/* ─── VPS Billing System — Main Stylesheet ─────────────────────────── */

@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;600&family=Syne:wght@400;600;700;800&display=swap');

:root {
  --bg:        #0d0f14;
  --bg2:       #141720;
  --bg3:       #1c2030;
  --border:    #252a3a;
  --accent:    #4f8ef7;
  --accent2:   #7c4dff;
  --success:   #22c55e;
  --warning:   #f59e0b;
  --danger:    #ef4444;
  --secondary: #64748b;
  --text:      #e2e8f0;
  --text-dim:  #94a3b8;
  --radius:    8px;
  --shadow:    0 4px 24px rgba(0,0,0,0.4);
  --font-body: 'Syne', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

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

html { font-size: 15px; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ─── Layout ──────────────────────────────────────────────────────── */
.wrapper { display: flex; min-height: 100vh; }

/* ─── Sidebar ─────────────────────────────────────────────────────── */
.sidebar {
  width: 240px;
  background: var(--bg2);
  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;
}

.sidebar-logo {
  padding: 24px 20px 20px;
  border-bottom: 1px solid var(--border);
}

.sidebar-logo .logo-text {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.5px;
}

.sidebar-logo .logo-sub {
  font-size: 0.7rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
  margin-top: 2px;
}

.sidebar-nav { padding: 16px 0; flex: 1; }

.nav-section {
  padding: 8px 20px 4px;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--text-dim);
  text-transform: uppercase;
  font-family: var(--font-mono);
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  color: var(--text-dim);
  font-size: 0.875rem;
  font-weight: 600;
  transition: all 0.15s;
  border-left: 3px solid transparent;
}

.nav-link:hover, .nav-link.active {
  color: var(--text);
  background: var(--bg3);
  border-left-color: var(--accent);
  text-decoration: none;
}

.nav-link .icon { font-size: 1rem; width: 20px; text-align: center; }

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--border);
  font-size: 0.8rem;
  color: var(--text-dim);
}

.sidebar-footer .user-name { font-weight: 700; color: var(--text); }
.sidebar-footer .user-role {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--accent);
}

/* ─── Main Content ────────────────────────────────────────────────── */
.main { margin-left: 240px; flex: 1; display: flex; flex-direction: column; }

.topbar {
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  padding: 16px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 50;
}

.topbar h1 { font-size: 1.25rem; font-weight: 800; }
.topbar-actions { display: flex; align-items: center; gap: 12px; }

.content { padding: 32px; flex: 1; }

/* ─── Cards ───────────────────────────────────────────────────────── */
.card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 24px;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.card-title { font-size: 1rem; font-weight: 700; }

/* ─── Stats Grid ──────────────────────────────────────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 32px;
}

.stat-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  position: relative;
  overflow: hidden;
}

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

.stat-card.blue::before   { background: var(--accent); }
.stat-card.purple::before { background: var(--accent2); }
.stat-card.green::before  { background: var(--success); }
.stat-card.orange::before { background: var(--warning); }
.stat-card.red::before    { background: var(--danger); }

.stat-label { font-size: 0.75rem; color: var(--text-dim); font-weight: 600; letter-spacing: 1px; text-transform: uppercase; font-family: var(--font-mono); }
.stat-value { font-size: 1.8rem; font-weight: 800; margin-top: 8px; line-height: 1; }
.stat-sub   { font-size: 0.75rem; color: var(--text-dim); margin-top: 4px; }

/* ─── Tables ──────────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; }

table { width: 100%; border-collapse: collapse; font-size: 0.875rem; }

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

th {
  padding: 12px 16px;
  text-align: left;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text-dim);
  font-family: var(--font-mono);
  white-space: nowrap;
}

td { padding: 14px 16px; border-bottom: 1px solid var(--border); vertical-align: middle; }
tr:last-child td { border-bottom: none; }
tr:hover td { background: rgba(255,255,255,0.02); }

/* ─── Badges ──────────────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 0.7rem;
  font-weight: 700;
  font-family: var(--font-mono);
  letter-spacing: 0.5px;
}

.badge-success   { background: rgba(34,197,94,0.15);  color: var(--success); }
.badge-warning   { background: rgba(245,158,11,0.15); color: var(--warning); }
.badge-danger    { background: rgba(239,68,68,0.15);  color: var(--danger); }
.badge-secondary { background: rgba(100,116,139,0.15); color: var(--secondary); }
.badge-info      { background: rgba(79,142,247,0.15); color: var(--accent); }

/* ─── Buttons ─────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  border: none;
  transition: all 0.15s;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: #3a7de8; color: #fff; text-decoration: none; }

.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: #16a34a; color: #fff; text-decoration: none; }

.btn-danger  { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #dc2626; color: #fff; text-decoration: none; }

.btn-warning { background: var(--warning); color: #000; }
.btn-warning:hover { background: #d97706; color: #000; text-decoration: none; }

.btn-ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-dim);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); text-decoration: none; }

.btn-sm { padding: 5px 12px; font-size: 0.78rem; }
.btn-lg { padding: 12px 28px; font-size: 1rem; }

/* ─── Forms ───────────────────────────────────────────────────────── */
.form-group { margin-bottom: 20px; }

label {
  display: block;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-dim);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-family: var(--font-mono);
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="date"],
select,
textarea {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.9rem;
  transition: border-color 0.15s;
  outline: none;
}

input:focus, select:focus, textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(79,142,247,0.1);
}

textarea { resize: vertical; min-height: 100px; }

.form-row { display: grid; gap: 16px; }
.form-row.cols-2 { grid-template-columns: 1fr 1fr; }
.form-row.cols-3 { grid-template-columns: 1fr 1fr 1fr; }

.form-hint { font-size: 0.75rem; color: var(--text-dim); margin-top: 4px; }

/* ─── Alerts ──────────────────────────────────────────────────────── */
.alert {
  padding: 12px 18px;
  border-radius: var(--radius);
  margin-bottom: 16px;
  font-size: 0.875rem;
  font-weight: 600;
  border-left: 4px solid;
}

.alert-success { background: rgba(34,197,94,0.1);  border-color: var(--success); color: var(--success); }
.alert-error   { background: rgba(239,68,68,0.1);  border-color: var(--danger);  color: var(--danger); }
.alert-warning { background: rgba(245,158,11,0.1); border-color: var(--warning); color: var(--warning); }
.alert-info    { background: rgba(79,142,247,0.1); border-color: var(--accent);  color: var(--accent); }

/* ─── Login Page ──────────────────────────────────────────────────── */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  background-image:
    radial-gradient(ellipse at 20% 20%, rgba(79,142,247,0.08) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 80%, rgba(124,77,255,0.06) 0%, transparent 60%);
}

.login-box {
  width: 100%;
  max-width: 420px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 40px;
  box-shadow: var(--shadow);
}

.login-logo {
  text-align: center;
  margin-bottom: 32px;
}

.login-logo h1 {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.5px;
}

.login-logo p {
  color: var(--text-dim);
  font-size: 0.8rem;
  margin-top: 4px;
  font-family: var(--font-mono);
}

/* ─── Search & Filter Bar ─────────────────────────────────────────── */
.filter-bar {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
  align-items: center;
}

.filter-bar input,
.filter-bar select {
  width: auto;
  flex: 1;
  min-width: 160px;
}

/* ─── Pagination ──────────────────────────────────────────────────── */
.pagination {
  display: flex;
  gap: 6px;
  margin-top: 20px;
  justify-content: center;
}

.page-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  border-radius: var(--radius);
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 0.85rem;
  font-weight: 700;
  text-decoration: none;
  transition: all 0.15s;
}

.page-btn:hover, .page-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  text-decoration: none;
}

/* ─── File Upload ─────────────────────────────────────────────────── */
.upload-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 40px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
}

.upload-zone:hover { border-color: var(--accent); background: rgba(79,142,247,0.03); }
.upload-zone .upload-icon { font-size: 2rem; color: var(--text-dim); }
.upload-zone p { color: var(--text-dim); margin-top: 8px; font-size: 0.875rem; }

/* ─── Responsive ──────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .sidebar { transform: translateX(-100%); transition: transform 0.25s; }
  .sidebar.open { transform: translateX(0); }
  .main { margin-left: 0; }
  .content { padding: 20px; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .form-row.cols-2, .form-row.cols-3 { grid-template-columns: 1fr; }
}

/* ─── Utility ─────────────────────────────────────────────────────── */
.text-right  { text-align: right; }
.text-center { text-align: center; }
.text-dim    { color: var(--text-dim); }
.text-mono   { font-family: var(--font-mono); }
.text-sm     { font-size: 0.8rem; }
.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-0 { margin-bottom: 0; }
.d-flex { display: flex; }
.align-center { align-items: center; }
.gap-1 { gap: 8px; }
.gap-2 { gap: 16px; }
.w-100 { width: 100%; }
.actions { display: flex; gap: 6px; flex-wrap: wrap; }