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

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

html { font-size: 16px; -webkit-font-smoothing: antialiased; }

body {
  font-family: var(--font);
  font-size: 14px;
  color: var(--text-primary);
  background: var(--bg);
  line-height: 1.5;
  min-height: 100vh;
}

a { color: var(--brand); text-decoration: none; transition: color var(--t); }
a:hover { color: var(--brand-dark); }

h1 { font-size: 1.75rem; font-weight: 700; line-height: 1.2; }
h2 { font-size: 1.375rem; font-weight: 600; line-height: 1.3; }
h3 { font-size: 1.125rem; font-weight: 600; line-height: 1.4; }
h4 { font-size: 1rem;     font-weight: 600; }
h5 { font-size: .9rem;    font-weight: 500; }

p { color: var(--text-secondary); line-height: 1.6; }

img { display: block; max-width: 100%; }

ul, ol { list-style: none; }

input, textarea, select, button { font-family: var(--font); font-size: 14px; }

/* Scrollbar */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--gray-300); border-radius: var(--r-full); }
::-webkit-scrollbar-thumb:hover { background: var(--gray-400); }

/* Selection */
::selection { background: var(--brand-light); color: var(--brand-dark); }

/* Spinner animation */
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }
@keyframes slideIn { from { opacity: 0; transform: translateX(-10px); } to { opacity: 1; transform: translateX(0); } }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .4; } }

.spin { animation: spin 1s linear infinite; }
.fade-in { animation: fadeIn .25s ease forwards; }

/* Utility */
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }
.truncate { overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
.text-sm  { font-size: 13px; }
.text-xs  { font-size: 12px; }
.text-muted { color: var(--text-muted); }
.text-secondary { color: var(--text-secondary); }
.text-success { color: var(--success); }
.text-danger  { color: var(--danger); }
.text-warning { color: var(--warning); }
.fw-500 { font-weight: 500; }
.fw-600 { font-weight: 600; }
.d-flex { display: flex; }
.align-center { align-items: center; }
.gap-2 { gap: var(--sp-2); }
.gap-3 { gap: var(--sp-3); }
.mt-4  { margin-top: var(--sp-4); }
.mb-4  { margin-bottom: var(--sp-4); }