/* =========================================
   HiKid Landing Page Styles
   Animal Island inspired — pastel, playful, rounded
   ========================================= */

/* CSS Variables — Macaron Palette */
:root {
  --pink: #ffb7c5;
  --pink-soft: #ffd1dc;
  --mint: #a8e6cf;
  --mint-soft: #d4f5e9;
  --yellow: #ffeaa7;
  --yellow-soft: #fff5d6;
  --blue: #a2d2ff;
  --blue-soft: #d0e8ff;
  --peach: #ffdab9;
  --cream: #fff5e6;
  --white: #ffffff;
  --brown: #6b4c3b;
  --brown-soft: #9f8a7a;
  --brown-mute: #c4b5a8;
  --green: #7dc395;

  --bg: var(--cream);
  --text: var(--brown);
  --text-soft: var(--brown-soft);
  --text-mute: var(--brown-mute);

  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 28px;
  --radius-xl: 40px;
  --shadow-sm: 0 2px 8px rgba(107, 76, 59, 0.08);
  --shadow-md: 0 6px 24px rgba(107, 76, 59, 0.1);
  --shadow-lg: 0 12px 40px rgba(107, 76, 59, 0.12);

  --container-max: 1100px;
  --gap: 24px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'M PLUS Rounded 1c', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  font-weight: 500;
}

a {
  color: inherit;
  text-decoration: none;
}

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

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--gap);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-lg);
  font-family: inherit;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.25s ease;
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--mint) 0%, var(--green) 100%);
  color: var(--white);
  box-shadow: 0 4px 16px rgba(125, 195, 149, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(125, 195, 149, 0.45);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background: var(--white);
  color: var(--text);
  border: 2px solid var(--mint-soft);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background: var(--mint-soft);
  transform: translateY(-1px);
}

.btn-download {
  background: linear-gradient(135deg, var(--pink) 0%, #ff9eb0 100%);
  color: var(--white);
  font-size: 1.15rem;
  padding: 18px 40px;
  border-radius: var(--radius-xl);
  box-shadow: 0 6px 24px rgba(255, 183, 197, 0.4);
}

.btn-download:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 10px 32px rgba(255, 183, 197, 0.5);
}

.btn-download:active {
  transform: translateY(0) scale(0.98);
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 245, 230, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(196, 181, 168, 0.2);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.4rem;
  color: var(--text);
  flex-shrink: 0;
}

.logo img {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
}

.nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav a {
  padding: 8px 16px;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-soft);
  transition: all 0.2s ease;
}

.nav a:hover {
  background: var(--white);
  color: var(--text);
  box-shadow: var(--shadow-sm);
}

.lang-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--radius-md);
  background: var(--white);
  border: 2px solid var(--mint-soft);
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text);
  cursor: pointer;
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.lang-toggle:hover {
  background: var(--mint-soft);
  transform: translateY(-1px);
}

.lang-arrow {
  color: var(--brown-mute);
  font-size: 0.75rem;
}

/* Hero */
.hero {
  padding: 60px 0 80px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 180px;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--pink-soft) 0%, transparent 65%);
  opacity: 0.35;
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  text-align: center;
}

.hero-badge {
  display: inline-block;
  padding: 8px 20px;
  border-radius: var(--radius-xl);
  background: var(--white);
  border: 2px solid var(--yellow);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--brown-soft);
  margin-bottom: 28px;
  box-shadow: var(--shadow-sm);
}

.hero-title {
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 800;
  line-height: 1.1;
  color: var(--text);
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.hero-tagline {
  font-size: clamp(1.3rem, 3vw, 1.8rem);
  font-weight: 700;
  color: var(--green);
  margin-bottom: 16px;
}

.hero-subtitle {
  font-size: 1.05rem;
  color: var(--text-soft);
  max-width: 540px;
  margin: 0 auto 36px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 56px;
  flex-wrap: wrap;
}

.hero-preview {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  position: relative;
}

.preview-img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  transition: transform 0.3s ease;
}

.preview-main {
  width: 100%;
  max-width: 520px;
}

.preview-secondary {
  width: 100%;
  max-width: 360px;
  position: absolute;
  right: -40px;
  bottom: -30px;
  opacity: 0.9;
}

.preview-img:hover {
  transform: translateY(-4px);
}

/* Section Titles */
.section-title {
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  font-weight: 800;
  text-align: center;
  margin-bottom: 48px;
  color: var(--text);
}

/* Features */
.features {
  padding: 80px 0;
  position: relative;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  padding: 36px 28px;
  border-radius: var(--radius-lg);
  text-align: center;
  transition: all 0.3s ease;
  border: 2px solid transparent;
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

.card-pink {
  background: linear-gradient(135deg, var(--pink-soft) 0%, #fff0f3 100%);
  border-color: rgba(255, 183, 197, 0.3);
}

.card-mint {
  background: linear-gradient(135deg, var(--mint-soft) 0%, #f0fdf6 100%);
  border-color: rgba(168, 230, 207, 0.3);
}

.card-yellow {
  background: linear-gradient(135deg, var(--yellow-soft) 0%, #fffbf0 100%);
  border-color: rgba(255, 234, 167, 0.3);
}

.card-blue {
  background: linear-gradient(135deg, var(--blue-soft) 0%, #f0f8ff 100%);
  border-color: rgba(162, 210, 255, 0.3);
}

.card-peach {
  background: linear-gradient(135deg, #fff0e0 0%, #fff8f0 100%);
  border-color: rgba(255, 218, 185, 0.3);
}

.card-pinksoft {
  background: linear-gradient(135deg, #ffe8f0 0%, #fff5f8 100%);
  border-color: rgba(255, 209, 220, 0.3);
}

.feature-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--white);
  box-shadow: var(--shadow-sm);
  color: var(--text);
}

.feature-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text);
}

.feature-card p {
  font-size: 0.95rem;
  color: var(--text-soft);
  line-height: 1.7;
}

/* Installation */
.install {
  padding: 80px 0;
  background: linear-gradient(180deg, var(--white) 0%, var(--cream) 100%);
}

.steps {
  display: flex;
  gap: 32px;
  justify-content: center;
  margin-bottom: 40px;
}

.step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  max-width: 280px;
  flex: 1;
}

.step-number {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--yellow) 0%, var(--peach) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
}

.step-content h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.step-content p {
  font-size: 0.95rem;
  color: var(--text-soft);
  line-height: 1.7;
}

.install-note {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  max-width: 640px;
  margin: 0 auto;
  padding: 20px 24px;
  border-radius: var(--radius-md);
  background: var(--white);
  border: 2px solid var(--yellow-soft);
  color: var(--text-soft);
  font-size: 0.9rem;
  line-height: 1.7;
}

.install-note svg {
  flex-shrink: 0;
  color: var(--yellow);
  margin-top: 2px;
}

.install-note code {
  background: var(--cream);
  padding: 2px 8px;
  border-radius: 6px;
  font-family: 'SF Mono', Monaco, monospace;
  font-size: 0.85rem;
  color: var(--text);
}

/* LLM Config */
.llm-config {
  padding: 80px 0;
  background: linear-gradient(180deg, var(--cream) 0%, var(--white) 100%);
}

.config-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 860px;
  margin: 0 auto;
}

.config-card {
  padding: 36px 28px;
  border-radius: var(--radius-lg);
  border: 2px solid transparent;
  transition: all 0.3s ease;
}

.config-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.config-icon {
  width: 56px;
  height: 56px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--white);
  box-shadow: var(--shadow-sm);
  color: var(--text);
}

.config-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text);
}

.config-card p {
  font-size: 0.95rem;
  color: var(--text-soft);
  line-height: 1.7;
  margin-bottom: 16px;
}

.config-code {
  background: rgba(255, 255, 255, 0.7);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  border: 1px solid rgba(168, 230, 207, 0.4);
}

.config-code code {
  font-family: 'SF Mono', Monaco, 'Cascadia Code', monospace;
  font-size: 0.9rem;
  color: var(--text);
  background: none;
  padding: 0;
}

.config-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.config-list li {
  font-size: 0.95rem;
  color: var(--text-soft);
  padding-left: 20px;
  position: relative;
}

.config-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--blue);
}

/* Download */
.download {
  padding: 100px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.download::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 800px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--mint-soft) 0%, transparent 65%);
  opacity: 0.5;
  pointer-events: none;
}

.download-inner {
  position: relative;
  z-index: 1;
}

.download-icon {
  width: 100px;
  height: 100px;
  margin: 0 auto 24px;
  border-radius: var(--radius-lg);
  background: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
}

.download-icon img {
  width: 70px;
  height: 70px;
}

.download-subtitle {
  font-size: 1.1rem;
  color: var(--text-soft);
  margin-bottom: 24px;
}

.download-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.meta-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: var(--radius-md);
  background: var(--white);
  border: 2px solid var(--blue-soft);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text);
}

.meta-text {
  font-size: 0.9rem;
  color: var(--text-mute);
}

.download-version {
  margin-top: 16px;
  font-size: 0.85rem;
  color: var(--text-mute);
}

/* Footer */
.site-footer {
  padding: 40px 0;
  border-top: 1px solid rgba(196, 181, 168, 0.2);
}

.footer-inner {
  text-align: center;
}

.footer-copy {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
}

.footer-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 12px;
}

.footer-links a {
  font-size: 0.9rem;
  color: var(--text-soft);
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: var(--text);
}

.footer-divider {
  color: var(--brown-mute);
}

.footer-made {
  font-size: 0.85rem;
  color: var(--text-mute);
}

/* =========================================
   Responsive
   ========================================= */

@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .preview-secondary {
    position: static;
    opacity: 1;
    max-width: 280px;
  }

  .hero-preview {
    flex-direction: column;
  }
}

@media (max-width: 768px) {
  .header-inner {
    height: 60px;
  }

  .logo-text {
    display: none;
  }

  .nav {
    gap: 4px;
  }

  .nav a {
    padding: 6px 10px;
    font-size: 0.85rem;
  }

  .hero {
    padding: 40px 0 60px;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
    max-width: 320px;
    margin: 0 auto 40px;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .features {
    padding: 60px 0;
  }

  .features-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .feature-card {
    padding: 28px 24px;
  }

  .steps {
    flex-direction: column;
    align-items: center;
    gap: 32px;
  }

  .step {
    max-width: 100%;
  }

  .install {
    padding: 60px 0;
  }

  .install-note {
    flex-direction: column;
    text-align: center;
  }

  .install-note svg {
    margin: 0 auto;
  }

  .download {
    padding: 60px 0;
  }

  .download-meta {
    flex-direction: column;
    gap: 8px;
  }

  .config-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .config-card {
    padding: 28px 24px;
  }
}

@media (max-width: 480px) {
  :root {
    --gap: 16px;
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .section-title {
    margin-bottom: 32px;
  }

  .btn-download {
    padding: 16px 28px;
    font-size: 1rem;
  }
}