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

:root {
  --color-bg: #FAF8F2;
  --color-surface: rgba(255, 255, 255, 0.8);
  --color-border: rgba(20, 20, 21, 0.06);
  --color-text: #141415;
  --color-text-60: rgba(20, 20, 21, 0.6);
  --color-text-50: rgba(20, 20, 21, 0.5);
  --color-text-40: rgba(20, 20, 21, 0.4);
  --color-text-30: rgba(20, 20, 21, 0.3);
  --color-primary: #2AA6A0;
  --color-primary-hover: #3DBDB7;
  --color-primary-5: rgba(42, 166, 160, 0.05);
  --color-primary-8: rgba(42, 166, 160, 0.08);
  --color-primary-10: rgba(42, 166, 160, 0.1);
  --color-primary-15: rgba(42, 166, 160, 0.15);
  --color-primary-30: rgba(42, 166, 160, 0.3);
  --color-primary-glow: rgba(42, 166, 160, 0.2);
  --radius-xl: 28px;
  --radius-pill: 50px;
  --font: 'SF Pro Rounded', 'Quicksand', 'Nunito', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.03);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.06);
  --shadow-glow: 0 8px 30px var(--color-primary-glow);
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

@media (min-width: 1024px) {
  .container { padding: 0 48px; }
}

/* === Navigation === */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(250, 248, 242, 0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
}

.nav-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.logo {
  text-decoration: none;
  display: flex;
  align-items: center;
  transition: opacity 0.2s;
}

.logo:hover { opacity: 0.8; }
.logo-img { height: 36px; width: auto; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 40px;
}

.nav-links a {
  color: var(--color-text-60);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: color 0.2s;
}

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

/* === Buttons === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font);
  font-weight: 600;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all 0.3s;
  letter-spacing: 0.02em;
}

.btn-primary {
  padding: 18px 40px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 20px;
  font-size: 15px;
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 12px 40px var(--color-primary-glow);
}

/* === Hero === */
.hero {
  position: relative;
  padding: 128px 24px 128px;
  overflow: hidden;
}

.hero-gradient {
  position: absolute; inset: 0;
  background: linear-gradient(to bottom, rgba(42, 166, 160, 0.02), transparent);
  pointer-events: none;
}

.hero-inner { position: relative; }

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.hero-logo {
  width: 144px; height: 144px;
  margin-bottom: 48px;
  animation: fadeIn 0.8s ease;
}

@media (min-width: 1024px) {
  .hero-logo { width: 176px; height: 176px; }
}

.hero h1 {
  font-size: clamp(2.8rem, 6vw, 4.5rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
  animation: fadeInUp 0.8s ease 0.1s both;
}

.hero-subtitle {
  font-size: clamp(1.15rem, 2.5vw, 1.5rem);
  color: var(--color-text-50);
  font-weight: 300;
  max-width: 640px;
  line-height: 1.6;
  margin-bottom: 40px;
  animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-primary-15);
  margin-bottom: 40px;
  box-shadow: 0 2px 20px rgba(42, 166, 160, 0.08);
  animation: fadeInUp 0.8s ease 0.3s both;
}

.badge-heart { flex-shrink: 0; }

.hero-badge span {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 0.02em;
}

/* Hero Stats (Brand Facts) */
.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  margin-bottom: 56px;
  animation: fadeInUp 0.8s ease 0.35s both;
}

.stat { text-align: center; }

.stat-number {
  font-size: clamp(1.5rem, 3vw, 1.875rem);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 4px;
}

.stat-label {
  font-size: 12px;
  color: var(--color-text-40);
  font-weight: 300;
}

.stat-divider {
  width: 1px; height: 40px;
  background: rgba(20, 20, 21, 0.1);
}

.hero .btn-primary {
  animation: fadeInUp 0.8s ease 0.4s both;
}

/* === Section Common === */
.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-primary-10);
  box-shadow: 0 2px 12px rgba(42, 166, 160, 0.06);
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 0.04em;
  margin-bottom: 24px;
}

.section-label svg { flex-shrink: 0; }

.section-title {
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 20px;
}

.section-title-lg {
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 28px;
}

.section-subtitle {
  color: var(--color-text-50);
  max-width: 640px;
  margin: 0 auto;
  font-size: clamp(1rem, 2vw, 1.375rem);
  font-weight: 300;
  line-height: 1.6;
}

.section-subtitle-lg { max-width: 760px; }

/* === Apps Section === */
.apps-section {
  padding: 112px 0;
  position: relative;
}

.apps-gradient {
  position: absolute; inset: 0;
  background: linear-gradient(to bottom, transparent, rgba(42, 166, 160, 0.01), transparent);
  pointer-events: none;
}

/* Category Filter */
.filter-bar {
  display: flex;
  justify-content: center;
  margin-bottom: 56px;
}

.filter-pills {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: var(--radius-pill);
  padding: 8px;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
}

.filter-pill {
  padding: 10px 24px;
  border-radius: var(--radius-pill);
  font-family: var(--font);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
  border: none;
  cursor: pointer;
  transition: all 0.3s;
  background: transparent;
  color: var(--color-text-50);
}

.filter-pill:hover {
  color: var(--color-primary);
  background: var(--color-primary-5);
}

.filter-pill.active {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 4px 12px var(--color-primary-30);
}

/* Apps Grid */
.apps-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 640px) {
  .apps-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
}

@media (min-width: 1024px) {
  .apps-grid { grid-template-columns: 1fr 1fr 1fr; }
}

.app-card { transition: all 0.3s ease; }
.app-card.hidden { display: none; }

.app-card-inner {
  position: relative;
  background: var(--color-surface);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 32px 36px;
  transition: all 0.5s;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.app-card-inner:hover {
  border-color: var(--color-primary-30);
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
}

.app-status {
  position: absolute;
  top: 24px; right: 24px;
  padding: 6px 12px;
  background: var(--color-primary-10);
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 0.03em;
}

.app-status.status-coming {
  background: rgba(255, 149, 0, 0.1);
  color: #CC7700;
}

.btn-coming-soon {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  background: var(--color-text-30);
  color: #fff;
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.app-icon-wrap { margin-bottom: 24px; }

.app-icon-img {
  width: 72px; height: 72px;
  border-radius: 20px;
  box-shadow: 0 4px 20px rgba(42, 166, 160, 0.08);
  transition: transform 0.3s;
}

.app-card-inner:hover .app-icon-img {
  transform: scale(1.05);
}

.app-name {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 16px;
  overflow-wrap: break-word;
  word-break: break-word;
}

/* === Notebook Games Card === */
.notebook-card {
  background: #FFFEF9 !important;
  border: 1.5px dashed rgba(91, 140, 90, 0.25) !important;
  position: relative;
  overflow: hidden;
}

.notebook-lines {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    to bottom,
    transparent,
    transparent 31px,
    rgba(100, 149, 237, 0.06) 31px,
    rgba(100, 149, 237, 0.06) 32px
  );
  background-position: 0 20px;
}

.notebook-doodles {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 1;
}

.doodle {
  position: absolute;
  opacity: 0.35;
}

.doodle-star {
  top: 18px;
  left: 18px;
  transform: rotate(-12deg);
}

.doodle-spiral {
  bottom: 60px;
  right: 16px;
  transform: rotate(8deg);
}

.doodle-arrow {
  bottom: 20px;
  left: 20px;
  transform: rotate(-5deg);
}

.notebook-card:hover .doodle {
  opacity: 0.55;
  transition: opacity 0.4s;
}

.notebook-tag {
  background: rgba(91, 140, 90, 0.08) !important;
  color: #5B8C5A !important;
  border: 1px dashed rgba(91, 140, 90, 0.2);
}

.app-tagline {
  color: var(--color-text-50);
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 6px;
  letter-spacing: 0.01em;
}

.app-description {
  color: var(--color-text-60);
  font-size: 15px;
  line-height: 1.6;
  margin-bottom: 20px;
  flex: 1;
}

/* Feature Tags */
.app-features {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.feature-tag {
  padding: 6px 12px;
  background: var(--color-primary-5);
  color: var(--color-primary);
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 500;
}

/* App Card Footer */
.app-footer {
  display: flex;
  justify-content: flex-end;
  padding-top: 16px;
  border-top: 1px solid rgba(20, 20, 21, 0.04);
  margin-top: auto;
}

.btn-download {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  background: var(--color-text);
  color: #fff;
  border-radius: var(--radius-pill);
  text-decoration: none;
  font-size: 13px;
  font-weight: 600;
  transition: all 0.3s;
  box-shadow: var(--shadow-sm);
}

.btn-download:hover {
  background: var(--color-primary);
  box-shadow: var(--shadow-md);
}

/* === Feedback CTA === */
.feedback-cta {
  margin-top: 96px;
  background: linear-gradient(135deg, rgba(255,255,255,0.8), rgba(255,255,255,0.4));
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--color-border);
  border-radius: 32px;
  padding: 48px;
  text-align: center;
}

@media (min-width: 1024px) {
  .feedback-cta { padding: 64px; }
}

.feedback-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px; height: 64px;
  border-radius: 20px;
  background: linear-gradient(135deg, var(--color-primary-10), rgba(61, 189, 183, 0.1));
  margin-bottom: 24px;
}

.feedback-cta h3 {
  font-size: clamp(1.75rem, 3.5vw, 2.625rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.feedback-cta p {
  font-size: 18px;
  color: var(--color-text-50);
  font-weight: 300;
  line-height: 1.6;
  max-width: 640px;
  margin: 0 auto 32px;
}

/* === Philosophy Section === */
.philosophy-section {
  padding: 112px 0;
  background: rgba(255, 255, 255, 0.5);
  position: relative;
}

.philosophy-dots {
  position: absolute; inset: 0;
  opacity: 0.015;
  background-image: radial-gradient(circle, #2AA6A0 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
}

.values-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-bottom: 96px;
}

@media (min-width: 768px) {
  .values-grid { grid-template-columns: repeat(3, 1fr); gap: 28px; }
}

.value-card {
  background: var(--color-surface);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 36px 40px;
  text-align: center;
  transition: all 0.5s;
}

.value-card:hover {
  border-color: var(--color-primary-30);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.value-icon-wrap {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px; height: 64px;
  border-radius: 20px;
  background: linear-gradient(135deg, var(--color-primary-10), rgba(61, 189, 183, 0.1));
  margin-bottom: 24px;
}

.value-card h3 {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.value-desc {
  font-size: 15px;
  color: var(--color-text-60);
  line-height: 1.6;
}

/* About Box */
.about-box {
  max-width: 760px;
  margin: 0 auto;
  background: linear-gradient(135deg, var(--color-primary-5), rgba(61, 189, 183, 0.05));
  border: 1px solid var(--color-primary-10);
  border-radius: var(--radius-xl);
  padding: 40px 48px;
  text-align: center;
}

.about-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-primary-15);
  box-shadow: 0 2px 12px rgba(42, 166, 160, 0.06);
  margin-bottom: 24px;
}

.about-badge span {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 0.02em;
}

.about-box h3 {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.about-box > p {
  font-size: 16px;
  color: var(--color-text-60);
  line-height: 1.7;
  margin-bottom: 24px;
}

.about-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--color-primary-10);
  color: var(--color-text-40);
  font-size: 14px;
  font-weight: 300;
}

.meta-dot {
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--color-primary-30);
}

/* === Footer === */
.footer {
  padding: 64px 0;
  border-top: 1px solid var(--color-border);
  background: rgba(255, 255, 255, 0.3);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

@media (min-width: 768px) {
  .footer-grid { grid-template-columns: 2fr 1fr 1fr; }
}

.footer-col h4 {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.footer-brand-desc {
  color: var(--color-text-50);
  font-weight: 300;
  font-size: 15px;
  line-height: 1.6;
  margin-bottom: 20px;
}

.footer-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-primary-10);
  box-shadow: 0 2px 8px rgba(42, 166, 160, 0.04);
}

.footer-badge span {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 0.02em;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  color: var(--color-text-50);
  text-decoration: none;
  font-size: 15px;
  font-weight: 300;
  transition: color 0.2s;
}

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

.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid rgba(20, 20, 21, 0.04);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

@media (min-width: 768px) {
  .footer-bottom { flex-direction: row; justify-content: space-between; }
}

.footer-bottom span:first-child {
  color: var(--color-text-40);
  font-size: 14px;
  font-weight: 300;
}

.footer-made {
  color: var(--color-text-30);
  font-size: 13px;
  font-weight: 300;
  letter-spacing: 0.02em;
}

/* === Legal Pages === */
.legal-section { padding: 140px 0 80px; }
.legal-content { max-width: 680px; margin: 0 auto; }
.legal-content h1 { font-size: 2rem; font-weight: 700; margin-bottom: 8px; }
.legal-date { color: var(--color-text-40); font-size: 0.85rem; margin-bottom: 40px; }
.legal-content h2 { font-size: 1.15rem; font-weight: 600; margin-top: 32px; margin-bottom: 12px; }
.legal-content p { color: var(--color-text-50); font-size: 0.9rem; line-height: 1.7; margin-bottom: 12px; }
.legal-content ul { list-style: none; margin-bottom: 16px; }
.legal-content li { color: var(--color-text-50); font-size: 0.9rem; padding: 4px 0 4px 20px; position: relative; line-height: 1.6; }
.legal-content li::before { content: '\2022'; position: absolute; left: 4px; color: var(--color-primary); }
.legal-content a { color: var(--color-primary); text-decoration: none; }
.legal-content a:hover { text-decoration: underline; }

/* === Scroll Reveal === */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* === Animations === */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* === Responsive === */
@media (max-width: 640px) {
  .hero { padding: 120px 20px 80px; }
  .hero-logo { width: 120px; height: 120px; margin-bottom: 32px; }
  .hero-badge { padding: 10px 20px; gap: 8px; margin-bottom: 32px; }
  .hero-badge span { font-size: 13px; }
  .hero-stats { gap: 16px; margin-bottom: 40px; flex-wrap: wrap; }
  .stat-number { font-size: 1.25rem; }
  .btn-primary { padding: 14px 32px; font-size: 14px; }
  .nav-links { gap: 20px; }
  .nav-links a { font-size: 14px; }
  .filter-pills {
    flex-direction: column;
    border-radius: 20px;
    width: 100%;
  }
  .filter-pill { width: 100%; text-align: center; }
  .apps-section, .philosophy-section { padding: 80px 0; }
  .section-title { font-size: clamp(1.6rem, 5vw, 2.5rem); }
  .section-title-lg { font-size: clamp(1.5rem, 5vw, 2.25rem); }
  .feedback-cta { padding: 32px 24px; border-radius: 24px; }
  .feedback-cta h3 { font-size: 1.5rem; }
  .value-card { padding: 28px 24px; }
  .about-box { padding: 28px 24px; }
  .about-box h3 { font-size: 22px; }
  .app-card-inner { padding: 24px 20px; }
  .app-name { font-size: 22px; }
  .app-description { font-size: 14px; }
  .footer-bottom { text-align: center; }
}