;
  opacity: 0.6;
  display: block;
  margin-bottom: 0.75rem;
}

.interest h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
}

.interest p {
  font-size: 0.9rem;
  color: var(--ink-soft);
  line-height: 1.55;
}

.challenge-cloud {
  background: var(--ink);
  color: var(--white);
  border: var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow-lg);
  text-align: center;
}

.challenge-cloud h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  margin-bottom: 1.25rem;
  color: var(--yellow);
}

.cloud-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.6rem;
}

.cloud-tags span {
  padding: 0.4rem 1rem;
  font-size: 0.85rem;
  font-weight: 700;
  background: rgba(255, 255, 255, 0.1);
  border: 2px solid rgba(255, 255, 255, 0.25);
  border-radius: 999px;
  transition: transform 0.15s, background 0.15s;
  cursor: default;
}

.cloud-tags span:hover {
  transform: scale(1.1) rotate(-3deg);
  background: var(--coral);
  border-color: var(--coral);
}

/* Goals */
.goals-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}

.goal-card {
  background: var(--white);
  border: var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  box-shadow: var(--shadow);
  border-left: 8px solid var(--color, var(--yellow));
  transition: transform 0.2s;
}

.goal-card:hover {
  transform: translateX(4px);
}

.goal-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  margin-bottom: 1rem;
}

.goal-card li {
  position: relative;
  padding-left: 1.5rem;
  font-size: 0.95rem;
  color: var(--ink-soft);
  margin-bottom: 0.6rem;
  font-weight: 600;
}

.goal-card li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--color, var(--coral));
  font-weight: 800;
}

.life-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1rem;
}

.life-item {
  background: var(--white);
  border: var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 0.75rem;
  text-align: center;
  box-shadow: var(--shadow);
  transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.life-item:hover {
  transform: scale(1.08) rotate(-3deg);
}

.life-item span {
  font-size: 2rem;
  display: block;
  margin-bottom: 0.4rem;
}

.life-item p {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--ink-soft);
}

/* Contact */
.contact-box {
  background: var(--yellow);
  border: var(--border);
  border-radius: 24px;
  padding: 3.5rem 2rem;
  text-align: center;
  box-shadow: var(--shadow-lg);
  max-width: 640px;
  margin-inline: auto;
}

.contact__emoji {
  font-size: 3rem;
  display: block;
  margin-bottom: 1rem;
  animation: bounce 2s ease infinite;
}

.contact-box h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  margin-bottom: 0.75rem;
}

.contact-box p {
  color: var(--ink-soft);
  margin-bottom: 2rem;
  font-size: 1.05rem;
}

.contact__btns {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
}

/* Footer */
.footer {
  border-top: var(--border);
  padding: 1.5rem 0;
  background: var(--ink);
  color: var(--white);
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.footer p {
  font-family: var(--font-display);
  font-size: 0.9rem;
}

.footer__fun {
  color: var(--yellow);
}

/* Pop-in animations */
.pop {
  opacity: 0;
  transform: translateY(30px) scale(0.97);
  transition: opacity 0.6s cubic-bezier(0.34, 1.56, 0.64, 1),
              transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

.pop--1 { transition-delay: 0.1s; }
.pop--2 { transition-delay: 0.2s; }
.pop--3 { transition-delay: 0.35s; }
.pop--4 { transition-delay: 0.5s; }

/* Responsive */
@media (max-width: 900px) {
  .hero__grid { grid-template-columns: 1fr; }
  .hero__cards { max-width: 420px; margin-inline: auto; }
  .about-layout { grid-template-columns: 1fr; }
  .focus-row { grid-template-columns: repeat(2, 1fr); }
  .skills-bento { grid-template-columns: 1fr 1fr; }
  .skill-box--big, .skill-box--explore { grid-column: span 2; }
  .projects-grid { grid-template-columns: 1fr; }
  .interest-cards { grid-template-columns: 1fr 1fr; }
  .goals-row { grid-template-columns: 1fr; }
  .life-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 640px) {
  .nav__toggle { display: flex; }

  .nav__links {
    position: fixed;
    top: var(--header-h);
    left: 0; right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--cream);
    border-bottom: var(--border);
    padding: 1rem;
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s, opacity 0.3s;
  }

  .nav__links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav__links li { width: 100%; }

  .nav__links a {
    display: block;
    padding: 0.85rem;
    border-bottom: 2px dashed rgba(26, 26, 46, 0.15);
  }

  .nav__links li:last-child a { border-bottom: none; }

  .hero__cards { grid-template-columns: 1fr; }
  .fun-card { transform: none !important; }
  .focus-row { grid-template-columns: 1fr; }
  .skills-bento { grid-template-columns: 1fr; }
  .skill-box--big, .skill-box--explore { grid-column: span 1; }
  .interest-cards { grid-template-columns: 1fr; }
  .life-grid { grid-template-columns: repeat(2, 1fr); }
  .contact__btns { flex-direction: column; }
  .contact__btns .btn { width: 100%; }
  .footer__inner { flex-direction: column; text-align: center; }
}