/* Give the auth-wall overlay spinner an explicit clean target */
#google-loading-overlay .material-symbols-rounded {
    animation: spin 0.85s linear infinite !important;
    display: inline-block;
    will-change: transform;
    transform-origin: 50% 50%;
}

/* ============================================================
   GLASS PRIMITIVES
   ============================================================ */
.glass-card {
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}
.glass-3d {
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,0.08);
}

/* ============================================================
   GUEST BANNER
   ============================================================ */
#guest-banner {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-floating);
    background: rgba(234, 179, 8, 0.10);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(234, 179, 8, 0.2);
    padding: 8px 20px;
    text-align: center;
    font-size: 13px;
    color: var(--text-muted);
    display: none;
    font-weight: 500;
    letter-spacing: 0.3px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    transition: opacity 0.3s ease;
}
#guest-banner strong { color: #fde047; }

/* ============================================================
   AUTH WALL — MASTER (single canonical, top-tier production)
   ============================================================ */
#auth-wall {
    position: fixed;
    inset: 0;
    z-index: var(--z-auth-wall);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background:
        radial-gradient(ellipse 80% 60% at 50% -10%, rgba(0, 242, 254, 0.10), transparent 60%),
        radial-gradient(ellipse 60% 50% at 50% 110%, rgba(139, 92, 246, 0.08), transparent 60%),
        var(--bg-primary);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
}
#auth-wall::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.018) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.018) 1px, transparent 1px);
    background-size: 42px 42px;
    mask-image: radial-gradient(ellipse at center, #000 40%, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse at center, #000 40%, transparent 75%);
    pointer-events: none;
}

/* ============================================================
   AUTH CARD — MASTER
   ============================================================ */
.auth-header {
    text-align: center;
    margin-bottom: 20px;
}
.auth-card {
    position: relative;
    width: 100%;
    max-width: 420px;
    padding: 40px 32px 32px;
    background: color-mix(in srgb, var(--bg-elevated) 92%, transparent);
    border: 1px solid var(--border-glass);
    border-radius: 24px;
    text-align: center;
    box-shadow:
        0 1px 0 0 rgba(255, 255, 255, 0.06) inset,
        0 30px 80px -20px rgba(0, 0, 0, 0.75),
        0 0 100px -30px var(--accent-glow);
    backdrop-filter: blur(28px) saturate(180%);
    -webkit-backdrop-filter: blur(28px) saturate(180%);
    overflow: hidden;
    transition: transform var(--transition-base), opacity var(--transition-base);
}
.auth-card::before {
    content: '';
    position: absolute;
    inset: -1px;
    padding: 1px;
    border-radius: 24px;
    background: linear-gradient(135deg,
        color-mix(in srgb, var(--accent-glow) 45%, transparent),
        transparent 40%,
        transparent 60%,
        color-mix(in srgb, var(--accent-pro) 35%, transparent));
    -webkit-mask:
        linear-gradient(#000 0 0) content-box,
        linear-gradient(#000 0 0);
    -webkit-mask-composite: xor;
            mask-composite: exclude;
    pointer-events: none;
}
.auth-card:hover { transform: scale(1.02); }

/* ============================================================
   AUTH BRAND + TAGLINE
   ============================================================ */
.auth-logo {
    font-size: 28px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}
.auth-brand {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-bottom: 6px;
}
.auth-brand span {
    font-size: 30px;
    font-weight: 800;
    letter-spacing: -0.035em;
    background: linear-gradient(180deg, var(--text-main) 0%, color-mix(in srgb, var(--text-main) 70%, var(--accent-glow)) 100%);
    -webkit-background-clip: text;
            background-clip: text;
    color: transparent;
    font-family: 'Inter', sans-serif;
}
.auth-tagline {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-muted);
    margin-bottom: 26px;
    letter-spacing: -0.005em;
}
.auth-sub {
    color: var(--text-dim);
    font-size: 13px;
    line-height: 1.5;
    margin-bottom: 24px;
}

/* ============================================================
   AUTH DIVIDER
   ============================================================ */
.auth-divider {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 20px 0;
    color: var(--text-dim);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 1.4px;
    text-transform: uppercase;
}
.auth-divider::before,
.auth-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border-muted);
}

/* ============================================================
   AUTH PROVIDERS
   ============================================================ */
.auth-providers {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-bottom: 4px;
}
.auth-provider-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 10px;
    border-radius: 12px;
    border: 1px solid var(--border-muted);
    background: rgba(255, 255, 255, 0.02);
    color: var(--text-main);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s, border-color 0.2s, transform 0.15s, box-shadow 0.2s;
    font-family: 'Inter', sans-serif;
}
.auth-provider-btn:hover {
    transform: translateY(-1px);
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.16);
    box-shadow: 0 8px 22px rgba(0, 0, 0, 0.35);
}
.auth-provider-btn:active { transform: scale(0.97); }

/* Provider-specific ring colors */
.auth-provider-btn.google  { box-shadow: 0 0 0 1px rgba(66, 133, 244, 0.20) inset; }
.auth-provider-btn.github  { box-shadow: 0 0 0 1px rgba(88, 101, 242, 0.20) inset; }
.auth-provider-btn.email   { box-shadow: 0 0 0 1px rgba(104, 185, 124, 0.20) inset; }
.auth-provider-btn.passkey { box-shadow: 0 0 0 1px rgba(227, 174, 17, 0.20) inset; }

.auth-provider-btn.google:hover {
    background: rgba(66, 133, 244, 0.15);
    border-color: rgba(66, 133, 244, 0.5);
    box-shadow: 0 8px 25px rgba(66, 133, 244, 0.2);
}
.auth-provider-btn.github:hover {
    background: rgba(88, 101, 242, 0.15);
    border-color: rgba(88, 101, 242, 0.5);
    box-shadow: 0 8px 25px rgba(88, 101, 242, 0.2);
}
.auth-provider-btn.email:hover {
    background: rgba(104, 185, 124, 0.15);
    border-color: rgba(104, 185, 124, 0.5);
    box-shadow: 0 8px 25px rgba(104, 185, 124, 0.2);
}
.auth-provider-btn.passkey:hover {
    background: rgba(227, 174, 17, 0.15);
    border-color: rgba(227, 174, 17, 0.5);
    box-shadow: 0 8px 25px rgba(227, 174, 17, 0.2);
}

/* ============================================================
   AUTH GUEST BUTTON
   ============================================================ */
.auth-guest-btn {
    width: 100%;
    margin-top: 16px;
    padding: 14px;
    border-radius: 12px;
    border: 1px solid var(--border-muted);
    background: rgba(255, 255, 255, 0.03);
    color: var(--text-muted);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.25s ease;
    font-family: 'Inter', sans-serif;
    backdrop-filter: blur(4px);
}
.auth-guest-btn:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: var(--accent-glow);
    color: var(--text-main);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 242, 254, 0.1);
}
.auth-guest-btn:active { transform: scale(0.97); }

/* ============================================================
   AUTH TERMS
   ============================================================ */
.auth-terms {
    margin-top: 22px;
    font-size: 11.5px;
    color: var(--text-dim);
    line-height: 1.5;
    text-align: center;
}
.auth-terms a {
    color: var(--accent-glow);
    text-decoration: none;
}
.auth-terms a:hover { text-decoration: underline; }
/* ============================================================
   ELITE AUTH — aurora backdrop, button shine, brand bloom
   ============================================================ */
@layer elite {

/* Auth card — aurora background layer beneath content.
   A conic gradient rotates slowly, giving the glass a living quality. */
.auth-card {
    isolation: isolate;
    box-shadow:
        0 1px 0 0 rgba(255,255,255,0.08) inset,
        0 40px 100px -20px rgba(0,0,0,0.85),
        0 0 140px -30px color-mix(in srgb, var(--accent-glow) 45%, transparent);
}
.auth-card::after {
    content: '';
    position: absolute;
    inset: -60%;
    background: conic-gradient(from 0deg,
        transparent 0deg,
        color-mix(in srgb, var(--accent-glow) 14%, transparent) 60deg,
        transparent 140deg,
        color-mix(in srgb, var(--accent-pro) 12%, transparent) 240deg,
        transparent 360deg);
    animation: auroraRotate 24s linear infinite;
    opacity: 0.55;
    pointer-events: none;
    z-index: -1;
    filter: blur(40px);
}
@keyframes auroraRotate {
    to { transform: rotate(360deg); }
}

/* Auth brand — subtle glow under the wordmark */
.auth-brand span {
    filter: drop-shadow(0 0 24px color-mix(in srgb, var(--accent-glow) 30%, transparent));
}

/* Provider buttons — press physics + shine sweep on hover */
.auth-provider-btn {
    position: relative;
    overflow: hidden;
    transition:
        background var(--duration-swift) var(--ease-smooth),
        border-color var(--duration-swift) var(--ease-smooth),
        transform var(--duration-quick) var(--ease-elastic),
        box-shadow var(--duration-swift) var(--ease-smooth);
}
.auth-provider-btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg,
        transparent 0%,
        rgba(255,255,255,0.15) 50%,
        transparent 100%);
    transform: translateX(-100%);
    transition: transform var(--duration-glacial) var(--ease-smooth);
    pointer-events: none;
}
.auth-provider-btn:hover::after { transform: translateX(100%); }
.auth-provider-btn:active { transform: scale(0.97); }
.auth-provider-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px -8px rgba(0,0,0,0.5);
}

/* Guest button — tactile, distinguished */
.auth-guest-btn {
    transition:
        background var(--duration-swift) var(--ease-smooth),
        color var(--duration-swift) var(--ease-smooth),
        border-color var(--duration-swift) var(--ease-smooth),
        transform var(--duration-quick) var(--ease-elastic),
        box-shadow var(--duration-swift) var(--ease-smooth);
}
.auth-guest-btn:hover {
    transform: translateY(-2px);
    box-shadow:
        0 0 0 1px color-mix(in srgb, var(--accent-glow) 30%, transparent),
        0 12px 32px -8px color-mix(in srgb, var(--accent-glow) 25%, transparent);
}

/* Guest banner — soft pulse for ambient presence */
#guest-banner {
    box-shadow:
        0 4px 20px rgba(0,0,0,0.30),
        0 0 40px -12px rgba(234,179,8,0.35);
}

} /* end @layer elite */