/* --- Reset & base --- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

/* Catppuccin Macchiato–inspired palette — https://github.com/catppuccin/catppuccin */
:root {
  /* Mid-dark base colors (around #24273a, not too black) */
  --ctp-crust: #181926;
  --ctp-mantle: #1e2030;
  --ctp-base: #24273a;
  --ctp-surface0: #363a4f;
  --ctp-surface1: #494d64;
  --ctp-surface2: #5b6078;
  --ctp-overlay0: #6e738d;
  --ctp-overlay1: #8087a2;
  --ctp-subtext0: #a5adcb;
  --ctp-subtext1: #b8c0e0;
  --ctp-text: #cad3f5;
  --ctp-lavender: #b7bdf8;
  --ctp-blue: #8aadf4;
  --ctp-sapphire: #7dc4e4;
  --ctp-sky: #91d7e3;
  --ctp-mauve: #c6a0f6;
  --ctp-pink: #f5bde6;
  --ctp-peach: #f5a97f;

  --color-bg: var(--ctp-base);
  --color-surface: var(--ctp-surface0);
  --color-surface-raised: var(--ctp-surface1);
  --color-text: var(--ctp-text);
  --color-text-muted: var(--ctp-subtext0);
  --color-accent: var(--ctp-blue);
  --color-accent-hover: var(--ctp-sapphire);
  --color-border: var(--ctp-surface1);
  --color-tag-bg: var(--ctp-surface1);
  --color-tag-text: var(--ctp-text);
  --color-tag-overlay-bg: rgba(24, 25, 38, 0.82);
  --color-tag-overlay-text: var(--ctp-text);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.35);
  --shadow-md: 0 12px 28px rgba(0, 0, 0, 0.38);
  --shadow-modal: 0 24px 56px rgba(0, 0, 0, 0.5);
  --radius: 12px;
  --font-sans: "Noto Sans JP", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
  --max-width: 1200px;
  --transition: 0.25s ease;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
}

body.modal-open {
  overflow: hidden;
}

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

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

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

.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;
}

/* --- Header --- */
.site-header {
  background: linear-gradient(
    145deg,
    var(--ctp-crust) 0%,
    var(--ctp-mantle) 40%,
    var(--ctp-base) 75%,
    var(--ctp-surface0) 100%
  );
  color: var(--ctp-text);
  padding: 3rem 0 4rem;
  border-bottom: 1px solid var(--ctp-surface1);
}

.site-header__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.site-header__eyebrow {
  margin: 0 0 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ctp-mauve);
}

.site-header__title {
  margin: 0 0 1rem;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  line-height: 1.3;
  color: var(--ctp-text);
}

.site-header__lead {
  margin: 0;
  max-width: 42rem;
  font-size: 1.05rem;
  color: var(--ctp-subtext1);
}

/* --- Main --- */
.main {
  max-width: var(--max-width);
  margin: -2rem auto 0;
  padding: 0 1.5rem 4rem;
}

/* --- Tag filter --- */
.tag-filter {
  margin-bottom: 1.75rem;
  padding: 1.25rem 1.5rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.tag-filter__title {
  margin: 0 0 0.25rem;
  font-size: 1rem;
  font-weight: 700;
  color: var(--ctp-text);
}

.tag-filter__hint {
  margin: 0 0 1rem;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.tag-filter__columns {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.25rem;
}

.tag-filter__group-title {
  margin: 0 0 0.65rem;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--ctp-subtext1);
}

.tag-filter__group-options {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.5rem;
}

.tag-filter__label {
  cursor: pointer;
  min-width: 0;
}

.tag-filter__label .tag-filter__chip {
  display: block;
  width: 100%;
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

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

.tag-filter__chip {
  display: inline-block;
  padding: 0.35rem 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-tag-text);
  background: var(--ctp-mantle);
  border: 1px solid var(--ctp-surface2);
  border-radius: 999px;
  transition: background var(--transition), border-color var(--transition),
    color var(--transition);
}

.tag-filter__input:focus-visible + .tag-filter__chip {
  outline: 2px solid var(--ctp-blue);
  outline-offset: 2px;
}

.tag-filter__input:checked + .tag-filter__chip {
  outline: 2px solid var(--ctp-text);
  outline-offset: 1px;
  box-shadow: 0 0 0 1px rgba(24, 25, 38, 0.35);
}

.tag-filter__label:hover .tag-filter__input:not(:checked) + .tag-filter__chip {
  border-color: var(--ctp-lavender);
  background: var(--ctp-surface1);
}

.tag-filter__status {
  margin: 0.875rem 0 0;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

@media (max-width: 900px) {
  .tag-filter__columns {
    grid-template-columns: 1fr;
  }
}

.no-results {
  margin: 1.5rem 0 0;
  padding: 1.25rem;
  text-align: center;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  background: var(--color-surface);
  border: 1px dashed var(--ctp-surface2);
  border-radius: var(--radius);
}

/* --- Projects grid --- */
.projects-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 640px) {
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .projects-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .project-card[data-project-id="10"] {
    grid-column: 2;
  }
}

/* --- Project card --- */
.project-card {
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: box-shadow var(--transition), border-color var(--transition);
}

.project-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--ctp-surface2);
}

.project-card[hidden] {
  display: none;
}

.project-card__media {
  position: relative;
  aspect-ratio: 16 / 9;
  background: var(--ctp-mantle);
  overflow: hidden;
}

.project-card__media-tags {
  position: absolute;
  top: 0.625rem;
  left: 0.625rem;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  max-width: calc(100% - 1.25rem);
  margin: 0;
  padding: 0;
  list-style: none;
}

.project-card__media-tag {
  padding: 0.2rem 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  line-height: 1.4;
  color: var(--color-tag-overlay-text);
  background: var(--color-tag-overlay-bg);
  border: 1px solid var(--ctp-surface2);
  border-radius: 6px;
  backdrop-filter: blur(4px);
}

.project-card__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.project-card__body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 1.25rem 1.25rem 1rem;
  gap: 0.5rem;
}

.project-card__title {
  margin: 0;
  font-size: 1.125rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ctp-text);
}

.project-card__summary {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

.project-card__toggle {
  margin-top: auto;
  padding: 0.625rem 1rem;
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--ctp-blue);
  background: var(--ctp-mantle);
  border: 1px solid var(--ctp-surface2);
  border-radius: 8px;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition),
    color var(--transition);
}

.project-card__toggle:hover {
  color: var(--ctp-lavender);
  background: var(--ctp-surface1);
  border-color: var(--ctp-overlay0);
}

.project-card__toggle:focus-visible {
  outline: 2px solid var(--ctp-blue);
  outline-offset: 2px;
}

/* --- Modal --- */
.modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.modal[hidden] {
  display: none;
}

.modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(24, 25, 38, 0.62);
  backdrop-filter: blur(4px);
}

.modal__dialog {
  position: relative;
  display: flex;
  flex-direction: column;
  width: min(80vw, 1200px);
  height: 90vh;
  max-height: 90vh;
  background: var(--ctp-base);
  border: 1px solid var(--ctp-surface2);
  border-radius: var(--radius);
  box-shadow: var(--shadow-modal);
  overflow: hidden;
  animation: modal-in 0.2s ease;
}

@media (max-width: 639px) {
  .modal__dialog {
    width: calc(100% - 1rem);
    height: auto;
    max-height: 90vh;
  }
}

@keyframes modal-in {
  from {
    opacity: 0;
    transform: scale(0.96) translateY(8px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.modal__close {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  padding: 0;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--ctp-subtext0);
  background: var(--ctp-surface1);
  border: 1px solid var(--ctp-surface2);
  border-radius: 8px;
  cursor: pointer;
  transition: color var(--transition), background var(--transition);
}

.modal__close:hover {
  color: var(--ctp-text);
  background: var(--ctp-surface2);
}

.modal__close:focus-visible {
  outline: 2px solid var(--ctp-blue);
  outline-offset: 2px;
}

.modal__layout {
  min-height: 0;
}

.modal__top {
  display: grid;
  grid-template-columns: minmax(0, 1fr) clamp(200px, 32%, 300px);
  grid-template-rows: auto auto auto auto;
  gap: 0.75rem 1rem;
  align-items: start;
  margin-top: 2.95rem;
}

.modal__tags {
  grid-column: 1;
  grid-row: 1;
}

.modal__title {
  grid-column: 1;
  grid-row: 2;
}

.modal__github {
  grid-column: 1;
  grid-row: 3;
}

.modal__image-wrap {
  grid-column: 2;
  grid-row: 2 / 5;
  align-self: stretch;
  width: 100%;
  min-height: 0;
  margin: 0;
  border: 1px solid var(--ctp-surface2);
  border-radius: 10px;
  overflow: hidden;
  background: var(--ctp-mantle);
}

.modal__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.modal__content {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 0.75rem;
  min-height: 0;
  padding: 0 1.5rem 1.5rem;
  overflow-y: auto;
  background: var(--ctp-base);
}

@media (min-width: 640px) {
  .modal__content {
    padding: 0 1.75rem 1.75rem;
  }
}

@media (max-width: 639px) {
  .modal__top {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
    margin-top: 2.95rem;
  }

  .modal__tags,
  .modal__title,
  .modal__github,
  .modal__meta,
  .modal__image-wrap {
    grid-column: 1;
    grid-row: auto;
  }

  .modal__image-wrap {
    width: 100%;
    height: clamp(140px, 24vh, 220px);
  }
}

.modal__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
  margin: 0;
  padding: 0;
  list-style: none;
  align-self: start;
}

.modal__tag {
  padding: 0.2rem 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--ctp-lavender);
  background: var(--ctp-surface1);
  border: 1px solid var(--ctp-surface2);
  border-radius: 999px;
}

.modal__title {
  margin: 0;
  padding-right: 0;
  font-size: 1.375rem;
  font-weight: 700;
  line-height: 1.35;
  color: var(--ctp-text);
}

.modal__description {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--ctp-subtext1);
}

.modal__github {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  justify-self: start;
  margin-top: 0;
  padding: 0.625rem 1.125rem;
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  color: var(--ctp-crust);
  background: var(--ctp-blue);
  border-radius: 8px;
  transition: background var(--transition);
}

.modal__github:hover {
  color: var(--ctp-crust);
  background: var(--ctp-sapphire);
}

.modal__github:focus-visible {
  outline: 2px solid var(--ctp-lavender);
  outline-offset: 2px;
}

.modal__github-icon {
  flex-shrink: 0;
}

.modal__meta {
  grid-column: 1;
  grid-row: 4;
  display: inline-grid;
  grid-template-columns: max-content max-content;
  gap: 0.4rem 0.75rem;
  margin: 0;
  justify-self: start;
  width: fit-content;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--ctp-surface2);
  border-radius: 10px;
  background: rgba(54, 58, 79, 0.45);
}

.modal__meta dt {
  margin: 0;
  font-size: 0.8125rem;
  color: var(--ctp-subtext0);
}

.modal__meta dd {
  margin: 0;
  font-size: 0.875rem;
  color: var(--ctp-text);
}

/* --- Footer --- */
.site-footer {
  padding: 2rem 1.5rem;
  text-align: center;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  border-top: 1px solid var(--color-border);
  background: var(--ctp-mantle);
}

.site-footer p {
  margin: 0;
}

.site-footer a {
  font-weight: 500;
  text-decoration: none;
  color: var(--ctp-blue);
}

.site-footer a:hover {
  color: var(--ctp-mauve);
  text-decoration: underline;
}

/* --- Tag-specific colors (filter chips, card tags, modal tags) --- */
.tag-filter__chip.tag-dokuji-kaihatsu,
.project-card__media-tag.tag-dokuji-kaihatsu,
.modal__tag.tag-dokuji-kaihatsu {
  background: #8bd5ca;
  border-color: #8bd5ca;
  color: #1e2030;
}

.tag-filter__chip.tag-team-kaihatsu,
.project-card__media-tag.tag-team-kaihatsu,
.modal__tag.tag-team-kaihatsu {
  background: #7dc4e4;
  border-color: #7dc4e4;
  color: #1e2030;
}

.tag-filter__chip.tag-ai-kaihatsu,
.project-card__media-tag.tag-ai-kaihatsu,
.modal__tag.tag-ai-kaihatsu {
  background: #dc8a78;
  border-color: #dc8a78;
  color: #ffffff;
}

.tag-filter__chip.tag-unix,
.project-card__media-tag.tag-unix,
.modal__tag.tag-unix {
  background: #dd7878;
  border-color: #dd7878;
  color: #ffffff;
}

.tag-filter__chip.tag-project-kanri,
.project-card__media-tag.tag-project-kanri,
.modal__tag.tag-project-kanri {
  background: #ea76cb;
  border-color: #ea76cb;
  color: #ffffff;
}

.tag-filter__chip.tag-c,
.project-card__media-tag.tag-c,
.modal__tag.tag-c {
  background: #e64553;
  border-color: #e64553;
  color: #ffffff;
}

.tag-filter__chip.tag-cpp,
.project-card__media-tag.tag-cpp,
.modal__tag.tag-cpp {
  background: #d20f39;
  border-color: #d20f39;
  color: #ffffff;
}

.tag-filter__chip.tag-csharp,
.project-card__media-tag.tag-csharp,
.modal__tag.tag-csharp {
  background: #dd2c46;
  border-color: #dd2c46;
  color: #ffffff;
}

.tag-filter__chip.tag-assembly,
.project-card__media-tag.tag-assembly,
.modal__tag.tag-assembly {
  background: #fe640b;
  border-color: #fe640b;
  color: #ffffff;
}

.tag-filter__chip.tag-java,
.project-card__media-tag.tag-java,
.modal__tag.tag-java {
  background: #df8e1d;
  border-color: #df8e1d;
  color: #ffffff;
}

.tag-filter__chip.tag-python,
.project-card__media-tag.tag-python,
.modal__tag.tag-python {
  background: #40a02b;
  border-color: #40a02b;
  color: #ffffff;
}

.tag-filter__chip.tag-html,
.project-card__media-tag.tag-html,
.modal__tag.tag-html {
  background: #04a5e5;
  border-color: #04a5e5;
  color: #ffffff;
}

.tag-filter__chip.tag-css,
.project-card__media-tag.tag-css,
.modal__tag.tag-css {
  background: #209fb5;
  border-color: #209fb5;
  color: #ffffff;
}

.tag-filter__chip.tag-javascript,
.project-card__media-tag.tag-javascript,
.modal__tag.tag-javascript {
  background: #7287fd;
  border-color: #7287fd;
  color: #ffffff;
}

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

  html {
    scroll-behavior: auto;
  }

  .modal__dialog {
    animation: none;
  }
}