/*
 * Shared light/dark theme
 * The page-specific styles keep ownership of layout; this layer only supplies
 * color tokens, dark-surface fixes, and the fixed theme control.
 */
:root {
  color-scheme: light;
  --theme-bg: #fafafa;
  --theme-bg-elevated: #ffffff;
  --theme-bg-subtle: #f0f0f0;
  --theme-text: #1a1a1a;
  --theme-text-muted: #5c5c5c;
  --theme-border: #e8e8e8;
  --theme-accent: #0052cc;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --theme-bg: #101114;
  --theme-bg-elevated: #191b20;
  --theme-bg-subtle: #23262d;
  --theme-text: #f4f5f7;
  --theme-text-muted: #aeb4bf;
  --theme-border: #30343c;
  --theme-accent: #82b4ff;

  /* Tokens used throughout the current portfolio pages. */
  --color-bg: var(--theme-bg);
  --color-bg-alt: var(--theme-bg-subtle);
  --color-text: var(--theme-text);
  --color-text-muted: var(--theme-text-muted);
  --color-border: var(--theme-border);
  --color-accent: var(--theme-accent);
}

html,
body {
  background-color: var(--theme-bg);
}

:root[data-theme="dark"] body {
  color: var(--theme-text);
}

:root[data-theme="dark"] .work-header {
  background: rgb(16 17 20 / 88%);
}

:root[data-theme="dark"] .work-header.scrolled {
  box-shadow: 0 1px 0 rgb(255 255 255 / 4%);
}

:root[data-theme="dark"] .work-header .logo-img {
  filter: invert(1) hue-rotate(180deg);
}

:root[data-theme="dark"] .hero-brand-pill,
:root[data-theme="dark"] .experience-brand-pill,
:root[data-theme="dark"] .musings-card,
:root[data-theme="dark"] .project-modal,
:root[data-theme="dark"] .project-modal-content {
  background-color: var(--theme-bg-elevated);
  border-color: var(--theme-border);
}

:root[data-theme="dark"] .tool-stack-tooltip {
  color: var(--theme-text);
  background: #292d35;
  border: 1px solid rgb(255 255 255 / 10%);
  box-shadow: 0 12px 34px rgb(0 0 0 / 42%);
}

:root[data-theme="dark"] .tool-stack-tooltip::after {
  border-top-color: #292d35;
}

/* Project tiles retain their individual hues, shifted onto dark surfaces. */
:root[data-theme="dark"] .project-tile {
  border: 1px solid rgb(255 255 255 / 7%);
  box-shadow: inset 0 1px 0 rgb(255 255 255 / 3%);
}

:root[data-theme="dark"] .project-tile--ai {
  background-color: #29263a;
}

:root[data-theme="dark"] .project-tile--session {
  background-color: #202a35;
}

:root[data-theme="dark"] .project-tile--journeys {
  background-color: #1f2e2a;
}

:root[data-theme="dark"] .experience-projects-row .project-tile--chorus-ios {
  background-color: #25282e;
}

:root[data-theme="dark"] .experience-projects-row .project-tile--chorus-hp {
  background-color: #2d2925;
}

:root[data-theme="dark"] .experience-projects-row .project-tile--quickpolls {
  background-color: #202b33;
}

:root[data-theme="dark"] .experience-projects-row .project-tile--mobile {
  background-color: #2c2925;
}

:root[data-theme="dark"] .experience-projects-row .project-tile--agrity {
  background-color: #302923;
}

:root[data-theme="dark"] .project-tile .project-label {
  color: #aeb6c2;
}

:root[data-theme="dark"] .project-tile .project-desc {
  color: #f2f4f7;
}

:root[data-theme="dark"] .project-tile-visual img {
  filter: drop-shadow(0 16px 40px rgb(0 0 0 / 34%));
}

/* Keep every modal close action legible against dark panels and imagery. */
:root[data-theme="dark"] .project-modal-close,
:root[data-theme="dark"] .musings-lightbox-close,
:root[data-theme="dark"] .photo-lightbox-close {
  color: #f4f5f7;
  background: rgb(41 45 53 / 94%);
  border: 1px solid rgb(255 255 255 / 14%);
  box-shadow: 0 4px 16px rgb(0 0 0 / 38%);
  opacity: 1;
  backdrop-filter: blur(10px);
}

:root[data-theme="dark"] .project-modal-close:hover,
:root[data-theme="dark"] .musings-lightbox-close:hover,
:root[data-theme="dark"] .photo-lightbox-close:hover {
  background: #3a3f49;
  border-color: rgb(255 255 255 / 24%);
}

:root[data-theme="dark"] .project-modal-close svg,
:root[data-theme="dark"] .musings-lightbox-close svg {
  stroke: #f4f5f7;
  stroke-width: 2.25;
}

:root[data-theme="dark"] .photo-lightbox-close {
  display: grid;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0;
  place-items: center;
  border-radius: 50%;
  line-height: 1;
}

:root[data-theme="dark"] .project-modal-close:focus-visible,
:root[data-theme="dark"] .musings-lightbox-close:focus-visible,
:root[data-theme="dark"] .photo-lightbox-close:focus-visible {
  outline: 3px solid var(--theme-accent);
  outline-offset: 3px;
}

/* Tool icons sit on a true dark-mode square instead of a white tile. */
:root[data-theme="dark"] .tool-stack-logo {
  background: #202329;
  border-color: rgb(255 255 255 / 9%);
  box-shadow:
    0 1px 2px rgb(0 0 0 / 24%),
    0 8px 24px rgb(0 0 0 / 24%),
    inset 0 1px 0 rgb(255 255 255 / 4%);
}

:root[data-theme="dark"] .tool-stack-tool:hover .tool-stack-logo,
:root[data-theme="dark"] .tool-stack-tool:focus-visible .tool-stack-logo {
  background: #292d35;
  border-color: rgb(255 255 255 / 17%);
  box-shadow:
    0 2px 4px rgb(0 0 0 / 28%),
    0 14px 30px rgb(0 0 0 / 38%),
    inset 0 1px 0 rgb(255 255 255 / 6%);
}

:root[data-theme="dark"] .philosophy-card,
:root[data-theme="dark"] .project-gate-card,
:root[data-theme="dark"] input,
:root[data-theme="dark"] textarea,
:root[data-theme="dark"] select {
  background-color: var(--theme-bg-elevated);
  color: var(--theme-text);
  border-color: var(--theme-border);
}

:root[data-theme="dark"] .project-case-study strong,
:root[data-theme="dark"] .project-page strong,
:root[data-theme="dark"] .about-content strong {
  color: var(--theme-text);
}

:root[data-theme="dark"] .cast-shadow,
:root[data-theme="dark"] .project-video,
:root[data-theme="dark"] .project-case-study video {
  box-shadow: 0 10px 36px rgb(0 0 0 / 38%);
}

/* Sensible fallback for older and utility pages that predate the shared tokens. */
:root[data-theme="dark"] body:not(.work-page) {
  background: var(--theme-bg) !important;
  color: var(--theme-text);
}

:root[data-theme="dark"] body:not(.work-page) main,
:root[data-theme="dark"] body:not(.work-page) section,
:root[data-theme="dark"] body:not(.work-page) header,
:root[data-theme="dark"] body:not(.work-page) footer {
  border-color: var(--theme-border);
}

.theme-toggle {
  position: fixed;
  left: max(1rem, env(safe-area-inset-left));
  bottom: max(1rem, env(safe-area-inset-bottom));
  z-index: 2147483647;
  display: grid;
  place-items: center;
  width: 3rem;
  height: 3rem;
  padding: 0;
  color: #20232a;
  background: rgb(255 255 255 / 90%);
  border: 1px solid rgb(26 35 48 / 14%);
  border-radius: 50%;
  box-shadow: 0 6px 24px rgb(17 24 39 / 16%);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  backdrop-filter: blur(12px);
  transition:
    color 180ms ease,
    background-color 180ms ease,
    border-color 180ms ease,
    box-shadow 180ms ease,
    transform 180ms cubic-bezier(0.22, 1, 0.36, 1);
}

.theme-toggle:hover {
  transform: translateY(-2px) rotate(-8deg);
  box-shadow: 0 9px 30px rgb(17 24 39 / 22%);
}

.theme-toggle:active {
  transform: scale(0.94);
}

.theme-toggle:focus-visible {
  outline: 3px solid var(--theme-accent);
  outline-offset: 3px;
}

.theme-toggle svg {
  width: 1.25rem;
  height: 1.25rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
  pointer-events: none;
}

:root[data-theme="dark"] .theme-toggle {
  color: #f8d66d;
  background: rgb(35 38 45 / 92%);
  border-color: rgb(255 255 255 / 14%);
  box-shadow: 0 6px 24px rgb(0 0 0 / 38%);
}

.theme-transition-circle {
  position: fixed;
  left: 0;
  top: 0;
  z-index: 2147483646;
  width: 24px;
  height: 24px;
  margin: -12px 0 0 -12px;
  border-radius: 50%;
  pointer-events: none;
  will-change: transform, opacity;
}

@media (prefers-reduced-motion: reduce) {
  .theme-toggle {
    transition: none;
  }
}

@media (max-width: 640px) {
  .theme-toggle {
    width: 2.75rem;
    height: 2.75rem;
  }
}