/* ========================================
   SHOOTER'S TOOLKIT - Dark Tactical Theme
   ======================================== */

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

:root {
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-card: #1c2128;
  --bg-input: #21262d;
  --border: #30363d;
  --border-bright: #484f58;
  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --text-muted: #6e7681;
  --accent: #f0883e;
  --accent-hover: #d67d2e;
  --accent-glow: rgba(240, 136, 62, 0.3);
  --green: #3fb950;
  --green-dim: rgba(63, 185, 80, 0.15);
  --red: #f85149;
  --red-dim: rgba(248, 81, 73, 0.15);
  --yellow: #d29922;
  --yellow-dim: rgba(210, 153, 34, 0.15);
  --blue: #58a6ff;
  --blue-dim: rgba(88, 166, 255, 0.15);
  --purple: #bc8cff;
  --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-mono: 'Cascadia Code', 'Fira Code', 'Consolas', monospace;
  --radius: 8px;
  --radius-lg: 12px;
  --shadow: 0 2px 8px rgba(0,0,0,0.3);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.4);
}

html { scroll-behavior: smooth; }

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

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

/* --- Navigation --- */
.nav {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 2rem;
  height: 60px;
}

.nav-logo {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  white-space: nowrap;
}

.nav-logo svg { flex-shrink: 0; }

.nav-links {
  display: flex;
  gap: 0.25rem;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}
.nav-links::-webkit-scrollbar { display: none; }

.nav-links a {
  color: var(--text-secondary);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius);
  font-size: 0.875rem;
  font-weight: 500;
  transition: all 0.2s;
  white-space: nowrap;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
  background: var(--bg-card);
}

.nav-links a.active { border-bottom: 2px solid var(--accent); }

/* Mobile nav */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
  margin-left: auto;
}

@media (max-width: 768px) {
  .nav-toggle { display: block; }
  .nav-links {
    display: none;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 1rem;
  }
  .nav-links.open { display: flex; }
}

/* --- Page Layout --- */
.page-header {
  text-align: center;
  padding: 3rem 1.5rem 2rem;
  max-width: 800px;
  margin: 0 auto;
}

.page-header h1 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.page-header .subtitle {
  color: var(--text-secondary);
  font-size: 1.05rem;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem 3rem;
}

.container-sm { max-width: 700px; }
.container-md { max-width: 900px; }

/* --- Cards --- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  transition: all 0.2s;
}

.card:hover {
  border-color: var(--border-bright);
  box-shadow: var(--shadow);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}

.tool-card {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  text-decoration: none;
  color: inherit;
}

.tool-card .icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.tool-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
}

.tool-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.5;
}

/* --- Forms & Inputs --- */
label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.35rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

input[type="number"],
input[type="text"],
select {
  width: 100%;
  padding: 0.65rem 0.85rem;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-size: 1rem;
  font-family: var(--font-sans);
  transition: border-color 0.2s;
}

input:focus, select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

input::placeholder { color: var(--text-muted); }

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin-bottom: 1rem;
}

.form-group { margin-bottom: 1rem; }

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.7rem 1.5rem;
  border: none;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 600;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: all 0.2s;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover { background: var(--accent-hover); transform: translateY(-1px); }

.btn-secondary {
  background: var(--bg-input);
  color: var(--text-primary);
  border: 1px solid var(--border);
}
.btn-secondary:hover { border-color: var(--border-bright); }

.btn-danger {
  background: var(--red-dim);
  color: var(--red);
  border: 1px solid transparent;
}
.btn-danger:hover { border-color: var(--red); }

.btn-success {
  background: var(--green-dim);
  color: var(--green);
  border: 1px solid transparent;
}

.btn-lg { padding: 1rem 2.5rem; font-size: 1.15rem; }
.btn-sm { padding: 0.4rem 0.85rem; font-size: 0.85rem; }
.btn-block { width: 100%; }

.btn-group {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

/* --- Results / Output --- */
.result-box {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin-top: 1.5rem;
}

.result-value {
  font-size: 3rem;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--accent);
  text-align: center;
}

.result-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 0.25rem;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.stat {
  text-align: center;
  padding: 1rem;
  background: var(--bg-primary);
  border-radius: var(--radius);
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  font-family: var(--font-mono);
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 0.2rem;
}

/* --- Tables --- */
.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

th {
  background: var(--bg-secondary);
  padding: 0.75rem 1rem;
  text-align: left;
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border);
}

td {
  padding: 0.65rem 1rem;
  border-bottom: 1px solid var(--border);
}

tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--bg-input); }

/* --- Badges --- */
.badge {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.badge-green { background: var(--green-dim); color: var(--green); }
.badge-red { background: var(--red-dim); color: var(--red); }
.badge-yellow { background: var(--yellow-dim); color: var(--yellow); }
.badge-blue { background: var(--blue-dim); color: var(--blue); }
.badge-purple { background: rgba(188,140,255,0.15); color: var(--purple); }

/* --- Timer-specific --- */
.timer-display {
  font-family: var(--font-mono);
  font-size: 5rem;
  font-weight: 700;
  text-align: center;
  color: var(--accent);
  padding: 2rem 0;
  letter-spacing: 0.05em;
}

.timer-display.running { color: var(--green); }
.timer-display.stopped { color: var(--red); }

.split-list {
  list-style: none;
  max-height: 300px;
  overflow-y: auto;
}

.split-list li {
  display: flex;
  justify-content: space-between;
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 0.95rem;
}

.split-list li:nth-child(odd) { background: var(--bg-input); }

/* --- Tabs --- */
.tabs {
  display: flex;
  gap: 0.25rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1.5rem;
  overflow-x: auto;
}

.tab-btn {
  padding: 0.6rem 1.25rem;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s;
}

.tab-btn:hover { color: var(--text-primary); }
.tab-btn.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.tab-content { display: none; }
.tab-content.active { display: block; }

/* --- Utility --- */
.text-center { text-align: center; }
.text-green { color: var(--green); }
.text-red { color: var(--red); }
.text-yellow { color: var(--yellow); }
.text-accent { color: var(--accent); }
.text-muted { color: var(--text-secondary); }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-2 { margin-bottom: 1rem; }
.gap-1 { gap: 0.5rem; }
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.hidden { display: none !important; }

/* --- Footer --- */
.footer {
  text-align: center;
  padding: 2rem;
  color: var(--text-muted);
  font-size: 0.8rem;
  border-top: 1px solid var(--border);
  margin-top: 3rem;
}

/* --- Animations --- */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in { animation: fadeIn 0.3s ease-out; }

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

.pulse { animation: pulse 1.5s ease-in-out infinite; }