/* ============================================================
   Admin Panel CSS — ΑΠΣ Υπερίων
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
  --navy:       #0d1b2e;
  --navy-mid:   #142338;
  --navy-light: #1e3252;
  --clay:       #c8622a;
  --clay-light: #e07840;
  --gold:       #d4a843;
  --white:      #f5f0eb;
  --gray:       #8a9bb0;
  --gray-light: #c4cdd8;
  --border:     rgba(255,255,255,0.08);
  --danger:     #ef4444;
  --success:    #22c55e;
  --warning:    #f59e0b;
  --radius:     10px;
  --radius-sm:  6px;
  --sidebar-w:  240px;
  --font:       'Inter', -apple-system, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 15px; }
body { font-family: var(--font); background: var(--navy); color: var(--white); line-height: 1.5; }
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--navy); }
::-webkit-scrollbar-thumb { background: var(--navy-light); border-radius: 3px; }

/* ---- Layout ---- */
.admin-layout {
  display: flex;
  min-height: 100vh;
}

/* ---- Sidebar ---- */
.admin-sidebar {
  width: var(--sidebar-w);
  background: rgba(8,16,28,0.95);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
  overflow-y: auto;
  transition: transform 0.3s ease;
}
.sidebar-logo {
  padding: 1.5rem 1.25rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 10px;
}
.sidebar-logo-icon {
  width: 36px; height: 36px;
  background: var(--clay);
  border-radius: 8px;
  display: grid;
  place-items: center;
  font-size: 0.8rem;
  font-weight: 700;
  flex-shrink: 0;
}
.sidebar-logo-text strong { display: block; font-size: 0.85rem; font-weight: 700; }
.sidebar-logo-text span   { font-size: 0.68rem; color: var(--gray); text-transform: uppercase; letter-spacing: 0.08em; }

.sidebar-nav { padding: 1rem 0.75rem; flex: 1; }
.sidebar-section-label {
  font-size: 0.62rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--gray);
  padding: 0.75rem 0.5rem 0.4rem;
}
.sidebar-link {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.6rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--gray-light);
  transition: all 0.2s;
  margin-bottom: 2px;
}
.sidebar-link:hover { background: rgba(255,255,255,0.06); color: var(--white); }
.sidebar-link.active { background: rgba(200,98,42,0.15); color: var(--clay-light); }
.sidebar-link .icon { width: 18px; text-align: center; font-size: 1rem; }
.sidebar-footer {
  padding: 1rem 0.75rem;
  border-top: 1px solid var(--border);
}
.sidebar-footer a {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 0.82rem;
  color: var(--gray);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  transition: all 0.2s;
}
.sidebar-footer a:hover { color: var(--white); background: rgba(255,255,255,0.05); }

/* ---- Main content ---- */
.admin-main {
  margin-left: var(--sidebar-w);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}
.admin-topbar {
  height: 58px;
  background: rgba(8,16,28,0.8);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.75rem;
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(8px);
}
.topbar-title { font-size: 1rem; font-weight: 600; }
.topbar-actions { display: flex; align-items: center; gap: 0.75rem; }
.topbar-user {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.82rem;
  color: var(--gray-light);
}
.topbar-avatar {
  width: 30px; height: 30px;
  border-radius: 50%;
  background: var(--clay);
  display: grid;
  place-items: center;
  font-size: 0.75rem;
  font-weight: 700;
}
.admin-content { padding: 2rem 1.75rem; flex: 1; }

/* ---- Cards ---- */
.card {
  background: var(--navy-mid);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.card-header {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.card-title { font-size: 0.9rem; font-weight: 700; }
.card-body  { padding: 1.25rem; }

/* ---- Stats grid ---- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 1.75rem;
}
.stat-card {
  background: var(--navy-mid);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}
.stat-icon {
  width: 48px; height: 48px;
  border-radius: var(--radius-sm);
  display: grid;
  place-items: center;
  font-size: 1.4rem;
  flex-shrink: 0;
}
.stat-icon.clay  { background: rgba(200,98,42,0.15); }
.stat-icon.gold  { background: rgba(212,168,67,0.15); }
.stat-icon.blue  { background: rgba(59,130,246,0.15); }
.stat-icon.green { background: rgba(34,197,94,0.15); }
.stat-value { font-size: 1.6rem; font-weight: 700; line-height: 1; }
.stat-label { font-size: 0.72rem; color: var(--gray); text-transform: uppercase; letter-spacing: 0.08em; margin-top: 3px; }

/* ---- Table ---- */
.admin-table { width: 100%; border-collapse: collapse; }
.admin-table th {
  padding: 0.7rem 1rem;
  text-align: left;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--gray);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.admin-table td {
  padding: 0.75rem 1rem;
  font-size: 0.85rem;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  vertical-align: middle;
}
.admin-table tr:hover td { background: rgba(255,255,255,0.02); }
.admin-table tr:last-child td { border-bottom: none; }

/* ---- Form ---- */
.form-row { display: grid; gap: 1rem; margin-bottom: 1rem; }
.form-row-2 { grid-template-columns: 1fr 1fr; }
.form-row-3 { grid-template-columns: 1fr 1fr 1fr; }
.form-group { margin-bottom: 1rem; }
.form-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--gray-light);
  margin-bottom: 0.4rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.form-control {
  width: 100%;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  color: var(--white);
  border-radius: var(--radius-sm);
  padding: 0.6rem 0.85rem;
  font-size: 0.875rem;
  font-family: var(--font);
  outline: none;
  transition: border-color 0.2s;
}
.form-control:focus { border-color: rgba(200,98,42,0.5); background: rgba(255,255,255,0.06); }
.form-control::placeholder { color: var(--gray); }
textarea.form-control { resize: vertical; min-height: 100px; }
select.form-control option { background: var(--navy-mid); }
.form-hint { font-size: 0.72rem; color: var(--gray); margin-top: 0.3rem; }

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0.55rem 1.1rem;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
  font-family: var(--font);
}
.btn-primary  { background: var(--clay); color: var(--white); }
.btn-primary:hover  { background: var(--clay-light); }
.btn-danger   { background: rgba(239,68,68,0.15); color: #ef4444; border: 1px solid rgba(239,68,68,0.25); }
.btn-danger:hover   { background: #ef4444; color: var(--white); }
.btn-success  { background: rgba(34,197,94,0.15); color: #22c55e; border: 1px solid rgba(34,197,94,0.25); }
.btn-success:hover  { background: #22c55e; color: var(--white); }
.btn-outline  { background: transparent; color: var(--gray-light); border: 1px solid var(--border); }
.btn-outline:hover  { border-color: var(--clay); color: var(--clay-light); }
.btn-sm { padding: 0.35rem 0.75rem; font-size: 0.76rem; }
.btn-xs { padding: 0.22rem 0.55rem; font-size: 0.7rem; }
.btn-icon { padding: 0.4rem; border-radius: var(--radius-sm); }

/* ---- Badges ---- */
.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 100px;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.badge-clay    { background: rgba(200,98,42,0.15); color: var(--clay-light); }
.badge-gold    { background: rgba(212,168,67,0.15); color: var(--gold); }
.badge-success { background: rgba(34,197,94,0.15);  color: #22c55e; }
.badge-danger  { background: rgba(239,68,68,0.15);  color: #ef4444; }
.badge-gray    { background: rgba(138,155,176,0.15);color: var(--gray); }

/* ---- Alerts ---- */
.alert {
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  margin-bottom: 1rem;
  border: 1px solid;
}
.alert-success { background: rgba(34,197,94,0.1);  border-color: rgba(34,197,94,0.3);  color: #4ade80; }
.alert-danger  { background: rgba(239,68,68,0.1);  border-color: rgba(239,68,68,0.3);  color: #f87171; }
.alert-info    { background: rgba(59,130,246,0.1); border-color: rgba(59,130,246,0.3); color: #60a5fa; }

/* ---- Page header ---- */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 1rem;
}
.page-header-title { font-size: 1.3rem; font-weight: 700; }
.page-header-sub   { font-size: 0.8rem; color: var(--gray); margin-top: 2px; }

/* ---- Avatar in table ---- */
.table-avatar {
  width: 34px; height: 34px;
  border-radius: 50%;
  object-fit: cover;
  background: var(--navy-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--clay);
  flex-shrink: 0;
}
.table-player {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

/* ---- Score input ---- */
.score-pair {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}
.score-vs {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--gray);
  text-align: center;
}
.score-input {
  width: 70px;
  text-align: center;
  padding: 0.4rem 0.5rem;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--white);
  font-family: var(--font);
  font-size: 0.875rem;
}
.score-input:focus { border-color: rgba(200,98,42,0.5); outline: none; }

/* ---- Upload preview ---- */
.upload-preview {
  width: 80px; height: 80px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--border);
  display: block;
  margin-bottom: 0.5rem;
}
.upload-area {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s;
}
.upload-area:hover { border-color: rgba(200,98,42,0.4); }
.upload-area input[type=file] { display: none; }

/* ---- Mobile ---- */
.sidebar-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--white);
  cursor: pointer;
  padding: 4px;
  font-size: 1.3rem;
}
@media (max-width: 768px) {
  .admin-sidebar { transform: translateX(-100%); }
  .admin-sidebar.open { transform: translateX(0); }
  .admin-main { margin-left: 0; }
  .sidebar-toggle { display: block; }
  .form-row-2, .form-row-3 { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .admin-content { padding: 1.25rem; }
}

/* ---- Tabs ---- */
.tab-bar {
  display: flex;
  gap: 0.25rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1.5rem;
}
.tab-btn {
  padding: 0.6rem 1rem;
  font-size: 0.82rem;
  font-weight: 600;
  border: none;
  background: none;
  color: var(--gray);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all 0.2s;
  font-family: var(--font);
}
.tab-btn.active { color: var(--clay-light); border-bottom-color: var(--clay); }
.tab-btn:hover:not(.active) { color: var(--gray-light); }
.tab-pane { display: none; }
.tab-pane.active { display: block; }

/* ---- Login page ---- */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--navy);
  padding: 2rem;
}
.login-box {
  background: var(--navy-mid);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2.5rem;
  width: 100%;
  max-width: 380px;
}
.login-logo {
  text-align: center;
  margin-bottom: 2rem;
}
.login-logo .logo-icon {
  width: 56px; height: 56px;
  background: var(--clay);
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 1.1rem;
  font-weight: 700;
  margin: 0 auto 0.75rem;
}
.login-logo h1 { font-size: 1.1rem; font-weight: 700; }
.login-logo p  { font-size: 0.78rem; color: var(--gray); }