/* ==========================================================================
   BASE — Reset, Typography, Utilities
   ========================================================================== */

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-normal);
    color: var(--color-text-primary);
    background-color: var(--color-bg);
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary);
}

ul, ol {
    list-style: none;
}

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

button {
    font-family: inherit;
    font-size: inherit;
    cursor: pointer;
    border: none;
    background: none;
    outline: none;
    transition: all var(--transition-fast);
}

input, select, textarea {
    font-family: inherit;
    font-size: inherit;
    border: none;
    outline: none;
}

table {
    border-collapse: collapse;
    width: 100%;
}

/* ── Typography ────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-tight);
    color: var(--color-text-primary);
}

h1 { font-size: var(--font-size-2xl); }
h2 { font-size: var(--font-size-xl); }
h3 { font-size: var(--font-size-lg); }
h4 { font-size: var(--font-size-md); }
h5 { font-size: var(--font-size-base); }
h6 { font-size: var(--font-size-sm); }

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

small {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

strong {
    font-weight: var(--font-weight-semibold);
}

/* ── SVG Icon Base ─────────────────────────────────── */
.icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    fill: currentColor;
    flex-shrink: 0;
}

.icon--sm {
    width: 16px;
    height: 16px;
}

.icon--lg {
    width: 24px;
    height: 24px;
}

.icon--xl {
    width: 32px;
    height: 32px;
}

/* ── Utility Classes ───────────────────────────────── */
.text-center    { text-align: center; }
.text-right     { text-align: right; }
.text-left      { text-align: left; }

.text-primary   { color: var(--color-text-primary); }
.text-secondary { color: var(--color-text-secondary); }
.text-muted     { color: var(--color-text-muted); }
.text-success   { color: var(--color-success); }
.text-danger    { color: var(--color-danger); }
.text-warning   { color: var(--color-warning); }
.text-info      { color: var(--color-info); }

.font-medium    { font-weight: var(--font-weight-medium); }
.font-semibold  { font-weight: var(--font-weight-semibold); }
.font-bold      { font-weight: var(--font-weight-bold); }

.truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ── Scrollbar Styling ─────────────────────────────── */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: #D1D5DB;
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: #9CA3AF;
}

/* ── Selection ─────────────────────────────────────── */
::selection {
    background-color: var(--color-primary-hover);
    color: var(--color-text-primary);
}