/* ============================================================
   FitTrack Pro — Ana Stil Dosyası
   Koyu tema, neon yeşil, mobil uyumlu
   ============================================================ */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ============================================================
   CSS DEĞIŞKENLERI
   ============================================================ */
:root {
  --bg-base:       #0f172a;
  --bg-surface:    #1e293b;
  --bg-card:       #1e293b;
  --bg-card2:      #243047;
  --bg-input:      #162032;
  --border:        #2d3f55;
  --border-light:  #354a63;

  --primary:       #10b981;
  --primary-dark:  #059669;
  --primary-glow:  rgba(16, 185, 129, 0.25);
  --primary-soft:  rgba(16, 185, 129, 0.1);

  --accent:        #6366f1;
  --accent-soft:   rgba(99, 102, 241, 0.1);

  --text-main:     #e2e8f0;
  --text-muted:    #94a3b8;
  --text-dim:      #64748b;
  --text-heading:  #f1f5f9;

  --success:       #10b981;
  --warning:       #f59e0b;
  --danger:        #ef4444;
  --info:          #3b82f6;

  --success-soft:  rgba(16,185,129,0.12);
  --warning-soft:  rgba(245,158,11,0.12);
  --danger-soft:   rgba(239,68,68,0.12);
  --info-soft:     rgba(59,130,246,0.12);

  --sidebar-w:     260px;
  --header-h:      64px;
  --radius:        12px;
  --radius-sm:     8px;
  --radius-lg:     16px;
  --shadow:        0 4px 24px rgba(0,0,0,0.4);
  --shadow-sm:     0 2px 8px rgba(0,0,0,0.3);
  --transition:    0.2s ease;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg-base);
  color: var(--text-main);
  font-size: 14px;
  line-height: 1.6;
  min-height: 100vh;
}

a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary-dark); }

img { max-width: 100%; display: block; }

ul, ol { list-style: none; }

/* ============================================================
   LAYOUT — Sidebar + Main
   ============================================================ */
.layout {
  display: flex;
  min-height: 100vh;
}

/* ── SIDEBAR ── */
.sidebar {
  width: var(--sidebar-w);
  background: var(--bg-surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 200;
  overflow-y: auto;
  transition: transform var(--transition);
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 20px;
  border-bottom: 1px solid var(--border);
  text-decoration: none;
}

.sidebar-logo-icon {
  width: 38px; height: 38px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.sidebar-logo-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-heading);
  letter-spacing: -0.4px;
}

.sidebar-logo-text span {
  color: var(--primary);
}

.sidebar-nav {
  padding: 16px 12px;
  flex: 1;
}

.sidebar-section {
  margin-bottom: 24px;
}

.sidebar-section-title {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--text-dim);
  padding: 0 10px;
  margin-bottom: 8px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 13.5px;
  font-weight: 500;
  transition: all var(--transition);
  margin-bottom: 2px;
  position: relative;
}

.nav-item:hover {
  background: var(--primary-soft);
  color: var(--primary);
}

.nav-item.active {
  background: var(--primary-soft);
  color: var(--primary);
}

.nav-item.active::before {
  content: '';
  position: absolute;
  left: 0; top: 6px; bottom: 6px;
  width: 3px;
  background: var(--primary);
  border-radius: 0 3px 3px 0;
}

.nav-item .icon {
  font-size: 17px;
  width: 22px;
  text-align: center;
  flex-shrink: 0;
}

.nav-badge {
  margin-left: auto;
  background: var(--danger);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  padding: 1px 6px;
  border-radius: 20px;
}

.sidebar-footer {
  padding: 16px;
  border-top: 1px solid var(--border);
}

.sidebar-user {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px;
  border-radius: var(--radius-sm);
  background: var(--bg-base);
}

.sidebar-user-avatar {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex; align-items: center; justify-content: center;
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}

.sidebar-user-info .name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-heading);
}

.sidebar-user-info .role {
  font-size: 11px;
  color: var(--text-dim);
  text-transform: capitalize;
}

/* ── MAIN CONTENT ── */
.main {
  flex: 1;
  margin-left: var(--sidebar-w);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── TOPBAR ── */
.topbar {
  height: var(--header-h);
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 28px;
  position: sticky;
  top: 0;
  z-index: 100;
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.hamburger {
  display: none;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 22px;
  cursor: pointer;
  padding: 4px;
}

.page-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-heading);
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.topbar-clock {
  font-size: 13px;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

/* ── PAGE CONTENT ── */
.content {
  padding: 28px;
  flex: 1;
}

/* ============================================================
   KARTLAR
   ============================================================ */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.card-header {
  padding: 18px 22px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.card-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-heading);
  display: flex;
  align-items: center;
  gap: 8px;
}

.card-body {
  padding: 22px;
}

/* ── STAT CARDS ── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 18px;
  margin-bottom: 28px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  transition: transform var(--transition), box-shadow var(--transition);
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
}

.stat-card.primary::before  { background: var(--primary); }
.stat-card.accent::before   { background: var(--accent); }
.stat-card.warning::before  { background: var(--warning); }
.stat-card.danger::before   { background: var(--danger); }
.stat-card.info::before     { background: var(--info); }

.stat-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

.stat-icon {
  width: 48px; height: 48px;
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}

.stat-card.primary  .stat-icon { background: var(--primary-soft); color: var(--primary); }
.stat-card.accent   .stat-icon { background: var(--accent-soft);  color: var(--accent); }
.stat-card.warning  .stat-icon { background: var(--warning-soft); color: var(--warning); }
.stat-card.danger   .stat-icon { background: var(--danger-soft);  color: var(--danger); }
.stat-card.info     .stat-icon { background: var(--info-soft);    color: var(--info); }

.stat-data .label {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 4px;
  font-weight: 500;
}

.stat-data .value {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-heading);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.stat-data .sub {
  font-size: 11px;
  color: var(--text-dim);
  margin-top: 4px;
}

/* ============================================================
   TABLO
   ============================================================ */
.table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

table {
  width: 100%;
  border-collapse: collapse;
}

thead tr {
  background: var(--bg-base);
  border-bottom: 2px solid var(--border);
}

thead th {
  padding: 12px 16px;
  text-align: left;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-dim);
  white-space: nowrap;
}

tbody tr {
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
}

tbody tr:last-child { border-bottom: none; }

tbody tr:hover { background: rgba(255,255,255,0.03); }

tbody td {
  padding: 13px 16px;
  font-size: 13.5px;
  color: var(--text-main);
  vertical-align: middle;
}

/* ============================================================
   BADGES
   ============================================================ */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
}

.badge-success  { background: var(--success-soft); color: var(--success); }
.badge-warning  { background: var(--warning-soft); color: var(--warning); }
.badge-danger   { background: var(--danger-soft);  color: var(--danger); }
.badge-info     { background: var(--info-soft);    color: var(--info); }
.badge-secondary { background: rgba(148,163,184,0.12); color: var(--text-muted); }
.badge-accent   { background: var(--accent-soft);  color: var(--accent); }

/* ============================================================
   BUTONLAR
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 9px 18px;
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  font-family: inherit;
  text-decoration: none;
  white-space: nowrap;
}

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

.btn-primary {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
.btn-primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  color: #fff;
  box-shadow: 0 4px 20px var(--primary-glow);
}

.btn-outline {
  background: transparent;
  color: var(--text-main);
  border-color: var(--border-light);
}
.btn-outline:hover {
  background: var(--bg-card2);
  color: var(--text-heading);
}

.btn-danger {
  background: var(--danger-soft);
  color: var(--danger);
  border-color: transparent;
}
.btn-danger:hover {
  background: var(--danger);
  color: #fff;
}

.btn-info {
  background: var(--info-soft);
  color: var(--info);
  border-color: transparent;
}
.btn-info:hover {
  background: var(--info);
  color: #fff;
}

.btn-warning {
  background: var(--warning-soft);
  color: var(--warning);
  border-color: transparent;
}
.btn-warning:hover {
  background: var(--warning);
  color: #fff;
}

.btn-sm {
  padding: 5px 12px;
  font-size: 12px;
}

.btn-lg {
  padding: 13px 28px;
  font-size: 15px;
}

.btn-block {
  width: 100%;
}

/* ============================================================
   FORMLAR
   ============================================================ */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 7px;
}

.form-label.required::after {
  content: ' *';
  color: var(--danger);
}

.form-control {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-family: inherit;
  font-size: 14px;
  padding: 10px 14px;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.form-control::placeholder { color: var(--text-dim); }

.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

select.form-control option {
  background: var(--bg-input);
  color: var(--text-main);
}

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

.form-control.is-invalid {
  border-color: var(--danger);
  box-shadow: 0 0 0 3px rgba(239,68,68,0.15);
}

.form-error {
  font-size: 12px;
  color: var(--danger);
  margin-top: 5px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.form-hint {
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 5px;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

/* ============================================================
   ALERT (FLASH MESAJLARI)
   ============================================================ */
.alert {
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
  animation: slideDown 0.3s ease;
}

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

.alert-success { background: var(--success-soft); color: var(--success); border: 1px solid rgba(16,185,129,0.2); }
.alert-danger  { background: var(--danger-soft);  color: var(--danger);  border: 1px solid rgba(239,68,68,0.2); }
.alert-warning { background: var(--warning-soft); color: var(--warning); border: 1px solid rgba(245,158,11,0.2); }
.alert-info    { background: var(--info-soft);    color: var(--info);    border: 1px solid rgba(59,130,246,0.2); }

/* ============================================================
   SAYFALAMA
   ============================================================ */
.pagination {
  display: flex;
  align-items: center;
  gap: 6px;
  justify-content: center;
  padding: 16px;
  flex-wrap: wrap;
}

.page-btn {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  border: 1px solid var(--border);
  transition: all var(--transition);
  text-decoration: none;
}

.page-btn:hover, .page-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.page-btn.disabled {
  opacity: 0.4;
  pointer-events: none;
}

/* ============================================================
   ARAMA & FİLTRE
   ============================================================ */
.search-bar {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}

.search-input-wrap {
  position: relative;
  flex: 1;
  min-width: 200px;
}

.search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-dim);
  font-size: 15px;
}

.search-input-wrap .form-control {
  padding-left: 38px;
}

/* ============================================================
   MODAL
   ============================================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: all;
}

.modal {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 520px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
  transform: scale(0.95) translateY(10px);
  transition: transform var(--transition);
}

.modal-overlay.open .modal {
  transform: scale(1) translateY(0);
}

.modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-heading);
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 20px;
  cursor: pointer;
  transition: color var(--transition);
}
.modal-close:hover { color: var(--text-main); }

.modal-body  { padding: 24px; }
.modal-footer { padding: 16px 24px; border-top: 1px solid var(--border); display: flex; gap: 10px; justify-content: flex-end; }

/* ============================================================
   CHART CONTAINER
   ============================================================ */
.chart-wrap {
  position: relative;
  height: 220px;
}

/* ============================================================
   AVATAR
   ============================================================ */
.avatar {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex; align-items: center; justify-content: center;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
  font-size: 15px;
}

.avatar-sm { width: 32px; height: 32px; font-size: 12px; }
.avatar-lg { width: 56px; height: 56px; font-size: 22px; }

/* ============================================================
   GİRİŞ SAYFASI
   ============================================================ */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-base);
  background-image:
    radial-gradient(ellipse at 20% 50%, rgba(16,185,129,0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(99,102,241,0.06) 0%, transparent 50%);
  padding: 20px;
}

.login-box {
  width: 100%;
  max-width: 420px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 48px 40px;
  box-shadow: var(--shadow);
}

.login-logo {
  text-align: center;
  margin-bottom: 36px;
}

.login-logo-icon {
  width: 60px; height: 60px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  font-size: 28px;
  margin: 0 auto 16px;
}

.login-logo h1 {
  font-size: 24px;
  font-weight: 800;
  color: var(--text-heading);
}

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

.password-toggle {
  position: relative;
}

.password-toggle .toggle-btn {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  font-size: 16px;
  transition: color var(--transition);
}

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

/* ============================================================
   VKİ METER
   ============================================================ */
.vki-meter {
  background: var(--bg-base);
  border-radius: var(--radius);
  overflow: hidden;
  height: 8px;
  margin: 10px 0;
  position: relative;
}

.vki-fill {
  height: 100%;
  border-radius: var(--radius);
  transition: width 0.8s ease;
}

.vki-sinif-zaiyf   { background: var(--info); }
.vki-sinif-normal  { background: var(--success); }
.vki-sinif-fazla   { background: var(--warning); }
.vki-sinif-obez    { background: var(--danger); }

/* ============================================================
   PROGRESS BAR
   ============================================================ */
.progress {
  background: var(--bg-base);
  border-radius: 20px;
  height: 8px;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  border-radius: 20px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transition: width 0.8s ease;
}

/* ============================================================
   EMPTY STATE
   ============================================================ */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-dim);
}

.empty-state .icon {
  font-size: 52px;
  margin-bottom: 16px;
  opacity: 0.4;
}

.empty-state h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.empty-state p {
  font-size: 13px;
  margin-bottom: 20px;
}

/* ============================================================
   BREADCRUMB
   ============================================================ */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12.5px;
  color: var(--text-dim);
  margin-bottom: 20px;
}

.breadcrumb a {
  color: var(--text-muted);
  transition: color var(--transition);
}
.breadcrumb a:hover { color: var(--primary); }

.breadcrumb .sep { color: var(--text-dim); }
.breadcrumb .current { color: var(--text-main); }

/* ============================================================
   UTILITY
   ============================================================ */
.d-flex      { display: flex; }
.align-center { align-items: center; }
.gap-8       { gap: 8px; }
.gap-12      { gap: 12px; }
.mt-4        { margin-top: 4px; }
.mt-8        { margin-top: 8px; }
.mt-16       { margin-top: 16px; }
.mt-24       { margin-top: 24px; }
.mb-16       { margin-bottom: 16px; }
.mb-24       { margin-bottom: 24px; }
.text-right  { text-align: right; }
.text-center { text-align: center; }
.text-muted  { color: var(--text-muted); }
.text-danger { color: var(--danger); }
.text-success{ color: var(--success); }
.fw-600      { font-weight: 600; }
.fw-700      { font-weight: 700; }

/* ============================================================
   SCROLLBAR
   ============================================================ */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-base); }
::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-dim); }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
  .sidebar {
    transform: translateX(-100%);
  }
  .sidebar.open {
    transform: translateX(0);
  }
  .main {
    margin-left: 0;
  }
  .hamburger {
    display: block;
  }
  .content {
    padding: 16px;
  }
  .topbar {
    padding: 0 16px;
  }
  .topbar-clock {
    display: none;
  }
}

@media (max-width: 600px) {
  .stats-grid {
    grid-template-columns: 1fr 1fr;
  }
  .form-row {
    grid-template-columns: 1fr;
  }
  .stat-data .value {
    font-size: 22px;
  }
  .login-box {
    padding: 32px 24px;
  }
  .search-bar {
    flex-direction: column;
  }
  .search-input-wrap {
    width: 100%;
  }
}

@media (max-width: 380px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================================
   OVERLAY (sidebar backdrop)
   ============================================================ */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 150;
}

.sidebar-overlay.show {
  display: block;
}