/* ═══════════════════════════════════════════════
   SELFMADE AI — WORKSPACE DESIGN SYSTEM
   ═══════════════════════════════════════════════ */

:root {
  --bg: #09090B;
  --bg-card: rgba(255,255,255,0.025);
  --bg-card-hover: rgba(255,255,255,0.04);
  --bg-input: rgba(255,255,255,0.03);
  --accent: #10b981;
  --accent-gold: #34d399;
  --accent-blue: #38bdf8;
  --accent-purple: #a78bfa;
  --accent-yellow: #fbbf24;
  --accent-pink: #f472b6;
  --accent-red: #ef4444;
  --text: #F4F4F5;
  --text-muted: rgba(255,255,255,0.45);
  --text-dim: rgba(255,255,255,0.25);
  --border: rgba(255,255,255,0.06);
  --border-hover: rgba(255,255,255,0.1);
  --border-accent: rgba(16,185,129,0.15);
  --radius: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --sans: 'DM Sans', system-ui, -apple-system, sans-serif;
  --serif: 'Cormorant Garamond', Georgia, serif;
  --mono: 'JetBrains Mono', 'SF Mono', monospace;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --sidebar-w: 260px;
  --sidebar-collapsed: 64px;
  --topbar-h: 56px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--sans); background: var(--bg); color: var(--text);
  -webkit-font-smoothing: antialiased; line-height: 1.6; overflow-x: hidden;
}
::selection { background: rgba(16,185,129,0.25); color: #fff; }
a { color: inherit; text-decoration: none; }
button { font-family: var(--sans); cursor: pointer; border: none; background: none; color: var(--text); }
input, textarea, select {
  font-family: var(--sans); background: var(--bg-input); color: var(--text);
  border: 1px solid var(--border); border-radius: var(--radius); padding: 10px 14px;
  font-size: 14px; outline: none; transition: border-color 0.25s;
  width: 100%;
}
input:focus, textarea:focus, select:focus { border-color: var(--accent); }
textarea { resize: vertical; min-height: 100px; }

/* ═══ LAYOUT ═══ */
.app { display: flex; min-height: 100vh; }
.app-content {
  flex: 1; margin-left: var(--sidebar-w);
  transition: margin-left 0.4s var(--ease);
  min-height: 100vh;
}
.app.sidebar-collapsed .app-content { margin-left: var(--sidebar-collapsed); }
.page {
  padding: 32px 40px;
  max-width: 1400px;
  animation: pageIn 0.4s var(--ease);
}
@keyframes pageIn { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }

/* ═══ SIDEBAR ═══ */
.sidebar {
  position: fixed; left: 0; top: 0; bottom: 0;
  width: var(--sidebar-w); z-index: 100;
  background: rgba(9,9,11,0.95);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  transition: width 0.4s var(--ease);
  overflow: hidden;
}
.app.sidebar-collapsed .sidebar { width: var(--sidebar-collapsed); }

/* Sidebar header */
.sb-header {
  padding: 20px 20px 16px; display: flex; align-items: center; justify-content: space-between;
  border-bottom: 1px solid var(--border);
}
.sb-logo {
  display: flex; align-items: center; gap: 10px;
  font-size: 16px; font-weight: 700; white-space: nowrap;
}
.sb-logo-icon {
  width: 32px; height: 32px; border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), var(--accent-gold));
  display: grid; place-items: center; flex-shrink: 0;
}
.sb-logo-icon svg { width: 16px; height: 16px; stroke: #000; fill: none; stroke-width: 2; }
.sb-toggle {
  width: 28px; height: 28px; border-radius: 8px; display: grid; place-items: center;
  color: var(--text-muted); transition: all 0.25s;
}
.sb-toggle:hover { background: rgba(255,255,255,0.05); color: var(--text); }
.sb-toggle svg { width: 16px; height: 16px; stroke: currentColor; fill: none; stroke-width: 1.5; }

/* Sidebar navigation */
.sb-nav { flex: 1; overflow-y: auto; padding: 12px 10px; scrollbar-width: none; }
.sb-nav::-webkit-scrollbar { display: none; }
.sb-group { margin-bottom: 8px; }
.sb-group-title {
  font-size: 10px; font-weight: 700; letter-spacing: 0.15em; text-transform: uppercase;
  color: var(--text-dim); padding: 8px 10px 6px; white-space: nowrap;
}
.sb-link {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 10px; border-radius: 10px; font-size: 13px; font-weight: 500;
  color: var(--text-muted); transition: all 0.2s; white-space: nowrap;
  position: relative;
}
.sb-link:hover { background: rgba(255,255,255,0.04); color: var(--text); }
.sb-link.active {
  background: rgba(16,185,129,0.08); color: var(--accent);
}
.sb-link.active::before {
  content: ''; position: absolute; left: 0; top: 50%; transform: translateY(-50%);
  width: 3px; height: 16px; border-radius: 0 3px 3px 0;
  background: var(--accent);
}
.sb-icon {
  width: 20px; height: 20px; flex-shrink: 0; display: grid; place-items: center;
}
.sb-icon svg { width: 16px; height: 16px; stroke: currentColor; fill: none; stroke-width: 1.5; }
.sb-badge {
  margin-left: auto; font-size: 10px; font-weight: 700; padding: 2px 7px;
  border-radius: 6px; background: rgba(16,185,129,0.1); color: var(--accent);
}
.sb-divider { height: 1px; background: var(--border); margin: 8px 10px; }

/* Sidebar footer */
.sb-footer {
  padding: 16px; border-top: 1px solid var(--border);
  display: flex; align-items: center; gap: 10px;
}
.sb-avatar {
  width: 32px; height: 32px; border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), var(--accent-gold));
  display: grid; place-items: center; font-size: 12px; font-weight: 700; color: #000;
  flex-shrink: 0;
}
.sb-user-info { overflow: hidden; white-space: nowrap; }
.sb-user-name { font-size: 13px; font-weight: 600; }
.sb-user-plan { font-size: 11px; color: var(--text-muted); }
.sb-logout {
  margin-left: auto; width: 28px; height: 28px; border-radius: 8px;
  display: grid; place-items: center; color: var(--text-dim); transition: all 0.25s;
}
.sb-logout:hover { background: rgba(239,68,68,0.1); color: var(--accent-red); }
.sb-logout svg { width: 14px; height: 14px; stroke: currentColor; fill: none; stroke-width: 1.5; }

/* ═══ TOPBAR ═══ */
.topbar {
  height: var(--topbar-h); display: flex; align-items: center; justify-content: space-between;
  padding: 0 40px; border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 50;
  background: rgba(9,9,11,0.85); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
}
.topbar-left { display: flex; align-items: center; gap: 16px; }
.topbar-title { font-size: 15px; font-weight: 600; }
.topbar-breadcrumb { font-size: 12px; color: var(--text-muted); display: flex; align-items: center; gap: 6px; }
.topbar-breadcrumb span { color: var(--text-dim); }
.topbar-right { display: flex; align-items: center; gap: 12px; }
.topbar-btn {
  padding: 7px 16px; border-radius: 10px; font-size: 13px; font-weight: 600;
  transition: all 0.25s;
}
.topbar-btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-gold));
  color: #000;
}
.topbar-btn-primary:hover { box-shadow: 0 4px 20px rgba(16,185,129,0.25); transform: translateY(-1px); }
.topbar-btn-ghost {
  border: 1px solid var(--border); color: var(--text-muted);
}
.topbar-btn-ghost:hover { border-color: var(--border-hover); color: var(--text); }

/* ═══ CARDS ═══ */
.card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 24px;
  transition: all 0.35s var(--ease);
}
.card:hover { border-color: var(--border-hover); }
.card-title { font-size: 13px; font-weight: 600; color: var(--text); margin-bottom: 4px; }
.card-subtitle { font-size: 12px; color: var(--text-muted); }

/* ═══ KPI CARDS ═══ */
.kpi-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 32px; }
.kpi {
  padding: 24px; background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); transition: all 0.35s var(--ease);
}
.kpi:hover { border-color: var(--border-hover); transform: translateY(-2px); }
.kpi-label { font-size: 11px; font-weight: 600; color: var(--text-muted); letter-spacing: 0.05em; text-transform: uppercase; margin-bottom: 8px; }
.kpi-value { font-family: var(--mono); font-size: 28px; font-weight: 700; letter-spacing: -0.03em; line-height: 1; }
.kpi-value--accent { background: linear-gradient(135deg, var(--accent), var(--accent-gold)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.kpi-change { font-size: 11px; margin-top: 6px; display: flex; align-items: center; gap: 4px; }
.kpi-change--up { color: var(--accent); }
.kpi-change--down { color: var(--accent-red); }

/* ═══ TABLES ═══ */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th {
  font-size: 11px; font-weight: 600; color: var(--text-dim); letter-spacing: 0.08em;
  text-transform: uppercase; text-align: left; padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}
td { padding: 14px 16px; border-bottom: 1px solid rgba(255,255,255,0.02); font-size: 14px; color: var(--text-muted); }
tr { transition: background 0.2s; }
tr:hover { background: rgba(255,255,255,0.015); }

/* ═══ BADGES ═══ */
.badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 3px 10px; border-radius: 6px; font-size: 11px; font-weight: 600;
}
.badge--live { background: rgba(16,185,129,0.1); color: var(--accent); }
.badge--draft { background: rgba(255,255,255,0.05); color: var(--text-muted); }
.badge--paid { background: rgba(16,185,129,0.1); color: var(--accent); }
.badge--pending { background: rgba(251,191,36,0.1); color: var(--accent-yellow); }
.badge--overdue { background: rgba(239,68,68,0.1); color: var(--accent-red); }
.badge--cancelled { background: rgba(255,255,255,0.05); color: var(--text-dim); }

/* ═══ BUTTONS ═══ */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 20px; border-radius: var(--radius); font-size: 14px; font-weight: 600;
  transition: all 0.3s var(--ease);
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-gold)); color: #000;
}
.btn-primary:hover { box-shadow: 0 6px 24px rgba(16,185,129,0.25); transform: translateY(-1px); }
.btn-secondary {
  background: var(--bg-card); border: 1px solid var(--border); color: var(--text-muted);
}
.btn-secondary:hover { border-color: var(--border-hover); color: var(--text); }
.btn-danger { background: rgba(239,68,68,0.1); color: var(--accent-red); }
.btn-danger:hover { background: rgba(239,68,68,0.15); }
.btn-sm { padding: 6px 14px; font-size: 12px; }
.btn-icon {
  width: 36px; height: 36px; border-radius: 10px; display: grid; place-items: center;
  background: var(--bg-card); border: 1px solid var(--border); color: var(--text-muted);
  transition: all 0.25s;
}
.btn-icon:hover { border-color: var(--border-hover); color: var(--text); }
.btn-icon svg { width: 16px; height: 16px; stroke: currentColor; fill: none; stroke-width: 1.5; }

/* ═══ GRID LAYOUTS ═══ */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }

/* ═══ PAGE HEADER ═══ */
.page-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 32px; }
.page-title { font-family: var(--serif); font-size: 28px; font-weight: 700; color: var(--text); }
.page-subtitle { font-size: 14px; color: var(--text-muted); margin-top: 4px; }

/* ═══ EMPTY STATE ═══ */
.empty {
  text-align: center; padding: 80px 24px; border: 1px dashed var(--border);
  border-radius: var(--radius-xl);
}
.empty-icon {
  width: 56px; height: 56px; margin: 0 auto 16px; border-radius: 16px;
  background: rgba(16,185,129,0.06); border: 1px solid rgba(16,185,129,0.1);
  display: grid; place-items: center;
}
.empty-icon svg { width: 24px; height: 24px; stroke: var(--accent); fill: none; stroke-width: 1.5; }
.empty-title { font-size: 16px; font-weight: 600; margin-bottom: 4px; }
.empty-text { font-size: 13px; color: var(--text-muted); margin-bottom: 20px; }

/* ═══ TABS ═══ */
.tabs { display: flex; gap: 0; border-bottom: 1px solid var(--border); margin-bottom: 24px; }
.tab {
  padding: 10px 20px; font-size: 13px; font-weight: 500; color: var(--text-muted);
  border-bottom: 2px solid transparent; transition: all 0.25s; cursor: pointer;
  margin-bottom: -1px;
}
.tab:hover { color: var(--text); }
.tab.active { color: var(--accent); border-bottom-color: var(--accent); }

/* ═══ MODAL ═══ */
.modal-overlay {
  position: fixed; inset: 0; z-index: 9999;
  background: rgba(0,0,0,0); backdrop-filter: blur(0);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden; transition: all 0.4s var(--ease);
}
.modal-overlay.open {
  opacity: 1; visibility: visible;
  background: rgba(0,0,0,0.6); backdrop-filter: blur(12px);
}
.modal {
  background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius-xl);
  width: 90%; max-width: 560px; max-height: 90vh; overflow-y: auto;
  padding: 32px; transform: translateY(20px) scale(0.96);
  transition: transform 0.4s var(--ease);
}
.modal-overlay.open .modal { transform: translateY(0) scale(1); }
.modal-title { font-size: 18px; font-weight: 700; margin-bottom: 16px; }

/* ═══ TOAST ═══ */
.toast {
  position: fixed; bottom: 24px; right: 24px; z-index: 99999;
  padding: 14px 24px; border-radius: var(--radius);
  background: rgba(16,185,129,0.15); border: 1px solid rgba(16,185,129,0.2);
  color: var(--accent); font-size: 13px; font-weight: 600;
  transform: translateY(100px); opacity: 0; transition: all 0.4s var(--ease);
}
.toast.show { transform: translateY(0); opacity: 1; }

/* ═══ ANIMATIONS ═══ */
.fade-in { opacity: 0; transform: translateY(16px); animation: fadeIn 0.5s var(--ease) forwards; }
.fi-1 { animation-delay: 0.05s; } .fi-2 { animation-delay: 0.1s; }
.fi-3 { animation-delay: 0.15s; } .fi-4 { animation-delay: 0.2s; }
.fi-5 { animation-delay: 0.25s; } .fi-6 { animation-delay: 0.3s; }
@keyframes fadeIn { to { opacity: 1; transform: translateY(0); } }

/* ═══ RESPONSIVE ═══ */
@media (max-width: 1200px) {
  .kpi-grid { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); width: 280px; }
  .app.sidebar-open .sidebar { transform: translateX(0); }
  .app-content { margin-left: 0 !important; }
  .page { padding: 20px 16px; }
  .topbar { padding: 0 16px; }
  .kpi-grid { grid-template-columns: 1fr; }
  .grid-3, .grid-4 { grid-template-columns: 1fr; }
}