/* ==========================================
   収支表NEO LP - Style Sheet
   ========================================== */

/* カラーパレット（CSS Variables）*/
:root {
  --color-main: #E09E87;
  --color-accent: #FFD5C9;
  --color-income: #3F51B5;
  --color-expense: #F6533F;
  --color-text: #4B4B4B;
  --color-text-light: #6B6B6B;
  --color-bg: #EAE9EE;
  --color-white: #FFFFFF;
  --color-black: #1A1A1A;

  /* グラデーション */
  --gradient-main: linear-gradient(135deg, #E09E87 0%, #FFD5C9 100%);
  --gradient-hero: linear-gradient(180deg, #F5F4F8 0%, #EAE9EE 100%);

  /* シャドウ */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
  --shadow-glass: 0 8px 32px rgba(224, 158, 135, 0.15);

  /* グラスモーフィズム */
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(255, 255, 255, 0.5);

  /* フォント */
  --font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;

  /* スペーシング */
  --section-padding: 80px;
  --container-width: 1200px;

  /* アニメーション */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* リセット & ベース */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-family);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

ul {
  list-style: none;
}

/* ==========================================
   Typography
   ========================================== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.4;
  color: var(--color-black);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }

@media (max-width: 768px) {
  h1 { font-size: 1.875rem; }
  h2 { font-size: 1.5rem; }
  h3 { font-size: 1.25rem; }
}

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

.section-title h2 {
  display: inline-block;
  position: relative;
  padding-bottom: 1rem;
}

.section-title h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: var(--gradient-main);
  border-radius: 2px;
}

/* ==========================================
   Layout
   ========================================== */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

section {
  padding: var(--section-padding) 0;
}

/* ==========================================
   Header (Fixed Navigation)
   ========================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  transition: all var(--transition-normal);
}

.header.scrolled {
  box-shadow: var(--shadow-md);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: var(--gradient-main);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  box-shadow: var(--shadow-sm);
}

.logo-icon-img {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  box-shadow: var(--shadow-sm);
  object-fit: cover;
}

.logo-text {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-black);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links a {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-main);
  transition: width var(--transition-normal);
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-cta {
  padding: 0.625rem 1.5rem;
  background: var(--gradient-main);
  color: var(--color-white) !important;
  border-radius: 50px;
  font-weight: 600;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.nav-cta::after {
  display: none !important;
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Mobile Menu */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.mobile-menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .nav-links.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    padding: 1.5rem;
    gap: 1rem;
    border-bottom: 1px solid var(--glass-border);
  }
}

/* ==========================================
   Hero Section
   ========================================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--gradient-hero);
  padding-top: 90px;
  overflow: hidden;
  position: relative;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 80%;
  height: 150%;
  background: radial-gradient(circle, rgba(224, 158, 135, 0.1) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 50px;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 1.5rem;
  backdrop-filter: blur(10px);
}

.hero-badge-icon {
  font-size: 1rem;
}

.hero h1 {
  font-size: 2.75rem;
  margin-bottom: 1.25rem;
  line-height: 1.3;
}

.hero h1 span {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: 1.125rem;
  color: var(--color-text-light);
  margin-bottom: 2rem;
  max-width: 480px;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
}

.app-store-badge {
  height: 54px;
  transition: transform var(--transition-fast);
}

.app-store-badge:hover {
  transform: scale(1.05);
}

.hero-stats {
  display: flex;
  gap: 2rem;
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(0, 0, 0, 0.08);
}

.hero-stat {
  text-align: left;
}

.hero-stat-value {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-main);
}

.hero-stat-label {
  font-size: 0.875rem;
  color: var(--color-text-light);
}

/* Phone Mockup */
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
}

.phone-mockup {
  position: relative;
  width: 280px;
  height: 580px;
  background: linear-gradient(145deg, #2a2a2a 0%, #1a1a1a 100%);
  border-radius: 40px;
  padding: 12px;
  box-shadow:
    0 50px 100px rgba(0, 0, 0, 0.2),
    0 20px 40px rgba(0, 0, 0, 0.15),
    inset 0 0 0 1px rgba(255, 255, 255, 0.1);
}

.phone-screen {
  width: 100%;
  height: 100%;
  background: var(--color-bg);
  border-radius: 28px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.phone-screen img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.phone-notch {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 120px;
  height: 30px;
  background: #1a1a1a;
  border-radius: 0 0 20px 20px;
}

.screenshot-placeholder {
  text-align: center;
  color: var(--color-text-light);
  padding: 2rem;
}

.screenshot-placeholder-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  opacity: 0.5;
}

@media (max-width: 1024px) {
  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 3rem;
  }

  .hero-content {
    order: 1;
  }

  .hero-visual {
    order: 2;
  }

  .hero-description {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-cta {
    justify-content: center;
  }

  .hero-stats {
    justify-content: center;
  }

  .phone-mockup {
    width: 240px;
    height: 500px;
  }
}

@media (max-width: 768px) {
  .hero h1 {
    font-size: 2rem;
  }

  .hero-description {
    font-size: 1rem;
  }

  .hero-stats {
    flex-direction: column;
    gap: 1rem;
  }

  .hero-stat {
    text-align: center;
  }
}

/* ==========================================
   Problem Section
   ========================================== */
.problem {
  background: var(--color-white);
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.problem-card {
  background: var(--color-bg);
  border-radius: 20px;
  padding: 2rem;
  text-align: center;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.problem-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.problem-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 1.25rem;
  background: var(--glass-bg);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
}

.problem-card h3 {
  margin-bottom: 0.75rem;
  font-size: 1.125rem;
}

.problem-card p {
  color: var(--color-text-light);
  font-size: 0.9375rem;
}

@media (max-width: 768px) {
  .problem-grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================
   Features Section
   ========================================== */
.features {
  background: var(--color-bg);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.feature-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  padding: 2rem;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-main);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-glass);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon {
  width: 56px;
  height: 56px;
  background: var(--gradient-main);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow-sm);
}

.feature-card h3 {
  margin-bottom: 0.75rem;
  font-size: 1.125rem;
}

.feature-card p {
  color: var(--color-text-light);
  font-size: 0.9375rem;
  line-height: 1.6;
}

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

@media (max-width: 768px) {
  .features-grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================
   Screenshots Section
   ========================================== */
.screenshots {
  background: var(--color-white);
  overflow: hidden;
}

.screenshots-wrapper {
  display: flex;
  gap: 1.5rem;
  padding: 1rem 0;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.screenshots-wrapper::-webkit-scrollbar {
  display: none;
}

.screenshot-item {
  flex-shrink: 0;
  width: 200px;
  scroll-snap-align: center;
}

.screenshot-frame {
  background: linear-gradient(145deg, #2a2a2a 0%, #1a1a1a 100%);
  border-radius: 24px;
  padding: 8px;
  box-shadow: var(--shadow-lg);
}

.screenshot-inner {
  background: var(--color-bg);
  border-radius: 18px;
  overflow: hidden;
  aspect-ratio: 9 / 19.5;
  display: flex;
  align-items: center;
  justify-content: center;
}

.screenshot-inner img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.screenshot-placeholder-small {
  text-align: center;
  color: var(--color-text-light);
  font-size: 0.75rem;
  padding: 1rem;
}

.screenshot-placeholder-small span {
  display: block;
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
  opacity: 0.5;
}

.screenshot-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.screenshot-label {
  text-align: center;
  margin-top: 0.75rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text);
}

.hero-screenshot {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 28px;
}

@media (max-width: 768px) {
  .screenshot-item {
    width: 160px;
  }
}

/* ==========================================
   FAQ Section
   ========================================== */
.faq {
  background: var(--color-bg);
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  overflow: hidden;
  transition: box-shadow var(--transition-normal);
}

.faq-item:hover {
  box-shadow: var(--shadow-md);
}

.faq-item[open] {
  box-shadow: var(--shadow-glass);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  cursor: pointer;
  font-weight: 600;
  font-size: 1rem;
  color: var(--color-black);
  list-style: none;
  transition: background var(--transition-fast);
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-question:hover {
  background: rgba(224, 158, 135, 0.05);
}

.faq-icon {
  position: relative;
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  margin-left: 1rem;
}

.faq-icon::before,
.faq-icon::after {
  content: '';
  position: absolute;
  background: var(--color-main);
  border-radius: 2px;
  transition: transform var(--transition-normal);
}

.faq-icon::before {
  width: 100%;
  height: 2px;
  top: 50%;
  left: 0;
  transform: translateY(-50%);
}

.faq-icon::after {
  width: 2px;
  height: 100%;
  left: 50%;
  top: 0;
  transform: translateX(-50%);
}

.faq-item[open] .faq-icon::after {
  transform: translateX(-50%) rotate(90deg);
  opacity: 0;
}

.faq-answer {
  padding: 0 1.5rem 1.5rem;
  color: var(--color-text-light);
  line-height: 1.8;
}

.faq-answer p {
  margin: 0;
}

.faq-answer strong {
  color: var(--color-main);
  font-weight: 600;
}

@media (max-width: 768px) {
  .faq-question {
    font-size: 0.9375rem;
    padding: 1rem 1.25rem;
  }

  .faq-answer {
    padding: 0 1.25rem 1.25rem;
    font-size: 0.9375rem;
  }
}

/* ==========================================
   CTA Section
   ========================================== */
.cta {
  background: var(--gradient-main);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
}

.cta-content {
  position: relative;
  z-index: 1;
}

.cta h2 {
  color: var(--color-white);
  margin-bottom: 1rem;
  font-size: 2rem;
}

.cta p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.125rem;
  margin-bottom: 2rem;
}

.cta-button {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 2.5rem;
  background: var(--color-white);
  color: var(--color-main);
  border-radius: 50px;
  font-size: 1.125rem;
  font-weight: 600;
  box-shadow: var(--shadow-lg);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.cta-button:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.2);
}

.cta-button img {
  height: 28px;
}

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

.cta-button-android {
  background: var(--color-black);
  color: var(--color-white) !important;
}

.cta-button-android:hover {
  background: #333;
}

@media (max-width: 768px) {
  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }
}

/* ==========================================
   Footer
   ========================================== */
.footer {
  background: var(--color-black);
  color: rgba(255, 255, 255, 0.7);
  padding: 3rem 0;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.footer-links {
  display: flex;
  gap: 2rem;
}

.footer-links a {
  font-size: 0.875rem;
  transition: color var(--transition-fast);
}

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

.footer-copyright {
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.5);
}

/* ==========================================
   Legal Pages (Privacy & Terms)
   ========================================== */
.legal-page {
  padding-top: 120px;
  padding-bottom: 80px;
  min-height: 100vh;
  background: var(--color-white);
}

.legal-content {
  max-width: 800px;
  margin: 0 auto;
}

.legal-content h1 {
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 3px solid var(--color-main);
}

.legal-content h2 {
  font-size: 1.25rem;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  color: var(--color-text);
}

.legal-content p {
  margin-bottom: 1rem;
  line-height: 1.8;
}

.legal-content ul {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
}

.legal-content li {
  margin-bottom: 0.5rem;
  list-style-type: disc;
}

.legal-date {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(0, 0, 0, 0.1);
  text-align: right;
  color: var(--color-text-light);
}

/* ==========================================
   Animations
   ========================================== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

.animate-delay-1 { transition-delay: 0.1s; }
.animate-delay-2 { transition-delay: 0.2s; }
.animate-delay-3 { transition-delay: 0.3s; }
.animate-delay-4 { transition-delay: 0.4s; }
.animate-delay-5 { transition-delay: 0.5s; }
.animate-delay-6 { transition-delay: 0.6s; }

/* Floating animation for phone mockup */
.hero-visual .phone-mockup {
  animation: float 6s ease-in-out infinite;
}

/* ==========================================
   Utility Classes
   ========================================== */
.text-center { text-align: center; }
.text-gradient {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}