/* ===== APP SHELL ===== */
.app-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem clamp(1rem, 4vw, 3rem);
  background: var(--bg);
  border-bottom: 1px solid var(--card-border);
  backdrop-filter: blur(12px);
}

.nav-brand {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.2rem;
  color: var(--accent);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.nav-links {
  display: flex;
  gap: 0.25rem;
}

.nav-link {
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--fg-muted);
  text-decoration: none;
  padding: 0.4rem 0.9rem;
  border-radius: 0.5rem;
  transition: color 0.2s, background 0.2s;
  cursor: pointer;
}

.nav-link:hover,
.nav-link.active {
  color: var(--fg);
  background: var(--accent-soft);
}

/* ===== VIEWS ===== */
.view {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem clamp(1rem, 4vw, 3rem) 4rem;
}

.view.hidden { display: none; }

.view-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 2rem;
  gap: 1rem;
}

.view-title {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.view-sub {
  color: var(--fg-muted);
  font-size: 0.9rem;
  margin-top: 0.25rem;
}

.header-actions {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.6rem 1.25rem;
  border-radius: 0.5rem;
  border: none;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.1s;
  text-decoration: none;
  white-space: nowrap;
}

.btn:active { transform: scale(0.98); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-primary {
  background: var(--accent);
  color: #0f0d0b;
}
.btn-primary:hover { opacity: 0.9; }

.btn-ghost {
  background: transparent;
  color: var(--fg-muted);
  border: 1px solid var(--card-border);
}
.btn-ghost:hover { color: var(--fg); border-color: var(--accent); }

.btn-danger {
  background: transparent;
  color: #e05a5a;
  border: 1px solid rgba(224, 90, 90, 0.3);
}
.btn-danger:hover { background: rgba(224, 90, 90, 0.1); }

.btn-sm {
  font-size: 0.8rem;
  padding: 0.4rem 0.9rem;
}

.btn-back {
  display: inline-flex;
  align-items: center;
  background: none;
  border: none;
  color: var(--fg-muted);
  font-family: var(--font-body);
  font-size: 0.9rem;
  cursor: pointer;
  padding: 0;
  transition: color 0.2s;
}
.btn-back:hover { color: var(--accent); }

/* ===== CLIENTS GRID ===== */
.clients-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}

.client-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 1.5rem;
  cursor: pointer;
  transition: border-color 0.2s, transform 0.1s;
  text-decoration: none;
  display: block;
}

.client-card:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}

.client-card-header {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin-bottom: 1rem;
}

.client-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--accent-soft);
  border: 1px solid var(--card-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  color: var(--accent);
  flex-shrink: 0;
}

.client-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  color: var(--fg);
}

.client-contact {
  font-size: 0.8rem;
  color: var(--fg-muted);
  margin-top: 0.15rem;
}

.client-card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.client-meta-item {
  font-size: 0.8rem;
  color: var(--fg-muted);
}

.client-meta-item strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--fg);
}

.rebooking-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  background: rgba(212, 168, 83, 0.2);
  color: var(--accent);
  padding: 0.2rem 0.6rem;
  border-radius: 100px;
}

/* ===== EMPTY STATE ===== */
.empty-state {
  text-align: center;
  padding: 4rem 2rem;
  color: var(--fg-muted);
}

.empty-state-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  opacity: 0.4;
}

.empty-state h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: var(--fg);
  margin-bottom: 0.5rem;
}

.empty-state p {
  font-size: 0.9rem;
  max-width: 300px;
  margin: 0 auto 1.5rem;
}

/* ===== CLIENT DETAIL ===== */
.client-detail-header {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
  margin-bottom: 2.5rem;
  padding: 1.5rem;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
}

.client-detail-header .client-avatar {
  width: 60px;
  height: 60px;
  font-size: 1.4rem;
}

.client-detail-name {
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 2.5vw, 1.8rem);
  font-weight: 800;
  margin-bottom: 0.3rem;
}

.client-detail-meta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 0.5rem;
}

.client-detail-meta span {
  font-size: 0.875rem;
  color: var(--fg-muted);
}

.client-detail-notes {
  font-size: 0.875rem;
  color: var(--fg-muted);
  font-style: italic;
}

/* ===== SECTION HEADER ===== */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
}

/* ===== VISITS LIST ===== */
.visits-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.visit-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  overflow: hidden;
}

.visit-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--card-border);
  cursor: pointer;
}

.visit-date {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--accent);
}

.visit-developer {
  font-size: 0.8rem;
  color: var(--fg-muted);
  margin-top: 0.15rem;
}

.visit-actions {
  display: flex;
  gap: 0.5rem;
  opacity: 0;
  transition: opacity 0.2s;
}

.visit-card:hover .visit-actions {
  opacity: 1;
}

.visit-card-body {
  padding: 1.25rem;
}

.formula-block {
  background: rgba(212, 168, 83, 0.06);
  border: 1px solid rgba(212, 168, 83, 0.15);
  border-radius: 8px;
  padding: 1rem 1.25rem;
  margin-bottom: 1rem;
}

.formula-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.formula-text {
  font-family: 'Courier New', monospace;
  font-size: 0.875rem;
  color: var(--fg);
  white-space: pre-wrap;
  line-height: 1.6;
}

.visit-notes-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.visit-note-block {
  padding: 0.75rem 1rem;
  background: var(--bg-warm);
  border-radius: 8px;
}

.visit-note-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-muted);
  margin-bottom: 0.4rem;
}

.visit-note-text {
  font-size: 0.875rem;
  color: var(--fg);
  line-height: 1.5;
}

.visit-meta-row {
  display: flex;
  gap: 1.5rem;
  padding-top: 1rem;
  margin-top: 1rem;
  border-top: 1px solid var(--card-border);
}

.visit-meta-item {
  font-size: 0.8rem;
  color: var(--fg-muted);
}

.visit-meta-item strong {
  color: var(--fg);
}

/* ===== REBOOKING ===== */
.rebooking-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1rem;
}

.rebooking-card {
  background: var(--card-bg);
  border: 1px solid rgba(212, 168, 83, 0.25);
  border-radius: 12px;
  padding: 1.25rem 1.5rem;
  cursor: pointer;
  transition: border-color 0.2s;
}

.rebooking-card:hover {
  border-color: var(--accent);
}

.rebooking-card-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  margin-bottom: 0.5rem;
}

.rebooking-days {
  font-size: 0.85rem;
  color: var(--accent);
  font-weight: 500;
}

.rebooking-last {
  font-size: 0.8rem;
  color: var(--fg-muted);
  margin-top: 0.25rem;
}

/* ===== FORMS ===== */
.form-card {
  max-width: 680px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 2rem 2rem;
}

.form-title {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 1.75rem;
}

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

.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--fg-muted);
  margin-bottom: 0.45rem;
}

.req { color: var(--accent); }

.form-input {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  padding: 0.65rem 0.9rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--fg);
  transition: border-color 0.2s;
  outline: none;
  -webkit-appearance: none;
}

.form-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.form-input::placeholder { color: var(--fg-muted); opacity: 0.6; }

.form-textarea {
  resize: vertical;
  min-height: 90px;
  line-height: 1.6;
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='none'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23a89f91' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.9rem center;
  padding-right: 2.5rem;
}

.form-select option {
  background: #1a1714;
  color: var(--fg);
}

.form-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 0.5rem;
}

.invisible { visibility: hidden; }

/* ===== TOAST ===== */
.toast {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 10px;
  padding: 0.85rem 1.25rem;
  font-size: 0.9rem;
  color: var(--fg);
  z-index: 999;
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
  transform: translateY(0);
  transition: opacity 0.3s, transform 0.3s;
}

.toast.hidden {
  display: none;
}

.toast.success { border-color: rgba(83, 212, 120, 0.4); }
.toast.error { border-color: rgba(224, 90, 90, 0.4); }

/* ===== LOADING ===== */
.spinner {
  display: inline-block;
  width: 1rem;
  height: 1rem;
  border: 2px solid var(--card-border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.loading-row {
  text-align: center;
  padding: 3rem;
  color: var(--fg-muted);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 640px) {
  .form-row { grid-template-columns: 1fr; }
  .invisible { display: none; }
  .visit-notes-row { grid-template-columns: 1fr; }
  .client-detail-header { flex-direction: column; }
  .view-header { flex-wrap: wrap; }
}