/* ═══════════════════════════════════════════════════════════════════════════
   ADWA VPS — CLEAN MINIMALIST DESIGN SYSTEM (main.css)
   ═══════════════════════════════════════════════════════════════════════════ */

:root {
  /* ─── Neutral Architecture Palette (Clean White Default) ─── */
  --bg-canvas: #FFFFFF;
  --bg-surface: #F8FAFC;
  --bg-surface-raised: #FFFFFF;
  --bg-surface-hover: #F1F5F9;
  --bg-input: #FFFFFF;
  --bg-modal: #FFFFFF;

  /* ─── Typography & Contrast ─── */
  --text-primary: #0F172A;
  --text-secondary: #475569;
  --text-muted: #64748B;
  --text-inverse: #FFFFFF;
  --text-brand: #0F172A;

  /* ─── Crisp Clean Borders & Dividers ─── */
  --border-subtle: #E2E8F0;
  --border-default: #CBD5E1;
  --border-strong: #94A3B8;
  --border-focus: #0F172A;

  /* ─── Neutral Minimalist Status ─── */
  --status-online: #334155;
  --status-online-subtle: #F1F5F9;
  --status-warning: #475569;
  --status-warning-subtle: #F8FAFC;
  --status-error: #DC2626;
  --status-error-subtle: #FEF2F2;
  --status-info: #0F172A;

  /* ─── Typography Stacks ─── */
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-mono: 'JetBrains Mono', Consolas, 'Courier New', monospace;

  /* ─── Geometry & Spacing ─── */
  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-pill: 9999px;

  --nav-height: 64px;
  --max-width: 1200px;

  /* ─── Clean Subtle Shadows ─── */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.03);
}

/* ─── Dark Mode Tokens ───────────────────────────────────────────────────── */
[data-theme="dark"] {
  --bg-canvas: #090A0F;
  --bg-surface: #11131A;
  --bg-surface-raised: #161922;
  --bg-surface-hover: #1E222E;
  --bg-input: #0D0F14;
  --bg-modal: #11131A;

  --text-primary: #F8FAFC;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  --text-inverse: #090A0F;
  --text-brand: #F8FAFC;

  --border-subtle: #1E222E;
  --border-default: #2A3040;
  --border-strong: #3F475E;
  --border-focus: #F8FAFC;

  --status-online: #94A3B8;
  --status-online-subtle: #161922;
  --status-warning: #CBD5E1;
  --status-warning-subtle: #1E222E;
  --status-error: #EF4444;
  --status-error-subtle: rgba(239, 68, 68, 0.12);
  --status-info: #F8FAFC;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.6), 0 4px 6px -2px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .btn-primary {
  background-color: #F8FAFC;
  color: #090A0F;
  border-color: #F8FAFC;
}
[data-theme="dark"] .btn-primary:hover {
  background-color: #E2E8F0;
  border-color: #E2E8F0;
}

[data-theme="dark"] .btn-secondary {
  background-color: #161922;
  color: #F8FAFC;
  border-color: #2A3040;
}
[data-theme="dark"] .btn-secondary:hover {
  background-color: #1E222E;
  border-color: #3F475E;
}

[data-theme="dark"] .theme-toggle-btn {
  border-color: #2A3040;
  color: #CBD5E1;
}
[data-theme="dark"] .theme-toggle-btn:hover {
  background-color: #1E222E;
  color: #FFFFFF;
}

/* ─── Adaptive Brand Icon (Light / Dark) ─────────────────────────────────── */
.brand-icon-bg {
  fill: var(--text-primary);
  transition: fill 0.2s ease;
}
.brand-icon-fg {
  stroke: var(--bg-canvas);
  transition: stroke 0.2s ease;
}
.brand-icon-inner {
  stroke: var(--border-default);
  transition: stroke 0.2s ease;
}

[data-theme="dark"] .brand-icon-bg {
  fill: #F8FAFC;
}
[data-theme="dark"] .brand-icon-fg {
  stroke: #090A0F;
}
[data-theme="dark"] .brand-icon-inner {
  stroke: #64748B;
}

.theme-toggle-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background-color: transparent;
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.15s ease;
  font-size: 0.95rem;
}
.theme-toggle-btn:hover {
  background-color: var(--bg-surface-hover);
  color: var(--text-primary);
  border-color: var(--border-default);
}

/* ─── Smooth Theme Transition ────────────────────────────────────────────── */
body, .navbar, .card, .droplet-card, .app-card, .region-card, .stat-box, .modal, .chat-drawer, input, select, textarea {
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

/* ─── Reset & Base ───────────────────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ─── Typography Utilities ───────────────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-primary);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 1.85rem; }
h3 { font-size: 1.35rem; }
h4 { font-size: 1.1rem; }
h5 { font-size: 0.95rem; }

p {
  color: var(--text-secondary);
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.15s ease;
}

.mono {
  font-family: var(--font-mono);
}

.text-muted { color: var(--text-muted); }
.text-secondary { color: var(--text-secondary); }
.text-brand { color: var(--text-brand); font-weight: 700; }
.text-danger { color: var(--status-error); }

/* ─── Layout Containers ──────────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section-pad {
  padding: 5rem 0;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 600px;
  line-height: 1.6;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

/* ─── Buttons ────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-sans);
  font-size: 0.88rem;
  font-weight: 600;
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
  user-select: none;
  text-decoration: none;
}

.btn-primary {
  background-color: #0F172A;
  color: #FFFFFF;
  border-color: #0F172A;
}
.btn-primary:hover {
  background-color: #1E293B;
  border-color: #1E293B;
}

.btn-secondary {
  background-color: #FFFFFF;
  color: var(--text-primary);
  border: 1px solid var(--border-default);
}
.btn-secondary:hover {
  background-color: var(--bg-surface);
  border-color: var(--border-strong);
}

.btn-ghost {
  background-color: transparent;
  color: var(--text-secondary);
  border-color: transparent;
}
.btn-ghost:hover {
  color: var(--text-primary);
  background-color: var(--bg-surface);
}

.btn-danger {
  background-color: var(--status-error-subtle);
  color: var(--status-error);
  border: 1px solid #FECACA;
}
.btn-danger:hover {
  background-color: var(--status-error);
  color: #FFFFFF;
}

.btn-sm {
  padding: 0.45rem 0.85rem;
  font-size: 0.82rem;
}
.btn-lg {
  padding: 0.85rem 1.65rem;
  font-size: 1rem;
}
.btn-full {
  width: 100%;
}

/* ─── Cards & Surfaces ───────────────────────────────────────────────────── */
.card {
  background-color: var(--bg-surface-raised);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  transition: border-color 0.15s ease;
}

.card:hover {
  border-color: var(--border-default);
}

/* ─── Badges ─────────────────────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  background-color: var(--bg-surface);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
}

/* ─── Form Inputs ────────────────────────────────────────────────────────── */
.fg {
  margin-bottom: 1.15rem;
}

.fg label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.4rem;
}

.fg input,
.fg select,
.fg textarea {
  width: 100%;
  padding: 0.65rem 0.85rem;
  background-color: var(--bg-input);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.15s ease;
}

.fg input:focus,
.fg select:focus,
.fg textarea:focus {
  border-color: var(--border-focus);
}

.fg-helper {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.35rem;
  display: block;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

@media (max-width: 640px) {
  .form-row {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }
}

/* ─── Data Tables ────────────────────────────────────────────────────────── */
.data-table-wrap {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background-color: var(--bg-surface-raised);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.86rem;
  min-width: 580px;
}

.data-table th {
  padding: 0.75rem 1rem;
  background-color: var(--bg-surface);
  color: var(--text-secondary);
  font-weight: 600;
  border-bottom: 1px solid var(--border-subtle);
  white-space: nowrap;
}

.data-table td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-primary);
  vertical-align: middle;
}

.data-table tbody tr:hover {
  background-color: var(--bg-surface);
}

/* ─── Modals ─────────────────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(15, 23, 42, 0.45);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  padding: 1rem;
}

[data-theme="dark"] .modal-overlay {
  background-color: rgba(0, 0, 0, 0.75);
}

.modal-overlay.open {
  display: flex;
}

.modal {
  background-color: var(--bg-modal);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  width: min(520px, calc(100vw - 2rem));
  max-height: 90vh;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  box-shadow: var(--shadow-lg);
}

.modal-head {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-head h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
}

.modal-head p {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
}

.modal-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.1rem;
  cursor: pointer;
  padding: 0.25rem;
  line-height: 1;
}
.modal-close:hover {
  color: var(--text-primary);
}

.modal-body {
  padding: 1.5rem;
}

/* ─── Toast Notifications ────────────────────────────────────────────────── */
.toast {
  position: fixed;
  top: 1.5rem;
  right: 1.5rem;
  background-color: var(--text-primary);
  color: var(--text-inverse);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.65rem;
  box-shadow: var(--shadow-lg);
  z-index: 99999;
  transform: translateY(-20px);
  opacity: 0;
  transition: all 0.2s ease;
  pointer-events: none;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}