@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  --bg: #f5f5f7;
  --bg-card: #ffffff;
  --bg-sidebar: #111827;
  --bg-topbar: #ffffff;

  --text: #111827;
  --text-light: #6b7280;
  --text-inverse: #ffffff;

  --border: #e5e7eb;

  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --danger: #ef4444;

  --shadow: 0 2px 6px rgba(0,0,0,0.08);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 12px;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;

  --font-s: 13px;
  --font-m: 15px;
  --font-l: 18px;
  --font-xl: 24px;
  --font-xxl: 32px;
}

[data-theme="dark"] {
  --bg: #111827;
  --bg-card: #1f2937;
  --bg-sidebar: #0f172a;
  --bg-topbar: #1f2937;

  --text: #e5e7eb;
  --text-light: #9ca3af;
  --text-inverse: #ffffff;

  --border: #374151;

  --primary: #3b82f6;
  --primary-hover: #2563eb;

  --shadow: 0 2px 6px rgba(0,0,0,0.4);
}

body {
  margin: 0;
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  transition: background 0.25s ease, color 0.25s ease;
  opacity: 0;
  animation: fadeIn 0.4s ease forwards;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

h1, h2, h3 {
  margin-top: 0;
}

/* Sidebar */
.sidebar {
  width: 220px;
  background: var(--bg-sidebar);
  color: var(--text-inverse);
  height: 100vh;
  padding: 20px;
  position: fixed;
  top: 0;
  left: 0;
}
.sidebar h2 {
  margin-top: 0;
  font-weight: 600;
}
.sidebar ul {
  list-style: none;
  padding: 0;
  margin-top: 30px;
}
.sidebar li {
  margin: 16px 0;
  cursor: pointer;
  opacity: 0.9;
  transition: opacity 0.2s ease;
}
.sidebar li:hover {
  opacity: 1;
}
.sidebar button {
  margin-top: 40px;
  width: 100%;
  padding: 10px;
  background: var(--danger);
  border: none;
  color: white;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

/* Main */
.main {
  margin-left: 240px;
  padding: 30px;
}

/* Topbar */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--bg-topbar);
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: var(--shadow);
}
.topbar.scrolled {
  box-shadow: 0 4px 12px rgba(0,0,0,0.12);
  transition: box-shadow 0.25s ease;
}

/* Cards */
.card {
  background: var(--bg-card);
  padding: 20px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  transition: background 0.25s ease, color 0.25s ease, transform 0.2s ease, box-shadow 0.2s ease;
}
.card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 14px rgba(0,0,0,0.12);
}

/* KPI cards */
.card-kpi {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.card-kpi-title {
  font-size: var(--font-s);
  color: var(--text-light);
}
.card-kpi-value {
  font-size: var(--font-xxl);
  font-weight: 700;
}

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow);
}
th, td {
  padding: 14px;
  border-bottom: 1px solid var(--border);
}
th {
  font-weight: 600;
}
tr:hover {
  background: rgba(37,99,235,0.08);
  transition: background 0.2s ease;
}
[data-theme="dark"] tr:hover {
  background: rgba(59,130,246,0.15);
}

/* Inputs */
input, select, textarea {
  width: 100%;
  padding: 12px;
  margin-top: 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  transition: background 0.25s ease, color 0.25s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(37,99,235,0.25);
}

/* Buttons */
.btn {
  border: none;
  border-radius: var(--radius-sm);
  padding: 8px 14px;
  font-size: var(--font-m);
  cursor: pointer;
  transition: background 0.2s ease, transform 0.1s ease;
}
.btn-primary {
  background: var(--primary);
  color: var(--text-inverse);
}
.btn-primary:hover {
  background: var(--primary-hover);
}
.btn-danger {
  background: var(--danger);
  color: white;
}
.btn-ghost {
  background: transparent;
  color: var(--text-light);
}
.btn:active {
  transform: scale(0.97);
}

/* Utilities */
.flex { display: flex; }
.flex-between { display:flex; justify-content:space-between; align-items:center; }
.flex-center { display:flex; justify-content:center; align-items:center; }
.gap-4 { gap: var(--space-4); }
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.text-muted { color: var(--text-light); font-size: var(--font-s); }
.text-xl { font-size: var(--font-xl); font-weight: 600; }

/* Modals */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.45);
  display: none;
  justify-content: center;
  align-items: center;
  z-index: 100;
  backdrop-filter: blur(4px);
}
.modal-overlay.show {
  display: flex;
}
.modal {
  background: var(--bg-card);
  padding: 30px;
  border-radius: var(--radius-lg);
  width: 420px;
  box-shadow: var(--shadow);
  transform: scale(0.85);
  opacity: 0;
  transition: opacity 0.25s ease, transform 0.25s ease;
}
.modal.show {
  transform: scale(1);
  opacity: 1;
}
@keyframes shake {
  0% { transform: translateX(0); }
  25% { transform: translateX(-4px); }
  50% { transform: translateX(4px); }
  75% { transform: translateX(-4px); }
  100% { transform: translateX(0); }
}
.modal.shake {
  animation: shake 0.25s ease;
}

/* Kanban */
.kanban {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  padding-bottom: 20px;
}
.kanban-column {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  width: 260px;
  min-width: 260px;
  padding: 15px;
  box-shadow: var(--shadow);
}
.kanban-column h3 {
  margin-top: 0;
  margin-bottom: 15px;
}
.deal-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px;
  margin-bottom: 12px;
  cursor: grab;
  transition: background 0.25s ease, transform 0.15s ease, box-shadow 0.15s ease;
}
.deal-card:hover {
  background: rgba(0,0,0,0.05);
}
[data-theme="dark"] .deal-card:hover {
  background: rgba(255,255,255,0.05);
}
.deal-card:active {
  transform: scale(1.03);
  box-shadow: 0 6px 14px rgba(0,0,0,0.15);
}
.drag-over {
  background: rgba(37,99,235,0.15) !important;
}

/* Notes & timeline */
#notes-list li,
#timeline-list li {
  list-style: none;
}

/* Auth pages */
.auth-body {
  background: var(--bg);
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}
.auth-card {
  background: var(--bg-card);
  padding: 32px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  width: 360px;
  text-align: center;
}
.auth-card h1 {
  margin-bottom: 8px;
}
.auth-card a {
  color: var(--primary);
  text-decoration: none;
}
.auth-card a:hover {
  text-decoration: underline;
}