/*
  TECH-i サイト用カスタム CSS
  - Tailwind CSS を補完する形で軽量なユーティリティとアニメーションを定義しています。
*/

/* ルート変数: 色の主要定義 */
:root {
  --primary-red: #dc2626;
  --primary-red-light: #ef4444;
  --primary-red-dark: #991b1b;
}

/* Font Setup */
html {
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", "Inter", "Helvetica Neue",
    sans-serif;
  scroll-behavior: smooth;
}

body {
  font-family:
    "Inter",
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    "Helvetica Neue",
    sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.font-inter {
  font-family: "Inter", sans-serif;
}

.font-plus-jakarta {
  font-family: "Plus Jakarta Sans", sans-serif;
}

/* Responsive Display Fixes - Override Tailwind's .hidden class */
@media (min-width: 640px) {
  .hidden.sm\:inline-block,
  .hidden[class*="sm:inline-block"] {
    display: inline-block !important;
  }
}

@media (min-width: 768px) {
  .hidden.md\:flex,
  .hidden[class*="md:flex"] {
    display: flex !important;
  }
}

/*
  スムーススクロール / ベース設定
  Lenis を使用するため、ブラウザの標準 scroll-behavior は補助的に指定しています。
*/
html {
  scroll-behavior: smooth;
}

/* ページ全体の背景色と文字色を暗めに固定（ダークテーマ） */
body {
  background-color: #000;
  color: #fff;
}

/* Animations */
@keyframes fade-in {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes blob {
  0%,
  100% {
    transform: translate(0, 0) scale(1);
  }
  33% {
    transform: translate(30px, -50px) scale(1.1);
  }
  66% {
    transform: translate(-20px, 20px) scale(0.9);
  }
}

@keyframes slide-up {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* フェードイン汎用クラス
   - 要素に .animate-fade-in を付けると遅延なしでフェードインします。
   - 遅延を付けたい場合は .animation-delay-200 / 400 / 600 を併用してください。 */
.animate-fade-in {
  animation: fade-in 0.8s ease-out forwards;
  opacity: 0;
}

.animate-blob {
  /* 背景装飾用のゆっくりした揺れアニメーション */
  animation: blob 7s infinite;
}

.animation-delay-200 {
  animation-delay: 0.2s;
}

.animation-delay-400 {
  animation-delay: 0.4s;
}

.animation-delay-600 {
  animation-delay: 0.6s;
}

.animation-delay-2000 {
  animation-delay: 2s;
}

.animation-delay-4000 {
  animation-delay: 4s;
}

/* Tailwind Custom Animations */
.animate-bounce {
  /* スクロールを促すインジケーター用バウンス */
  animation: bounce 1s infinite;
}

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

/* Hover Effects */
.hover-scale {
  transition: transform 0.3s ease;
}

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

/* スクロール時に段階的に表示する */
.scroll-fade {
  opacity: 0;
  transform: translateY(40px);
  transition:
    opacity 0.6s ease-out,
    transform 0.6s ease-out;
}

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

/* ヒーローセクション専用の背景調整 */
#home {
  background: linear-gradient(135deg, #1a1a1a 0%, #2d0000 50%, #1a1a1a 100%);
  position: relative;
}

/* ヒーローセクション内のテキストにカーニングを適用 */
#home h1,
#home p,
#home a {
  letter-spacing: -0.02em;
}

#home::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="rgba(255,255,255,.05)" stroke-width="1"/></pattern></defs><rect width="100%" height="100%" fill="rgba(0,0,0,.5)"/><rect width="100%" height="100%" fill="url(%23grid)" /></svg>');
  opacity: 0.1;
  pointer-events: none;
}

/* Text Gradients */
.text-gradient {
  background: linear-gradient(135deg, #dc2626 0%, #ef4444 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Glass Morphism */
.glass {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Service Cards Animation */
.service-card {
  transition: all 0.3s ease;
  transform: translateY(0);
}

.service-card:hover {
  transform: translateY(-8px);
  border-color: rgb(220, 38, 38);
}

/* Button Styles */
button,
a.btn {
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
}

button:hover,
a.btn:hover {
  transform: translateY(-2px);
}

/* Smooth Scroll with CSS */
html {
  scroll-behavior: smooth;
}

/* Mobile Responsive */
@media (max-width: 768px) {
  h1 {
    font-size: 2.5rem;
  }

  h2 {
    font-size: 2rem;
  }

  .container {
    padding: 0 1rem;
  }
}

/* Dark Mode Defaults */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: #000;
}

::-webkit-scrollbar-thumb {
  background: #444;
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: #666;
}

/* Link Transitions */
a {
  transition: color 0.2s ease;
}

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

/* Focus Styles (Accessibility) */
button:focus,
a:focus {
  outline: 2px solid var(--primary-red);
  outline-offset: 2px;
}

/* Intersection Observer Animation */
.section-animate {
  opacity: 0;
  transform: translateY(60px);
  transition:
    opacity 0.8s ease-out,
    transform 0.8s ease-out;
}

.section-animate.animate-in {
  opacity: 1;
  transform: translateY(0);
}

/* Code Block Styling */
code {
  background: rgba(255, 0, 0, 0.05);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: "Courier New", monospace;
}

pre {
  background: #1a1a1a;
  border: 1px solid #333;
  border-radius: 8px;
  padding: 1rem;
  overflow-x: auto;
}

/* Print Styles */
@media print {
  body {
    background: white;
    color: black;
  }

  a {
    text-decoration: underline;
  }
}

/* Loading Skeleton */
.skeleton {
  background: linear-gradient(90deg, #1a1a1a 25%, #2a2a2a 50%, #1a1a1a 75%);
  background-size: 200% 100%;
  animation: loading 1.5s infinite;
}

@keyframes loading {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

/* Utility Classes */
.text-red-accent {
  color: var(--primary-red-light);
}

.border-red-accent {
  border-color: var(--primary-red-light);
}

.bg-red-accent-light {
  background-color: rgba(220, 38, 38, 0.1);
}

/* Container Max Widths */
.container {
  max-width: 1280px;
}

/* Grid Responsive */
@media (max-width: 1024px) {
  .grid-cols-3 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  }
}

/* Transition Utilities */
.transition-all {
  transition: all 0.3s ease;
}

.duration-300 {
  transition-duration: 300ms;
}

.duration-500 {
  transition-duration: 500ms;
}

/* Shadow Utilities */
.shadow-red-500\/50 {
  box-shadow: 0 0 20px rgba(220, 38, 38, 0.5);
}

/* Gradient Text */
.gradient-text {
  background: linear-gradient(135deg, #dc2626 0%, #ef4444 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradient-shift 3s ease infinite;
}

@keyframes gradient-shift {
  0%,
  100% {
    filter: hue-rotate(0deg);
  }
  50% {
    filter: hue-rotate(10deg);
  }
}

/* Responsive Typography */
@media (max-width: 640px) {
  .text-5xl {
    font-size: 2.5rem;
    line-height: 2.8rem;
  }

  .text-3xl {
    font-size: 1.875rem;
  }
}

/* Accessibility: Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* High Contrast Mode */
@media (prefers-contrast: more) {
  body {
    color: #fff;
  }

  a {
    text-decoration: underline;
  }
}

/* Dark Theme Enhancements */
html {
  color-scheme: dark;
}

/* Z-index Management */
.z-nav {
  z-index: 50;
}

.z-modal {
  z-index: 100;
}

.z-tooltip {
  z-index: 75;
}

/* Mobile Menu Visibility Control */
.hidden {
  display: none !important;
}

.hidden.show {
  display: block !important;
}

#mobile-menu {
  display: none;
  transition: all 0.3s ease-in-out;
}

#mobile-menu:not(.hidden) {
  display: block;
}

#mobile-menu.show {
  display: block;
  animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}