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

:root {
  --bg: #0c0c0e;
  --surface: #16161a;
  --surface2: #1e1e24;
  --border: #2a2a35;
  --border-focus: #6366f1;
  --text: #e2e2e9;
  --text-muted: #6b6b80;
  --text-dim: #9898a8;
  --accent: #6366f1;
  --accent-hover: #818cf8;
  --success: #22c55e;
  --warning: #f59e0b;
  --danger: #ef4444;
  --radius: 10px;
  --radius-sm: 6px;
  --transition: 0.18s ease;
}

html, body {
  height: 100%;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* ── Utilities ── */
.hidden { display: none !important; }

/* ── Login ── */
#login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.login-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 40px 36px;
  width: 100%;
  max-width: 380px;
}

.login-logo {
  text-align: center;
  margin-bottom: 28px;
}

.login-logo svg {
  width: 40px;
  height: 40px;
  color: var(--accent);
}

.login-logo h1 {
  font-size: 20px;
  font-weight: 600;
  margin-top: 10px;
  color: var(--text);
}

.login-logo p {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ── App layout ── */
#app-screen {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 10;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 15px;
}

.header-brand svg {
  color: var(--accent);
  width: 22px;
  height: 22px;
}

.main-content {
  flex: 1;
  padding: 32px 24px;
  max-width: 720px;
  margin: 0 auto;
  width: 100%;
}

/* ── Form ── */
.form-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
}

.form-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

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

label {
  display: block;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-dim);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

input[type="text"],
input[type="password"],
select,
textarea {
  width: 100%;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 14px;
  font-family: inherit;
  padding: 10px 12px;
  outline: none;
  transition: border-color var(--transition);
  appearance: none;
  -webkit-appearance: none;
}

input[type="text"]:focus,
input[type="password"]:focus,
select:focus,
textarea:focus {
  border-color: var(--border-focus);
}

input::placeholder, textarea::placeholder {
  color: var(--text-muted);
}

select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236b6b80' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
  cursor: pointer;
}

select option {
  background: var(--surface2);
  color: var(--text);
}

textarea {
  resize: vertical;
  min-height: 140px;
  line-height: 1.6;
}

/* ── Character counter ── */
.textarea-wrapper {
  position: relative;
}

.char-counter {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 6px;
  font-size: 12px;
  color: var(--text-muted);
}

.char-count-num {
  font-variant-numeric: tabular-nums;
  font-weight: 500;
  transition: color var(--transition);
}

.char-count-num.ok { color: var(--success); }
.char-count-num.warn { color: var(--warning); }
.char-count-num.danger { color: var(--danger); }

.char-limit-badge {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 6px;
  font-size: 11px;
  color: var(--text-muted);
}

/* ── Image upload ── */
.upload-zone {
  border: 1.5px dashed var(--border);
  border-radius: var(--radius-sm);
  padding: 24px;
  text-align: center;
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition);
  background: var(--surface2);
  position: relative;
}

.upload-zone:hover,
.upload-zone.dragover {
  border-color: var(--accent);
  background: rgba(99, 102, 241, 0.05);
}

.upload-zone input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
  width: 100%;
  height: 100%;
}

.upload-icon {
  width: 28px;
  height: 28px;
  margin: 0 auto 8px;
  color: var(--text-muted);
}

.upload-text {
  font-size: 13px;
  color: var(--text-muted);
}

.upload-text strong {
  color: var(--accent);
}

.upload-hint {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ── Image preview ── */
.image-preview {
  position: relative;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--surface2);
  border: 1px solid var(--border);
}

.image-preview img {
  width: 100%;
  max-height: 260px;
  object-fit: contain;
  display: block;
}

.image-preview-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-muted);
}

.image-preview-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 260px;
}

/* ── Upload progress ── */
.upload-progress {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--text-muted);
}

.upload-spinner {
  width: 18px;
  height: 18px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  flex-shrink: 0;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  text-decoration: none;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:not(:disabled):hover {
  background: var(--accent-hover);
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
}

.btn-ghost:not(:disabled):hover {
  color: var(--text);
  border-color: var(--text-muted);
}

.btn-danger-ghost {
  background: transparent;
  color: var(--danger);
  border: 1px solid transparent;
  padding: 4px 10px;
  font-size: 12px;
}

.btn-danger-ghost:hover {
  border-color: var(--danger);
  background: rgba(239, 68, 68, 0.08);
}

.form-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

.form-footer-right {
  display: flex;
  gap: 10px;
}

/* ── Toast notifications ── */
#toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
}

.toast {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  font-size: 13px;
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 260px;
  max-width: 380px;
  pointer-events: all;
  animation: toast-in 0.25s ease;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
}

.toast.success { border-left: 3px solid var(--success); }
.toast.error { border-left: 3px solid var(--danger); }
.toast.info { border-left: 3px solid var(--accent); }

.toast-icon { flex-shrink: 0; font-size: 16px; }
.toast-msg { flex: 1; color: var(--text); }

/* ── Error message ── */
.error-msg {
  color: var(--danger);
  font-size: 12px;
  margin-top: 6px;
}

/* ── Spinner ── */
.btn-spinner {
  width: 14px;
  height: 14px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* ── Animations ── */
@keyframes spin {
  to { transform: rotate(360deg); }
}

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

/* ── Responsive ── */
@media (max-width: 540px) {
  .form-row { grid-template-columns: 1fr; }
  .main-content { padding: 20px 16px; }
  .form-card { padding: 20px 16px; }
  .login-card { padding: 28px 20px; }
  .form-footer { flex-direction: column; gap: 12px; align-items: stretch; }
  .form-footer-right { flex-direction: column; }
}