/* =============================================================================
   vendor_guide.shared.css — Shared styles for the Ultimate Vendor Guide
   Covers: star ratings, tier badges, vendor cards, filter chips, buttons,
           tags, pagination, loading states, and utility classes.
   ============================================================================= */

:root {
    --vg-primary:     #1a56db;
    --vg-primary-dk:  #1341b0;
    --vg-accent:      #f97316;
    --vg-bg:          #f8fafc;
    --vg-card-bg:     #ffffff;
    --vg-border:      #e2e8f0;
    --vg-text:        #1e293b;
    --vg-text-muted:  #64748b;
    --vg-star-color:  #f59e0b;
    --vg-success:     #22c55e;
    --vg-danger:      #ef4444;
    --vg-radius:      10px;
    --vg-shadow:      0 2px 12px rgba(0,0,0,.08);
    --vg-shadow-lg:   0 8px 32px rgba(0,0,0,.14);
    --vg-transition:  .2s ease;
}

/* ── Star Ratings ──────────────────────────────────────────────────────────── */

.vg-stars {
    --rating: 0;
    display: inline-block;
    font-size: 1rem;
    line-height: 1;
    background: linear-gradient(
        to right,
        var(--vg-star-color) calc(var(--rating) / 5 * 100%),
        #cbd5e1 calc(var(--rating) / 5 * 100%)
    );
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 2px;
}

.vg-stars-large {
    font-size: 1.6rem;
    letter-spacing: 3px;
}

/* ── Tier Badges ───────────────────────────────────────────────────────────── */

.vg-tier-badge {
    display: inline-block;
    padding: .25em .75em;
    border-radius: 999px;
    font-size: .7rem;
    font-weight: 700;
    letter-spacing: .06em;
    text-transform: uppercase;
    color: #fff;
    background-color: var(--vg-primary);
}

/* ── Buttons ───────────────────────────────────────────────────────────────── */

.vg-btn {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    padding: .55rem 1.25rem;
    border-radius: var(--vg-radius);
    font-weight: 600;
    font-size: .9rem;
    cursor: pointer;
    text-decoration: none;
    transition: background var(--vg-transition), opacity var(--vg-transition), transform var(--vg-transition);
    border: 2px solid transparent;
}

.vg-btn:hover        { transform: translateY(-1px); }
.vg-btn:active       { transform: translateY(0); }

.vg-btn--primary     { background: var(--vg-primary); color: #fff; }
.vg-btn--primary:hover { background: var(--vg-primary-dk); }

.vg-btn--outline     { border-color: var(--vg-primary); color: var(--vg-primary); background: transparent; }
.vg-btn--outline:hover { background: var(--vg-primary); color: #fff; }

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

.vg-btn--full        { width: 100%; justify-content: center; margin-bottom: .5rem; }
.vg-btn:disabled     { opacity: .5; cursor: not-allowed; transform: none; }

/* ── Tags ──────────────────────────────────────────────────────────────────── */

.vg-tag {
    display: inline-block;
    padding: .2em .65em;
    border-radius: 999px;
    font-size: .75rem;
    font-weight: 600;
    background: #e0e7ff;
    color: #3730a3;
    margin: .15rem;
}

.vg-tag--industry { background: #dcfce7; color: #166534; }
.vg-tag--category { background: #fef3c7; color: #92400e; }
.vg-tag--primary  { outline: 2px solid currentColor; }

/* ── Filter Chips ──────────────────────────────────────────────────────────── */

.vg-filter-chips {
    display: flex;
    flex-wrap: wrap;
    gap: .4rem;
    margin-bottom: 1rem;
}

.vg-chip {
    display: inline-flex;
    align-items: center;
    gap: .3rem;
    padding: .3em .75em;
    border-radius: 999px;
    background: var(--vg-primary);
    color: #fff;
    font-size: .8rem;
    cursor: pointer;
    transition: background var(--vg-transition);
}

.vg-chip:hover { background: var(--vg-primary-dk); }

/* ── Pagination ────────────────────────────────────────────────────────────── */

.vg-pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-top: 2rem;
}

.vg-page-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 2px solid var(--vg-border);
    background: #fff;
    cursor: pointer;
    transition: all var(--vg-transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.vg-page-btn:hover:not(:disabled) { border-color: var(--vg-primary); color: var(--vg-primary); }
.vg-page-btn:disabled              { opacity: .4; cursor: not-allowed; }

.vg-page-info { font-weight: 600; color: var(--vg-text-muted); }

/* ── Loading & Empty ───────────────────────────────────────────────────────── */

.vg-loading {
    text-align: center;
    padding: 3rem;
    color: var(--vg-text-muted);
    font-size: 1.1rem;
}

.vg-empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--vg-text-muted);
}

.vg-empty-state i    { font-size: 3rem; margin-bottom: 1rem; display: block; }
.vg-empty-state h3   { font-size: 1.4rem; color: var(--vg-text); margin-bottom: .5rem; }

/* ── Form Elements ─────────────────────────────────────────────────────────── */

.vg-input,
.vg-textarea,
.vg-filter-input,
.vg-filter-select,
.vg-sort-select {
    width: 100%;
    padding: .55rem .9rem;
    border: 2px solid var(--vg-border);
    border-radius: var(--vg-radius);
    font-size: .9rem;
    color: var(--vg-text);
    background: #fff;
    transition: border-color var(--vg-transition);
    box-sizing: border-box;
}

.vg-input:focus,
.vg-textarea:focus,
.vg-filter-input:focus,
.vg-filter-select:focus,
.vg-sort-select:focus {
    outline: none;
    border-color: var(--vg-primary);
}

.vg-textarea { resize: vertical; min-height: 80px; }

.vg-form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: .75rem;
    margin-bottom: .75rem;
}

/* ── Messages ──────────────────────────────────────────────────────────────── */

.vg-msg--success { color: var(--vg-success); font-weight: 600; }
.vg-msg--error   { color: var(--vg-danger);  font-weight: 600; }

/* ── Verified Badge ────────────────────────────────────────────────────────── */

.vg-verified-badge {
    display: inline-flex;
    align-items: center;
    gap: .25rem;
    font-size: .75rem;
    color: var(--vg-primary);
    font-weight: 600;
}

/* ── Logo Placeholder ──────────────────────────────────────────────────────── */

.vg-logo-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--vg-primary), var(--vg-accent));
    color: #fff;
    font-size: 2rem;
    font-weight: 800;
    border-radius: var(--vg-radius);
}

@media (max-width: 640px) {
    .vg-form-row { grid-template-columns: 1fr; }
}