/* =========================================================================
   A4Share.PRO — Stylesheet
   Theme: "Zenith Minimalist" — soft purple, high-utility minimalism
   Font: Inter throughout
   ========================================================================= */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
  --color-primary: #6759ED;
  --color-primary-dark: #4D43B2;
  --color-primary-light: #F0EEFD;
  --color-primary-xlight: #E1DEFB;
  --color-accent: #4D43B2;

  --color-bg: #F5F6FA;
  --color-sidebar: #F0F1F6;
  --color-card: #FFFFFF;
  --color-border: #E2E8F0;

  --color-text: #1C1A24;
  --color-text-soft: #484555;
  --color-text-faint: #83808F;

  --color-success: #16A34A;
  --color-danger: #BA1A1A;
  --color-warning: #B45309;

  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --radius-pill: 999px;

  --shadow-sm: 0 2px 4px rgba(28, 26, 36, 0.03), 0 1px 2px rgba(28, 26, 36, 0.04);
  --shadow-md: 0 8px 20px rgba(28, 26, 36, 0.06);
  --shadow-lg: 0 20px 25px -5px rgba(28, 26, 36, 0.08), 0 10px 10px -5px rgba(28, 26, 36, 0.03);
  --shadow-primary: 0 4px 14px rgba(103, 89, 237, 0.35);

  --font-display: 'Inter', sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  --header-h: 68px;
  --sidebar-w: 220px;
  --transition: 160ms cubic-bezier(0.4, 0, 0.2, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text);
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
  overflow-x: hidden;
}

html {
  overflow-x: hidden;
  width: 100%;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  margin: 0 0 0.5em;
  letter-spacing: -0.02em;
}

p { margin: 0 0 1em; color: var(--color-text-soft); }
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
button { font-family: inherit; cursor: pointer; }

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: 4px;
}

.container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ================================================================
   TOP BAR (App Shell) — clean, light, glassy
   ================================================================ */
.room-topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(253, 248, 255, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.room-topbar__inner {
  display: flex;
  align-items: center;
  gap: 16px;
  height: 100%;
  padding: 0 24px;
  max-width: 100%;
}

/* Logo in topbar */
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  color: var(--color-primary-dark);
  text-decoration: none;
  flex-shrink: 0;
}

.logo img {
  height: 32px;
  width: auto;
  border-radius: 8px;
}

.room-id-block {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
}

.room-id-block__code {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  color: var(--color-text);
}

.room-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

.meta-pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 12px;
  border-radius: var(--radius-pill);
  font-size: 12.5px;
  font-weight: 500;
  background: var(--color-sidebar);
  color: var(--color-text-soft);
  border: 1px solid var(--color-border);
  white-space: nowrap;
}

.meta-pill--time.is-low {
  background: #FFDAD6;
  border-color: #FFB4AB;
  color: #93000A;
}

/* QR popover */
.qr-popover { position: relative; }
.qr-popover__panel {
  display: none;
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px;
  box-shadow: var(--shadow-lg);
  text-align: center;
  z-index: 200;
  min-width: 180px;
}
.qr-popover__panel.is-open { display: block; }
.qr-box { width: 140px; height: 140px; margin: 0 auto; }
.qr-box canvas, .qr-box img { width: 100% !important; height: 100% !important; border-radius: var(--radius-sm); }

/* ================================================================
   ADSENSE BANNER — TOP
   ================================================================ */
.ad-banner-top {
  background: var(--color-bg);
  text-align: center;
  padding: 8px 16px;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  max-width: 100vw;
  overflow: hidden;
}
.ad-banner-top ins,
.ad-banner-top ins iframe {
  max-width: 100% !important;
}

/* ================================================================
   BODY LAYOUT — floating dashboard card
   ================================================================ */
.room-body {
  display: flex;
  max-width: 1280px;
  margin: 20px auto 32px;
  min-height: calc(100vh - var(--header-h) - 90px);
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

/* ================================================================
   SIDEBAR
   ================================================================ */
.sidebar {
  width: var(--sidebar-w);
  flex-shrink: 0;
  background: var(--color-sidebar);
  border-right: 1px solid var(--color-border);
  overflow-y: auto;
  padding: 16px 12px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sidebar__header {
  padding: 8px 12px 16px;
  margin-bottom: 4px;
}
.sidebar__header-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  color: var(--color-text);
  letter-spacing: -0.01em;
}
.sidebar__header-sub {
  font-size: 11.5px;
  color: var(--color-text-faint);
  margin-top: 2px;
}

.sidebar__link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  font-weight: 500;
  color: var(--color-text-soft);
  transition: background var(--transition), color var(--transition);
  cursor: pointer;
  text-decoration: none;
}

.sidebar__link:hover {
  background: var(--color-card);
  color: var(--color-primary-dark);
}

.sidebar__link.is-active {
  background: var(--color-primary-xlight);
  color: var(--color-primary-dark);
  font-weight: 600;
}

.sidebar__link svg {
  flex-shrink: 0;
  opacity: 0.75;
}
.sidebar__link.is-active svg { opacity: 1; }

.sidebar__count {
  margin-left: auto;
  background: rgba(103, 89, 237, 0.12);
  color: var(--color-primary-dark);
  border-radius: var(--radius-pill);
  padding: 1px 7px;
  font-size: 11px;
  font-weight: 600;
}

.sidebar__link.is-active .sidebar__count {
  background: var(--color-card);
  color: var(--color-primary-dark);
}

.sidebar__divider {
  height: 1px;
  background: var(--color-border);
  margin: 8px 4px;
}

/* ================================================================
   CONTENT AREA
   ================================================================ */
.content-area {
  flex: 1;
  overflow-y: auto;
  padding: 28px 32px;
  display: flex;
  flex-direction: column;
  gap: 0;
}

/* Ad slot inside content */
.ad-slot-content {
  background: var(--color-sidebar);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-md);
  padding: 12px;
  text-align: center;
  margin-bottom: 20px;
  min-height: 90px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-faint);
  font-size: 12px;
  max-width: 100%;
  overflow: hidden;
}
.ad-slot-content ins,
.ad-slot-content ins iframe {
  max-width: 100% !important;
}

/* ================================================================
   PANELS
   ================================================================ */
.panel { display: none; }
.panel.is-active { display: block; }

.panel-head {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border);
}

.panel-head h2 {
  font-size: 22px;
  margin: 0;
  color: var(--color-text);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.notes-status {
  font-size: 12px;
  color: var(--color-text-faint);
  margin-left: auto;
}

/* ================================================================
   BUTTONS — pill-shaped primary interactions
   ================================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 10px 22px;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 14px;
  border: 1px solid transparent;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition), filter var(--transition);
  white-space: nowrap;
}
.btn:active { transform: translateY(1px) scale(0.98); }

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff;
  box-shadow: var(--shadow-primary);
}
.btn-primary:hover { filter: brightness(1.08); }

.btn-secondary {
  background: #fff;
  color: var(--color-text);
  border-color: var(--color-border);
}
.btn-secondary:hover { border-color: var(--color-primary); color: var(--color-primary-dark); }

.btn-ghost {
  background: transparent;
  color: var(--color-text-soft);
  border-radius: var(--radius-sm);
}
.btn-ghost:hover { background: var(--color-primary-light); color: var(--color-primary-dark); }

.btn-danger {
  background: var(--color-danger);
  color: #fff;
}
.btn-danger:hover { filter: brightness(1.08); }

.btn-sm { padding: 7px 16px; font-size: 13px; }
.btn-icon { padding: 8px; border-radius: var(--radius-pill); }

/* ================================================================
   DROPZONE
   ================================================================ */
.dropzone {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px 24px;
  text-align: center;
  background: var(--color-sidebar);
  transition: border-color var(--transition), background var(--transition);
  cursor: pointer;
  margin-bottom: 24px;
}
.dropzone:hover, .dropzone.is-dragover {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
}
.dropzone__icon {
  display: flex;
  justify-content: center;
  margin-bottom: 12px;
  color: var(--color-primary);
}
.dropzone strong {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
}
.dropzone p {
  font-size: 13px;
  color: var(--color-text-faint);
  margin-bottom: 16px;
}

/* ================================================================
   FILE LIST
   ================================================================ */
.file-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 4px;
}

.file-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: box-shadow var(--transition), border-color var(--transition);
}
.file-row:hover { box-shadow: var(--shadow-sm); border-color: var(--color-primary-xlight); }

.file-row__icon {
  color: var(--color-primary);
  flex-shrink: 0;
}

.file-row__body { flex: 1; min-width: 0; }
.file-row__name {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--color-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.file-row__meta { font-size: 12px; color: var(--color-text-faint); margin-top: 2px; }
.file-row__actions { display: flex; gap: 6px; flex-shrink: 0; }

/* ================================================================
   UPLOAD PROGRESS
   ================================================================ */
.upload-progress-row {
  padding: 12px 14px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 8px;
}
.upload-progress-row__top {
  display: flex;
  justify-content: space-between;
  font-size: 12.5px;
  color: var(--color-text-soft);
  margin-bottom: 8px;
  gap: 10px;
}
.upload-progress-row__top span:first-child {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.upload-progress-row .js-pct { font-weight: 600; color: var(--color-primary-dark); flex-shrink: 0; }
.upload-progress-row .storage-bar { margin-bottom: 8px; }

/* ================================================================
   STORAGE BAR
   ================================================================ */
.storage-bar {
  height: 6px;
  background: var(--color-border);
  border-radius: var(--radius-pill);
  overflow: hidden;
}
.storage-bar span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary-dark), var(--color-primary));
  border-radius: var(--radius-pill);
  transition: width 0.4s;
}

/* ================================================================
   NOTES
   ================================================================ */
.editor-toolbar {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}
.editor-toolbar button {
  padding: 6px 13px;
  border-radius: var(--radius-pill);
  font-size: 12.5px;
  font-weight: 500;
  background: var(--color-sidebar);
  border: 1px solid var(--color-border);
  color: var(--color-text-soft);
  transition: background var(--transition), color var(--transition);
}
.editor-toolbar button:hover {
  background: var(--color-primary-light);
  border-color: var(--color-primary);
  color: var(--color-primary-dark);
}

.notes-textarea {
  width: 100%;
  height: 320px;
  padding: 16px 18px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-card);
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--color-text);
  line-height: 1.65;
  resize: vertical;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.notes-textarea:focus { border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(108,76,245,0.12); }

/* ================================================================
   CLIPBOARD
   ================================================================ */
.clip-form {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
}
.clip-form textarea {
  flex: 1;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 13.5px;
  color: var(--color-text);
  background: var(--color-card);
  outline: none;
  resize: none;
  height: 80px;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.clip-form textarea:focus { border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(108,76,245,0.12); }

.clip-item {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  margin-bottom: 8px;
  position: relative;
}
.clip-item pre {
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--color-text);
  white-space: pre-wrap;
  word-break: break-word;
  margin: 0;
}
.clip-item__actions {
  display: flex;
  gap: 6px;
  margin-top: 10px;
}
.clip-item__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 11.5px;
  color: var(--color-text-faint);
  margin-top: 10px;
}

/* ================================================================
   MEDIA GRID
   ================================================================ */
.media-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 14px;
}

.media-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow var(--transition), border-color var(--transition);
}
.media-card:hover { box-shadow: var(--shadow-sm); border-color: var(--color-primary-xlight); }
.media-card__preview {
  width: 100%;
  height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-sidebar);
  color: var(--color-primary);
  overflow: hidden;
}
.media-card__preview img, .media-card__preview video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.media-card__name {
  padding: 8px 10px;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ================================================================
   DEVICES
   ================================================================ */
.device-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 16px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 8px;
}
.device-row__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.device-row__label { font-size: 13.5px; font-weight: 600; flex: 1; }
.device-row__time { font-size: 12px; color: var(--color-text-faint); }

/* ================================================================
   CARD
   ================================================================ */
.card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}
.field-hint {
  font-size: 12.5px;
  color: var(--color-text-faint);
  margin-bottom: 4px;
}

/* ================================================================
   EMPTY STATE
   ================================================================ */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 12px;
  padding: 48px 24px;
  color: var(--color-text-faint);
  background: var(--color-sidebar);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-md);
}
.empty-state svg { color: var(--color-primary); opacity: 0.5; }
.empty-state p { margin: 0; font-size: 13.5px; color: var(--color-text-faint); max-width: 280px; }

/* ================================================================
   TOASTS
   ================================================================ */
.toast-stack {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-width: 340px;
}
.toast {
  padding: 12px 18px;
  border-radius: var(--radius-md);
  font-size: 13.5px;
  font-weight: 500;
  background: var(--color-text);
  color: #fff;
  box-shadow: var(--shadow-lg);
  animation: toastIn 0.2s ease;
}
.toast--success { background: var(--color-success); }
.toast--error { background: var(--color-danger); }
@keyframes toastIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ================================================================
   NAVBAR (Marketing pages)
   ================================================================ */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  height: 68px;
  display: flex;
  align-items: center;
  background: rgba(253, 248, 255, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}
.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}
.navbar .logo { color: var(--color-primary-dark); }
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links a {
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  font-weight: 500;
  font-size: 14px;
  color: var(--color-text-soft);
  transition: background var(--transition), color var(--transition);
}
.nav-links a:hover, .nav-links a[aria-current="page"] {
  color: var(--color-primary-dark);
  background: var(--color-primary-light);
}
.nav-cta .btn-primary { box-shadow: var(--shadow-primary); }

/* Language switcher */
.lang-select {
  appearance: none;
  -webkit-appearance: none;
  font-family: inherit;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--color-text-soft);
  background: var(--color-sidebar);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  padding: 6px 28px 6px 12px;
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%2383808F' stroke-width='1.5' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
}
.nav-lang { list-style: none; display: flex; align-items: center; }
.footer__links a { color: var(--color-primary-xlight); }

/* ================================================================
   MARKETING — HERO
   ================================================================ */
.hero {
  background: var(--color-primary-light);
  padding: 80px 0 88px;
  text-align: center;
}
.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(34px, 5vw, 56px);
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: 16px;
  line-height: 1.1;
  letter-spacing: -0.03em;
}
.hero h1 span { color: var(--color-primary); }
.hero p {
  font-size: clamp(15px, 2vw, 18px);
  color: var(--color-text-soft);
  max-width: 560px;
  margin: 0 auto 32px;
}
.hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  font-size: 12.5px;
  font-weight: 600;
  background: #fff;
  color: var(--color-primary-dark);
  border: 1px solid var(--color-border);
  margin-bottom: 24px;
}

/* ================================================================
   MARKETING — SECTIONS
   ================================================================ */
.section {
  padding: 64px 0;
}
.section-head {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 48px;
}
.section-head h2 {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 12px;
}
.section-head p {
  font-size: 16px;
  color: var(--color-text-soft);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--color-primary-dark);
  background: var(--color-primary-light);
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
}

/* Feature grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
}
.feature-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
}
.feature-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.feature-card__icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary-dark);
  margin-bottom: 14px;
}
.feature-card h3 {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 6px;
}
.feature-card p {
  font-size: 13.5px;
  color: var(--color-text-soft);
  margin: 0;
}

/* Steps */
.steps {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 640px;
  margin: 0 auto;
}
.step {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 20px 22px;
}
.step__num {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  flex-shrink: 0;
}
.step__title {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 4px;
}
.step__desc {
  font-size: 13.5px;
  color: var(--color-text-soft);
  margin: 0;
}

/* FAQ */
.faq {
  max-width: 700px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.faq-item {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0;
  overflow: hidden;
}
.faq-item summary {
  padding: 16px 20px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  color: var(--color-text);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  font-size: 20px;
  font-weight: 300;
  color: var(--color-primary);
  transition: transform var(--transition);
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p {
  padding: 0 20px 16px;
  font-size: 14px;
  color: var(--color-text-soft);
  margin: 0;
}

/* CTA Banner */
.cta-banner {
  background: var(--color-primary-dark);
  border-radius: var(--radius-lg);
  padding: 44px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.cta-banner h2 { color: #fff; font-size: 26px; margin-bottom: 6px; }
.cta-banner p { color: rgba(255,255,255,0.80); margin: 0; }
.cta-banner .btn { background: #fff; color: var(--color-primary-dark); box-shadow: none; }
.cta-banner .btn:hover { background: #F5F3FF; }

/* ================================================================
   AD SLOT — Marketing pages
   ================================================================ */
.ad-section {
  padding: 8px 0;
  background: var(--color-bg);
  text-align: center;
  min-height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ================================================================
   FOOTER
   ================================================================ */
.footer {
  background: var(--color-text);
  color: rgba(255,255,255,0.60);
  padding: 32px 0;
  text-align: center;
}
.footer__inner { display: flex; flex-direction: column; gap: 6px; }
.footer p { font-size: 13px; margin: 0; color: rgba(255,255,255,0.60); }
.footer a { color: var(--color-primary-xlight); }

/* ================================================================
   PRIVACY / SITEMAP PAGES
   ================================================================ */
.legal-page {
  max-width: 780px;
  margin: 48px auto;
  padding: 0 24px 64px;
}
.legal-page h1 { font-size: 30px; margin-bottom: 8px; }
.legal-page h2 { font-size: 18px; margin-top: 28px; color: var(--color-text); }
.legal-page p, .legal-page li { font-size: 14.5px; color: var(--color-text-soft); line-height: 1.75; }
.legal-page ul { padding-left: 20px; }
.legal-page .last-updated { font-size: 12.5px; color: var(--color-text-faint); margin-bottom: 32px; }

/* ================================================================
   RESPONSIVE
   Breakpoints: >1024 desktop · 769-1024 tablet · 481-768 mobile
   · <=480 small mobile
   ================================================================ */

/* ---- Fluid container padding on all but the largest screens ---- */
@media (max-width: 1024px) {
  .container { padding: 0 20px; }
}

/* ==========================================================
   TABLET (769px – 1024px)
   ========================================================== */
@media (max-width: 1024px) {
  .room-body { margin: 16px; }
  :root { --sidebar-w: 188px; }
  .content-area { padding: 22px 24px; }
  .sidebar { padding: 14px 10px; }

  .feature-grid { grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); }
  .media-grid { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); }
  .hero { padding: 64px 0 72px; }
}

/* ==========================================================
   MOBILE (up to 768px)
   Sidebar becomes a horizontally-scrollable tab strip
   ========================================================== */
@media (max-width: 768px) {
  html { -webkit-text-size-adjust: 100%; }

  /* --- App shell --- */
  .room-body {
    flex-direction: column;
    margin: 0;
    border-radius: 0;
    border-left: 0;
    border-right: 0;
    box-shadow: none;
    min-height: calc(100vh - var(--header-h) - 60px);
  }

  .sidebar {
    width: 100%;
    flex-direction: row;
    align-items: center;
    gap: 4px;
    padding: 10px 12px;
    border-right: none;
    border-bottom: 1px solid var(--color-border);
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .sidebar::-webkit-scrollbar { display: none; }

  .sidebar__header { display: none; }

  .sidebar__link {
    flex-direction: row;
    flex-shrink: 0;
    padding: 8px 14px;
    border-radius: var(--radius-pill);
    gap: 6px;
  }
  .sidebar__link span:not(.sidebar__count) {
    display: inline;
    font-size: 12.5px;
  }
  .sidebar__link.is-active { background: var(--color-primary); color: #fff; }
  .sidebar__link.is-active svg { color: #fff; }
  .sidebar__count { display: inline-flex; }
  .sidebar__link.is-active .sidebar__count { background: rgba(255,255,255,0.25); color: #fff; }

  .sidebar__divider {
    width: 1px;
    height: 24px;
    margin: 0 4px;
    flex-shrink: 0;
  }

  /* --- Top bar --- */
  .room-topbar__inner { padding: 0 14px; gap: 8px; }
  .room-id-block { gap: 8px; }
  .room-id-block__code { font-size: 13px; }
  .room-subtitle { display: none; }
  .logo span { display: none; }
  .meta-pill:not(.meta-pill--time) { display: none; }
  #storagePill { display: none; }
  .btn-label { display: none; }
  #copyLinkBtn { padding: 8px; border-radius: var(--radius-pill); }

  /* --- Content --- */
  .content-area { padding: 18px 16px; }
  .panel-head { flex-wrap: wrap; gap: 8px; }
  .panel-head h2 { font-size: 19px; }

  /* --- Forms stack on mobile --- */
  .clip-form { flex-direction: column; }
  .clip-form textarea { height: 96px; }
  .clip-form .btn { align-self: flex-end; }

  .dropzone { padding: 28px 16px; }

  .notes-textarea { height: 260px; padding: 14px; }

  .file-row { flex-wrap: wrap; }

  .media-grid { grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); gap: 10px; }

  /* --- Marketing pages --- */
  .navbar__inner { flex-wrap: nowrap; justify-content: flex-start; gap: 10px; }
  .nav-cta { margin-left: auto; }
  .nav-links {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    background: var(--color-card);
    border-bottom: 1px solid var(--color-border);
    padding: 10px 16px 16px;
    box-shadow: var(--shadow-md);
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition), opacity var(--transition);
  }
  .nav-links.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .nav-links a { padding: 12px 14px; border-radius: var(--radius-sm); }
  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    background: #fff;
    color: var(--color-text);
    margin-right: 4px;
  }
  .nav-cta .btn { padding: 10px 14px; font-size: 13px; }

  .hero { padding: 48px 0 56px; }
  .hero h1 { font-size: 30px; }
  .section { padding: 44px 0; }
  .section-head { margin-bottom: 32px; }
  .feature-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .steps { gap: 12px; }
  .step { padding: 16px 18px; gap: 12px; }
  .cta-banner { flex-direction: column; text-align: center; padding: 32px 24px; }
  .legal-page { margin: 32px auto; padding: 0 16px 48px; }
}

@media (min-width: 769px) {
  .nav-toggle { display: none; }
}

/* ==========================================================
   SMALL MOBILE (up to 480px)
   ========================================================== */
@media (max-width: 480px) {
  .room-topbar { height: 58px; }
  :root { --header-h: 58px; }
  .logo img { height: 28px; }

  .room-id-block__code { display: none; }
  .qr-popover { display: none; }

  .panel-head { padding-bottom: 12px; margin-bottom: 16px; }
  .panel-head h2 { font-size: 18px; }
  .panel-head > span { font-size: 11.5px; }

  .dropzone strong { font-size: 14px; }
  .dropzone p { font-size: 12px; }
  .btn { font-size: 13px; padding: 9px 18px; }
  .btn-sm { padding: 6px 14px; }

  .feature-grid { grid-template-columns: 1fr; }
  .media-grid { grid-template-columns: repeat(auto-fill, minmax(110px, 1fr)); }

  .hero h1 { font-size: 26px; }
  .hero p { font-size: 14.5px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { width: 100%; }

  .cta-banner h2 { font-size: 21px; }

  .toast-stack { left: 12px; right: 12px; bottom: 12px; max-width: none; }
  .toast { font-size: 13px; padding: 11px 14px; }
}

/* ==========================================================
   LARGE DESKTOP — a little extra breathing room
   ========================================================== */
@media (min-width: 1440px) {
  .room-body { max-width: 1320px; }
  .content-area { padding: 32px 40px; }
}