/**
 * Header Auth block — component styles.
 *
 * Tier badge CSS vars are defined here so they can be reused elsewhere.
 * All selectors are scoped to .vg-header-auth to avoid global leakage.
 */

:root {
    --vg-tier-free:       #94a3b8;
    --vg-tier-pro:        #3b82f6;
    --vg-tier-agency:     #8b5cf6;
    --vg-tier-enterprise: #f59e0b;

    --vg-tier-free-bg:        #f1f5f9;
    --vg-tier-pro-bg:         #eff6ff;
    --vg-tier-agency-bg:      #f5f3ff;
    --vg-tier-enterprise-bg:  #fffbeb;
}

/* ── Layout ──────────────────────────────────────────────────────────────── */

.vg-header-auth {
    display: inline-flex;
    align-items: center;
    gap: var(--vg-space-2, 0.5rem);
    position: relative;
    font-family: var(--vg-font, -apple-system, BlinkMacSystemFont, sans-serif);
    font-size: var(--vg-text-sm, 0.8125rem);
    /* Prevent theme overflow:hidden from clipping the dropdown. */
    overflow: visible;
}

/* ── Guest state ─────────────────────────────────────────────────────────── */

.vg-header-auth--guest {
    gap: var(--vg-space-2);
}

/* ── Buttons (reuse .vg-btn if loaded, else standalone) ──────────────────── */

.vg-header-auth .vg-btn {
    /* Inherits from base.css */
}

/* ── Trigger button ──────────────────────────────────────────────────────── */

.vg-header-auth__trigger {
    display: inline-flex;
    align-items: center;
    padding: 3px;
    background: transparent;
    border: 2px solid transparent;
    border-radius: 50%;
    cursor: pointer;
    transition: border-color var(--vg-transition);
}

.vg-header-auth__trigger:hover {
    border-color: var(--vg-border-light);
}

.vg-header-auth__trigger:focus-visible {
    outline: 2px solid var(--vg-focus-ring);
    outline-offset: var(--vg-focus-ring-offset);
}

/* ── Avatar ──────────────────────────────────────────────────────────────── */

.vg-header-auth__avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.vg-header-auth__avatar--photo {
    object-fit: cover;
    background: var(--vg-border-light);
}

.vg-header-auth__avatar--initials {
    color: #fff;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    /* Background color set inline via PHP (deterministic hsl from email). */
}

/* ── Display name ────────────────────────────────────────────────────────── */

.vg-header-auth__name {
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

@media (max-width: 640px) {
    .vg-header-auth__name {
        display: none;
    }
}

/* ── Tier badge ──────────────────────────────────────────────────────────── */

.vg-header-auth__tier-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: var(--vg-radius-full);
    font-size: var(--vg-text-xs);
    font-weight: 600;
    line-height: 1.4;
    letter-spacing: 0.02em;
    white-space: nowrap;
}

.vg-header-auth__tier-badge--free {
    background: var(--vg-tier-free-bg);
    color: var(--vg-tier-free);
}

.vg-header-auth__tier-badge--pro {
    background: var(--vg-tier-pro-bg);
    color: var(--vg-tier-pro);
}

.vg-header-auth__tier-badge--agency {
    background: var(--vg-tier-agency-bg);
    color: var(--vg-tier-agency);
}

.vg-header-auth__tier-badge--enterprise {
    background: var(--vg-tier-enterprise-bg);
    color: var(--vg-tier-enterprise);
}

/* ── Chevron ─────────────────────────────────────────────────────────────── */

.vg-header-auth__chevron {
    display: inline-flex;
    align-items: center;
    color: var(--vg-text-muted);
    transition: transform var(--vg-transition);
}

.vg-header-auth__trigger[aria-expanded="true"] .vg-header-auth__chevron {
    transform: rotate(180deg);
}

/* ── Dropdown ────────────────────────────────────────────────────────────── */

.vg-header-auth__dropdown {
    /*
     * Default: absolute positioning (fallback).
     * view.ts overrides to position:fixed + computed top/right via
     * getBoundingClientRect(), making it immune to overflow:hidden ancestors
     * and CSS variable failures.
     */
    position: absolute;
    top: calc(100% + 8px);
    top: calc(100% + var(--vg-space-2, 0.5rem));
    right: 0;
    min-width: 220px;
    background: var(--vg-surface, #ffffff);
    border: 1px solid var(--vg-border-light, #d1d5db);
    border-radius: var(--vg-radius-lg, 12px);
    box-shadow: var(--vg-shadow-lg, 0 8px 24px rgba(21,48,69,.1));
    padding: var(--vg-space-1, 0.25rem) 0;
    z-index: 1000;

    /* Entry animation — transform-origin top right works with both absolute and fixed. */
    transform-origin: top right;
    animation: vg-dropdown-in 0.12s ease forwards;
    /* Prevent any parent overflow:hidden from clipping us */
    will-change: transform, opacity;
}

.vg-header-auth__dropdown[hidden] {
    display: none;
}

@keyframes vg-dropdown-in {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(-4px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

/* ── Dropdown items ──────────────────────────────────────────────────────── */

.vg-header-auth__dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--vg-space-2);
    padding: var(--vg-space-2) var(--vg-space-4);
    background: transparent;
    border: none;
    text-align: left;
    font-family: var(--vg-font);
    font-size: var(--vg-text-sm);
    font-weight: 500;
    color: var(--vg-text);
    text-decoration: none;
    cursor: pointer;
    transition: background var(--vg-transition), color var(--vg-transition);
}

.vg-header-auth__dropdown-item:hover,
.vg-header-auth__dropdown-item:focus-visible {
    background: var(--vg-surface-hover);
    color: var(--vg-primary);
    text-decoration: none;
}

.vg-header-auth__dropdown-item:focus-visible {
    outline: 2px solid var(--vg-focus-ring);
    outline-offset: -2px;
}

.vg-header-auth__dropdown-item svg {
    flex-shrink: 0;
    color: var(--vg-text-muted);
}

.vg-header-auth__dropdown-item--logout {
    color: var(--vg-danger);
}

.vg-header-auth__dropdown-item--logout:hover,
.vg-header-auth__dropdown-item--logout:focus-visible {
    background: var(--vg-danger-light);
    color: var(--vg-danger);
}

.vg-header-auth__dropdown-item--logout svg {
    color: var(--vg-danger);
}

/* ── Dropdown divider ────────────────────────────────────────────────────── */

.vg-header-auth__dropdown-divider {
    height: 1px;
    background: var(--vg-border-light);
    margin: var(--vg-space-1) 0;
}

/* ── Dropdown meta (tier + quota) ────────────────────────────────────────── */

.vg-header-auth__dropdown-meta {
    display: flex;
    flex-direction: column;
    gap: var(--vg-space-1);
    padding: var(--vg-space-3) var(--vg-space-4);
}

.vg-header-auth__quota {
    font-size: var(--vg-text-xs);
    color: var(--vg-text-muted);
}

/* ── Backdrop ────────────────────────────────────────────────────────────── */

.vg-header-auth__backdrop {
    position: fixed;
    inset: 0;
    z-index: 999;
    background: transparent;
}

.vg-header-auth__backdrop[hidden] {
    display: none;
}