/* Base Reset & Variables */
:root {
  --color-primary: #0F172A;
  /* Deep Navy */
  --color-accent: #2563EB;
  /* Bright Blue */
  --color-accent-hover: #1D4ED8;
  --color-bg: #FFFFFF;
  --color-surface: #F8FAFC;
  --color-text: #334155;
  --color-text-light: #64748B;
  --color-border: #E2E8F0;

  --font-base: 'Noto Sans JP', sans-serif;
  --font-heading: 'Plus Jakarta Sans', 'Noto Sans JP', sans-serif;

  --header-height: 100px;
  --container-width: 1200px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

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

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

ul,
ol {
  list-style: none;
}

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

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  color: var(--color-primary);
  line-height: 1.3;
  font-weight: 700;
}

.section-title {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 3rem;
  letter-spacing: 0.05em;
  position: relative;
}

.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 4px;
  background-color: var(--color-accent);
  margin: 1rem auto 0;
  border-radius: 2px;
}

/* Containers */
.container {
  width: 90%;
  max-width: var(--container-width);
  margin: 0 auto;
}

.section {
  padding: 6rem 0;
}

.section-bg {
  background-color: var(--color-surface);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 2.5rem;
  font-weight: 600;
  border-radius: 50px;
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
  font-size: 1rem;
}

.btn-primary {
  background-color: var(--color-accent);
  color: #FFF;
}

.btn-primary:hover {
  background-color: var(--color-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(37, 99, 235, 0.2);
}

.btn-outline {
  background-color: transparent;
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-outline:hover {
  background-color: var(--color-primary);
  color: #FFF;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background-color: #FFF;
  z-index: 1000;
  border-bottom: 1px solid var(--color-border);
  transition: var(--transition);
  display: flex;
}

.header.scrolled {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
  height: 80px;
}

.header-inner {
  flex: 1;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 2rem;
  max-width: var(--container-width);
  margin: 0 auto;
}

.header-left {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.company-tagline {
  font-size: 0.75rem;
  color: var(--color-text-light);
  margin-bottom: 0.2rem;
  letter-spacing: 0.05em;
  font-weight: 500;
}

.header.scrolled .company-tagline {
  display: none;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-primary);
  font-family: var(--font-heading);
  letter-spacing: -0.5px;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  line-height: 1;
}

.logo span {
  color: var(--color-accent);
}

.header-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  justify-content: center;
  gap: 0.5rem;
  padding-top: 0.5rem;
}

.header.scrolled .header-right {
  padding-top: 0;
  flex-direction: row;
  align-items: center;
  gap: 2rem;
}

.header.scrolled .contact-info {
  display: none;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-links a {
  font-weight: 500;
  color: var(--color-text);
  font-size: 0.85rem;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-accent);
}

.nav-links .separator {
  color: var(--color-border);
  font-size: 0.8rem;
}

.contact-info {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  line-height: 1.2;
}

.contact-info .phone {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-primary);
  font-family: var(--font-heading);
  letter-spacing: 0.05em;
}

.contact-info .hours {
  font-size: 0.75rem;
  color: var(--color-text-light);
}

.header-action {
  min-width: 180px;
  padding: 0 1rem;
  background-color: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  border-left: 1px solid var(--color-border);
}

.header-contact-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-accent);
  color: #FFF !important;
  border-radius: 4px;
  padding: 0.8rem 1.5rem;
  text-align: center;
  gap: 0.5rem;
  transition: var(--transition);
  box-shadow: 0 4px 10px rgba(37, 99, 235, 0.2);
}

.header-contact-btn:hover {
  background-color: var(--color-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 15px rgba(37, 99, 235, 0.3);
}

.header-contact-btn svg {
  width: 18px;
  height: 18px;
  stroke-width: 2;
}

.header-contact-btn span {
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.mobile-menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-primary);
  margin-bottom: 5px;
  transition: var(--transition);
}

.mobile-menu-btn span:last-child {
  margin-bottom: 0;
}

/* Footer */
.footer {
  background-color: var(--color-primary);
  color: #FFF;
  padding: 4rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-col h3 {
  color: #FFF;
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.footer-col p {
  color: #94A3B8;
  margin-bottom: 0.5rem;
}

.footer-links li {
  margin-bottom: 0.8rem;
}

.footer-links a {
  color: #94A3B8;
}

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

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: #94A3B8;
  font-size: 0.9rem;
}

/* Utilities for Animation */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 991px) {
  .section-title {
    font-size: 2rem;
  }
}

@media (max-width: 768px) {

  .contact-info,
  .company-tagline,
  .header-action,
  .nav-links .separator {
    display: none;
  }

  .nav-links {
    position: fixed;
    top: var(--header-height);
    left: 100%;
    width: 100%;
    height: calc(100vh - var(--header-height));
    background-color: var(--color-bg);
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding-top: 4rem;
    gap: 1rem;
    transition: var(--transition);
  }

  .nav-links a {
    font-size: 1.5rem;
    font-weight: 600;
    padding: 1rem 2rem;
    width: 100%;
    text-align: center;
  }

  .nav-links.active {
    left: 0;
  }

  .mobile-contact-area {
    display: flex !important;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    margin-top: 2rem;
    padding: 2rem 0;
    border-top: 1px solid var(--color-border);
    width: 80%;
  }

  .mobile-contact-info {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-text);
  }

  .mobile-contact-info .phone {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--color-primary);
    font-family: var(--font-heading);
    letter-spacing: 0.05em;
  }

  .mobile-contact-info .hours {
    font-size: 0.9rem;
    color: var(--color-text-light);
  }

  .mobile-contact-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #FFF !important;
    background-color: var(--color-accent);
    font-weight: bold;
    font-size: 1.25rem;
    padding: 1.2rem 3rem;
    border-radius: 4px;
    box-shadow: 0 4px 10px rgba(37, 99, 235, 0.2);
    width: 100%;
    max-width: 300px;
  }

  .mobile-menu-btn {
    display: block;
    z-index: 1001;
  }

  .mobile-menu-btn.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
  }

  .mobile-menu-btn.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}