/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --primary: #132c3b;
  --primary-dark: #0c1d27;
  --primary-light: #2a5167;
  --brand-brown: #132c3b;
  --success: #16a34a;
  --success-light: #dcfce7;
  --danger: #dc2626;
  --danger-light: #fee2e2;
  --warning: #d97706;
  --warning-light: #fef3c7;
  --gray-50: #112634;
  --gray-100: #173243;
  --gray-200: #234153;
  --gray-300: #36566a;
  --gray-400: #618296;
  --gray-500: #89a4b4;
  --gray-600: #acc1cc;
  --gray-700: #c5d6df;
  --gray-800: #d9e6ec;
  --gray-900: #edf4f7;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(0,0,0,.1), 0 1px 2px rgba(0,0,0,.06);
  --shadow-md: 0 4px 6px rgba(0,0,0,.07), 0 2px 4px rgba(0,0,0,.06);
  --shadow-lg: 0 10px 15px rgba(0,0,0,.07), 0 4px 6px rgba(0,0,0,.05);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--gray-50);
  color: var(--gray-800);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ===== HEADER ===== */
header {
  background: var(--primary-dark);
  border-bottom: 1px solid var(--gray-200);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
  gap: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  background: #e8f1f6;
  border: 1px solid #d7e6ee;
  border-radius: 12px;
  padding: 8px 12px;
}

.logo-icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  object-fit: contain;
  display: block;
}

.logo-icon-barber {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}
.logo h1 {
  font-size: 1.45rem;
  font-weight: 900;
  color: #132c3b;
  line-height: 1.2;
  font-family: "Arial Black", "Segoe UI Black", "Montserrat", "Avenir Next", sans-serif;
  letter-spacing: 0.7px;
}
.logo p { font-size: 0.75rem; color: #132c3b; }

nav {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}

.nav-btn {
  background: none;
  border: none;
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--gray-700);
  cursor: pointer;
  transition: all .15s;
}

.nav-btn:hover { background: var(--gray-100); color: var(--gray-900); }
.nav-btn.active { background: var(--primary-light); color: var(--gray-900); }

/* ===== LAYOUT ===== */
main { flex: 1; padding: 32px 0 60px; }
.container { max-width: 900px; margin: 0 auto; padding: 0 20px; }

.page { display: none; }
.page.active { display: block; }
.hidden { display: none !important; }

.page-title { text-align: center; margin-bottom: 32px; }
.page-title h2 { font-size: 1.75rem; font-weight: 700; color: var(--gray-900); }
.page-title p { margin-top: 6px; color: var(--gray-500); }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all .15s;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover:not(:disabled) { background: var(--primary-dark); }
.btn-primary:disabled { opacity: .5; cursor: not-allowed; }

.btn-secondary { background: var(--gray-200); color: var(--gray-700); }
.btn-secondary:hover { background: var(--gray-300); }

.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: #15803d; }

.btn-danger { background: var(--danger); color: #fff; font-size: 0.8rem; padding: 6px 14px; }
.btn-danger:hover { background: #b91c1c; }

.btn-ghost { background: none; border: 1px solid var(--gray-300); color: var(--gray-600); }
.btn-ghost:hover { background: var(--gray-50); }

/* ===== STEPS ===== */
.booking-layout { background: var(--gray-100); border-radius: 14px; box-shadow: var(--shadow-lg); padding: 32px; }

.steps {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 32px;
  gap: 0;
  flex-wrap: wrap;
  row-gap: 8px;
}

.step {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--gray-400);
  font-weight: 500;
  transition: color .2s;
}

.step span {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--gray-200);
  color: var(--gray-500);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
  transition: all .2s;
}

.step.active { color: var(--gray-900); }
.step.active span { background: var(--primary); color: #fff; }
.step.done span { background: var(--success); color: #fff; }
.step.done { color: var(--success); }

.step-line { flex: 1; min-width: 24px; height: 2px; background: var(--gray-200); margin: 0 6px; }

.booking-step h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 20px; color: var(--gray-800); }

.step-nav { display: flex; justify-content: flex-end; gap: 10px; margin-top: 24px; }

/* ===== SERVICES GRID ===== */
.services-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 14px; }

.service-card {
  border: 2px solid var(--gray-200);
  border-radius: 12px;
  padding: 20px;
  cursor: pointer;
  transition: all .2s;
}

.service-card:hover { border-color: var(--primary); background: var(--primary-light); }
.service-card.selected { border-color: var(--primary); background: var(--primary-light); }

.service-icon { font-size: 2rem; margin-bottom: 10px; }
.service-name { font-weight: 700; font-size: 0.95rem; color: var(--gray-900); margin-bottom: 4px; }
.service-duration { font-size: 0.8rem; color: var(--gray-500); margin-bottom: 6px; }
.service-price { font-size: 0.85rem; font-weight: 600; color: var(--success); }

/* ===== CALENDAR ===== */
.datetime-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }

.calendar-wrapper {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: 12px;
  padding: 16px;
}

.cal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.cal-header span { font-weight: 700; font-size: 1rem; color: var(--gray-800); }

.cal-nav {
  background: var(--gray-200);
  border: none;
  border-radius: 6px;
  width: 30px;
  height: 30px;
  font-size: 1.2rem;
  cursor: pointer;
  color: var(--gray-600);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background .15s;
}

.cal-nav:hover { background: var(--gray-300); }

.cal-weekdays {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  text-align: center;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--gray-400);
  margin-bottom: 6px;
}

.cal-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 2px; }

.cal-day {
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all .15s;
  color: var(--gray-700);
}

.cal-day:hover:not(.disabled):not(.empty) { background: var(--primary-light); color: var(--gray-900); }
.cal-day.today { font-weight: 700; background: var(--gray-100); }
.cal-day.selected { background: var(--primary); color: #fff; }
.cal-day.disabled, .cal-day.past { color: var(--gray-300); cursor: not-allowed; }
.cal-day.empty { cursor: default; }
.cal-day.has-booking { position: relative; }
.cal-day.has-booking::after {
  content: '';
  position: absolute;
  bottom: 3px;
  width: 4px;
  height: 4px;
  background: var(--primary);
  border-radius: 50%;
}

.slots-wrapper { }
.slots-wrapper h4 { font-size: 0.95rem; font-weight: 600; color: var(--gray-700); margin-bottom: 12px; }
.slots-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }

.slot-btn {
  padding: 8px 4px;
  border: 2px solid var(--gray-200);
  border-radius: 8px;
  background: var(--gray-100);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--gray-700);
  cursor: pointer;
  transition: all .15s;
  text-align: center;
}

.slot-btn:hover { border-color: var(--primary); color: var(--gray-900); }
.slot-btn.selected { background: var(--primary); border-color: var(--primary); color: #fff; }
.slot-btn.booked { background: var(--gray-100); color: var(--gray-300); border-color: var(--gray-200); cursor: not-allowed; text-decoration: line-through; }

.slots-empty { color: var(--gray-400); font-size: 0.9rem; text-align: center; padding: 20px 0; }

/* ===== FORM ===== */
.form { display: flex; flex-direction: column; gap: 16px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group.align-end { justify-content: flex-end; }
.form-group label { font-size: 0.85rem; font-weight: 600; color: var(--gray-700); }

input[type="text"], input[type="tel"], input[type="email"],
input[type="date"], input[type="time"], textarea, select {
  padding: 10px 14px;
  border: 1.5px solid var(--gray-300);
  border-radius: var(--radius);
  font-size: 0.9rem;
  color: var(--gray-800);
  background: var(--gray-100);
  transition: border .15s;
  width: 100%;
  font-family: inherit;
}

input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(19, 44, 59, .35);
}

textarea { resize: vertical; }

/* ===== SUMMARY CARD ===== */
.summary-card {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 20px;
}

.summary-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  border-bottom: 1px solid var(--gray-100);
  font-size: 0.9rem;
}

.summary-row:last-child { border-bottom: none; }
.summary-row span { color: var(--gray-500); }
.summary-row strong { color: var(--gray-900); }

/* ===== SUCCESS ===== */
.success-box { text-align: center; padding: 20px 0; }
.success-icon {
  width: 64px;
  height: 64px;
  background: var(--success);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin: 0 auto 16px;
}

.success-box h3 { font-size: 1.5rem; margin-bottom: 8px; color: var(--gray-900); }
.success-box > p { color: var(--gray-500); margin-bottom: 24px; }

/* ===== LOOKUP / MY APPTS ===== */
.lookup-box {
  background: var(--gray-100);
  border-radius: 12px;
  box-shadow: var(--shadow);
  padding: 24px;
  margin-bottom: 24px;
}

.appt-card {
  background: var(--gray-100);
  border-radius: 12px;
  box-shadow: var(--shadow);
  padding: 20px;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.appt-info { flex: 1; }
.appt-service { font-weight: 700; font-size: 1rem; color: var(--gray-900); margin-bottom: 4px; }
.appt-meta { font-size: 0.85rem; color: var(--gray-500); display: flex; gap: 12px; flex-wrap: wrap; }

.phone-cell {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.btn-call {
  background: var(--success);
  color: #fff;
  font-size: 0.75rem;
  padding: 4px 10px;
  text-decoration: none;
}

.btn-call:hover {
  background: #15803d;
}

.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
}

.badge-confirmed { background: var(--success-light); color: var(--success); }
.badge-cancelled { background: var(--danger-light); color: var(--danger); }
.badge-pending { background: var(--warning-light); color: var(--warning); }

/* ===== ADMIN ===== */
.admin-manual-box {
  background: var(--gray-100);
  border-radius: 12px;
  box-shadow: var(--shadow);
  padding: 20px;
  margin-bottom: 16px;
}

.manual-box-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.manual-box-head h3 {
  font-size: 1rem;
  color: var(--gray-900);
}

.manual-controls {
  display: flex;
  gap: 8px;
  align-items: center;
}

.manual-slots-table-wrap {
  border: 1px solid var(--gray-200);
  border-radius: 10px;
  overflow: hidden;
}

.manual-slots-table {
  width: 100%;
  border-collapse: collapse;
}

.manual-slots-table th,
.manual-slots-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--gray-200);
  text-align: left;
  font-size: 0.85rem;
  color: var(--gray-800);
}

.manual-slots-table th {
  color: var(--gray-500);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: .03em;
  background: var(--gray-50);
}

.manual-slots-table tr:last-child td {
  border-bottom: none;
}

.manual-name-input {
  width: 100%;
  min-width: 160px;
}

.manual-online-pill {
  display: inline-block;
  font-size: 0.75rem;
  color: #fff;
  background: var(--warning);
  border-radius: 999px;
  padding: 2px 8px;
}

.manual-row-locked {
  opacity: .7;
}

.mini-slots-wrap {
  margin-top: 10px;
}

.mini-slots-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 6px;
}

.mini-slot {
  border-radius: 8px;
  font-size: 0.76rem;
  font-weight: 700;
  text-align: center;
  padding: 6px 4px;
  border: 1px solid transparent;
}

.mini-slot.booked {
  background: #16a34a;
  color: #fff;
  border-color: #15803d;
}

.mini-slot.empty {
  background: var(--gray-300);
  color: var(--gray-900);
  border-color: var(--gray-400);
}

.admin-notify-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--gray-100);
  border-radius: 12px;
  box-shadow: var(--shadow);
  padding: 14px 20px;
  margin-bottom: 16px;
}

.btn-notify {
  background: var(--primary);
  color: #fff;
  font-size: 0.875rem;
  padding: 8px 16px;
}

.btn-notify:hover { background: var(--primary-dark); }

.notify-status {
  font-size: 0.85rem;
  color: var(--success);
  font-weight: 600;
}

.admin-filters {
  background: var(--gray-100);
  border-radius: 12px;
  box-shadow: var(--shadow);
  padding: 20px;
  margin-bottom: 24px;
}

.admin-stats {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 12px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--gray-100);
  border-radius: 12px;
  box-shadow: var(--shadow);
  padding: 20px;
  text-align: center;
}

.stat-value { font-size: 2rem; font-weight: 800; color: var(--gray-900); }
.stat-label { font-size: 0.8rem; color: var(--gray-500); margin-top: 4px; }

.admin-table-wrap {
  background: var(--gray-100);
  border-radius: 12px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

table { width: 100%; border-collapse: collapse; }
thead { background: var(--gray-50); }
th {
  padding: 12px 16px;
  text-align: left;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: .04em;
  border-bottom: 1px solid var(--gray-200);
}

td {
  padding: 12px 16px;
  font-size: 0.88rem;
  color: var(--gray-700);
  border-bottom: 1px solid var(--gray-100);
  vertical-align: middle;
}

tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--gray-50); }

/* ===== TOAST ===== */
.toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gray-900);
  color: #fff;
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  z-index: 999;
  box-shadow: var(--shadow-lg);
  transition: opacity .3s;
}

.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }

/* ===== FOOTER ===== */
footer {
  background: var(--gray-800);
  color: var(--gray-400);
  text-align: center;
  padding: 20px;
  font-size: 0.85rem;
}

/* ===== EMPTY STATE ===== */
.empty-state {
  text-align: center;
  padding: 48px 20px;
  color: var(--gray-400);
}

.empty-state .empty-icon { font-size: 3rem; margin-bottom: 12px; }
.empty-state p { font-size: 0.95rem; }

/* ===== RESPONSIVE ===== */
@media (max-width: 640px) {
  .header-inner { flex-direction: column; height: auto; padding: 12px 16px; gap: 8px; }
  .datetime-layout { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .booking-layout { padding: 20px 16px; }
  .steps {
    flex-direction: column;
    align-items: flex-start;
    margin-bottom: 20px;
    gap: 6px;
  }
  .step-line {
    width: 2px;
    min-width: 0;
    height: 16px;
    margin: 0 0 0 13px;
  }
  .slots-grid { grid-template-columns: repeat(4, 1fr); }
  .manual-controls { width: 100%; }
  .manual-controls input[type="date"] { flex: 1; }
  .manual-controls .btn { width: 100%; justify-content: center; }
  .manual-slots-table-wrap {
    border: none;
    background: transparent;
    overflow: visible;
  }
  .manual-slots-table thead { display: none; }
  .manual-slots-table,
  .manual-slots-table tbody,
  .manual-slots-table tr,
  .manual-slots-table td {
    display: block;
    width: 100%;
  }
  .manual-slots-table tr {
    background: var(--gray-100);
    border: 1px solid var(--gray-200);
    border-radius: 12px;
    margin-bottom: 10px;
    padding: 10px 12px;
  }
  .manual-slots-table td {
    border: none;
    border-bottom: 1px solid var(--gray-200);
    padding: 8px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    text-align: right;
  }
  .manual-slots-table td:last-child { border-bottom: none; }
  .manual-slots-table td::before {
    content: attr(data-label);
    color: var(--gray-500);
    font-weight: 700;
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: .02em;
    text-align: left;
  }
  .manual-name-input { min-width: 0; max-width: 58%; }
  .manual-save-btn { width: 100%; justify-content: center; }
  .mini-slots-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .admin-table-wrap { background: transparent; box-shadow: none; }
  .admin-table-wrap table { width: 100%; border-collapse: separate; border-spacing: 0 10px; }
  .admin-table-wrap thead { display: none; }
  .admin-table-wrap tr {
    display: block;
    background: var(--gray-100);
    border-radius: 12px;
    box-shadow: var(--shadow);
    padding: 10px 12px;
  }
  .admin-table-wrap td {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    border: none;
    padding: 8px 0;
    font-size: 0.86rem;
  }
  .admin-table-wrap td::before {
    content: attr(data-label);
    color: var(--gray-500);
    font-weight: 700;
    min-width: 88px;
  }
  .admin-table-wrap td[data-label="İşlem"] {
    flex-wrap: wrap;
    justify-content: flex-end;
  }
}