/* ═══════════════════════════════════════════════════
   MODULE 9 · COMPARISON GRID — Dark variant
   Design System v3.0 — side-by-side duel
   ═══════════════════════════════════════════════════ */

.comparison-scope {
    --color-bg: #0a0305;
    --color-surface: #120508;
    --color-surface-hover: #180a0e;
    --color-text: #ede4d8;
    --color-text-muted: rgba(237, 228, 216, 0.50);
    --color-border: rgba(168, 120, 46, 0.08);
    --color-burg: #800020;
    --color-burg-dark: #5a0016;
    --color-gold: #a8782e;
    --color-gold-light: #c9a96e;
    --shadow-card: 0 4px 18px rgba(0, 0, 0, 0.35);
    --shadow-card-hover: 0 8px 30px rgba(0, 0, 0, 0.45);
    --border-radius: 12px;
    --spacing-xs: 0.75rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.25rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 1.875rem;
    --spacing-2xl: 2.5rem;
    --ease: cubic-bezier(.4, 0, .2, 1);

    width: 100%;
}

.comparison-wrapper {
    max-width: 900px;
    margin: 0 auto;
}

/* ── grid ── */

.comparison-grid {
    display: flex;
    align-items: stretch;
    gap: var(--spacing-2xl);
    margin: 2.1875rem 0;
}

/* ── column cards — dark surface + layered accents ── */

.comparison-column {
    flex: 1;
    background: var(--color-surface);
    border-radius: var(--border-radius);
    padding: var(--spacing-xl) var(--spacing-lg);
    box-shadow: var(--shadow-card);
    border: 1px solid rgba(168, 120, 46, 0.06);
    transition: box-shadow 0.20s var(--ease),
                transform 0.20s var(--ease),
                background 0.20s var(--ease);
    position: relative;
    overflow: hidden;
}

/* top accent bar — burg→gold gradient */
.comparison-column::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(to right, var(--color-burg), var(--color-gold-light), transparent);
    border-radius: var(--border-radius) var(--border-radius) 0 0;
    opacity: 0.50;
    transition: opacity 0.20s var(--ease);
}

/* left accent bar — burg→gold, reveal on hover */
.comparison-column::after {
    content: "";
    position: absolute;
    top: 3px;
    left: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(to bottom, var(--color-burg), var(--color-gold-light));
    opacity: 0.25;
    transition: opacity 0.20s var(--ease);
}

.comparison-column:hover {
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-3px);
    background: var(--color-surface-hover);
}

.comparison-column:hover::before {
    opacity: 1;
}

.comparison-column:hover::after {
    opacity: 0.60;
}

/* ── title — dark medallion header ── */

.comparison-title {
    background: radial-gradient(circle at 38% 32%, #3a0a18, #110208);
    color: #ede4d8;
    font-family: 'Roboto Slab', Georgia, serif;
    font-weight: 300;
    font-size: 1.15rem;
    letter-spacing: 0.02em;
    text-align: center;
    padding: var(--spacing-md) var(--spacing-sm);
    border-radius: 7px;
    margin: calc(var(--spacing-xl) * -1) calc(var(--spacing-lg) * -1) var(--spacing-lg) calc(var(--spacing-lg) * -1);
    line-height: 1.3;
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 14px rgba(10, 3, 5, 0.30);
}

/* noise texture on title */
.comparison-title::before {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
    opacity: 0.035;
    mix-blend-mode: overlay;
    pointer-events: none;
}

/* gold separator under title */
.comparison-title::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 15%;
    right: 15%;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--color-gold-light), transparent);
}

/* title stays light on all states */
.comparison-title,
.comparison-title:hover,
.comparison-column:hover .comparison-title {
    color: #ede4d8;
}

.comparison-title small {
    font-weight: 400;
    font-size: 0.85em;
    opacity: 0.70;
    color: var(--color-gold-light);
}

/* ── list items — gold-bordered ── */

.comparison-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.comparison-list li {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--color-border);
    font-size: 0.98rem;
    line-height: 1.5;
    color: var(--color-text-muted);
    transition: color 0.20s var(--ease);
}

.comparison-list li:last-child {
    border-bottom: none;
}

.comparison-column:hover .comparison-list li {
    color: var(--color-text);
}

/* ── accent text — gold ── */

.comparison-accent {
    color: var(--color-gold-light);
    font-weight: 600;
}

/* ── VS divider — medallion pill ── */

.vs-divider {
    flex: 0 0 3.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Roboto Slab', Georgia, serif;
    font-size: 1.6rem;
    font-weight: 300;
    letter-spacing: 0.05em;
    color: var(--color-gold-light);
    position: relative;
}

/* glow behind VS */
.vs-divider::before {
    content: "";
    position: absolute;
    width: 3.5rem;
    height: 3.5rem;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(128, 0, 32, 0.20), transparent 70%);
    pointer-events: none;
}

/* gold ring around VS */
.vs-divider::after {
    content: "";
    position: absolute;
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    border: 1px solid rgba(168, 120, 46, 0.18);
    pointer-events: none;
}

/* ── note — dark card surface matching VS cards ── */

.comparison-scope .comparison-grid + .comparison-note {
    text-align: center;
    font-size: 1.05rem;
    color: rgba(237, 228, 216, 0.70);
    font-style: italic;
    max-width: 880px;
    margin: var(--spacing-lg) auto 0;
    padding: var(--spacing-md) var(--spacing-lg);
    line-height: 1.65;
    background: var(--color-surface);
    border: 1px solid rgba(168, 120, 46, 0.06);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-card);
}

.comparison-scope .comparison-grid + .comparison-note strong,
.comparison-scope .comparison-grid + .comparison-note .comparison-accent {
    color: var(--color-gold-light);
}

.comparison-scope .comparison-note a,
.comparison-wrapper .comparison-note a {
    color: var(--color-gold-light);
    font-weight: 700;
    text-decoration: underline;
    text-decoration-thickness: .08em;
    text-underline-offset: .18em;
    text-decoration-color: rgba(201, 169, 110, .55);
}

.comparison-scope .comparison-note a:hover,
.comparison-scope .comparison-note a:focus-visible,
.comparison-wrapper .comparison-note a:hover,
.comparison-wrapper .comparison-note a:focus-visible {
    text-decoration-color: currentColor;
}

/* ═══════════════════════════════════════════════════
   MOBILE — glassmorphism
   ═══════════════════════════════════════════════════ */

@media (max-width: 860px) {
    .comparison-grid {
        flex-direction: column;
        gap: 1.25rem;
    }

    /* ── column cards → glass ── */
    .comparison-column {
        background: rgba(255, 255, 255, 0.15);
        backdrop-filter: blur(16px) saturate(160%);
        -webkit-backdrop-filter: blur(16px) saturate(160%);
        border: 1px solid rgba(255, 255, 255, 0.40);
        box-shadow:
            0 8px 32px rgba(0, 0, 0, 0.08),
            inset 0 1px 0 rgba(255, 255, 255, 0.50);
    }

    .comparison-column:hover {
        background: rgba(255, 255, 255, 0.22);
        transform: translateY(-2px);
        box-shadow:
            0 10px 36px rgba(0, 0, 0, 0.10),
            inset 0 1px 0 rgba(255, 255, 255, 0.55);
    }

    /* accent bars — softer on glass */
    .comparison-column::before {
        opacity: 0.35;
    }

    .comparison-column::after {
        opacity: 0.18;
    }

    .comparison-column:hover::before {
        opacity: 0.70;
    }

    .comparison-column:hover::after {
        opacity: 0.40;
    }

    /* ── title → glass burgundy tint (not dark medallion) ── */
    .comparison-title {
        background: rgba(128, 0, 32, 0.10);
        color: #1a1014;
        box-shadow: none;
    }

    .comparison-title,
    .comparison-title:hover,
    .comparison-column:hover .comparison-title {
        color: #1a1014;
    }

    /* hide noise on glass title */
    .comparison-title::before {
        display: none;
    }

    /* gold separator — stays */
    .comparison-title::after {
        background: linear-gradient(to right, transparent, var(--color-gold), transparent);
    }

    .comparison-title small {
        color: var(--color-gold);
        opacity: 0.80;
    }

    /* ── list items → dark text ── */
    .comparison-list li {
        color: #4a3f44;
        border-bottom-color: rgba(128, 0, 32, 0.08);
    }

    .comparison-column:hover .comparison-list li {
        color: #1a1014;
    }

    .comparison-accent {
        color: var(--color-burg);
    }

    /* ── VS divider → adapted for light glass ── */
    .vs-divider {
        flex: none;
        margin: -0.25rem 0;
        font-size: 1.4rem;
        color: var(--color-burg);
    }

    .vs-divider::before {
        width: 2.75rem;
        height: 2.75rem;
        background: radial-gradient(circle, rgba(128, 0, 32, 0.10), transparent 70%);
    }

    .vs-divider::after {
        width: 2.25rem;
        height: 2.25rem;
        border-color: rgba(128, 0, 32, 0.15);
    }

    .comparison-scope .comparison-grid + .comparison-note {
        font-size: 0.95rem;
        margin-top: var(--spacing-md);
        padding: var(--spacing-sm) var(--spacing-md);
        color: #4a3f44;
        background: rgba(255, 255, 255, 0.16);
        backdrop-filter: blur(16px) saturate(160%);
        -webkit-backdrop-filter: blur(16px) saturate(160%);
        border: 1px solid rgba(255, 255, 255, 0.38);
        border-radius: var(--border-radius);
        box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.50);
    }

    .comparison-scope .comparison-grid + .comparison-note strong,
    .comparison-scope .comparison-grid + .comparison-note .comparison-accent {
        color: var(--color-burg);
    }

    .comparison-scope .comparison-note a,
    .comparison-wrapper .comparison-note a {
        color: var(--color-burg);
        text-decoration-color: rgba(128, 0, 32, .45);
    }
}