/* ============================================================
   Omixa motion layer. Loaded after app.css and site.css.

   Principles
   - Motion gives feedback or explains a change; it is never required to read or use the page.
   - Only opacity and transform are animated (plus colour/shadow on hover). No width/height/top/left.
   - Entrances ease out, exits ease in. Hover/press 150-250ms, entrances 250-600ms.
   - Keyframes only exist inside (prefers-reduced-motion: no-preference). With reduced motion every
     element is simply in its final state, and the few functional spinners keep a slow rotation.
   - Entrance animations use fill-mode "backwards" (never "forwards") so they can't freeze an
     element's transform and fight its own hover state afterwards.
   - Colours: tokens or the logo-derived rgba() triples only (see tests/test_brand_consistency.py).
   Behaviour (reveals, count-up, toasts, dialog) lives in static/js/motion.js.
   ============================================================ */

:root {
  --dur-fast: 180ms;
  --dur-base: 260ms;
  --dur-enter: 340ms;
  --dur-reveal: 520ms;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in: cubic-bezier(0.4, 0, 1, 1);
  --focus-outline: 3px solid var(--omixa-violet);
}

/* ---------- Keyboard focus: one consistent, visible indicator ---------- */
:where(a, button, summary, [role="button"], [role="tab"], .btn, .btn-main, .btn-upload, .sample, .tab, .link-btn, .hamburger):focus-visible {
  outline: var(--focus-outline);
  outline-offset: 3px;
}
.quality :focus-visible, .site-footer :focus-visible { outline-color: var(--white); }
.btn-main:focus-visible, .btn-upload:focus-visible { outline-offset: 4px; }

/* ---------- Buttons: restrained hover, clear pressed state ---------- */
.btn {
  transition: background-color var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease),
    color var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease),
    transform var(--dur-fast) var(--ease), opacity var(--dur-fast) var(--ease);
}
.btn:active:not(:disabled), .btn-main:active:not(:disabled), .btn-upload:active, .nav-cta:active,
.sample:active, .tab:active, .btn-ghost:active, .link-btn:active { transform: scale(0.97); }
.btn-primary:active:not(:disabled) { transform: translateY(0) scale(0.98); }
.btn-main, .btn-upload { transition: transform var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease), opacity var(--dur-fast) var(--ease), filter var(--dur-fast) var(--ease); }
.btn-ghost, .link-btn, .topnav-links a, .tab {
  transition: background-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease),
    border-color var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease);
}
/* Disabled reads as disabled: dimmed, desaturated, no hover lift */
.btn:disabled, .btn-main:disabled { filter: saturate(0.5); cursor: not-allowed; }

/* Touch screens have no hover: don't leave controls "stuck" lifted after a tap */
@media (hover: none) {
  .btn-primary:hover, .btn-upload:hover, .btn-main:hover:not(:disabled), .sample:hover,
  .tool-card .dropzone:hover .btn-upload { transform: none; box-shadow: none; }
}

/* Loading state: set aria-busy="true" on a button while its request is in flight.
   The label stays put; a small spinner takes its place on the right. */
.btn[aria-busy="true"], .btn-main[aria-busy="true"] { pointer-events: none; position: relative; }
.btn-main[aria-busy="true"]:disabled { opacity: 0.85; filter: none; }
.btn[aria-busy="true"]::after, .btn-main[aria-busy="true"]::after {
  content: ""; width: 1em; height: 1em; flex: none; border-radius: 50%;
  border: 2px solid currentColor; border-right-color: transparent;
  animation: spin 0.7s linear infinite;
}

/* ---------- Cards: only the ones that read as "cards" ---------- */
.trust-item, .price-card, .step3, .stat-card, .faq-item, .feature-card {
  transition: transform var(--dur-base) var(--ease-out), box-shadow var(--dur-base) var(--ease-out), border-color var(--dur-base) var(--ease);
}
.step3-art svg, .sample svg { transition: transform var(--dur-base) var(--ease-out); }
@media (hover: hover) {
  .trust-item:hover, .price-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: var(--omixa-violet-light); }
  .stat-card:hover { border-color: var(--omixa-violet-light); box-shadow: var(--shadow-sm); }
  .step3:hover .step3-art svg { transform: translateY(-3px) scale(1.05); }
  .sample:hover svg { transform: translateY(-1px) scale(1.08); }
  .faq-item:hover { box-shadow: var(--shadow-md); }
}

/* ---------- Navigation ---------- */
.topnav { transition: box-shadow var(--dur-base) var(--ease); }
.topnav.is-scrolled { box-shadow: var(--shadow-sm); }
.topnav-links a:not(.nav-cta) { position: relative; }
.topnav-links a:not(.nav-cta)::after {
  content: ""; position: absolute; left: 14px; right: 14px; bottom: 3px; height: 2px; border-radius: 2px;
  background: var(--omixa-violet); transform: scaleX(0); transform-origin: left center;
  transition: transform var(--dur-base) var(--ease-out);
}
.topnav-links a:not(.nav-cta):hover::after, .topnav-links a[aria-current]:not(.nav-cta)::after { transform: scaleX(1); }
.topnav-links a[aria-current]:not(.nav-cta) { color: var(--omixa-indigo); }

/* ---------- Disclosure blocks (FAQ + "advanced" folds) ---------- */
details > summary { transition: background-color var(--dur-fast) var(--ease); }
@media (hover: hover) { .fold > summary:hover { background: var(--gray-50); } }
@supports (selector(::details-content)) and (interpolate-size: allow-keywords) {
  :root { interpolate-size: allow-keywords; }
  details::details-content {
    block-size: 0; overflow: hidden;
    transition: block-size var(--dur-enter) var(--ease-out), content-visibility var(--dur-enter) allow-discrete;
  }
  details[open]::details-content { block-size: auto; }
}

/* ---------- Tabs (landing "Professional quality") ---------- */
.tab.active { box-shadow: 0 4px 14px rgba(14, 5, 36, 0.28); }
.tab { transition: background-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease), box-shadow var(--dur-base) var(--ease), transform var(--dur-fast) var(--ease); }

/* Example caption under the before/after demo (it is illustration, never a real run) */
.ba-note { margin: 14px auto 0; max-width: 460px; font-size: 0.85rem; color: rgba(255, 255, 255, 0.72); }
.ba-tag { margin-left: 8px; font-size: 0.68rem; font-weight: 700; letter-spacing: 0.04em; text-transform: uppercase; color: var(--gray-300); }
.ba-after li.same { background: var(--white); }
.ba-after li.changed { background: var(--success-bg); }

/* ---------- Inputs: focus + validity feedback ---------- */
input, textarea, select { transition: border-color var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease), background-color var(--dur-fast) var(--ease); }

/* ---------- Upload zone states ---------- */
.tool-card .dropzone { transition: background-color var(--dur-base) var(--ease), border-color var(--dur-base) var(--ease), transform var(--dur-base) var(--ease-out); }
.tool-card .dropzone.drag { transform: scale(1.01); }
.tool-card .dropzone.drag .btn-upload { transform: translateY(-2px) scale(1.03); box-shadow: 0 10px 24px rgba(165, 84, 247, 0.35); }
.step .dot { transition: background-color var(--dur-base) var(--ease), color var(--dur-base) var(--ease), transform var(--dur-base) var(--ease-out); }
.step.active .dot { transform: scale(1.12); }

/* ---------- Toasts (Omixa.toast in motion.js) ---------- */
.toast-region { position: fixed; z-index: 90; top: calc(76px + env(safe-area-inset-top, 0px)); right: 16px; width: min(380px, calc(100vw - 32px));
  display: flex; flex-direction: column; gap: 10px; pointer-events: none; }
.toast { pointer-events: auto; display: flex; align-items: flex-start; gap: 10px; padding: 12px 14px; border-radius: var(--radius-md);
  background: var(--white); border: 1px solid var(--border); border-left-width: 4px; box-shadow: var(--shadow-lg);
  font-size: 0.9rem; color: var(--text-primary); }
.toast-success { border-left-color: var(--success); }
.toast-error { border-left-color: var(--danger); }
.toast-info { border-left-color: var(--omixa-glow); }
.toast-msg { flex: 1; min-width: 0; overflow-wrap: anywhere; }
.toast-close { flex: none; width: 32px; height: 32px; margin: -6px -8px -6px 0; border: 0; border-radius: var(--radius-sm); background: none; cursor: pointer; font-size: 1.2rem; line-height: 1; color: var(--gray-300); }
.toast-close:hover { background: var(--gray-100); color: var(--text-primary); }
@media (max-width: 640px) { .toast-region { right: 16px; left: 16px; width: auto; } }

/* ---------- Confirm dialog (Omixa.confirm in motion.js, built on <dialog>) ---------- */
.m-dialog { border: 0; padding: 0; border-radius: var(--radius-lg); background: var(--white); color: var(--text-primary);
  box-shadow: var(--shadow-lg); width: min(420px, calc(100vw - 32px)); max-height: calc(100dvh - 32px); }
.m-dialog::backdrop { background: rgba(14, 5, 36, 0.5); }
.m-dialog-body { padding: 24px 24px 8px; }
.m-dialog-body h2 { font-size: 1.15rem; margin: 0 0 8px; }
.m-dialog-body p { margin: 0; }
.m-dialog-actions { display: flex; justify-content: flex-end; gap: 10px; padding: 16px 24px 24px; flex-wrap: wrap; }
.m-dialog .btn-danger-solid { background: var(--danger); color: var(--white); }
.m-dialog .btn-danger-solid:hover { background: var(--danger-ink); }

/* ---------- Quality control panel: exit state (the entrance is below) ---------- */
.qc-panel { transform-origin: bottom right; }

/* ---------- Print: never hide content ---------- */
@media print { html.motion [data-reveal] { opacity: 1 !important; transform: none !important; } }

/* ============================================================
   Everything below moves. It is skipped entirely under reduced motion.
   ============================================================ */
@media (prefers-reduced-motion: no-preference) {
  @keyframes m-rise { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
  @keyframes m-fade { from { opacity: 0; } to { opacity: 1; } }
  @keyframes m-drop { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: none; } }
  @keyframes m-scale-in { from { opacity: 0; transform: scale(0.96); } to { opacity: 1; transform: none; } }
  @keyframes m-pop { 0% { opacity: 0; transform: scale(0.6); } 70% { opacity: 1; transform: scale(1.08); } 100% { transform: none; } }
  @keyframes m-slide-in { from { opacity: 0; transform: translateX(-10px); } to { opacity: 1; transform: none; } }
  @keyframes m-slide-in-right { from { opacity: 0; transform: translateX(24px); } to { opacity: 1; transform: none; } }
  @keyframes m-toast-out { to { opacity: 0; transform: translateX(24px); } }
  @keyframes m-panel-in { from { opacity: 0; transform: translateY(10px) scale(0.97); } to { opacity: 1; transform: none; } }
  @keyframes m-panel-out { to { opacity: 0; transform: translateY(10px) scale(0.97); } }
  @keyframes m-dialog-out { to { opacity: 0; transform: scale(0.96); } }
  @keyframes m-backdrop-out { to { opacity: 0; } }
  @keyframes m-draw { from { stroke-dashoffset: 1; } to { stroke-dashoffset: 0; } }
  @keyframes m-highlight { 0% { background-color: var(--omixa-violet-light); } 100% { background-color: var(--success-bg); } }
  @keyframes m-fade-out { to { opacity: 0; } }

  /* Stagger index for the children of common grids (cap at 6 so nothing waits long) */
  :is(.stat-grid, .pricing-grid, .work-card .stats, .samples-row, .main-actions) > :nth-child(2) { --i: 1; }
  :is(.stat-grid, .pricing-grid, .work-card .stats, .samples-row, .main-actions) > :nth-child(3) { --i: 2; }
  :is(.stat-grid, .pricing-grid, .work-card .stats, .samples-row, .main-actions) > :nth-child(4) { --i: 3; }
  :is(.stat-grid, .pricing-grid, .work-card .stats, .samples-row, .main-actions) > :nth-child(5) { --i: 4; }
  :is(.stat-grid, .pricing-grid, .work-card .stats, .samples-row, .main-actions) > :nth-child(n + 6) { --i: 5; }

  /* ---- Page entrance (landing hero) ---- */
  .hero-copy h1 { animation: m-rise 560ms var(--ease-out) backwards; }
  .hero-copy .lead { animation: m-rise 560ms var(--ease-out) 90ms backwards; }
  .tool-card { animation: m-rise 600ms var(--ease-out) 170ms backwards; }
  .upload-card .btn-upload { animation: m-scale-in 420ms var(--ease-out) 320ms backwards; }
  .samples-row > .sample { animation: m-rise 420ms var(--ease-out) calc(420ms + var(--i, 0) * 70ms) backwards; }

  /* ---- Page entrance (every other page) ---- */
  .app-main > .container, .app-main > .container-narrow { animation: m-fade 380ms var(--ease-out) backwards; }
  .auth-card { animation: m-scale-in 420ms var(--ease-out) backwards; }
  .dash-header { animation: m-rise 420ms var(--ease-out) backwards; }
  .stat-grid > *, .pricing-grid > * { animation: m-rise 460ms var(--ease-out) calc(80ms + var(--i, 0) * 70ms) backwards; }
  .card > table tbody tr { animation: m-fade 320ms var(--ease-out) backwards; }

  /* ---- Workspace: sections appear when clean.js un-hides them ---- */
  .work-card:not(.hidden) { animation: m-rise 420ms var(--ease-out) backwards; }
  #reportCard:not(.hidden), #results:not(.hidden), #recommendationsCard:not(.hidden), #proPanel:not(.hidden),
  #validationGroup:not(.hidden) { animation: m-rise 400ms var(--ease-out) backwards; }
  .file-row { animation: m-slide-in 380ms var(--ease-out) 60ms backwards; }
  .file-icon { animation: m-pop 420ms var(--ease-out) 160ms backwards; }
  .work-card .stage.error, .alert:not(.hidden) { animation: m-drop 300ms var(--ease-out) backwards; }
  .finding, .rec-item { animation: m-fade 320ms var(--ease-out) backwards; }

  /* Results: check draws itself, the receipt rows arrive one after another */
  .done-check { animation: m-pop 460ms var(--ease-out) backwards; }
  .done-check svg path { stroke-dasharray: 1; stroke-dashoffset: 0; animation: m-draw 480ms var(--ease-out) 220ms backwards; }
  .work-card .stats > * { animation: m-rise 380ms var(--ease-out) calc(120ms + var(--i, 0) * 60ms) backwards; }
  #results .main-actions > * { animation: m-rise 380ms var(--ease-out) calc(60ms + var(--i, 0) * 80ms) backwards; }
  .score-badge { animation: m-pop 460ms var(--ease-out) 80ms backwards; }

  /* Step tracker: the dot that just became active/done pops once */
  .step.active .dot, .step.done .dot { animation: m-pop 360ms var(--ease-out) backwards; }

  /* Disclosure content fades in as the block opens (also covers browsers without ::details-content) */
  details[open] > :not(summary) { animation: m-fade 280ms var(--ease-out) backwards; }

  /* ---- Before/after demonstration (landing). JS adds .is-animating; values are labelled example data ---- */
  .ba-card.is-animating .ba-before li { animation: m-rise 340ms var(--ease-out) calc(var(--i, 0) * 70ms) backwards; }
  .ba-card.is-animating .ba-after li { animation: m-slide-in 380ms var(--ease-out) calc(420ms + var(--i, 0) * 110ms) backwards; }
  .ba-card.is-animating .ba-after li.changed { animation: m-slide-in 380ms var(--ease-out) calc(420ms + var(--i, 0) * 110ms) backwards,
    m-highlight 900ms var(--ease) calc(420ms + var(--i, 0) * 110ms) backwards; }

  /* ---- Reveal on scroll (motion.js sets html.motion and the [data-reveal] attributes) ---- */
  html.motion [data-reveal] { transition: opacity var(--dur-reveal) var(--ease-out), transform var(--dur-reveal) var(--ease-out); transition-delay: var(--d, 0ms); }
  html.motion [data-reveal]:not(.in) { opacity: 0; transform: translateY(18px); }

  /* ---- Mobile navigation: slides down, slides back up ---- */
  @media (max-width: 860px) {
    .topnav-links { transform: translateY(-10px); transition: opacity var(--dur-fast) var(--ease-in), transform var(--dur-fast) var(--ease-in), visibility 0s linear var(--dur-fast); }
    .topnav-links.open { transform: none; transition: opacity var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out), visibility 0s; }
    .topnav-links.open a { animation: m-rise 320ms var(--ease-out) backwards; }
    .topnav-links.open a:nth-child(2) { animation-delay: 30ms; }
    .topnav-links.open a:nth-child(3) { animation-delay: 60ms; }
    .topnav-links.open a:nth-child(4) { animation-delay: 90ms; }
    .topnav-links.open a:nth-child(5) { animation-delay: 120ms; }
    .topnav-links.open a:nth-child(6) { animation-delay: 150ms; }
  }

  /* ---- Quality control center ---- */
  .qc-fab:not(.hidden) { animation: m-pop 420ms var(--ease-out) backwards; }
  .qc-panel:not(.hidden) { animation: m-panel-in var(--dur-enter) var(--ease-out) backwards; }
  .qc-panel.closing { animation: m-panel-out 200ms var(--ease-in) forwards; }
  .qc-action { animation: m-fade 300ms var(--ease-out) backwards; }

  /* ---- Toasts + dialog ---- */
  .toast { animation: m-slide-in-right var(--dur-enter) var(--ease-out) backwards; }
  .toast.leaving { animation: m-toast-out 220ms var(--ease-in) forwards; }
  @media (max-width: 640px) {
    @keyframes m-toast-in-top { from { opacity: 0; transform: translateY(-12px); } to { opacity: 1; transform: none; } }
    @keyframes m-toast-out-top { to { opacity: 0; transform: translateY(-12px); } }
    .toast { animation-name: m-toast-in-top; }
    .toast.leaving { animation-name: m-toast-out-top; }
  }
  .m-dialog[open] { animation: m-scale-in var(--dur-enter) var(--ease-out) backwards; }
  .m-dialog[open]::backdrop { animation: m-fade var(--dur-enter) var(--ease-out) backwards; }
  .m-dialog.closing { animation: m-dialog-out 180ms var(--ease-in) forwards; }
  .m-dialog.closing::backdrop { animation: m-backdrop-out 180ms var(--ease-in) forwards; }

  /* ---- Cross-document page transitions (Chrome/Edge; ignored elsewhere). Short, header stays put. ---- */
  @view-transition { navigation: auto; }
  .topnav { view-transition-name: topnav; }
  ::view-transition-old(root) { animation: m-fade-out 120ms var(--ease-in) both; }
  ::view-transition-new(root) { animation: m-fade 220ms var(--ease-out) both; }
}

/* ============================================================
   Reduced motion: no movement. Content is already visible (no [data-reveal] hiding, no keyframes).
   Spinners are the one thing kept: an indeterminate "working" signal is information, so it
   turns slowly instead of freezing (site.css would otherwise freeze it after one frame).
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  .spinner, .work-card .stage.active::before, .btn[aria-busy="true"]::after, .btn-main[aria-busy="true"]::after {
    animation-name: spin !important; animation-duration: 1.6s !important; animation-iteration-count: infinite !important;
  }
  .topnav-links.open a, .topnav-links a::after { transition-duration: 0.01ms !important; }
  .toast.leaving, .qc-panel.closing, .m-dialog.closing { opacity: 0; }
}