/* Compressor Toolbox — image compression milestone */
:root {
  --color-bg: #f6f8fb;
  --color-surface: #ffffff;
  --color-border: #e4e9f0;
  --color-text: #1a2233;
  --color-text-muted: #5b6b82;
  --color-primary: #2563eb;
  --color-primary-hover: #1d4fd8;
  --color-primary-soft: #eff4ff;
  --color-success: #16a34a;
  --color-success-soft: #eefaf1;
  --color-danger: #dc2626;
  --color-danger-soft: #fdeeee;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 2px rgba(16,24,40,.05);
  --shadow-md: 0 4px 12px rgba(16,24,40,.08);
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

body {
  font-family: var(--font);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.container { width: 100%; max-width: 880px; margin: 0 auto; padding: 0 20px; }
main.container { flex: 1; }

/* Navigation -- clean centered header, product-style */
.navbar { background: rgba(255,255,255,.92); backdrop-filter: blur(8px); border-bottom: 1px solid var(--color-border); position: sticky; top: 0; z-index: 10; }
.navbar__inner { display: flex; align-items: center; justify-content: center; min-height: 56px; gap: 8px; }
.navbar__links { display: flex; align-items: center; gap: 2px; overflow-x: auto; scrollbar-width: none; }
.navbar__links::-webkit-scrollbar { display: none; }
.navbar__link { display: inline-flex; align-items: center; gap: 6px; padding: 8px 14px; border-radius: 999px; text-decoration: none; font-size: 14px; font-weight: 500; color: var(--color-text-muted); white-space: nowrap; transition: color .15s ease, background-color .15s ease; }
.navbar__link:hover { color: var(--color-text); background: var(--color-bg); }
.navbar__link--active { color: var(--color-primary); background: var(--color-primary-soft); font-weight: 600; }
.badge--soon { font-size: 10px; font-weight: 600; text-transform: uppercase; letter-spacing: .04em; padding: 2px 6px; border-radius: 999px; background: var(--color-border); color: var(--color-text-muted); }

/* Hero */
.hero { text-align: center; padding: 48px 0 28px; }
.hero__title { font-size: clamp(26px, 5vw, 38px); font-weight: 800; letter-spacing: -.02em; margin: 0 0 12px; }
.hero__subtitle { font-size: clamp(15px, 2.2vw, 17px); color: var(--color-text-muted); max-width: 560px; margin: 0 auto 14px; }
.hero__formats { font-size: 14px; color: var(--color-text-muted); margin: 0; display: flex; flex-wrap: wrap; gap: 6px 16px; justify-content: center; align-items: center; }
.hero__privacy { color: var(--color-success); font-weight: 600; }


/* Controls */
.controls { margin-bottom: 28px; }
.controls__card { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); padding: 20px; display: flex; flex-wrap: wrap; align-items: flex-end; gap: 24px; }
.controls__group { min-width: 160px; }
.controls__group--quality { flex: 1 1 240px; }
.controls__group--actions { display: flex; gap: 10px; margin-left: auto; }
.controls__label-row { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 6px; }
.controls__label { font-size: 13px; font-weight: 600; }
.controls__value { font-size: 15px; font-weight: 700; color: var(--color-primary); font-variant-numeric: tabular-nums; }
.slider { width: 100%; accent-color: var(--color-primary); cursor: pointer; }
.slider__ticks { display: flex; justify-content: space-between; font-size: 11px; color: var(--color-text-muted); margin-top: 2px; }
.select { display: block; width: 100%; margin-top: 6px; padding: 10px 12px; font: inherit; font-size: 14px; border: 1px solid var(--color-border); border-radius: var(--radius-sm); background: var(--color-surface); cursor: pointer; }
.select:focus, .slider:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 1px; }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; font: inherit; font-size: 14px; font-weight: 600; padding: 10px 18px; border-radius: var(--radius-sm); border: 1px solid transparent; cursor: pointer; transition: background-color .15s ease; }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn--primary { background: var(--color-primary); color: #fff; }
.btn--primary:hover:not(:disabled) { background: var(--color-primary-hover); }
.btn--large { padding: 12px 26px; font-size: 15px; }
.btn--success { background: var(--color-success); color: #fff; }
.btn--success:hover:not(:disabled) { background: #12833b; }
.btn--ghost { background: transparent; border-color: var(--color-border); color: var(--color-text-muted); }
.btn--ghost:hover:not(:disabled) { background: var(--color-bg); color: var(--color-text); }

/* Dropzone */
.upload-section { margin-bottom: 28px; }
.dropzone { background: var(--color-surface); border: 2px dashed var(--color-border); border-radius: var(--radius-lg); padding: 48px 24px; text-align: center; cursor: pointer; transition: border-color .15s ease, background-color .15s ease, box-shadow .15s ease; box-shadow: var(--shadow-sm); }
.dropzone:hover, .dropzone:focus-visible { border-color: var(--color-primary); outline: none; }
.dropzone--dragover { border-color: var(--color-primary); background: var(--color-primary-soft); box-shadow: var(--shadow-md); }
.dropzone__icon { display: inline-flex; align-items: center; justify-content: center; width: 64px; height: 64px; border-radius: 50%; background: var(--color-primary-soft); color: var(--color-primary); margin-bottom: 14px; }
.dropzone__primary { font-size: 17px; font-weight: 600; margin: 0 0 4px; }
.dropzone__secondary { font-size: 14px; color: var(--color-text-muted); margin: 0 0 10px; }
.dropzone__browse { color: var(--color-primary); font-weight: 600; text-decoration: underline; }

/* File list */
.files { margin-bottom: 28px; }
.files__header { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-bottom: 14px; }
.files__heading { font-size: 18px; font-weight: 700; margin: 0; }
.file-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 12px; }
.file-card { display: flex; align-items: center; gap: 14px; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-md); box-shadow: var(--shadow-sm); padding: 12px 16px; }
.file-card--success { border-color: #bfe6cb; box-shadow: inset 3px 0 0 var(--color-success); }
.file-card--error { border-color: #f3c3c3; box-shadow: inset 3px 0 0 var(--color-danger); }
.file-card__thumb { width: 64px; height: 64px; border-radius: var(--radius-sm); border: 1px solid var(--color-border); object-fit: cover; background: var(--color-bg); flex-shrink: 0; }
.file-card__thumb--error { display: flex; align-items: center; justify-content: center; color: var(--color-danger); font-size: 11px; font-weight: 600; text-align: center; }
.file-card__main { flex: 1; min-width: 0; }
.file-card__name { font-size: 14px; font-weight: 600; margin: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.file-card__meta { font-size: 13px; color: var(--color-text-muted); margin: 2px 0 0; font-variant-numeric: tabular-nums; }
.file-card__savings { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 14px; margin-top: 8px; font-size: 13px; font-variant-numeric: tabular-nums; }
.file-card__saved-pct { display: inline-block; background: var(--color-success-soft); color: var(--color-success); font-weight: 700; padding: 3px 10px; border-radius: 999px; font-size: 13px; }
.file-card__status { flex-shrink: 0; display: inline-flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 600; padding: 4px 10px; border-radius: 999px; }
.file-card__status--pending { background: var(--color-bg); color: var(--color-text-muted); }
.file-card__status--compressing { background: var(--color-primary-soft); color: var(--color-primary); }
.file-card__status--done { background: var(--color-success-soft); color: var(--color-success); }
.file-card__status--error { background: var(--color-danger-soft); color: var(--color-danger); }
.spinner { width: 13px; height: 13px; border: 2px solid currentColor; border-right-color: transparent; border-radius: 50%; animation: spin .7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.file-card__actions { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.file-card__remove { display: inline-flex; align-items: center; justify-content: center; width: 32px; height: 32px; border: none; border-radius: var(--radius-sm); background: transparent; color: var(--color-text-muted); cursor: pointer; font: inherit; }
.file-card__remove:hover { background: var(--color-danger-soft); color: var(--color-danger); }

/* Empty state */
.empty-state { text-align: center; color: var(--color-text-muted); padding: 36px 0 48px; }
.empty-state__icon { display: inline-flex; align-items: center; justify-content: center; width: 60px; height: 60px; border-radius: 50%; background: var(--color-surface); border: 1px solid var(--color-border); margin-bottom: 12px; }

/* Steps */
.steps { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 10px; padding: 12px 0 56px; }
.step { display: inline-flex; align-items: center; gap: 8px; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: 999px; padding: 8px 16px; font-size: 13px; font-weight: 600; }
.step__number { display: inline-flex; align-items: center; justify-content: center; width: 22px; height: 22px; border-radius: 50%; background: var(--color-primary-soft); color: var(--color-primary); font-size: 12px; font-weight: 700; }
.step__arrow { color: var(--color-text-muted); font-size: 15px; }

/* Footer */
.footer { background: var(--color-surface); border-top: 1px solid var(--color-border); padding: 18px 0; font-size: 13px; color: var(--color-text-muted); }
.footer__inner { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; }

/* Mobile */
@media (max-width: 640px) {
  .hero { padding: 32px 0 20px; }
  .dropzone { padding: 32px 16px; }
  .navbar__inner { min-height: 48px; }
  .navbar__link { padding: 6px 10px; font-size: 13.5px; }
  .controls__card { flex-direction: column; align-items: stretch; }
  .controls__group--actions { margin-left: 0; flex-direction: column; }
  .btn--large { width: 100%; }
  .file-card { flex-wrap: wrap; padding: 12px; }
  .file-card__main { flex: 1 1 calc(100% - 78px); }
  .file-card__status { order: 4; }
  .file-card__actions { margin-left: auto; order: 5; }
  .step__arrow { display: none; }
  .steps { display: grid; grid-template-columns: 1fr 1fr; }
  .footer__inner { flex-direction: column; align-items: center; }
}

@media (max-width: 380px) {
  .steps { grid-template-columns: 1fr; }
}

.empty-state__text { font-size: 14px; margin: 0; }

.dropzone__formats { font-size: 12px; color: var(--color-text-muted); letter-spacing: .06em; text-transform: uppercase; margin: 0; }
.upload-error { margin: 12px 0 0; padding: 10px 14px; border-radius: var(--radius-md); background: var(--color-danger-soft); color: var(--color-danger); font-size: 14px; }

/* ---------- Milestone 2 additions ---------- */
.controls__row { display: flex; flex-wrap: wrap; gap: 24px; align-items: flex-end; }
.controls__row + .controls__row { margin-top: 18px; }
.controls__row--footer { align-items: center; justify-content: space-between; }
.controls__group--quality { flex: 1 1 240px; }

.checkbox { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 500; cursor: pointer; }
.checkbox input { width: 16px; height: 16px; accent-color: var(--color-primary); cursor: pointer; }
.checkbox__hint { color: var(--color-text-muted); font-weight: 400; }

.resize { border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: 10px 14px; width: 100%; background: var(--color-bg); }
.resize__summary { cursor: pointer; font-size: 13px; font-weight: 600; color: var(--color-text); user-select: none; }
.resize__body { padding-top: 12px; }
.resize__controls { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; }
.resize__presets { display: flex; gap: 6px; }
.resize__dims { display: flex; gap: 8px; align-items: flex-end; }
.resize__field { display: flex; flex-direction: column; gap: 4px; font-size: 12px; color: var(--color-text-muted); }
.resize__field input { width: 110px; padding: 8px 10px; font: inherit; font-size: 14px; border: 1px solid var(--color-border); border-radius: var(--radius-sm); }
.resize__field input:disabled { background: var(--color-bg); color: var(--color-text-muted); }

.chip { font: inherit; font-size: 12px; font-weight: 600; padding: 6px 12px; border-radius: 999px; border: 1px solid var(--color-border); background: var(--color-surface); color: var(--color-text-muted); cursor: pointer; }
.chip:hover { border-color: var(--color-primary); color: var(--color-primary); }
.chip--active { background: var(--color-primary); border-color: var(--color-primary); color: #fff; }

.files__progress { font-size: 13px; font-weight: 600; color: var(--color-primary); }

.file-card__status--warn { background: var(--color-warning-soft); color: var(--color-warning); }
.file-card__savings { flex-direction: column; align-items: flex-start; gap: 6px; }
.file-card__savings-row { display: flex; flex-wrap: wrap; gap: 6px 14px; align-items: baseline; }
.file-card__warn-note { color: var(--color-warning); font-weight: 600; font-size: 13px; }
.file-card__note { font-size: 12px; color: var(--color-text-muted); margin-top: 6px; }
.keep-original-btn { font: inherit; font-size: 12px; font-weight: 600; padding: 5px 10px; border-radius: var(--radius-sm); border: 1px solid var(--color-warning); background: var(--color-surface); color: var(--color-warning); cursor: pointer; }
.keep-original-btn:hover { background: var(--color-warning-soft); }

.preview-toggle { display: inline-flex; border: 1px solid var(--color-border); border-radius: 999px; overflow: hidden; margin-top: 8px; }
.preview-toggle button { font: inherit; font-size: 11px; font-weight: 600; padding: 3px 10px; border: none; background: var(--color-surface); color: var(--color-text-muted); cursor: pointer; }
.preview-toggle button.preview-toggle__active { background: var(--color-primary-soft); color: var(--color-primary); }

@media (max-width: 640px) {
  .controls__row { flex-direction: column; align-items: stretch; }
  .controls__row--footer { flex-direction: column-reverse; align-items: stretch; }
  .resize__dims { flex-wrap: wrap; }
}

/* ---------- Milestone 3: video tool ---------- */
.hero--tool { padding: 32px 0 20px; text-align: center; }
.hero__title--tool { font-size: clamp(22px, 4vw, 30px); }
.hero__guidance { font-size: 13px; color: var(--color-text-muted); margin: 8px 0 0; }
.dropzone__icon--video { background: #f3e8ff; color: #7c3aed; }

.ffmpeg-status { display: flex; align-items: center; gap: 10px; background: var(--color-primary-soft); color: var(--color-primary); border: 1px solid #c7d7fe; border-radius: var(--radius-md); padding: 12px 16px; margin-bottom: 20px; font-size: 14px; font-weight: 600; }

.vcard { flex-wrap: wrap; }
.vcard__media { width: 180px; flex-shrink: 0; }
.vcard__video { width: 100%; aspect-ratio: 16 / 9; object-fit: contain; background: #000; border-radius: var(--radius-sm); border: 1px solid var(--color-border); display: block; }
.vcard__noplay { width: 100%; aspect-ratio: 16 / 9; background: var(--color-bg); border: 1px dashed var(--color-border); border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; overflow: hidden; color: var(--color-text-muted); font-size: 11px; text-align: center; padding: 6px; }
.vcard__noplay img { width: 100%; height: 100%; object-fit: cover; }
.vcard__side { display: flex; flex-direction: column; align-items: flex-end; gap: 8px; flex-shrink: 0; }
.vcard__progress { width: 120px; height: 8px; border-radius: 999px; background: var(--color-border); overflow: hidden; }
.vcard__progress span { display: block; height: 100%; width: 0; background: var(--color-primary); border-radius: 999px; transition: width .2s ease; }
.vcard__percent { font-size: 12px; font-weight: 700; color: var(--color-primary); font-variant-numeric: tabular-nums; }

@media (max-width: 640px) {
  .vcard__media { width: 100%; }
  .vcard__side { flex-direction: row; align-items: center; width: 100%; order: 6; }
  .vcard__progress { flex: 1; }
}

/* ---------- Milestone 4: audio tool ---------- */
.dropzone__icon--audio { background: #fef3c7; color: #d97706; }
.acard__media { width: 260px; flex-shrink: 0; }
.acard__media audio { width: 100%; height: 40px; }
@media (max-width: 640px) {
  .acard__media { width: 100%; }
}

.ffmpeg-status[hidden] { display: none; }

/* ---------- Milestone 6: documents tool ---------- */
.dropzone__icon--doc { background: #e0f2fe; color: #0284c7; }

/* ---------- Milestone 7: archives tool ---------- */
.dropzone__icon--archive { background: #fce7f3; color: #db2777; }
.archive-card { margin-bottom: 20px; }
.archive-card__hint { font-size: 12px; color: var(--color-text-muted); margin-top: 12px; }
.field-label { display: flex; flex-direction: column; gap: 4px; font-size: 12px; color: var(--color-text-muted); }

/* ---------- Milestone 8: home dashboard, privacy, polish ---------- */
.hero--home { padding: 56px 0 32px; }
.hero__cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin: 20px 0 14px; }
.section-heading { font-size: 22px; font-weight: 700; letter-spacing: -.01em; margin: 40px 0 18px; }
.home-section__text { color: var(--color-text-muted); max-width: 640px; }
.tools-grid-section { margin-bottom: 8px; }
.tools-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 16px; }
.tool-card { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); padding: 22px; display: flex; flex-direction: column; gap: 8px; transition: box-shadow .15s ease, transform .15s ease; }
.tool-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.tool-card h3 { margin: 4px 0 0; font-size: 16px; }
.tool-card p { margin: 0; font-size: 13.5px; color: var(--color-text-muted); }
.tool-card__icon { width: 46px; height: 46px; border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center; }
.tool-card__icon--images { background: var(--color-primary-soft); color: var(--color-primary); }
.tool-card__icon--video { background: #f3e8ff; color: #7c3aed; }
.tool-card__icon--audio { background: #fef3c7; color: #d97706; }
.tool-card__icon--pdf { background: var(--color-danger-soft); color: var(--color-danger); }
.tool-card__icon--doc { background: #e0f2fe; color: #0284c7; }
.tool-card__icon--archive { background: #fce7f3; color: #db2777; }
.tool-card__formats { font-size: 11.5px !important; letter-spacing: .02em; }
.tool-card .btn { margin-top: auto; align-self: flex-start; }
.how-list { max-width: 640px; padding-left: 20px; color: var(--color-text); }
.how-list li { margin-bottom: 10px; }
.faq { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: 12px 16px; margin-bottom: 10px; max-width: 720px; }
.faq summary { cursor: pointer; font-weight: 600; font-size: 14px; }
.faq p { margin: 10px 0 0; font-size: 14px; color: var(--color-text-muted); }
.privacy-section { max-width: 720px; padding-bottom: 48px; }
.privacy-section h2 { margin-top: 28px; }
.privacy-section p { color: var(--color-text); }
.privacy-list { padding-left: 20px; }
.privacy-list li { margin-bottom: 8px; }
.footer__links a { color: var(--color-text-muted); }

/* Accessibility: visible focus for keyboard users */
a:focus-visible, button:focus-visible, select:focus-visible, input:focus-visible, [tabindex]:focus-visible, summary:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; border-radius: 4px; }

/* Global queue indicator in navbar */
.queue-pill { display: inline-flex; align-items: center; gap: 8px; background: var(--color-primary-soft); color: var(--color-primary); border-radius: 999px; padding: 4px 12px; font-size: 12.5px; font-weight: 600; white-space: nowrap; }
.queue-pill .spinner { width: 11px; height: 11px; }

@media (max-width: 640px) {
  .tools-grid { grid-template-columns: 1fr; }
  .hero--home { padding: 36px 0 24px; }
}

.lock-ico { width: 14px; height: 14px; vertical-align: -2px; color: var(--color-success); }

/* Access gate (private beta) */
.access-gate {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(241, 245, 249, 0.55);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.access-gate[hidden] { display: none; }
.access-gate__card {
  width: 100%;
  max-width: 400px;
  background: #fff;
  border: 1px solid var(--color-border, #e2e8f0);
  border-radius: 16px;
  box-shadow: 0 20px 50px rgba(15, 23, 42, 0.18);
  padding: 32px 28px;
  text-align: center;
}
.access-gate__lock { color: var(--color-primary, #2563eb); margin-bottom: 10px; }
.access-gate__title { font-size: 20px; margin: 0 0 8px; }
.access-gate__text { font-size: 14px; color: var(--color-muted, #64748b); margin: 0 0 20px; }
.access-gate__form { display: flex; gap: 8px; }
.access-gate__input {
  flex: 1;
  min-width: 0;
  padding: 10px 12px;
  font-size: 14px;
  border: 1px solid var(--color-border, #e2e8f0);
  border-radius: 8px;
  outline: none;
}
.access-gate__input:focus { border-color: var(--color-primary, #2563eb); box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15); }
.access-gate__error { font-size: 13px; color: var(--color-danger, #dc2626); margin: 12px 0 0; }
.access-gate--shake { animation: access-gate-shake 0.35s; }
@keyframes access-gate-shake {
  20% { transform: translateX(-6px); }
  40% { transform: translateX(6px); }
  60% { transform: translateX(-4px); }
  80% { transform: translateX(4px); }
}
@media (max-width: 480px) {
  .access-gate__form { flex-direction: column; }
}