/* ═══════════════════════════════════════
   Prudens Finance — Base Stylesheet
   Phase 2
═══════════════════════════════════════ */

/* ── CSS Variables ────────────────────── */
:root {
  --color-primary:       #2563EB;
  --color-primary-dark:  #1D4ED8;
  --color-primary-alpha: rgba(37, 99, 235, 0.12);

  --color-bg:            #E8E4DE;
  --color-bg-muted:      #F3F4F6;
  --color-surface:       #FFFFFF;
  --color-hover:         #F3F4F6;

  --color-border:        #E5E7EB;
  --color-border-light:  #F3F4F6;

  --color-text:          #111827;
  --color-text-muted:    #6B7280;

  --color-income:        #059669;
  --color-expense:       #DC2626;
  --color-danger:        #DC2626;
  --color-danger-light:  #FEF2F2;

  --color-badge-bg:      #F3F4F6;

  --nav-height:          3.5rem;
  --font-sans:           'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

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

html { font-size: 16px; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
  min-height: 100vh;
}

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

/* ── Navigation ───────────────────────── */
.nav {
  height: var(--nav-height);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  padding: 0 1.25rem;
  gap: 1rem;
  position: sticky;
  top: 0;
  z-index: 50;
}

.nav-logo {
  font-weight: 800;
  font-size: 1rem;
  color: var(--color-primary);
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  flex: 1;
  overflow-x: auto;
  scrollbar-width: none;
}
.nav-links::-webkit-scrollbar { display: none; }

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.7rem;
  border-radius: 0.45rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-muted);
  white-space: nowrap;
  transition: all 0.15s;
  text-decoration: none;
}
.nav-link:hover { background: var(--color-hover); color: var(--color-text); text-decoration: none; }
.nav-link.active { background: var(--color-primary-alpha); color: var(--color-primary); font-weight: 600; }

.nav-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-left: auto;
}

.nav-user {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  white-space: nowrap;
}

.nav-lang {
  font-size: 0.8rem;
  font-weight: 600;
  border: 1px solid var(--color-border);
  border-radius: 0.35rem;
  padding: 0.2rem 0.5rem;
  background: none;
  cursor: pointer;
  color: var(--color-text-muted);
  transition: all 0.15s;
}
.nav-lang:hover { border-color: var(--color-primary); color: var(--color-primary); }

/* ── Buttons ──────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
  font-size: 0.875rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.15s;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}
.btn-primary:hover { background: var(--color-primary-dark); border-color: var(--color-primary-dark); }

.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
  border-color: var(--color-border);
}
.btn-ghost:hover { background: var(--color-hover); color: var(--color-text); }

.btn-danger {
  background: var(--color-danger);
  color: #fff;
  border-color: var(--color-danger);
}
.btn-danger:hover { background: #B91C1C; border-color: #B91C1C; }

.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-icon { font-size: 1rem; }

/* ── Spinner ──────────────────────────── */
.spinner {
  width: 2rem;
  height: 2rem;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  margin: 0 auto;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Dashboard tiles ──────────────────── */
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}

.dash-tile {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 1.5rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 0.75rem;
  text-decoration: none;
  color: var(--color-text);
  transition: all 0.2s;
  gap: 0.5rem;
}

.dash-tile:hover {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-alpha);
  text-decoration: none;
}

.dash-tile-icon { font-size: 1.75rem; }
.dash-tile-label { font-weight: 700; font-size: 1rem; }
.dash-tile-desc { font-size: 0.82rem; color: var(--color-text-muted); }

/* ── Utility ──────────────────────────── */
.text-muted { color: var(--color-text-muted); }
.text-sm { font-size: 0.875rem; }

/* ── Responsive nav ───────────────────── */
@media (max-width: 600px) {
  .nav { padding: 0 0.75rem; gap: 0.5rem; }
  .nav-user { display: none; }
  .nav-link span.nav-link-text { display: none; }
}