@import url("https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600&family=Syne:wght@600;700;800&display=swap");

:root {
  --bg: #060608;
  --sidebar: #09090c;
  --surface: #0d0d11;
  --surface-2: #111116;
  --surface-hover: #15151c;
  --border: #1a1a22;
  --border-accent: #2d3a52;
  --border-active: #4a6fa5;
  --accent: #5a7ab0;
  --accent-soft: rgba(74, 111, 165, 0.1);
  --text: #f0f0f4;
  --text-secondary: #9a9aad;
  --text-muted: #5e5e70;
  --success: #6ee7a0;
  --warning: #f0c060;
  --danger: #f08080;
  --sidebar-w: 252px;
  --radius: 10px;
  --radius-sm: 7px;
}

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

body {
  font-family: "Poppins", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  font-size: 14px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Login */
.login-screen { min-height: 100vh; display: grid; place-items: center; padding: 24px; }
.login-wrap { width: 100%; max-width: 400px; }
.login-box { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 40px 36px; }
.login-brand { font-family: "Syne", sans-serif; font-size: 1.75rem; font-weight: 800; letter-spacing: 0.12em; margin-bottom: 6px; display: flex; align-items: center; gap: 12px; }
.brand-lockup { display: flex; align-items: center; gap: 10px; }
.brand-icon { width: 26px; height: 26px; flex-shrink: 0; }
.login-brand .brand-icon { width: 32px; height: 32px; }
.sidebar-brand .brand-icon { width: 28px; height: 28px; }
.login-sub { color: var(--text-muted); font-size: 0.875rem; margin-bottom: 32px; }
.login-hint { margin-top: 20px; padding-top: 20px; border-top: 1px solid var(--border); font-size: 0.78rem; color: var(--text-muted); text-align: center; }

/* Layout */
.app { display: flex; min-height: 100vh; }
.sidebar { width: var(--sidebar-w); background: var(--sidebar); border-right: 1px solid var(--border); display: flex; flex-direction: column; position: fixed; inset: 0 auto 0 0; z-index: 50; }
.sidebar-brand { padding: 28px 22px 24px; border-bottom: 1px solid var(--border); }
.sidebar-brand h1 { font-family: "Syne", sans-serif; font-size: 1.15rem; font-weight: 800; letter-spacing: 0.14em; line-height: 1; }
.sidebar-brand p { font-size: 0.72rem; font-weight: 500; color: var(--text-muted); margin-top: 4px; letter-spacing: 0.06em; text-transform: uppercase; }
.sidebar-nav { flex: 1; padding: 16px 12px; overflow-y: auto; }
.nav-item { display: flex; align-items: center; gap: 10px; width: 100%; padding: 11px 14px; border: 1px solid transparent; border-radius: var(--radius-sm); background: none; color: var(--text-secondary); font-family: "Poppins", sans-serif; font-size: 0.875rem; font-weight: 500; cursor: pointer; text-align: left; transition: background 0.15s, border-color 0.15s, color 0.15s; margin-bottom: 3px; }
.nav-icon { width: 18px; height: 18px; flex-shrink: 0; stroke: currentColor; fill: none; stroke-width: 1.65; stroke-linecap: round; stroke-linejoin: round; opacity: 0.7; }
.nav-icon rect, .nav-icon circle { fill: none; }
.nav-item:hover { background: var(--surface-hover); color: var(--text); border-color: var(--border); }
.nav-item:hover .nav-icon { opacity: 1; }
.nav-item.active { background: var(--accent-soft); color: var(--text); border-color: var(--border-accent); box-shadow: inset 3px 0 0 var(--accent); }
.nav-item.active .nav-icon { opacity: 1; color: var(--accent); stroke: var(--accent); }
.sidebar-footer { padding: 18px 22px; border-top: 1px solid var(--border); }
.status-dot { width: 7px; height: 7px; border-radius: 50%; margin-right: 8px; flex-shrink: 0; display: inline-block; }
.status-dot.on { background: var(--success); }
.status-dot.off { background: var(--danger); }

.main { flex: 1; margin-left: var(--sidebar-w); min-height: 100vh; display: flex; flex-direction: column; }
.topbar { padding: 18px 36px; border-bottom: 1px solid var(--border); display: flex; align-items: center; gap: 20px; background: var(--sidebar); flex-shrink: 0; }
.topbar h2 { font-family: "Syne", sans-serif; font-size: 1.2rem; font-weight: 700; letter-spacing: -0.02em; flex-shrink: 0; min-width: 0; }
.menu-btn {
  display: none; flex-shrink: 0; width: 38px; height: 38px; padding: 0;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--surface-2); color: var(--text-secondary); cursor: pointer;
}
.menu-btn svg { width: 18px; height: 18px; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; }
.menu-btn:hover { border-color: var(--border-accent); color: var(--text); }

.sidebar-backdrop {
  display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.55); z-index: 49;
}
.sidebar-backdrop.show { display: block; }

.alert-banner {
  padding: 12px 16px; margin-bottom: 18px; border-radius: var(--radius-sm);
  border: 1px solid #4a3030; background: rgba(240,128,128,0.08);
  color: var(--danger); font-size: 0.85rem; font-weight: 500;
}
.topbar-meta { font-size: 0.78rem; color: var(--text-muted); font-weight: 500; margin-left: auto; flex-shrink: 0; }
.topbar-search-wrap { position: relative; flex: 1; max-width: 340px; }
.content { padding: 32px 36px 48px; flex: 1; }
.page { display: none; }
.page.active { display: block; }

/* Search */
.search-input {
  width: 100%; padding: 9px 14px; background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--radius-sm); color: var(--text); font-family: "Poppins", sans-serif; font-size: 0.875rem;
}
.search-input:focus { outline: none; border-color: var(--border-accent); }
.search-row { display: flex; gap: 12px; margin-bottom: 18px; }
.search-row .search-input { flex: 1; }
.search-hint { font-size: 0.75rem; color: var(--text-muted); margin-top: 14px; }
.search-dropdown {
  position: absolute; top: calc(100% + 6px); left: 0; right: 0;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm);
  max-height: 280px; overflow-y: auto; z-index: 100; box-shadow: 0 4px 16px rgba(0,0,0,0.35);
}
.search-item {
  padding: 11px 14px; cursor: pointer; border-bottom: 1px solid var(--border);
  display: flex; justify-content: space-between; align-items: center; gap: 10px;
}
.search-item:last-child { border-bottom: none; }
.search-item:hover { background: var(--surface-hover); }
.search-item-name { font-weight: 600; color: var(--text); }
.search-item-meta { font-size: 0.75rem; color: var(--text-muted); }

/* Client grid */
.client-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 12px; }
.client-card {
  background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 16px; cursor: pointer; transition: border-color 0.15s;
}
.client-card:hover { border-color: var(--border-accent); }
.client-card.busy { opacity: 0.55; cursor: not-allowed; }
.client-card .c-name { font-family: "Syne", sans-serif; font-weight: 700; font-size: 0.95rem; margin-bottom: 8px; }
.client-card .c-meta { font-size: 0.78rem; color: var(--text-muted); line-height: 1.6; }

/* Stats & panels */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 14px; margin-bottom: 28px; }
.stat-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px 20px; }
.stat-card .val { font-family: "Syne", sans-serif; font-size: 1.75rem; font-weight: 800; letter-spacing: -0.03em; line-height: 1; color: var(--text); }
.stat-card .lbl { font-size: 0.72rem; font-weight: 500; color: var(--text-muted); margin-top: 8px; text-transform: uppercase; letter-spacing: 0.07em; }
.panel { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 26px 28px; margin-bottom: 18px; }
.panel-head { font-family: "Syne", sans-serif; font-size: 0.78rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em; color: var(--text-secondary); margin-bottom: 22px; padding-bottom: 14px; border-bottom: 1px solid var(--border); }
.panel-desc { font-size: 0.82rem; color: var(--text-muted); margin-bottom: 20px; line-height: 1.65; }
.grid-4 { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; }

.station { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 20px; transition: border-color 0.15s; }
.station.live { border-color: var(--border-accent); background: var(--surface-2); }
.station .name { font-family: "Syne", sans-serif; font-weight: 700; font-size: 1rem; margin-bottom: 8px; }
.station .meta { font-size: 0.8rem; color: var(--text-muted); margin-bottom: 16px; line-height: 1.7; }
.station .time { font-family: "Syne", sans-serif; font-size: 1.5rem; font-weight: 700; font-variant-numeric: tabular-nums; margin-bottom: 14px; }
.station .time.time-warn { color: var(--warning); }
.station .time.time-critical { color: var(--danger); }
.station .res-badge { font-size: 0.72rem; color: var(--accent); margin-top: 6px; line-height: 1.5; }

.live-time { font-variant-numeric: tabular-nums; }

/* Forms */
.form-grid { display: grid; gap: 18px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 640px) { .form-row { grid-template-columns: 1fr; } .topbar { flex-wrap: wrap; } .topbar-search-wrap { max-width: 100%; order: 3; width: 100%; } }
label { display: block; font-size: 0.78rem; font-weight: 600; color: var(--text-secondary); margin-bottom: 7px; letter-spacing: 0.02em; }
input, select { width: 100%; padding: 10px 14px; background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius-sm); color: var(--text); font-family: "Poppins", sans-serif; font-size: 0.875rem; transition: border-color 0.15s; }
input:focus, select:focus { outline: none; border-color: var(--border-accent); }
.mono-input { font-family: ui-monospace, "Cascadia Code", Consolas, monospace; font-size: 0.8125rem; letter-spacing: 0.04em; }
.device-status-row { display: flex; align-items: center; gap: 8px; font-size: 0.82rem; color: var(--text-secondary); padding: 10px 14px; background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius-sm); }
code { font-size: 0.82em; padding: 2px 6px; border: 1px solid var(--border); border-radius: 4px; color: var(--text-secondary); font-family: ui-monospace, Consolas, monospace; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 9px 18px; border-radius: var(--radius-sm); font-family: "Poppins", sans-serif; font-size: 0.8125rem; font-weight: 600; cursor: pointer; transition: background 0.15s, border-color 0.15s; border: 1px solid var(--border); background: var(--surface-2); color: var(--text); }
.btn:hover { background: var(--surface-hover); border-color: var(--border-accent); }
.btn:disabled { opacity: 0.35; cursor: not-allowed; }
.btn-primary { background: var(--bg); border-color: var(--border-active); }
.btn-block { width: 100%; }
.btn-danger { border-color: #4a2020; color: var(--danger); }
.btn-danger:hover { background: #120808; border-color: var(--danger); }
.btn-sm { padding: 6px 12px; font-size: 0.75rem; }
.btn-row { display: flex; flex-wrap: wrap; gap: 8px; }

.payment-toggle { display: flex; gap: 10px; }
.payment-toggle .btn { flex: 1; padding: 12px; }
.payment-toggle .btn.active { border-color: var(--border-active); background: var(--surface-hover); }

.duration-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { padding: 8px 14px; border-radius: var(--radius-sm); border: 1px solid var(--border); background: var(--bg); color: var(--text-secondary); font-family: "Poppins", sans-serif; font-size: 0.8125rem; font-weight: 500; cursor: pointer; transition: border-color 0.15s, color 0.15s, background 0.15s; }
.chip:hover { border-color: var(--border-accent); color: var(--text); }
.chip.active { border-color: var(--border-active); color: var(--text); background: var(--surface-hover); }

.price-preview { margin-top: 10px; font-size: 0.85rem; color: var(--text-secondary); }
.saved-banner { padding: 12px 14px; border: 1px solid var(--border-accent); border-radius: var(--radius-sm); font-size: 0.85rem; color: var(--warning); background: rgba(240,192,96,0.06); }

/* Modals */
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.72); display: none; align-items: center; justify-content: center; z-index: 200; padding: 20px; }
.modal-overlay.show { display: flex; }
.modal-box { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; width: min(480px, 100%); max-height: 90vh; overflow-y: auto; }
.modal-sm { width: min(400px, 100%); }
.modal-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 22px; padding-bottom: 14px; border-bottom: 1px solid var(--border); }
.modal-head h3 { font-family: "Syne", sans-serif; font-size: 1.05rem; font-weight: 700; }
.modal-close { background: none; border: none; color: var(--text-muted); font-size: 1.4rem; cursor: pointer; line-height: 1; padding: 0 4px; }
.modal-close:hover { color: var(--text); }
.modal-text { font-size: 0.95rem; color: var(--text); line-height: 1.6; }
.modal-sub { font-size: 0.85rem; color: var(--text-muted); margin-top: 10px; }

/* Tables */
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius-sm); }
table { width: 100%; border-collapse: collapse; font-size: 0.8125rem; }
thead th { text-align: left; padding: 12px 16px; font-weight: 600; font-size: 0.7rem; color: var(--text-muted); background: var(--bg); border-bottom: 1px solid var(--border); text-transform: uppercase; letter-spacing: 0.07em; }
tbody td { padding: 13px 16px; border-bottom: 1px solid var(--border); color: var(--text-secondary); }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover td { background: var(--surface-hover); }

.tag { display: inline-block; padding: 3px 9px; border-radius: 5px; font-size: 0.7rem; font-weight: 600; border: 1px solid var(--border); }
.tag.pending { border-color: #4a3a10; color: var(--warning); }
.tag.paid { border-color: #1a4030; color: var(--success); }
.tag.on { border-color: #1a4030; color: var(--success); }
.tag.off { color: var(--text-muted); }
.text-warn { color: var(--warning); font-weight: 600; }
.text-ok { color: var(--success); font-weight: 600; }
.hidden { display: none !important; }

.toast { position: fixed; bottom: 28px; right: 28px; padding: 13px 20px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm); font-size: 0.85rem; font-weight: 500; z-index: 300; transform: translateY(60px); opacity: 0; transition: 0.22s ease; }
.toast.show { transform: none; opacity: 1; }
.toast.error { border-color: #4a2020; color: var(--danger); }

.pick-user-list { display: flex; flex-direction: column; gap: 8px; max-height: 320px; overflow-y: auto; }
.pick-user-item {
  padding: 12px 14px; border: 1px solid var(--border); border-radius: var(--radius-sm);
  cursor: pointer; transition: border-color 0.15s; background: var(--bg);
}
.pick-user-item:hover { border-color: var(--border-accent); }
.pick-user-item.disabled { opacity: 0.45; cursor: not-allowed; }
.pick-user-item .pu-name { font-weight: 600; color: var(--text); margin-bottom: 4px; }
.pick-user-item .pu-meta { font-size: 0.78rem; color: var(--text-muted); }
.pick-user-item.admin-item { border-color: var(--border-accent); }

.discount-tiers { display: flex; flex-direction: column; gap: 10px; }
.discount-tier-row {
  display: grid; grid-template-columns: 1fr 100px 36px; gap: 10px; align-items: end;
}
.discount-tier-row label { margin-bottom: 0; font-size: 0.72rem; }
.discount-tier-row .tier-field label { margin-bottom: 7px; }
.discount-tier-remove {
  width: 36px; height: 36px; padding: 0; border-radius: var(--radius-sm);
  color: var(--text-muted); font-size: 1.1rem; line-height: 1;
}
.discount-tier-remove:hover { color: var(--danger); border-color: #4a2020; }
.discount-tiers-empty { font-size: 0.82rem; color: var(--text-muted); padding: 8px 0; }

.site-copy { margin-top: 16px; font-size: 0.72rem; color: var(--text-muted); text-align: center; }
.site-footer {
  padding: 14px 36px 20px;
  font-size: 0.72rem;
  color: var(--text-muted);
  text-align: center;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}

@media (max-width: 768px) {
  .menu-btn { display: inline-flex; align-items: center; justify-content: center; }
  .sidebar { transform: translateX(-100%); transition: transform 0.22s ease; z-index: 50; }
  .sidebar.open { transform: translateX(0); }
  .main { margin-left: 0; min-width: 0; }
  .content { padding: 16px 14px 32px; }
  .topbar {
    padding: 12px 14px; gap: 10px; flex-wrap: wrap;
  }
  .topbar h2 {
    font-size: 1rem; flex: 1; min-width: 0;
    overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  }
  .topbar-meta { display: none; }
  .topbar-search-wrap { order: 4; flex: 1 1 100%; max-width: none; }
  .panel { padding: 18px 16px; }
  .panel-head { margin-bottom: 16px; padding-bottom: 10px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; margin-bottom: 20px; }
  .stat-card { padding: 16px 14px; }
  .stat-card .val { font-size: 1.35rem; }
  .grid-4 { grid-template-columns: 1fr; }
  .client-grid { grid-template-columns: 1fr; }
  .search-row { flex-direction: column; }
  .search-row .btn { width: 100%; }
  .station .time { font-size: 1.25rem; }
  .station .btn-row .btn { flex: 1 1 calc(50% - 4px); min-width: 0; }
  .btn-row .btn { flex: 1 1 auto; }
  .payment-toggle { flex-direction: column; }
  .modal-overlay { padding: 12px; align-items: flex-end; }
  .modal-box { padding: 20px 18px; max-height: 92vh; border-radius: var(--radius) var(--radius) 0 0; width: 100%; }
  .modal-sm { width: 100%; }
  .discount-tier-row { grid-template-columns: 1fr; }
  .discount-tier-remove { width: 100%; height: 36px; }
  thead th, tbody td { padding: 10px 12px; font-size: 0.75rem; }
  .table-wrap { -webkit-overflow-scrolling: touch; }
  .login-box { padding: 28px 22px; }
  .site-footer { padding: 12px 14px 16px; }
  .toast { left: 14px; right: 14px; bottom: 14px; }
}

@media (max-width: 400px) {
  .stats-grid { grid-template-columns: 1fr; }
  .duration-chips .chip { flex: 1 1 calc(50% - 4px); text-align: center; }
}