/* assets/css/base.css — shared reset, variables, typography, buttons */

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html, body { height: 100%; }
img, svg { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; color: inherit; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; padding: 0; }

/* --- Variables --- */
:root {
  --bg:        #0f1115;
  --surface:   #171a21;
  --surface-2: #1e222b;
  --border:    #262b36;
  --text:      #e6e9ef;
  --text-dim:  #9aa3b2;
  --accent:    #22c55e;
  --accent-2:  #3b82f6;
  --danger:    #ef4444;
  --radius:    10px;
  --maxw:      1120px;
  --header-h:  64px;
  --font:      -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

/* --- Base --- */
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

main { flex: 1; }

h1, h2, h3, h4 { line-height: 1.2; font-weight: 700; letter-spacing: -0.01em; }
h1 { font-size: clamp(2rem, 4vw, 3rem); }
h2 { font-size: clamp(1.5rem, 2.5vw, 2rem); }
h3 { font-size: 1.15rem; }
p  { color: var(--text-dim); }

/* --- Layout --- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: 20px;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: background .15s ease, border-color .15s ease, color .15s ease, transform .05s ease;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn:focus-visible { outline: 2px solid var(--accent-2); outline-offset: 2px; }

.btn-primary {
  background: var(--accent);
  color: #07130b;
}
.btn-primary:hover { background: #2ee36b; }

.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}
.btn-ghost:hover { background: var(--surface-2); border-color: #333a48; }

/* --- Accessibility --- */
.skip-link {
  position: absolute;
  left: -999px;
  top: 8px;
  background: var(--accent);
  color: #07130b;
  padding: 8px 12px;
  border-radius: 6px;
  z-index: 100;
  font-weight: 600;
}
.skip-link:focus { left: 8px; }