/**
 * Base Styles
 * Resets, global element rules, and app-wide behaviors.
 */

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

/**
 * Theme Transitions
 * Unified crossfade for all color properties when switching light/dark theme.
 * All elements transition together using --duration-theme from config.
 */
*,
*::before,
*::after {
  transition:
    color var(--duration-theme) ease-out,
    background-color var(--duration-theme) ease-out,
    border-color var(--duration-theme) ease-out,
    fill var(--duration-theme) ease-out,
    stroke var(--duration-theme) ease-out,
    box-shadow var(--duration-theme) ease-out;
}

/* Reduced motion: instant theme switching */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition: none;
  }
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-color: var(--surface-primary);
}

/* ========== CURSOR SYSTEM (Desktop Only) ========== */

/* Custom circular cursor - frosted glass with dual border */
.custom-cursor {
  position: fixed;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(128, 128, 128, 0.12);
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
  border: 1px solid rgba(0, 0, 0, 0.2);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.35);
  pointer-events: none;
  z-index: 99999;
  transform: translate(-50%, -50%);
  opacity: 0;
  transition: opacity 0.2s ease-out, transform 0.15s ease-out, background 0.15s ease-out, border-color 0.15s ease-out, box-shadow 0.15s ease-out;
}

.custom-cursor.active { opacity: 1; }
.custom-cursor.hovering {
  transform: translate(-50%, -50%) scale(0.7);
  background: rgba(128, 128, 128, 0.25);
  border-color: rgba(0, 0, 0, 0.35);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.5);
}

[data-theme="dark"] .custom-cursor.hovering {
  background: rgba(128, 128, 128, 0.3);
  border-color: rgba(255, 255, 255, 0.4);
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.4);
}

/* Cursor tooltip - base */
.cursor-tooltip {
  position: fixed;
  display: flex;
  pointer-events: none;
  z-index: 99998;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.15s, transform 0.15s;
  white-space: nowrap;
}

.cursor-tooltip.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Tooltip variant: info (carousel project info) */
.cursor-tooltip--info {
  flex-direction: column;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: var(--glass-bg-light);
  backdrop-filter: var(--glass-blur) var(--glass-saturate);
  -webkit-backdrop-filter: var(--glass-blur) var(--glass-saturate);
  border: 1px solid var(--glass-border-light);
  border-radius: var(--radius-md);
}

.cursor-tooltip__year { color: var(--text-primary); }
.cursor-tooltip__divider {
  height: 1px;
  background: rgba(0, 0, 0, 0.1);
}
.cursor-tooltip__info { color: var(--color-base-black); }

/* Tooltip variant: ui (action hints like "CLOSE PROJECT") */
.cursor-tooltip--ui {
  flex-direction: row;
  align-items: center;
  gap: var(--spacing-xs);
  color: var(--text-primary);
}

.cursor-tooltip--ui .cursor-tooltip__icon {
  font-size: 12px;
  line-height: 1;
  order: 1;
}

.cursor-tooltip--ui .cursor-tooltip__message {
  color: inherit;
}

/* Dark theme */
[data-theme="dark"] .custom-cursor {
  background: rgba(128, 128, 128, 0.15);
  border-color: rgba(255, 255, 255, 0.25);
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .cursor-tooltip--info {
  background-color: var(--glass-bg-dark);
  border-color: var(--glass-border-dark);
}

[data-theme="dark"] .cursor-tooltip__divider {
  background: rgba(255, 255, 255, 0.1);
}

/* Hide default cursor when custom cursor is active */
.has-custom-cursor,
.has-custom-cursor * {
  cursor: none !important;
}

.has-custom-cursor input,
.has-custom-cursor textarea,
.has-custom-cursor select {
  cursor: text !important;
}

/* Disable on touch/mobile */
@media (hover: none), (max-width: 1080px) {
  .custom-cursor,
  .cursor-tooltip {
    display: none !important;
  }

  .has-custom-cursor,
  .has-custom-cursor * {
    cursor: auto !important;
  }
}

body {
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  line-height: var(--line-height-paragraph);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  overflow-y: hidden;
  overscroll-behavior-x: none; /* Prevent browser back/forward navigation gestures */
}

body.project-mode {
  overflow-y: auto;
  overflow-x: hidden;
  overscroll-behavior-x: none; /* Prevent browser back/forward navigation gestures */
}

body:not(.project-mode)::-webkit-scrollbar {
  width: 0;
}

body:not(.project-mode) {
  -ms-overflow-style: none;
  scrollbar-width: none;
}

body.project-mode::-webkit-scrollbar {
  width: 8px;
}

body.project-mode::-webkit-scrollbar-thumb {
  background: rgba(0, 0, 0, 0.4);
}

body.project-mode {
  scrollbar-width: thin;
}

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
}

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
}

a {
  color: inherit;
  text-decoration: none;
}

:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 2px;
}

/* Prevent black focus outlines on clickable media wrappers (e.g. carousel devices) */
a:focus-visible:has(:is(img, picture, video, canvas, svg, .media-shell, [data-media-wrapper])),
button:focus-visible:has(:is(img, picture, video, canvas, svg, .media-shell, [data-media-wrapper])) {
  outline: none;
  outline-offset: 0;
}