:root {
  --bg: #131316;
  --bg-elevated: #1c1c21;
  --bg-hover: #26262d;
  --border: #2e2e36;
  --text: #eaeaef;
  --text-dim: #9a9aa5;
  --accent: #6c8cff;
  --accent-hover: #8aa4ff;
  --danger: #ff6b6b;
  --danger-hover: #ff8a8a;
  --star: #f5c451;
  --radius: 14px;
  --shadow: 0 8px 28px rgba(0, 0, 0, 0.45);
  --folder-color: #f5c451;
  --video-color: #ff6b81;
  --image-color: #6bc1ff;
  --audio-color: #b18cff;
  --archive-color: #ffa057;
  --doc-color: #6bd191;
  --sheet-color: #4fd68c;
  --code-color: #7fd4d4;
  --file-color: #9a9aa5;
  --pdf-color: #ff5c5c;
  --mail-color: #5c9eff;
  --icon-tint: rgba(255, 255, 255, 0.05);
  --icon-tint-strong: rgba(255, 255, 255, 0.08);
  --bottom-nav-h: 64px;
  --max-w: 720px;
}

:root[data-theme="light"] {
  --bg: #f4f5f7;
  --bg-elevated: #ffffff;
  --bg-hover: #edeef1;
  --border: #dde0e4;
  --text: #16171a;
  --text-dim: #6b7177;
  --accent: #4a63e8;
  --accent-hover: #3650d6;
  --danger: #e0392f;
  --danger-hover: #c62f26;
  --star: #c9881a;
  --shadow: 0 8px 28px rgba(20, 22, 30, 0.12);
  --icon-tint: rgba(16, 18, 26, 0.05);
  --icon-tint-strong: rgba(16, 18, 26, 0.08);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, Helvetica, Arial, sans-serif;
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-y: contain;
}

/* A real block of content at the end of the page, not just padding on the
   scroll container — some mobile browsers don't reliably scroll all the way
   into a scroll container's own bottom padding, which cut the last row in
   a long list off behind the fixed bottom nav / FAB. Height clears both,
   plus the device's own home-indicator inset instead of a flat guess. */
.scroll-spacer {
  height: calc(var(--bottom-nav-h) + 100px + env(safe-area-inset-bottom));
}

button, input, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

/* ---------- Topbar ---------- */

.topbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 20;
}

.topbar__search {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 26px;
  padding: 10px 16px;
  color: var(--text-dim);
  max-width: var(--max-w);
  margin: 0 auto;
}

.topbar__search:focus-within {
  border-color: var(--accent);
  color: var(--text);
}

.topbar__search input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text);
  min-width: 0;
}

.search-clear {
  background: transparent;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  font-size: 18px;
  line-height: 1;
  padding: 0 4px;
}

.topbar__avatar-wrap {
  position: relative;
  flex-shrink: 0;
}

.topbar__avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--accent);
  color: #10121a;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 15px;
  border: none;
  cursor: pointer;
  padding: 0;
}

.avatar-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: var(--shadow);
  overflow: hidden;
  z-index: 40;
  min-width: 140px;
}

.avatar-menu[hidden] { display: none; }

.avatar-menu button {
  display: block;
  width: 100%;
  padding: 11px 14px;
  background: transparent;
  border: none;
  text-align: left;
  cursor: pointer;
  color: var(--text);
}

.avatar-menu button:hover { background: var(--bg-hover); }

#logout-btn { color: var(--danger-hover); }

/* ---------- Chips ---------- */

.chips {
  display: flex;
  gap: 8px;
  padding: 4px 16px 10px;
  overflow-x: auto;
  scrollbar-width: none;
  max-width: var(--max-w);
  margin: 0 auto;
}

.chips::-webkit-scrollbar { display: none; }

.chip {
  flex-shrink: 0;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text-dim);
  border-radius: 18px;
  padding: 7px 16px;
  font-size: 13px;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.chip:hover { background: var(--bg-hover); }

.chip.is-active {
  background: var(--accent);
  border-color: var(--accent);
  color: #10121a;
  font-weight: 600;
}

/* ---------- Breadcrumbs ---------- */

.breadcrumbs {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 4px;
  padding: 2px 16px 10px;
  color: var(--text-dim);
  font-size: 13px;
  max-width: var(--max-w);
  margin: 0 auto;
}

.breadcrumbs[hidden] { display: none; }

.breadcrumbs__item {
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 6px;
  white-space: nowrap;
}

.breadcrumbs__item:hover {
  background: var(--bg-hover);
  color: var(--text);
}

.breadcrumbs__item--current {
  color: var(--text);
  font-weight: 600;
  cursor: default;
}

.breadcrumbs__item--current:hover { background: transparent; }

.breadcrumbs__sep { color: var(--text-dim); opacity: 0.5; }

/* ---------- Content ---------- */

.content {
  padding: 4px 16px 24px;
  max-width: var(--max-w);
  margin: 0 auto;
}

.section-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin: 10px 4px 12px;
}

.section-title[hidden] { display: none; }

/* ---------- List rows ---------- */

.list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.row {
  position: relative;
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 14px;
  cursor: pointer;
  transition: background 0.12s ease, border-color 0.12s ease;
}

.row:hover, .row:active {
  background: var(--bg-hover);
  border-color: var(--accent);
}

.row.is-dragover {
  border-color: var(--accent);
  background: var(--bg-hover);
}

.row__icon {
  flex-shrink: 0;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: var(--icon-tint);
  display: flex;
  align-items: center;
  justify-content: center;
}

.row__icon svg { width: 24px; height: 24px; }

.row__body {
  flex: 1;
  min-width: 0;
}

.row__name {
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 6px;
}

.row__star {
  flex-shrink: 0;
  color: var(--star);
}

.row__meta {
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 2px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.row__menu-btn {
  flex-shrink: 0;
  background: transparent;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  border-radius: 8px;
  padding: 6px;
}

.row__menu-btn:hover { background: var(--icon-tint-strong); color: var(--text); }

.row__menu {
  position: absolute;
  top: calc(100% + 4px);
  right: 14px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: var(--shadow);
  overflow: hidden;
  z-index: 10;
  min-width: 190px;
}

.row__menu button {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 11px 14px;
  background: transparent;
  border: none;
  text-align: left;
  cursor: pointer;
  color: var(--text);
}

.row__menu button:hover { background: var(--bg-hover); }
.row__menu button.danger { color: var(--danger); }
.row__menu button svg { flex-shrink: 0; }

/* ---------- Empty / placeholder states ---------- */

.empty-state, .placeholder-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--text-dim);
  padding: 70px 20px;
  text-align: center;
  gap: 8px;
}

.empty-state svg, .placeholder-state svg { opacity: 0.4; margin-bottom: 6px; }
.empty-state p, .placeholder-state p { font-size: 16px; margin: 0; color: var(--text); }
.empty-state__hint, .placeholder-state__hint { font-size: 13px; }
.empty-state[hidden], .placeholder-state[hidden] { display: none; }

/* ---------- Upload progress ---------- */

.upload-progress {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 14px;
  margin-bottom: 16px;
  position: relative;
  overflow: hidden;
}

.upload-progress__bar {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 0%;
  background: rgba(108, 140, 255, 0.25);
  transition: width 0.15s ease;
}

.upload-progress__label { position: relative; font-size: 13px; color: var(--text-dim); }

/* ---------- Drag & drop overlay ---------- */

.drop-overlay {
  position: fixed;
  inset: 0;
  background: rgba(19, 19, 22, 0.85);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(2px);
}

.drop-overlay[hidden] { display: none; }

.drop-overlay__inner {
  border: 2px dashed var(--accent);
  border-radius: 20px;
  padding: 50px 60px;
  text-align: center;
  color: var(--accent);
}

.drop-overlay__inner p { margin-top: 12px; font-size: 17px; font-weight: 500; }

/* ---------- FAB ---------- */

.fab-wrap {
  position: fixed;
  right: 18px;
  bottom: calc(var(--bottom-nav-h) + 18px);
  z-index: 40;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 10px;
}

.fab-main {
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: var(--accent);
  color: #10121a;
  border: none;
  box-shadow: 0 6px 20px rgba(108, 140, 255, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease;
}

.fab-main:hover { background: var(--accent-hover); }
.fab-main:active { transform: scale(0.94); }
.fab-wrap.is-open .fab-main { transform: rotate(45deg); }

.fab-menu {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 10px;
}

.fab-menu[hidden] { display: none; }

.fab-mini {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 26px;
  padding: 8px 8px 8px 16px;
  cursor: pointer;
  box-shadow: var(--shadow);
  color: var(--text);
}

.fab-mini:hover { background: var(--bg-hover); }

.fab-mini__label { font-size: 13px; white-space: nowrap; }

.fab-mini__icon {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--icon-tint);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  flex-shrink: 0;
}

/* ---------- Bottom nav ---------- */

.bottom-nav {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  height: var(--bottom-nav-h);
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
  display: flex;
  z-index: 30;
  padding-bottom: env(safe-area-inset-bottom);
}

.bottom-nav__item {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-dim);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  cursor: pointer;
  font-size: 11px;
}

.bottom-nav__item.is-active { color: var(--accent); }
.bottom-nav__item:hover { color: var(--text); }
.bottom-nav__item.is-active:hover { color: var(--accent); }

/* ---------- Buttons (shared by modals) ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid transparent;
  border-radius: 8px;
  padding: 9px 16px;
  cursor: pointer;
  font-weight: 500;
  transition: background 0.15s ease, border-color 0.15s ease, transform 0.05s ease;
  white-space: nowrap;
}

.btn:active { transform: scale(0.97); }

.btn--primary { background: var(--accent); color: #10121a; }
.btn--primary:hover { background: var(--accent-hover); }

.btn--ghost { background: transparent; border-color: var(--border); color: var(--text); }
.btn--ghost:hover { background: var(--bg-hover); }

.btn--danger { background: var(--danger); color: #2a0d0d; }
.btn--danger:hover { background: var(--danger-hover); }

/* ---------- Modals ---------- */

.modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal[hidden] { display: none; }

.modal__backdrop { position: absolute; inset: 0; background: rgba(0, 0, 0, 0.65); }

.modal__dialog {
  position: relative;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow);
  z-index: 1;
  max-height: 92vh;
  overflow-y: auto;
}

.modal__dialog--video { width: 100%; max-width: 860px; padding: 0 0 20px; }
.modal__dialog--small { width: 100%; max-width: 380px; padding: 22px; }

.modal__close {
  position: absolute;
  top: 10px;
  right: 10px;
  z-index: 2;
  background: rgba(0, 0, 0, 0.5);
  border: none;
  color: #fff;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  font-size: 20px;
  cursor: pointer;
  line-height: 1;
}

.modal__close:hover { background: rgba(0, 0, 0, 0.75); }

.player { background: #000; border-radius: 14px 14px 0 0; overflow: hidden; }
.player video { width: 100%; max-height: 60vh; display: block; background: #000; }

.player--audio {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 20px;
  padding: 40px 24px;
  color: var(--audio-color);
  background: linear-gradient(180deg, var(--bg-hover), #000);
}

.player--audio[hidden] { display: none; }

.player--audio audio { width: 100%; max-width: 420px; }

/* ---------- Image preview modal ---------- */

.modal__dialog--image {
  max-width: min(92vw, 1100px);
  padding: 16px;
  background: transparent;
  border: none;
  box-shadow: none;
  text-align: center;
}

.modal__dialog--image img {
  max-width: 100%;
  max-height: 80vh;
  border-radius: 10px;
  box-shadow: var(--shadow);
  background: var(--bg-elevated);
}

.image-caption {
  color: var(--text-dim);
  font-size: 13px;
  margin-top: 10px;
}

/* ---------- Text/code preview modal ---------- */

.modal__dialog--text {
  width: 100%;
  max-width: 780px;
  padding: 20px;
}

.text-preview__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
  padding-right: 40px;
}

.text-preview__header span {
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.text-preview__content {
  background: var(--bg-hover);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  max-height: 65vh;
  overflow: auto;
  font-family: "Cascadia Code", Consolas, "Courier New", monospace;
  font-size: 13px;
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-word;
  margin: 0;
}

/* ---------- Email (.eml) preview modal ---------- */

.modal__dialog--email {
  width: 100%;
  max-width: 760px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  max-height: 88vh;
}

.email-header {
  padding-right: 36px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 14px;
  margin-bottom: 14px;
  flex-shrink: 0;
}

.email-subject {
  margin: 0 0 10px;
  font-size: 18px;
  word-break: break-word;
}

.email-meta {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 13px;
  color: var(--text-dim);
}

.email-meta__label { color: var(--text); font-weight: 500; }

.email-attachments {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
  flex-shrink: 0;
}

.email-attachment {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-hover);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 6px 12px 6px 10px;
  font-size: 12px;
  text-decoration: none;
  color: var(--text);
}

.email-attachment:hover { border-color: var(--accent); }
.email-attachment__size { color: var(--text-dim); }

.email-body-text {
  background: var(--bg-hover);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  overflow: auto;
  font-size: 14px;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
  flex: 1;
}

.email-body-html {
  flex: 1;
  width: 100%;
  min-height: 50vh;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
}

.email-body-html[hidden], .email-body-text[hidden], .email-attachments[hidden] { display: none; }

.video-info { padding: 16px 22px 4px; }
.video-title { margin: 0 0 8px; font-size: 19px; word-break: break-word; }
.video-meta { display: flex; gap: 16px; color: var(--text-dim); font-size: 13px; }
.video-meta__item { display: flex; align-items: center; gap: 6px; }

.comments { padding: 18px 22px 0; border-top: 1px solid var(--border); margin-top: 14px; }
.comments__title { font-size: 15px; margin: 14px 0 14px; }
.comments__title span { color: var(--text-dim); font-weight: 400; }

.comment-form { margin-bottom: 18px; }

.comment-form input {
  width: 100%;
  background: var(--bg-hover);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 12px;
  margin-bottom: 8px;
  outline: none;
}

.comment-form input:focus { border-color: var(--accent); }

.comment-form__row { display: flex; gap: 10px; align-items: flex-start; }

.comment-form textarea {
  flex: 1;
  background: var(--bg-hover);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  resize: vertical;
  min-height: 44px;
  outline: none;
}

.comment-form textarea:focus { border-color: var(--accent); }

.comments__list { display: flex; flex-direction: column; gap: 16px; }
.comment { display: flex; gap: 12px; }

.comment__avatar {
  flex-shrink: 0;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--accent);
  color: #10121a;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 14px;
}

.comment__body { flex: 1; min-width: 0; }
.comment__header { display: flex; gap: 8px; align-items: baseline; margin-bottom: 3px; }
.comment__author { font-weight: 600; font-size: 13px; }
.comment__date { font-size: 12px; color: var(--text-dim); }
.comment__content { font-size: 14px; line-height: 1.5; word-break: break-word; white-space: pre-wrap; }
.comments__empty { color: var(--text-dim); font-size: 13px; padding: 6px 0 18px; }

.modal__dialog--small h3 { margin: 0 0 16px; font-size: 17px; }

#prompt-input {
  width: 100%;
  background: var(--bg-hover);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  outline: none;
}

#prompt-input:focus { border-color: var(--accent); }

#login-username, #login-password, #new-account-username, #new-account-password {
  width: 100%;
  background: var(--bg-hover);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  outline: none;
}

#login-username:focus, #login-password:focus,
#new-account-username:focus, #new-account-password:focus { border-color: var(--accent); }

.login-password-row {
  position: relative;
  margin-top: 10px;
}

.login-password-row #login-password { padding-right: 40px; }

.login-password-toggle {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  background: transparent;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  padding: 4px;
  display: flex;
}

.login-password-toggle:hover { color: var(--text); }

.login-error {
  color: var(--danger-hover);
  font-size: 13px;
  margin-top: 10px;
}

.login-error[hidden] { display: none; }

.confirm-text { color: var(--text-dim); margin: 0 0 20px; word-break: break-word; }

/* ---------- Accounts modal ---------- */

.accounts-subtitle {
  font-size: 14px;
  margin: 18px 0 12px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
}

.accounts-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 4px;
  max-height: 220px;
  overflow-y: auto;
}

.account-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  background: var(--bg-hover);
  border-radius: 8px;
  padding: 9px 12px;
}

.account-row__body {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.account-row__name {
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.account-row__usage {
  font-size: 12px;
  color: var(--text-dim);
}

.account-row__badge {
  font-size: 11px;
  color: var(--text-dim);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 2px 8px;
  flex-shrink: 0;
}

.account-row__delete {
  background: transparent;
  border: none;
  color: var(--danger);
  cursor: pointer;
  padding: 4px 6px;
  flex-shrink: 0;
  display: flex;
}

.account-row__delete:hover { color: var(--danger-hover); }

.accounts-empty { color: var(--text-dim); font-size: 13px; padding: 4px 0; }

.modal__actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 18px; }

/* ---------- Toast ---------- */

.toast {
  position: fixed;
  bottom: calc(var(--bottom-nav-h) + 16px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 12px 20px;
  border-radius: 10px;
  box-shadow: var(--shadow);
  z-index: 300;
  font-size: 13px;
  max-width: calc(100vw - 32px);
  text-align: center;
}

.toast--error { border-color: var(--danger); color: var(--danger-hover); }

/* ---------- Wider screens ---------- */

@media (min-width: 720px) {
  .topbar { padding: 16px 24px; }
  .content { padding: 8px 24px 24px; }
  .chips { padding: 4px 24px 10px; }
  .breadcrumbs { padding: 2px 24px 10px; }
}