/* =============================================================================
   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 {
    /* Brand */
    --vg-primary:       #273a3a;
    --vg-primary-dk:    #162929;
    --vg-primary-lt:    #dbeafe;
    --vg-accent:        #f97316;
    --vg-accent-dk:     #ea6c0a;

    /* Surface */
    --vg-bg:            #f1f5f9;
    --vg-bg-subtle:     #f8fafc;
    --vg-card-bg:       #ffffff;
    --vg-sidebar-bg:    #ffffff;

    /* Border */
    --vg-border:        #e2e8f0;
    --vg-border-focus:  #93c5fd;

    /* Text */
    --vg-text:          #0f172a;
    --vg-text-soft:     #334155;
    --vg-text-muted:    #64748b;
    --vg-text-xmuted:   #94a3b8;

    /* Feedback */
    --vg-star-color:    #f59e0b;
    --vg-success:       #16a34a;
    --vg-danger:        #dc2626;

    /* Shape */
    --vg-radius:        12px;
    --vg-radius-sm:     8px;
    --vg-radius-lg:     16px;

    /* Shadow */
    --vg-shadow-xs:     0 1px 3px rgba(0,0,0,.06);
    --vg-shadow:        0 2px 12px rgba(15,23,42,.08);
    --vg-shadow-md:     0 4px 20px rgba(15,23,42,.10);
    --vg-shadow-lg:     0 8px 40px rgba(15,23,42,.15);

    /* Motion */
    --vg-transition:    .2s cubic-bezier(.4,0,.2,1);
    --vg-transition-lg: .35s cubic-bezier(.4,0,.2,1);
}

/* ── 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-flex;
    align-items: center;
    gap: .3em;
    padding: .28em .8em;
    border-radius: 999px;
    font-size: .68rem;
    font-weight: 800;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: #fff;
    background-color: var(--vg-primary);
    box-shadow: 0 2px 6px rgba(37,99,235,.35);
}

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

.vg-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .4rem;
    padding: .6rem 1.3rem;
    border-radius: var(--vg-radius-sm);
    font-weight: 600;
    font-size: .875rem;
    cursor: pointer;
    text-decoration: none;
    transition: background var(--vg-transition),
                color var(--vg-transition),
                border-color var(--vg-transition),
                box-shadow var(--vg-transition),
                transform var(--vg-transition);
    border: 2px solid transparent;
    letter-spacing: .01em;
    white-space: nowrap;
}

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

.vg-btn--primary {
    background: linear-gradient(135deg, var(--vg-primary) 0%, var(--vg-primary-dk) 100%);
    color: #fff;
    box-shadow: 0 2px 8px rgba(37,99,235,.3);
}
.vg-btn--primary:hover {
    background: linear-gradient(135deg, var(--vg-primary-dk) 0%, #1e40af 100%);
    box-shadow: 0 4px 14px rgba(37,99,235,.4);
    color: #fff;
}

.vg-btn--outline {
    border-color: var(--vg-primary);
    color: var(--vg-primary);
    background: transparent;
}
.vg-btn--outline:hover {
    background: var(--vg-primary);
    color: #fff;
    box-shadow: 0 2px 8px rgba(37,99,235,.25);
}

.vg-btn--accent {
    background: linear-gradient(135deg, var(--vg-accent) 0%, var(--vg-accent-dk) 100%);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 2px 8px rgba(249,115,22,.3);
}
.vg-btn--accent:hover {
    box-shadow: 0 4px 14px rgba(249,115,22,.4);
    transform: translateY(-1px);
    color: #fff;
}

.vg-btn--ghost {
    border-color: var(--vg-border);
    color: var(--vg-text-soft);
    background: transparent;
}
.vg-btn--ghost:hover {
    background: var(--vg-bg);
    border-color: #94a3b8;
}

.vg-btn--full     { width: 100%; }
.vg-btn:disabled  { opacity: .45; cursor: not-allowed; transform: none; box-shadow: none; }

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

.vg-tag {
    display: inline-flex;
    align-items: center;
    gap: .25em;
    padding: .22em .7em;
    border-radius: 999px;
    font-size: .72rem;
    font-weight: 600;
    background: #ede9fe;
    color: #5b21b6;
    margin: .15rem;
    letter-spacing: .01em;
}

.vg-tag--industry { background: #dcfce7; color: #15803d; }
.vg-tag--category { background: #fef9c3; color: #a16207; }
.vg-tag--primary  { outline: 2px solid currentColor; outline-offset: 1px; }

/* ── 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: .32em .8em;
    border-radius: 999px;
    background: var(--vg-primary);
    color: #fff;
    font-size: .78rem;
    font-weight: 600;
    cursor: pointer;
    transition: background var(--vg-transition), transform var(--vg-transition);
}
.vg-chip:hover {
    background: var(--vg-primary-dk);
    transform: scale(1.03);
}

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

.vg-pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: .75rem;
    margin-top: 2.5rem;
    padding-top: 2rem;
    border-top: 1px solid var(--vg-border);
}

.vg-page-btn {
    width: 38px;
    height: 38px;
    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;
    color: var(--vg-text-soft);
    font-size: .85rem;
}
.vg-page-btn:hover:not(:disabled) {
    border-color: var(--vg-primary);
    color: var(--vg-primary);
    background: var(--vg-primary-lt);
    transform: scale(1.08);
}
.vg-page-btn:disabled { opacity: .35; cursor: not-allowed; }

.vg-page-info {
    font-weight: 600;
    font-size: .875rem;
    color: var(--vg-text-muted);
    padding: 0 .5rem;
}

/* ── Loading ────────────────────────────────────────────────────────────────── */

.vg-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    padding: 4rem 2rem;
    color: var(--vg-text-muted);
}

.vg-loading i {
    font-size: 2rem;
    color: var(--vg-primary);
    opacity: .7;
}

/* ── Empty State ────────────────────────────────────────────────────────────── */

.vg-empty-state {
    text-align: center;
    padding: 5rem 2rem;
    color: var(--vg-text-muted);
}
.vg-empty-state i  {
    font-size: 3.5rem;
    margin-bottom: 1.25rem;
    display: block;
    color: var(--vg-border);
}
.vg-empty-state h3 { font-size: 1.4rem; color: var(--vg-text-soft); margin-bottom: .5rem; }
.vg-empty-state p  { margin-bottom: 1.5rem; }

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

.vg-input,
.vg-textarea,
.vg-filter-input,
.vg-filter-select,
.vg-sort-select {
    width: 100%;
    padding: .55rem .9rem;
    border: 1.5px solid var(--vg-border);
    border-radius: var(--vg-radius-sm);
    font-size: .875rem;
    color: var(--vg-text);
    background: #fff;
    transition: border-color var(--vg-transition), box-shadow var(--vg-transition);
    box-sizing: border-box;
    appearance: none;
}
.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);
    box-shadow: 0 0 0 3px rgba(37,99,235,.12);
}

.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) 0%, #7c3aed 100%);
    color: #fff;
    font-size: 2rem;
    font-weight: 800;
    border-radius: var(--vg-radius-sm);
    letter-spacing: -.02em;
}

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