/*
Theme Name: Arvens
Theme URI: https://arvens.jp
Author: Arvens
Description: 営業（商品・サービス提案・販売）を事業内容とする「Arvens」のカスタムテーマ
Version: 1.0.0
Text Domain: arvens
*/

/* ========================================
   CSS Variables
   ======================================== */
:root {
  --color-primary: #1a56db;
  --color-primary-dark: #1544b0;
  --color-accent: #0ea5e9;
  --color-accent-light: #e0f2fe;
  --color-text: #1e293b;
  --color-text-light: #64748b;
  --color-white: #ffffff;
  --color-bg: #f8fafc;
  --color-bg-dark: #0f172a;
  --color-border: #e2e8f0;
  --font-family: 'Noto Sans JP', sans-serif;
  --max-width: 1200px;
  --header-height: 72px;
  --transition: 0.3s ease;
}

/* ========================================
   Reset & Base
   ======================================== */
*,
*::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);
  line-height: 1.8;
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
}

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

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

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

ul {
  list-style: none;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* ========================================
   Header / Navigation
   ======================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background-color: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(8px);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
  z-index: 1000;
  transition: background-color var(--transition);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.site-logo a {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.05em;
}

.site-logo a:hover {
  color: var(--color-primary-dark);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-menu a {
  color: var(--color-text);
  font-size: 0.9rem;
  font-weight: 500;
  position: relative;
  padding: 4px 0;
}

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

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

.nav-cta {
  background-color: var(--color-primary);
  color: var(--color-white) !important;
  padding: 8px 24px !important;
  border-radius: 6px;
  font-weight: 600;
}

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

.nav-cta:hover {
  background-color: var(--color-primary-dark);
  color: var(--color-white) !important;
}

/* Hamburger Menu */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 1001;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-text);
  transition: transform var(--transition), opacity var(--transition);
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ========================================
   Section Common
   ======================================== */
.section {
  padding: 100px 0;
}

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

.section-title {
  font-size: 2rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 16px;
  color: var(--color-text);
}

.section-subtitle {
  text-align: center;
  color: var(--color-text-light);
  margin-bottom: 60px;
  font-size: 1rem;
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #1a56db 0%, #0ea5e9 100%);
  color: var(--color-white);
  text-align: center;
  padding: 0 20px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 40px 40px;
  animation: heroPattern 20s linear infinite;
}

@keyframes heroPattern {
  0% { transform: translate(0, 0); }
  100% { transform: translate(40px, 40px); }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.hero-title {
  font-size: 3rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 24px;
  letter-spacing: 0.02em;
}

.hero-text {
  font-size: 1.2rem;
  margin-bottom: 40px;
  opacity: 0.9;
  line-height: 1.8;
}

.btn {
  display: inline-block;
  padding: 16px 40px;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  transition: all var(--transition);
  cursor: pointer;
  border: none;
}

.btn-white {
  background-color: var(--color-white);
  color: var(--color-primary);
}

.btn-white:hover {
  background-color: var(--color-bg);
  color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(26, 86, 219, 0.3);
}

/* ========================================
   About Section
   ======================================== */
.about-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.about-content p {
  font-size: 1.05rem;
  color: var(--color-text-light);
  line-height: 2;
  margin-bottom: 16px;
}

/* ========================================
   Services Section
   ======================================== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.service-card {
  background-color: var(--color-white);
  border-radius: 12px;
  padding: 40px 32px;
  text-align: center;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  transition: transform var(--transition), box-shadow var(--transition);
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.1);
}

.service-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 24px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: var(--color-white);
}

.service-card h3 {
  font-size: 1.25rem;
  margin-bottom: 16px;
  color: var(--color-text);
}

.service-card p {
  color: var(--color-text-light);
  font-size: 0.95rem;
  line-height: 1.8;
}

/* ========================================
   Why Us Section
   ======================================== */
.whyus-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.whyus-item {
  text-align: center;
  padding: 32px 24px;
}

.whyus-number {
  font-size: 3rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 16px;
  opacity: 0.2;
}

.whyus-item h3 {
  font-size: 1.15rem;
  margin-bottom: 12px;
  color: var(--color-text);
}

.whyus-item p {
  color: var(--color-text-light);
  font-size: 0.95rem;
  line-height: 1.8;
}

/* ========================================
   Contact Section
   ======================================== */
.contact-section {
  background: linear-gradient(135deg, #1a56db 0%, #0ea5e9 100%);
  color: var(--color-white);
}

.contact-section .section-title {
  color: var(--color-white);
}

.contact-section .section-subtitle {
  color: rgba(255, 255, 255, 0.8);
}

.contact-inner {
  max-width: 700px;
  margin: 0 auto;
  background-color: var(--color-white);
  border-radius: 16px;
  padding: 48px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.contact-inner .wpcf7 input[type="text"],
.contact-inner .wpcf7 input[type="email"],
.contact-inner .wpcf7 input[type="tel"],
.contact-inner .wpcf7 textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-family: var(--font-family);
  font-size: 1rem;
  transition: border-color var(--transition);
  color: var(--color-text);
}

.contact-inner .wpcf7 input:focus,
.contact-inner .wpcf7 textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.1);
}

.contact-inner .wpcf7 input[type="submit"] {
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: 14px 48px;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font-family);
}

.contact-inner .wpcf7 input[type="submit"]:hover {
  background-color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(26, 86, 219, 0.3);
}

.contact-inner .wpcf7 label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: var(--color-text);
  font-size: 0.95rem;
}

.contact-inner .wpcf7 p {
  margin-bottom: 20px;
  color: var(--color-text);
}

.contact-link {
  text-align: center;
  margin-top: 24px;
}

.contact-link a {
  color: rgba(255, 255, 255, 0.9);
  text-decoration: underline;
  font-size: 0.9rem;
}

.contact-link a:hover {
  color: var(--color-white);
}

/* ========================================
   Contact Page Template
   ======================================== */
.page-contact {
  padding-top: calc(var(--header-height) + 60px);
  padding-bottom: 100px;
  min-height: 80vh;
}

.page-contact .contact-form-wrap {
  max-width: 700px;
  margin: 0 auto;
}

.page-contact .page-title {
  font-size: 2rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 16px;
}

.page-contact .page-description {
  text-align: center;
  color: var(--color-text-light);
  margin-bottom: 48px;
}

/* ========================================
   Footer
   ======================================== */
.site-footer {
  background-color: var(--color-bg-dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 48px 0 24px;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
  text-align: center;
}

.footer-logo {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 16px;
}

.footer-info {
  font-size: 0.85rem;
  line-height: 1.8;
  margin-bottom: 24px;
}

.footer-copyright {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.4);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 768px) {
  .hamburger {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background-color: var(--color-white);
    flex-direction: column;
    justify-content: center;
    gap: 24px;
    padding: 40px;
    box-shadow: -4px 0 20px rgba(0, 0, 0, 0.1);
    transition: right var(--transition);
  }

  .nav-menu.active {
    right: 0;
  }

  .nav-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.4);
    z-index: 999;
  }

  .nav-overlay.active {
    display: block;
  }

  .hero-title {
    font-size: 2rem;
  }

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

  .section {
    padding: 64px 0;
  }

  .section-title {
    font-size: 1.6rem;
  }

  .services-grid,
  .whyus-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .contact-inner {
    padding: 32px 20px;
  }
}

@media (max-width: 1024px) and (min-width: 769px) {
  .services-grid,
  .whyus-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}