/*
Theme Name: Revonet Modern
Theme URI: https://revonet.co.jp
Author: Revonet Inc.
Author URI: https://revonet.co.jp
Description: A modern, design-focused theme for Revonet
Version: 1.0.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: revonet-modern
*/

/* ============================================
   CSS Variables
============================================ */
:root {
  /* Colors */
  --color-primary: #5872f7;
  --color-primary-dark: #4560e6;
  --color-primary-light: #7b91f9;
  --color-secondary: #1a1a2e;
  --color-accent: #f72585;
  --color-white: #ffffff;
  --color-black: #0a0a0a;
  --color-gray-100: #f8f9fa;
  --color-gray-200: #e9ecef;
  --color-gray-300: #dee2e6;
  --color-gray-400: #ced4da;
  --color-gray-500: #adb5bd;
  --color-gray-600: #6c757d;
  --color-gray-700: #495057;
  --color-gray-800: #343a40;
  --color-gray-900: #212529;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #5872f7 0%, #7b91f9 50%, #a78bfa 100%);
  --gradient-dark: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
  --gradient-hero: linear-gradient(135deg, #5872f7 0%, #7c3aed 50%, #f72585 100%);

  /* Typography */
  --font-family-base: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-family-heading: 'Outfit', 'Noto Sans JP', sans-serif;
  --font-size-base: 16px;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-bold: 700;
  --line-height-base: 1.8;
  --line-height-heading: 1.3;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 8rem;
  --spacing-xxl: 12rem;

  /* Layout */
  --container-max-width: 1200px;
  --container-padding: 1.5rem;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(88, 114, 247, 0.08);
  --shadow-md: 0 8px 30px rgba(88, 114, 247, 0.12);
  --shadow-lg: 0 20px 60px rgba(88, 114, 247, 0.15);
  --shadow-xl: 0 30px 80px rgba(88, 114, 247, 0.2);

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 40px;
  --radius-full: 9999px;
}

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

html {
  font-size: var(--font-size-base);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-base);
  color: var(--color-gray-800);
  background-color: var(--color-white);
  overflow-x: hidden;
}

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

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: clamp(1.25rem, 2vw, 1.5rem); }

p {
  margin-bottom: 1em;
}

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

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

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

.section {
  padding: var(--spacing-xl) 0;
}

@media (max-width: 767px) {
  .section {
    padding: var(--spacing-lg) 0;
  }
}

.section--gray {
  background-color: var(--color-gray-100);
}

.section--dark {
  background: var(--gradient-dark);
  color: var(--color-white);
}

.section--dark h2,
.section--dark h3 {
  color: var(--color-white);
}

/* ============================================
   Header
============================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: var(--spacing-sm) 0;
  transition: all var(--transition-base);
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-sm);
}

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

.site-logo img {
  height: 40px;
  width: auto;
  transition: transform var(--transition-base), filter var(--transition-base);
  filter: brightness(0) invert(1);
}

.site-logo:hover img {
  transform: scale(1.05);
}

/* Navigation */
.main-nav {
  display: none;
}

@media (min-width: 992px) {
  .main-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
  }
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  list-style: none;
}

.nav-menu a {
  position: relative;
  font-weight: var(--font-weight-medium);
  color: var(--color-white);
  padding: var(--spacing-xs) 0;
  transition: color var(--transition-fast);
}

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

.nav-menu a:hover,
.nav-menu a.active {
  color: var(--color-primary);
}

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

.site-header.scrolled .site-logo img {
  filter: none;
}

.site-header.scrolled .nav-menu a {
  color: var(--color-gray-700);
}

.site-header.scrolled .header-tel {
  color: var(--color-secondary);
}

.site-header.scrolled .menu-toggle span {
  background: var(--color-secondary);
}

/* Header CTA */
.header-cta {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.header-tel {
  display: none;
  align-items: center;
  gap: 0.5rem;
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
  transition: color var(--transition-fast), opacity var(--transition-fast);
}

.header-tel:hover {
  color: rgba(255, 255, 255, 0.7);
}

.site-header.scrolled .header-tel:hover {
  color: var(--color-primary);
  opacity: 1;
}

@media (min-width: 992px) {
  .header-tel {
    display: flex;
  }
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 10px;
  background: none;
  border: none;
  cursor: pointer;
}

@media (min-width: 992px) {
  .menu-toggle {
    display: none;
  }
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-white);
  transition: all var(--transition-base);
}

.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

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

.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* Mobile Navigation */
.mobile-nav {
  position: fixed;
  top: 0;
  right: -100%;
  width: 100%;
  max-width: 400px;
  height: 100vh;
  background: var(--color-white);
  padding: var(--spacing-xl) var(--spacing-md);
  transition: right var(--transition-base);
  z-index: 999;
  overflow-y: auto;
}

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

.mobile-nav-menu {
  list-style: none;
  margin-top: var(--spacing-lg);
}

.mobile-nav-menu li {
  border-bottom: 1px solid var(--color-gray-200);
}

.mobile-nav-menu a {
  display: block;
  padding: var(--spacing-sm) 0;
  font-size: 1.125rem;
  font-weight: var(--font-weight-medium);
  color: var(--color-secondary);
}

.mobile-nav-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  z-index: 998;
}

.mobile-nav-overlay.active {
  opacity: 1;
  visibility: visible;
}

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

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="1" fill="rgba(255,255,255,0.1)"/></svg>');
  background-size: 50px 50px;
  animation: float 20s linear infinite;
}

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

.hero-content {
  position: relative;
  text-align: center;
  color: var(--color-white);
  padding: var(--spacing-xl) var(--container-padding);
}

.hero-logo {
  width: 120px;
  height: auto;
  margin-bottom: var(--spacing-md);
  animation: fadeInUp 0.8s ease;
}

.hero-title {
  font-size: clamp(2rem, 6vw, 4rem);
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
  letter-spacing: 0.1em;
  animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  line-height: 2;
  opacity: 0.9;
  margin-bottom: var(--spacing-lg);
  animation: fadeInUp 0.8s ease 0.4s both;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-sm);
  animation: fadeInUp 0.8s ease 0.6s both;
}

.hero-scroll {
  position: absolute;
  bottom: var(--spacing-md);
  left: 50%;
  transform: translateX(-50%);
  animation: bounce 2s infinite;
}

.hero-scroll span {
  display: block;
  width: 30px;
  height: 50px;
  border: 2px solid rgba(255, 255, 255, 0.5);
  border-radius: 15px;
  position: relative;
}

.hero-scroll span::before {
  content: '';
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  width: 6px;
  height: 6px;
  background: var(--color-white);
  border-radius: 50%;
  animation: scroll 2s infinite;
}

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

@keyframes scroll {
  0% { opacity: 1; top: 8px; }
  100% { opacity: 0; top: 30px; }
}

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

/* ============================================
   Buttons
============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 1rem 2rem;
  font-family: var(--font-family-base);
  font-size: 1rem;
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-base);
}

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

.btn--primary:hover {
  background: var(--color-gray-100);
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.btn--outline {
  background: transparent;
  color: var(--color-white);
  border: 2px solid rgba(255, 255, 255, 0.5);
  transition: all var(--transition-base);
}

.btn--outline:hover {
  background: var(--color-white);
  color: var(--color-primary);
  border-color: var(--color-white);
  transform: translateY(-3px);
  box-shadow: 0 4px 20px rgba(255, 255, 255, 0.3);
}

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

.btn--gradient:hover {
  background: var(--color-white);
  color: var(--color-primary);
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.btn--cta {
  background: var(--color-white);
  color: var(--color-primary);
  font-weight: var(--font-weight-bold);
  box-shadow: 0 4px 20px rgba(255, 255, 255, 0.4);
  animation: pulse 2s infinite;
}

.btn--cta:hover {
  background: var(--color-gray-100);
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(255, 255, 255, 0.5);
}

@keyframes pulse {
  0%, 100% {
    box-shadow: 0 4px 20px rgba(255, 255, 255, 0.4);
  }
  50% {
    box-shadow: 0 4px 30px rgba(255, 255, 255, 0.6);
  }
}

/* ============================================
   Section Headers
============================================ */
.section-header {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.section-label {
  display: inline-block;
  font-family: var(--font-family-heading);
  font-size: 0.875rem;
  font-weight: var(--font-weight-bold);
  letter-spacing: 0.2em;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
  text-transform: uppercase;
}

.section-title {
  margin-bottom: var(--spacing-sm);
}

.section-desc {
  font-size: 1.125rem;
  color: var(--color-gray-600);
}

/* ============================================
   Service Section
============================================ */
.service-grid {
  display: grid;
  gap: var(--spacing-lg);
}

@media (min-width: 768px) {
  .service-grid {
    grid-template-columns: repeat(2, 1fr);
    align-items: center;
  }

  .service-item:nth-child(even) .service-content {
    order: 2;
  }

  .service-item:nth-child(even) .service-image {
    order: 1;
  }
}

.service-item {
  display: contents;
}

.service-content {
  padding: var(--spacing-md);
}

.service-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 80px;
  height: 80px;
  background: var(--gradient-primary);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-md);
  font-size: 2rem;
  color: var(--color-white);
}

.service-title {
  margin-bottom: var(--spacing-sm);
}

.service-lead {
  font-size: 1.25rem;
  font-weight: var(--font-weight-medium);
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.service-image {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.service-image img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform var(--transition-slow);
}

.service-image:hover img {
  transform: scale(1.05);
}

/* ============================================
   Works Section
============================================ */
.works-slider {
  margin: 0 calc(-1 * var(--container-padding));
  padding: var(--spacing-md) 0;
}

.work-item {
  padding: 0 var(--spacing-sm);
}

.work-card {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
}

.work-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-xl);
}

.work-card img {
  width: 100%;
  height: 250px;
  object-fit: cover;
  display: block;
}

.work-card-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--spacing-md);
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
  color: var(--color-white);
  transform: translateY(100%);
  transition: transform var(--transition-base);
}

.work-card:hover .work-card-overlay {
  transform: translateY(0);
}

/* ============================================
   Company Section
============================================ */
.company-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.company-table th,
.company-table td {
  padding: var(--spacing-sm) var(--spacing-md);
  text-align: left;
  border-bottom: 1px solid var(--color-gray-200);
}

.company-table th {
  width: 30%;
  background: var(--color-gray-100);
  font-weight: var(--font-weight-medium);
  color: var(--color-secondary);
}

.company-table tr:last-child th,
.company-table tr:last-child td {
  border-bottom: none;
}

@media (max-width: 767px) {
  .company-table th,
  .company-table td {
    display: block;
    width: 100%;
  }

  .company-table th {
    background: var(--color-primary);
    color: var(--color-white);
  }
}

/* ============================================
   Contact Section
============================================ */
.contact-wrapper {
  display: grid;
  gap: var(--spacing-lg);
}

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

.contact-info {
  background: var(--gradient-primary);
  color: var(--color-white);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
}

@media (max-width: 767px) {
  .contact-info {
    padding: var(--spacing-md);
  }
}

.contact-info h3 {
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
}

.contact-tel {
  font-size: 1.5rem;
  font-weight: var(--font-weight-bold);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-white);
}

.contact-form {
  background: var(--color-white);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

@media (max-width: 767px) {
  .contact-form {
    padding: var(--spacing-md);
  }
}

.form-group {
  margin-bottom: var(--spacing-md);
}

@media (max-width: 767px) {
  .form-group {
    margin-bottom: var(--spacing-sm);
  }
}

.form-label {
  display: block;
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--spacing-xs);
  color: var(--color-secondary);
}

.form-label .required {
  color: var(--color-accent);
  font-size: 0.75rem;
  margin-left: 0.5rem;
}

.form-input,
.form-textarea {
  width: 100%;
  padding: 1rem;
  font-family: var(--font-family-base);
  font-size: 1rem;
  border: 2px solid var(--color-gray-300);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

.form-textarea {
  min-height: 150px;
  resize: vertical;
}

/* ============================================
   Footer
============================================ */
.site-footer {
  background: var(--gradient-dark);
  color: var(--color-white);
  padding: var(--spacing-xl) 0 var(--spacing-md);
}

@media (max-width: 767px) {
  .site-footer {
    padding: var(--spacing-lg) 0 var(--spacing-sm);
  }
}

.footer-inner {
  display: grid;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

@media (max-width: 767px) {
  .footer-inner {
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
  }
}

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

.footer-brand p {
  opacity: 0.8;
  margin-top: var(--spacing-sm);
}

.footer-nav h4,
.footer-contact h4 {
  color: var(--color-white);
  margin-bottom: var(--spacing-sm);
}

.footer-nav ul {
  list-style: none;
}

.footer-nav li {
  margin-bottom: var(--spacing-xs);
}

.footer-nav a {
  color: rgba(255, 255, 255, 0.8);
  transition: color var(--transition-fast);
}

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

.footer-contact p {
  opacity: 0.8;
  margin-bottom: var(--spacing-xs);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
  opacity: 0.6;
  font-size: 0.875rem;
}

/* ============================================
   Scroll Animations
============================================ */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.fade-in-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.fade-in-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ============================================
   Utilities
============================================ */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ============================================
   Page Top Button
============================================ */
.page-top-btn {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  background: var(--gradient-primary);
  color: var(--color-white);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition-base);
  z-index: 900;
}

.page-top-btn.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.page-top-btn:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

@media (max-width: 767px) {
  .page-top-btn {
    bottom: 20px;
    right: 20px;
    width: 44px;
    height: 44px;
    font-size: 1rem;
  }
}