/* ============================================
   TaskFlow — Design Tokens
   ============================================ */
:root {
  /* Color */
  --color-primary: #2563EB;
  --color-primary-dark: #1D4ED8;
  --color-primary-light: #EFF4FF;
  --color-bg: #F8FAFC;
  --color-surface: #FFFFFF;
  --color-border: #E2E8F0;
  --color-text: #1E293B;
  --color-text-soft: #64748B;
  --color-text-faint: #94A3B8;
  --color-success: #16A34A;
  --color-success-bg: #ECFDF3;
  --color-warning: #D97706;
  --color-warning-bg: #FFFAEB;
  --color-danger: #DC2626;
  --color-danger-bg: #FEF2F2;
  --color-todo: #64748B;
  --color-todo-bg: #F1F5F9;

  /* Type */
--font-display: 'Outfit', sans-serif;
--font-body: 'Plus Jakarta Sans', sans-serif;
--font-mono: 'Fira Code', monospace;

  /* Layout */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow-card: 0 1px 2px rgba(15, 23, 42, 0.04), 0 1px 6px rgba(15, 23, 42, 0.05);
  --shadow-card-hover: 0 4px 10px rgba(15, 23, 42, 0.06), 0 2px 20px rgba(15, 23, 42, 0.07);
  --max-width: 1160px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text);
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  margin: 0 0 0.5em 0;
  letter-spacing: -0.01em;
}

p { margin: 0 0 1em 0; color: var(--color-text-soft); }

a { color: inherit; text-decoration: none; }

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

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* ============================================
   Nav Bar
   ============================================ */
.navbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(248, 250, 252, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.navbar-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--color-text);
}

.brand-mark {
  width: 26px;
  height: 26px;
  border-radius: 7px;
  background: var(--color-primary);
  position: relative;
  flex-shrink: 0;
}

.brand-mark::before,
.brand-mark::after {
  content: "";
  position: absolute;
  background: #fff;
  border-radius: 2px;
}

.brand-mark::before {
  width: 3px; height: 12px;
  top: 7px; left: 8px;
}

.brand-mark::after {
  width: 3px; height: 3px;
  top: 16px; left: 15px;
  box-shadow: 6px -6px 0 #fff, 0 -9px 0 #fff;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-soft);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  transition: color 0.15s ease, background 0.15s ease;
}

.nav-links a:hover {
  color: var(--color-text);
  background: rgba(37, 99, 235, 0.06);
}

.nav-links a.active {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  margin: 4px 0;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.9rem;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.12s ease, box-shadow 0.12s ease, background 0.15s ease;
}

.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--color-primary-dark);
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.28);
}

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

.btn-sm { padding: 7px 14px; font-size: 0.82rem; }

/* ============================================
   Footer
   ============================================ */
.footer {
  border-top: 1px solid var(--color-border);
  margin-top: 80px;
  padding: 40px 0;
}
.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-brand {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--color-text);
}
.footer-note {
  font-size: 0.82rem;
  color: var(--color-text-faint);
  margin: 0;
}

/* ============================================
   Cards
   ============================================ */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

/* ============================================
   Status & Priority Pills
   ============================================ */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.76rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 999px;
  white-space: nowrap;
}
.pill::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

.pill-todo { background: var(--color-todo-bg); color: var(--color-todo); }
.pill-progress { background: var(--color-primary-light); color: var(--color-primary); }
.pill-completed { background: var(--color-success-bg); color: var(--color-success); }
.pill-active { background: var(--color-primary-light); color: var(--color-primary); }

.priority-low { color: var(--color-text-soft); }
.priority-medium { color: var(--color-warning); }
.priority-high { color: var(--color-danger); }

.priority-tag {
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* ============================================
   Avatars
   ============================================ */
.avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.78rem;
  color: #fff;
  flex-shrink: 0;
}

/* ============================================
   Utility layout
   ============================================ */
.page-header {
  padding: 48px 0 28px;
}
.page-header h1 { font-size: 1.9rem; }
.page-header p { max-width: 560px; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}
.eyebrow::before {
  content: "";
  width: 16px;
  height: 1px;
  background: var(--color-primary);
}

@media (max-width: 860px) {
  .nav-links, .nav-cta .btn-ghost { display: none; }
  .nav-toggle { display: block; }
}