/* ===== FONTS ===== */
@font-face {
  font-family: 'LINESeedSansTH';
  src: url('/assets/fonts/LINESeedSansTH_W_Th.woff2') format('woff2'),
       url('/assets/fonts/LINESeedSansTH_W_Th.woff') format('woff');
  font-weight: 100;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'LINESeedSansTH';
  src: url('/assets/fonts/LINESeedSansTH_W_Rg.woff2') format('woff2'),
       url('/assets/fonts/LINESeedSansTH_W_Rg.woff') format('woff');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'LINESeedSansTH';
  src: url('/assets/fonts/LINESeedSansTH_W_Bd.woff2') format('woff2'),
       url('/assets/fonts/LINESeedSansTH_W_Bd.woff') format('woff');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'LINESeedSansTH';
  src: url('/assets/fonts/LINESeedSansTH_W_XBd.woff2') format('woff2'),
       url('/assets/fonts/LINESeedSansTH_W_XBd.woff') format('woff');
  font-weight: 800;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'LINESeedSansTH';
  src: url('/assets/fonts/LINESeedSansTH_W_He.woff2') format('woff2'),
       url('/assets/fonts/LINESeedSansTH_W_He.woff') format('woff');
  font-weight: 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Marykate';
  src: url('./assets/fonts/marykate-regular.ttf') format('truetype');
  font-display: swap;
}

/* ===== CSS VARIABLES ===== */
:root {
  --color-primary: #F97551;
  --color-secondary: #5A9478;
  --color-accent: #F7BF66;
  --color-bg: #ECE5D3;
  --color-orange: #F58E41;
  --color-text-dark: #1a1a1a;
  --color-white: #ffffff;
  
  --transition-smooth: cubic-bezier(.2, .9, .2, 1);
  --shadow-default: 0 4px 15px rgba(0, 0, 0, 0.1);
  --shadow-large: 0 18px 40px rgba(0, 0, 0, 0.12);
}

/* ===== BASE STYLES ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Marykate', sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  position: relative;
}

h1 {
  color: var(--color-primary);
  font-weight: 400;
}

p {
  color: var(--color-secondary);
  font-size: 1.15em;
  font-family: 'LINESeedSansTH', sans-serif;
}

a {
  cursor: pointer;
}

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

/* ===== SHARED SECTION STYLES ===== */
section {
  height: 100vh;
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: var(--color-bg);
  position: relative;
  overflow: hidden;
  padding: 70px 20px 20px;
}

section:not(#home) {
  flex-direction: column;
}

section:not(#home) .title {
  opacity: 0;
  transform: translateY(-24px) scale(.98);
  transition: transform 700ms var(--transition-smooth), opacity 500ms ease;
  pointer-events: none;
}

.title h1 {
  font-size: clamp(3.5rem, 10vw, 8.5rem);
  color: var(--color-primary);
  font-family: 'Marykate', sans-serif;
  letter-spacing: 6px;
  margin: 0;
  line-height: 0.9;
  pointer-events: auto;
  text-shadow: 0 2px 0 rgba(0, 0, 0, 0.06);
}

/* ===== NAVIGATION ===== */
nav {
  position: fixed;
  top: 0;
  left: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 999;
  height: 60px;
  width: 100vw;
  background-color: var(--color-secondary);
  padding: 0 20px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  transition: background-color 0.3s ease;
}

nav .logo {
  overflow: hidden;
  padding: 0;
  display: flex;
  align-items: center;
}

nav .logo img {
  height: 40px;
  width: auto;
  display: block;
  border-radius: 50%;
}

nav .nav-links {
  list-style: none;
  display: flex;
  gap: 18px;
  align-items: center;
  margin: 0;
  padding: 0;
}

nav .nav-links li a {
  color: var(--color-white);
  text-decoration: none;
  font-family: 'LINESeedSansTH', sans-serif;
  font-weight: 600;
  padding: 10px 15px;
  border-radius: 25px;
  transition: background-color 0.3s ease, color 0.3s ease;
}

nav .nav-links li a:hover {
  background: rgba(255, 255, 255, 0.2);
  color: var(--color-white);
}

nav .nav-links li a.active {
  background: rgba(255, 255, 255, 0.4);
  color: var(--color-primary);
  border-radius: 25px;
}

/* ===== HOME SECTION ===== */
#home .title {
  z-index: 5;
  position: relative;
  gap: 0.4rem;
  max-width: 55%;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

#home .home-title {
  font-size: clamp(4rem, 13vw, 12rem);
  font-weight: 500;
  letter-spacing: 5px;
  line-height: 0.9;
  margin-bottom: 0.2em;
  transform-origin: left center;
  animation: slideIn 800ms var(--transition-smooth) both;
}

#home .home-des {
  font-size: clamp(1.2rem, 2.6vw, 3.5rem);
  font-weight: 600;
  margin-top: 0.2em;
  animation: fadeIn 900ms 150ms both;
}

#home .bg-sun {
  position: absolute;
  top: 0;
  right: 0;
  z-index: 2;
  width: 30%;
  max-width: 320px;
  transform-origin: center;
  animation: float 6s ease-in-out infinite;
}

#home .star {
  position: absolute;
  z-index: -1;
  top: -29%;
  left: -13%;
  max-width: 180px;
  animation: sparkle 2.2s infinite ease-in-out;
}

#home .character {
  z-index: 6;
  position: absolute;
  right: 6%;
  bottom: 20%;
  width: 28%;
  max-width: 420px;
  animation: bob 3s ease-in-out infinite;
}

#home .bg-grass {
  position: absolute;
  bottom: -30%;
  left: 0;
  width: 120%;
  opacity: 0.95;
}

#home .btn {
  width: 6.5%;
  min-width: 48px;
  max-width: 90px;
  position: absolute;
  bottom: 5%;
  left: 50%;
  transform: translateX(-50%);
  animation: bob 0.75s ease-in-out infinite;
  display: inline-block;
}

/* ===== ABSTRACT SECTION ===== */
#abstract .face {
  position: absolute;
  top: 0;
  left: -3%;
  z-index: 3;
  max-width: 420px;
  transform: rotate(-6deg);
}

#abstract .detail {
  z-index: 5;
  background-color: var(--color-accent);
  padding: 36px 64px;
  width: 82%;
  max-width: 1200px;
  margin: 0 auto;
  border-radius: 28px;
  position: relative;
  box-shadow: var(--shadow-large);
  font-family: 'LINESeedSansTH', sans-serif;
  opacity: 0;
  transform: translateY(24px) scale(.99);
  transition: transform 800ms var(--transition-smooth), opacity 500ms ease;
  pointer-events: none;
}

#abstract .face,
#abstract .focus,
#abstract .string,
#abstract .flower,
#abstract .chicken {
  opacity: 0;
  transform: translateY(18px) scale(.98);
  transition: transform 800ms var(--transition-smooth), opacity 500ms ease;
}

#abstract .detail p {
  color: var(--color-text-dark);
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  line-height: 1.75;
  margin-bottom: 0.75em;
  text-align: justify;
}

#abstract .focus {
  position: absolute;
  width: 28%;
  right: -6%;
  top: -18%;
  z-index: 7;
  transform: rotate(-4deg);
}

#abstract .grass {
  position: absolute;
  bottom: -5%;
  left: -3%;
  z-index: 2;
  max-width: 340px;
}

#abstract .flower {
  z-index: 7;
  position: absolute;
  right: 0;
  bottom: -6%;
  max-width: 320px;
  transform: rotate(-6deg);
}

#abstract .string {
  z-index: 7;
  position: absolute;
  right: -3%;
  top: 36%;
  max-width: 110px;
  transform: rotate(6deg);
}

#abstract .chicken {
  z-index: 7;
  position: absolute;
  bottom: 5%;
  left: 4%;
  max-width: 250px;
}

#abstract.in-view .title {
  opacity: 1;
  transform: translateY(0) scale(1);
  transition-delay: 0.05s;
  pointer-events: auto;
}

#abstract.in-view .detail {
  opacity: 1;
  transform: translateY(0) scale(1);
  transition-delay: 0.2s;
  pointer-events: auto;
}

#abstract.in-view .face {
  opacity: 1;
  transform: translateY(0) rotate(-6deg);
  transition-delay: 0.35s;
  animation: float 6s ease-in-out infinite;
}

#abstract.in-view .focus {
  opacity: 1;
  transform: translateY(0) rotate(-4deg);
  transition-delay: 0.45s;
  animation: float 6s ease-in-out infinite;
}

#abstract.in-view .string {
  opacity: 1;
  transform: translateY(0) rotate(6deg);
  transition-delay: 0.5s;
}

#abstract.in-view .flower {
  opacity: 1;
  transform: translateY(0) rotate(-6deg);
  transition-delay: 0.55s;
}

#abstract.in-view .chicken {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 0.6s;
  animation: bob 3s ease-in-out infinite;
}

/* ===== POSTER SECTION ===== */
#poster {
  background-color: var(--color-orange);
}

#poster .title {
  margin-bottom: 2rem;
  opacity: 0;
  transform: translateY(-24px);
  transition: all 0.6s ease-out;
}

#poster .title h1 {
  color: var(--color-bg);
}

#poster.in-view .title {
  opacity: 1;
  transform: translateY(0);
}

.poster-container {
  padding: 2rem;
  max-width: 40%;
}

.poster-image {
  max-width: 55%;
  height: auto;
  cursor: pointer;
  transition: transform 0.3s ease;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
  display: block;
  margin: 0 auto;
  border: 4px solid var(--color-bg);
}

.poster-image:hover {
  transform: scale(1.02);
}

/* ===== SOURCE SECTION ===== */
#source {
  background-color: var(--color-bg);
  position: relative;
  overflow: hidden;
}

#source .title {
  opacity: 0;
  transform: translateY(-24px);
  transition: all 0.6s ease-out;
  z-index: 2;
}

#source .source-buttons {
  display: flex;
  justify-content: center;
  gap: 3rem;
  margin-top: 2rem;
  position: relative;
  z-index: 2;
}

#source .source-btn {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.2rem 3rem;
  background: linear-gradient(90deg, #FFB17A 0%, var(--color-primary) 100%);
  color: var(--color-white);
  text-decoration: none;
  border-radius: 30px;
  font-size: 1.4rem;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(249, 117, 81, 0.2);
}

#source .source-btn img {
  width: 24px;
  height: 24px;
  object-fit: contain;
}

#source .source-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(249, 117, 81, 0.3);
  background: linear-gradient(90deg, #FF9B57 0%, #F85B33 100%);
}

#source .chicken-left {
  position: absolute;
  bottom: 5%;
  left: 10%;
  max-width: 250px;
  opacity: 0;
  transform: translateY(18px);
  transition: all 0.6s ease-out;
  z-index: 1;
  animation: bob 3s ease-in-out infinite;
}

#source .flower-right {
  position: absolute;
  right: 5%;
  bottom: -6%;
  max-width: 320px;
  opacity: 0;
  transform: translateY(18px) rotate(-6deg);
  transition: all 0.6s ease-out;
  z-index: 1;
}

#source.in-view .title {
  opacity: 1;
  transform: translateY(0);
}

#source.in-view .chicken-left {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 0.3s;
}

#source.in-view .flower-right {
  opacity: 1;
  transform: translateY(0) rotate(-6deg);
  transition-delay: 0.4s;
}

/* ===== MEMBER SECTION ===== */
#member {
  background-color: var(--color-orange);
}

#member .title {
  margin-bottom: 2rem;
  opacity: 0;
  transform: translateY(-24px);
  transition: all 0.6s ease-out;
}

#member .title h1 {
  color: var(--color-bg);
}

#member.in-view .title {
  opacity: 1;
  transform: translateY(0);
}

#member .members {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  margin: 0 auto;
}

#member .member-card {
  padding: 2rem;
  text-align: center;
  transition: transform 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

#member .member-card:hover {
  transform: scale(1.05);
}

#member .member-info {
  background: rgba(255, 255, 255, 0.2);
  padding: 1.5rem;
  border-radius: 20px;
  box-shadow: var(--shadow-default);
  border: 2px solid var(--color-secondary);
  width: 100%;
  text-align: start;
  font-family: 'LINESeedSansTH', sans-serif;
}

#member .member-id {
  font-size: 1.2rem;
  font-weight: bold;
  color: #333;
}

#member .member-name {
  font-size: 1rem;
  color: #666;
  margin-top: 0.5rem;
}

#member .member-avatar {
  transition: transform 0.8s ease;
  animation: sparkle 2.2s infinite ease-in-out;
}

#member .star-decoration {
  position: absolute;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

#member .floating-star {
  position: absolute;
  width: 120px;
  height: 120px;
  opacity: 0.8;
  animation: float 3s ease-in-out infinite;
}

#member .star1 { top: 10%; left: 15%; animation-delay: 0s; }
#member .star2 { top: 20%; right: 20%; animation-delay: 0.5s; }
#member .star3 { bottom: 30%; left: 15%; animation-delay: 1s; }
#member .star4 { bottom: 15%; right: 15%; animation-delay: 1.5s; }
#member .star5 { top: 50%; left: 50%; animation-delay: 2s; }

#member .string-left {
  position: absolute;
  left: 30%;
  top: 15%;
  max-width: 110px;
  z-index: 1;
  opacity: 0;
  transition: all 0.6s ease-out;
  rotate: -90deg;
  animation: float 1s ease-in-out infinite;
}

#member .string-right {
  position: absolute;
  right: 30%;
  top: 15%;
  max-width: 110px;
  z-index: 1;
  opacity: 0;
  transition: all 0.6s ease-out;
  animation: float 1s ease-in-out infinite;
}

#member.in-view .string-left,
#member.in-view .string-right {
  opacity: 1;
  transform: translateY(0) rotate(-6deg);
  transition-delay: 0.4s;
}

#member.in-view .string-right {
  transform: translateY(0) rotate(6deg);
}

/* ===== RESPONSIVE STYLES ===== */
@media screen and (max-width: 1024px) {
  #home .title {
    max-width: 70%;
  }

  #abstract .detail {
    width: 90%;
    padding: 32px 40px;
  }

  .poster-image {
    max-width: 70%;
  }

  #member .members {
    gap: 1rem;
    padding: 0 1rem;
  }
}

@media screen and (max-width: 768px) {
  nav {
    padding: 0 15px;
  }

  nav .nav-links {
    gap: 10px;
  }

  nav .nav-links li a {
    padding: 8px 12px;
    font-size: 0.9rem;
  }

  #home .title {
    max-width: 85%;
  }

  #home .character {
    width: 35%;
    right: 2%;
  }

  #abstract .detail {
    padding: 24px 28px;
  }

  #abstract .face,
  #abstract .focus,
  #abstract .flower {
    max-width: 280px;
  }

  .poster-image {
    max-width: 85%;
  }

  #source .source-buttons {
    flex-direction: column;
    gap: 1.5rem;
  }

  #source .source-btn {
    padding: 1rem 2rem;
    font-size: 1.2rem;
  }

  #member .members {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

@media screen and (max-width: 480px) {
  nav .nav-links {
    display: none;
  }

  .title h1 {
    font-size: clamp(2.5rem, 8vw, 3.5rem);
  }

  #home .home-title {
    font-size: clamp(3rem, 10vw, 4rem);
  }

  #home .home-des {
    font-size: clamp(1rem, 2vw, 1.5rem);
  }

  #home .title {
    max-width: 95%;
  }

  #home .character {
    width: 45%;
  }

  #abstract .detail {
    width: 95%;
    padding: 20px;
  }

  #abstract .detail p {
    font-size: 0.95rem;
  }

  .poster-image {
    max-width: 95%;
  }

  #source .source-btn {
    padding: 0.8rem 1.5rem;
    font-size: 1rem;
  }

  #member .member-card {
    padding: 1rem;
  }

  #member .member-info {
    padding: 1rem;
  }

  #member .floating-star {
    width: 80px;
    height: 80px;
  }

  .decorative-elements {
    display: none;
  }
}

/* Optional: Hide decorative elements on very small screens */
@media screen and (max-width: 360px) {
  #home .star,
  #abstract .string,
  #abstract .chicken,
  #source .chicken-left,
  #source .flower-right,
  #member .string-left,
  #member .string-right {
    display: none;
  }
}

/* ===== ANIMATIONS ===== */
@keyframes bob {
  0%, 100% { transform:translateY(0); }
  50% { transform:translateY(-8px); }
}

@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-8px) rotate(-2deg); }
}

@keyframes sparkle {
  0%, 100% { 
    transform: scale(1) rotate(0deg); 
    opacity: 0.9; 
    filter: hue-rotate(0deg); 
  }
  50% { 
    transform: scale(1.12) rotate(6deg); 
    opacity: 1; 
    filter: hue-rotate(10deg); 
  }
}

@keyframes slideIn {
  0% { transform: translateX(-24px) translateY(8px) scale(.98); opacity: 0; }
  100% { transform: translateX(0) translateY(0) scale(1); opacity: 1; }
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}