:root {
  --bg: #f4f6fb;
  --bg-soft: #f8fafc;
  --card: #ffffff;
  --card-hover: #f9fafc;
  --border: #e6e9f0;
  --border-strong: #d7dce7;
  --text: #1a2233;
  --muted: #6b7488;
  --primary: #2563eb;
  --primary-2: #3b82f6;
  --primary-soft: #eaf1ff;
  --danger: #e23744;
  --danger-soft: #fdecee;
  --success: #0fa968;
  --shadow-sm: 0 1px 2px rgba(16, 24, 40, 0.06);
  --shadow: 0 4px 16px rgba(16, 24, 40, 0.08);
  --shadow-lg: 0 16px 40px rgba(16, 24, 40, 0.14);
}

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

body {
  font-family: "Hind Siliguri", system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* ---------- Login ---------- */
.login-body {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: linear-gradient(160deg, #eef3fb 0%, #f6f8fc 60%, #ffffff 100%);
}

.login-card {
  width: 100%;
  max-width: 390px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 42px 34px;
  text-align: center;
  box-shadow: var(--shadow-lg);
  animation: pop 0.4s ease;
}

@keyframes pop {
  from { transform: translateY(12px) scale(0.98); opacity: 0; }
  to { transform: translateY(0) scale(1); opacity: 1; }
}

.login-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 30px;
  background: var(--primary-soft);
  color: var(--primary);
  border-radius: 50%;
  overflow: hidden;
}

.login-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.login-card h1 {
  font-size: 23px;
  font-weight: 700;
  letter-spacing: -0.2px;
}

.subtitle {
  color: var(--muted);
  margin: 6px 0 26px;
  font-size: 14px;
}

#login-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

input[type="password"],
input[type="text"] {
  background: #fff;
  border: 1px solid var(--border-strong);
  color: var(--text);
  padding: 13px 16px;
  border-radius: 11px;
  font-size: 15px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

input::placeholder { color: #9aa3b5; }

input[type="password"]:focus,
input[type="text"]:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

button {
  cursor: pointer;
  font-family: inherit;
}

#login-btn {
  background: var(--primary);
  color: #fff;
  border: none;
  padding: 13px;
  border-radius: 11px;
  font-size: 15px;
  font-weight: 600;
  transition: background 0.18s, transform 0.15s, box-shadow 0.2s;
  box-shadow: var(--shadow-sm);
}

#login-btn:hover { background: #1d4ed8; transform: translateY(-1px); box-shadow: var(--shadow); }
#login-btn:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }

.error {
  color: var(--danger);
  font-size: 14px;
  min-height: 18px;
}

/* ---------- Topbar ---------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 28px;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 17px;
  letter-spacing: -0.2px;
}

.brand-icon {
  font-size: 18px;
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-soft);
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
}

.brand-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.topbar-actions .btn-ghost {
  text-decoration: none;
}

.btn-ghost {
  background: #fff;
  border: 1px solid var(--border-strong);
  color: var(--text);
  padding: 8px 16px;
  border-radius: 9px;
  font-size: 14px;
  font-weight: 500;
  transition: background 0.2s, border-color 0.2s;
}

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

/* ---------- Container ---------- */
.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 30px 28px 64px;
}

/* ---------- Storage panel ---------- */
.storage-panel {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px 18px;
  margin-bottom: 18px;
  box-shadow: var(--shadow-sm);
}

.storage-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.storage-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 15px;
}

.storage-icon {
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-soft);
  border-radius: 8px;
  font-size: 15px;
}

.storage-figure {
  font-size: 14px;
  font-weight: 600;
  color: var(--muted);
}

.storage-track {
  height: 10px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 99px;
  overflow: hidden;
}

.storage-fill {
  height: 100%;
  width: 0%;
  background: var(--primary);
  border-radius: 99px;
  transition: width 0.5s ease, background 0.3s;
}

.storage-fill.warn { background: #f59e0b; }
.storage-fill.full { background: var(--danger); }

.storage-legend {
  display: flex;
  justify-content: space-between;
  margin-top: 8px;
  font-size: 12.5px;
  color: var(--muted);
}

#storage-used { color: var(--primary); font-weight: 600; }

/* ---------- Dropzone ---------- */
.dropzone {
  border: 2px dashed var(--border-strong);
  border-radius: 16px;
  background: #fff;
  padding: 38px 24px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s, transform 0.1s;
  outline: none;
  box-shadow: var(--shadow-sm);
}

.dropzone:hover,
.dropzone:focus,
.dropzone.dragover {
  border-color: var(--primary);
  background: var(--primary-soft);
}

.dropzone.dragover { transform: scale(1.01); }

.upload-icon {
  font-size: 26px;
  width: 56px;
  height: 56px;
  margin: 0 auto 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-soft);
  color: var(--primary);
  border-radius: 14px;
}

.dz-title { font-size: 16px; font-weight: 600; }
.dz-sub { color: var(--muted); font-size: 13px; margin-top: 4px; }

.progress-wrap {
  margin-top: 18px;
  height: 8px;
  background: var(--border);
  border-radius: 99px;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  width: 0%;
  background: var(--primary);
  border-radius: 99px;
  transition: width 0.2s ease;
}

/* ---------- Toolbar ---------- */
.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin: 28px 0 18px;
  flex-wrap: wrap;
}

.search-wrap {
  position: relative;
  flex: 1;
  min-width: 220px;
  max-width: 420px;
}

.search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  opacity: 0.55;
  font-size: 14px;
}

#search {
  width: 100%;
  padding-left: 40px;
  background: #fff;
}

.count {
  color: var(--muted);
  font-size: 14px;
  white-space: nowrap;
  font-weight: 500;
}

/* ---------- Grid ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: 18px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  transition: transform 0.15s, border-color 0.2s, box-shadow 0.2s;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  animation: fade 0.3s ease;
}

@keyframes fade {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.card:hover {
  transform: translateY(-3px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-lg);
}

.thumb {
  height: 124px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-soft);
  font-size: 42px;
  overflow: hidden;
  position: relative;
  border-bottom: 1px solid var(--border);
}

.thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.ext-badge {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(26, 34, 51, 0.78);
  color: #fff;
  font-size: 10px;
  font-weight: 600;
  padding: 2px 7px;
  border-radius: 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.card-body {
  padding: 12px 14px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.fname {
  font-size: 14px;
  font-weight: 600;
  word-break: break-word;
  line-height: 1.35;
}

.fmeta {
  color: var(--muted);
  font-size: 12px;
  margin-top: 4px;
}

.actions {
  display: flex;
  gap: 6px;
  padding: 10px 12px;
  border-top: 1px solid var(--border);
}

.act {
  flex: 1;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 7px;
  border-radius: 8px;
  font-size: 13px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
  text-decoration: none;
}

.act:hover { background: var(--primary-soft); border-color: var(--primary); }
.act.danger:hover { background: var(--danger-soft); color: var(--danger); border-color: var(--danger); }

/* ---------- Empty ---------- */
.empty {
  text-align: center;
  color: var(--muted);
  padding: 64px 20px;
}

.empty-icon { font-size: 50px; margin-bottom: 10px; opacity: 0.7; }

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: #fff;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 12px 20px;
  border-radius: 11px;
  box-shadow: var(--shadow-lg);
  font-size: 14px;
  font-weight: 500;
  opacity: 0;
  transition: transform 0.3s, opacity 0.3s;
  z-index: 100;
  max-width: 90vw;
  border-left: 4px solid var(--muted);
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

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

/* ---------- Modal ---------- */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(16, 24, 40, 0.45);
  backdrop-filter: blur(2px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  padding: 20px;
  animation: fade 0.2s ease;
}

.modal {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 26px;
  width: 100%;
  max-width: 400px;
  box-shadow: var(--shadow-lg);
}

.modal h3 { font-size: 18px; margin-bottom: 14px; font-weight: 700; }

.modal-actions {
  display: flex;
  gap: 10px;
  margin-top: 20px;
}

.modal-actions button {
  flex: 1;
  padding: 11px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  border: 1px solid var(--border-strong);
  transition: background 0.18s, opacity 0.2s;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  border: none !important;
}
.btn-primary:hover { background: #1d4ed8; }

.btn-cancel {
  background: #fff;
  color: var(--text);
}
.btn-cancel:hover { background: var(--bg-soft); }

.btn-danger {
  background: var(--danger);
  color: #fff;
  border: none !important;
}
.btn-danger:hover { background: #c92b38; }

/* ---------- Settings page ---------- */
.settings-container {
  max-width: 560px;
}

.settings-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px;
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
}

.settings-title {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 18px;
}

.avatar-row {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 20px;
}

.avatar-preview {
  width: 84px;
  height: 84px;
  border-radius: 50%;
  background: var(--primary-soft);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 34px;
  overflow: hidden;
  flex-shrink: 0;
  border: 1px solid var(--border);
}

.avatar-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.avatar-actions .hint {
  color: var(--muted);
  font-size: 12.5px;
  margin-top: 8px;
}

.field-label {
  display: block;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--muted);
  margin: 14px 0 6px;
}

.settings-card input[type="text"],
.settings-card input[type="password"] {
  width: 100%;
}

.btn-primary.full {
  width: 100%;
  margin-top: 20px;
  padding: 12px;
  border-radius: 11px;
  font-size: 15px;
  font-weight: 600;
}