/*
Theme Name: myportfolio
Author: Yusuke Sasaki
Description: ポートフォリオのために作成したオリジナルテーマです。
Version: 1.0
*/

/* Base */
:root {
  --color-primary: #000;
  --color-bg: #fff;
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  line-height: 1.5;
  color: var(--color-gray-900);
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* Typography */
h1,
h2,
h3 {
  line-height: 1.2;
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: 700;
  margin-bottom: 1.5rem;
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 2rem;
}

h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(8px);
  z-index: 1000;
  opacity: 0;
  transform: translateY(-50px);
  transition: opacity 1s ease, transform 1s ease;
}

.header.is-animated {
  opacity: 1;
  transform: translateY(0);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 4rem;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  position: relative;
  z-index: 5;
}

.nav-links {
  display: none;
  list-style: none;
  gap: 2rem;
}

.nav-links a {
  color: var(--color-gray-600);
  text-decoration: none;
  transition: color 0.3s;
}

.nav-links a:hover {
  color: var(--color-gray-900);
}

.menu-btn {
  display: block;
  cursor: pointer;
  position: relative;
  z-index: 5;
  width: 40px;
  height: 30px;
  background-color: transparent;
  border: none;
}

.menu-btn span {
  width: 100%;
  height: 2px;
  background-color: #000;
  position: absolute;
  transition: ease 0.3s;
  display: block;
}

.menu-btn span:nth-of-type(1) {
  top: 0;
}

.menu-btn span:nth-of-type(2) {
  top: 50%;
  transform: translateY(-50%);
}

.menu-btn span:nth-of-type(3) {
  bottom: 0;
}

.menu-btn.active span:nth-of-type(1) {
  top: 50%;
  transform: translateY(-50%) rotate(45deg);
}

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

.menu-btn.active span:nth-of-type(3) {
  bottom: 50%;
  transform: translateY(50%) rotate(-45deg);
}

.show {
  display: flex;
  flex-direction: column;
  position: fixed;
  z-index: 1;
  background-color: #fff;
  width: 100%;
  top: 0;
  left: 0;
  justify-content: center;
  align-items: center;
  gap: 3rem;
  padding: 6rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

@media (min-width: 768px) {
  .menu-btn {
    display: none;
  }

  .nav-links {
    display: flex;
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  padding: 0.75rem 1.5rem;
  border-radius: 0.375rem;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.3s;
}

.btn-primary {
  background: var(--color-gray-900);
  color: white;
}

.btn-primary:hover {
  background: var(--color-gray-800);
}

.btn-secondary {
  border: 1px solid var(--color-gray-300);
  color: var(--color-gray-900);
}

.btn-secondary:hover {
  background: var(--color-gray-50);
}

/* Hero */
.hero {
  padding: 8rem 0 4rem;
}

.hero p {
  font-size: 1.25rem;
  color: var(--color-gray-600);
  max-width: 36rem;
  margin-bottom: 2rem;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Services */
.services {
  padding: 6rem 0;
  background: var(--color-gray-50);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.service-card {
  background: white;
  padding: 2rem;
  border-radius: 0.5rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.service-card i {
  font-size: 2rem;
  margin-bottom: 1rem;
}

/* Work */
.work {
  padding: 6rem 0;
}
.work-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.work-card {
  display: block;
  border-radius: 0.5rem;
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  text-decoration: none;
  color: inherit;
}

.work-image {
  position: relative;
  padding-top: 56.25%;
  overflow: hidden;
}

.work-image img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}

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

.work-content {
  padding: 1.5rem;
  background: white;
}

.category {
  font-size: 0.875rem;
  color: var(--color-gray-600);
  margin-right: 0.5rem;
}

/* Profile */
.profile {
  padding: 6rem 0;
  background: var(--color-gray-50);
}

.profile-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
}

@media (min-width: 768px) {
  .profile-grid {
    grid-template-columns: 1fr 1fr;
  }
}
.profile-content p {
  margin-bottom: 0.5rem;
}
.profile-image img {
  width: 100%;
  border-radius: 0.5rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.skills {
  display: grid;
  gap: 1.5rem;
}

.skill-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}

.skill-bar {
  height: 0.5rem;
  background: var(--color-gray-200);
  border-radius: 9999px;
  overflow: hidden;
}

.skill-progress {
  height: 100%;
  background: var(--color-gray-900);
  border-radius: 9999px;
  width: 0%;
  transition: width 2s ease; /* skill-progress animations */
}

/* Contact */
.contact {
  padding: 6rem 0;
  background: var(--color-gray-900);
  color: white;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
}

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

.social-links {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
}

.social-links a {
  color: var(--color-gray-400);
  transition: color 0.3s;
}

.social-links a:hover {
  color: white;
}

.contact-form p {
  display: grid;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--color-gray-800);
  border: 1px solid var(--color-gray-700);
  border-radius: 0.375rem;
  color: white;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--color-gray-500);
}

/* Footer */
.footer {
  background: var(--color-gray-900);
  color: var(--color-gray-400);
  padding: 2rem 0;
  text-align: center;
}

/* Mask background animations */
.mask-bg {
  color: transparent;
  display: inline-block;
  font-weight: bold;
  overflow: hidden;
  position: relative;
  transition: color 0ms 450ms;
}

.mask-bg::after {
  background-color: #111827;
  bottom: 0;
  content: "";
  display: block;
  left: -1px;
  position: absolute;
  right: 0;
  top: 0;
  transform: translateX(-100%);
  transition: transform 1.2s cubic-bezier(0.8, 0, 0.17, 1);
}

.mask-bg.is-animated {
  color: #111827;
}

.mask-bg.is-animated::after {
  animation: mask-bg 1.2s cubic-bezier(0.8, 0, 0.17, 1);
}
.contact-mask-bg {
  color: transparent;
  display: inline-block;
  font-weight: bold;
  overflow: hidden;
  position: relative;
  transition: color 0ms 450ms;
}

.contact-mask-bg::after {
  background-color: #fff;
  bottom: 0;
  content: "";
  display: block;
  left: -1px;
  position: absolute;
  right: 0;
  top: 0;
  transform: translateX(-100%);
  transition: transform 1.2s cubic-bezier(0.8, 0, 0.17, 1);
}

.contact-mask-bg.is-animated {
  color: #fff;
}

.contact-mask-bg.is-animated::after {
  animation: mask-bg 1.2s cubic-bezier(0.8, 0, 0.17, 1);
}

@keyframes mask-bg {
  0% {
    transform: translateX(-100%);
  }
  40%,
  60% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(100%);
  }
}
/* fade-in animations */
.fade-in {
  opacity: 0;
  transform: translateY(50px);
  transition: opacity 1s ease-in-out, transform 1s ease-in-out;
}

.fade-in-visible {
  opacity: 1;
  transform: translateY(0);
}
/* Load Event Animations  */
.smooth {
  clip-path: inset(0 100% 0 0);
  display: inline-block;
  font-weight: bold;
  transition: 1.4s cubic-bezier(0.37, 0, 0.63, 1);
  transition-property: clip-path;
}
.smooth.is-animated {
  clip-path: inset(0);
}