/* =====================================================
   PUNICODEX — Lexicon Browse Page Styles
   ===================================================== */

.lexicon-hero {
    min-height: 50vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: 8rem;
    padding-bottom: 3rem;
    position: relative;
    background: linear-gradient(180deg, var(--void) 0%, var(--void-deep) 100%);
}

.lexicon-hero-content { max-width: 800px; }

.lexicon-hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 400;
    color: var(--white);
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
}

.lexicon-hero-subtitle {
    font-size: 1.1rem;
    color: var(--white-dim);
    font-weight: 300;
    margin-bottom: 2rem;
}

/* Brand integration §4.13 — Möbius Ribbon above the stats row. */
.lexicon-mobius {
    width: min(340px, 62vw);
    margin: 0 auto 2rem;
    opacity: 0.92;
}

.lexicon-stats {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.lexicon-stat {
    text-align: center;
}

.lexicon-stat-value {
    font-family: var(--font-display);
    font-size: 2rem;
    color: var(--primary);
    display: block;
}

.lexicon-stat-label {
    font-size: 0.7rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--white-dim);
}

:root {
    --filter-radius: 12px;
    --filter-pill-radius: 999px;
}

/* ─── Filters ─── */
.lexicon-filters {
    background: linear-gradient(180deg, var(--void) 0%, rgba(5, 5, 5, 0.97) 100%);
    border-bottom: 1px solid rgba(212, 175, 55, 0.08);
    padding: 1.75rem 0 1.5rem;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
}

.filter-panel {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--filter-radius);
    padding: 1.5rem;
    box-shadow:
        0 1px 0 rgba(255, 255, 255, 0.03) inset,
        0 24px 80px rgba(0, 0, 0, 0.45);
}

/* Command bar */
.filter-command-bar {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.filter-search {
    position: relative;
}

.filter-search--large {
    flex: 1 1 360px;
    min-width: 260px;
}

.filter-search--large input {
    width: 100%;
    padding: 1rem 1.25rem 1rem 3rem;
    background: rgba(0, 0, 0, 0.45);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--filter-pill-radius);
    color: var(--white);
    font-family: var(--font-body);
    font-size: 1rem;
    letter-spacing: 0.01em;
    transition: all 0.3s var(--ease-out-expo);
}

.filter-search--large input:focus {
    outline: none;
    border-color: rgba(212, 175, 55, 0.45);
    background: rgba(0, 0, 0, 0.6);
    box-shadow:
        0 0 0 3px rgba(212, 175, 55, 0.08),
        0 8px 32px rgba(212, 175, 55, 0.06);
}

.filter-search--large input::placeholder { color: var(--white-dim); opacity: 0.55; }

.filter-search--large svg {
    position: absolute;
    left: 1.15rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--white-dim);
    opacity: 0.5;
    pointer-events: none;
    transition: opacity 0.25s ease;
}

.filter-search--large input:focus + svg { opacity: 0.85; }

.filter-command-group {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

/* Toggle switch */
.filter-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.65rem;
    padding: 0.55rem 0.85rem 0.55rem 0.65rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--filter-pill-radius);
    color: var(--white-dim);
    font-family: var(--font-body);
    font-size: 0.82rem;
    cursor: pointer;
    transition: all 0.25s ease;
    user-select: none;
    white-space: nowrap;
}

.filter-toggle:hover {
    border-color: rgba(212, 175, 55, 0.25);
    color: var(--white);
}

.filter-toggle__switch {
    width: 36px;
    height: 20px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--filter-pill-radius);
    position: relative;
    transition: background 0.25s ease;
    flex-shrink: 0;
}

.filter-toggle__knob {
    position: absolute;
    top: 2px;
    left: 2px;
    width: 16px;
    height: 16px;
    background: var(--white);
    border-radius: 50%;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.25);
    transition: transform 0.25s var(--ease-out-expo);
}

.filter-toggle.active .filter-toggle__switch {
    background: var(--primary);
}

.filter-toggle.active .filter-toggle__knob {
    transform: translateX(16px);
    background: var(--void);
}

.filter-toggle.active {
    color: var(--primary);
    border-color: rgba(212, 175, 55, 0.35);
    background: rgba(212, 175, 55, 0.07);
}

/* Sort select */
.filter-select-wrap {
    position: relative;
}

.filter-select {
    padding: 0.85rem 2.25rem 0.85rem 1.1rem;
    background: rgba(0, 0, 0, 0.35);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--filter-pill-radius);
    color: var(--white);
    font-family: var(--font-body);
    font-size: 0.85rem;
    cursor: pointer;
    appearance: none;
    min-width: 150px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23d4af37' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.9rem center;
    transition: all 0.25s ease;
}

.filter-select:hover,
.filter-select:focus {
    outline: none;
    border-color: rgba(212, 175, 55, 0.35);
    background-color: rgba(0, 0, 0, 0.5);
}

/* Filter groups */
.filter-groups {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    margin-bottom: 1.25rem;
}

.filter-group {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.filter-group__label {
    flex: 0 0 auto;
    min-width: 72px;
    padding-top: 0.45rem;
    font-family: var(--font-display);
    font-size: 0.7rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--primary-dim);
}

/* Tier segment */
.filter-segment {
    display: inline-flex;
    background: rgba(0, 0, 0, 0.35);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--filter-pill-radius);
    padding: 0.25rem;
}

.filter-segment__btn {
    padding: 0.45rem 1rem;
    background: transparent;
    border: none;
    border-radius: var(--filter-pill-radius);
    color: var(--white-dim);
    font-family: var(--font-body);
    font-size: 0.82rem;
    cursor: pointer;
    transition: all 0.25s var(--ease-out-expo);
    white-space: nowrap;
}

.filter-segment__btn:hover {
    color: var(--white);
}

.filter-segment__btn.active {
    background: var(--primary);
    color: var(--void);
    font-weight: 700;
    box-shadow: 0 2px 12px rgba(212, 175, 55, 0.25);
}

/* Pantheon chips */
.filter-chip-group {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.filter-chip-group--pantheon {
    max-height: 78px;
    overflow: hidden;
    position: relative;
    transition: max-height 0.35s var(--ease-out-expo);
}

.filter-chip-group--pantheon.expanded {
    max-height: none;
}

.filter-chip {
    padding: 0.4rem 0.85rem;
    background: rgba(255, 255, 255, 0.025);
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: var(--filter-pill-radius);
    color: var(--white-dim);
    font-family: var(--font-body);
    font-size: 0.78rem;
    letter-spacing: 0.01em;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.filter-chip:hover {
    border-color: rgba(212, 175, 55, 0.3);
    color: var(--white);
    background: rgba(255, 255, 255, 0.05);
}

.filter-chip.active {
    background: rgba(212, 175, 55, 0.12);
    border-color: rgba(212, 175, 55, 0.55);
    color: var(--primary-bright);
    box-shadow: 0 0 16px rgba(212, 175, 55, 0.08);
}

/* Pantheon expand button */
.filter-expand {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    margin-top: 0.5rem;
    padding: 0.3rem 0;
    background: transparent;
    border: none;
    color: var(--primary-dim);
    font-family: var(--font-body);
    font-size: 0.75rem;
    letter-spacing: 0.04em;
    cursor: pointer;
    transition: color 0.2s ease;
}

.filter-expand:hover {
    color: var(--primary);
}

.filter-expand svg {
    transition: transform 0.25s var(--ease-out-expo);
}

.filter-expand.expanded svg {
    transform: rotate(180deg);
}

/* Meta bar */
.filter-panel-meta {
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    font-size: 0.78rem;
    color: var(--white-dim);
    letter-spacing: 0.02em;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}

.filter-reset {
    padding: 0.35rem 0.85rem;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--filter-pill-radius);
    color: var(--white-dim);
    font-family: var(--font-body);
    font-size: 0.75rem;
    letter-spacing: 0.04em;
    cursor: pointer;
    transition: all 0.2s ease;
}

.filter-reset:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(212, 175, 55, 0.06);
}

/* ─── Grid ─── */
.lexicon-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
    padding: 3rem 0;
}

.lexicon-card {
    padding: 2rem 1.5rem;
    background: rgba(255, 255, 255, 0.015);
    border: 1px solid var(--white-faint);
    text-decoration: none;
    color: inherit;
    transition: all 0.4s var(--ease-out-expo);
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    position: relative;
    overflow: hidden;
    content-visibility: auto;
    contain-intrinsic-size: auto 180px;
}

.lexicon-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
    transform: scaleX(0);
    transition: transform 0.5s var(--ease-out-expo);
}

.lexicon-card:hover {
    border-color: color-mix(in srgb, var(--primary) 25%, transparent);
    background: rgba(255, 255, 255, 0.03);
    transform: translateY(-4px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
}

.lexicon-card:hover::before { transform: scaleX(1); }

.lexicon-card-unicode {
    font-family: var(--font-display);
    font-size: 1.5rem;
    color: var(--primary);
    letter-spacing: 0.05em;
}

.lexicon-card-greek {
    font-size: 0.9rem;
    color: var(--white-dim);
    font-style: italic;
    min-height: 1.5em;
}

.lexicon-card-domain {
    font-size: 0.85rem;
    color: var(--white-dim);
    line-height: 1.5;
    flex: 1;
}

.lexicon-card-meta {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-top: auto;
    padding-top: 0.5rem;
}

.lexicon-card-tier {
    display: inline-block;
    font-size: 0.65rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    padding: 0.2rem 0.6rem;
    border: 1px solid color-mix(in srgb, var(--primary) 30%, transparent);
    color: var(--primary);
}

.lexicon-card-pantheon {
    display: inline-block;
    font-size: 0.65rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    padding: 0.2rem 0.6rem;
    border: 1px solid var(--white-faint);
    color: var(--white-dim);
}

/* ─── Empty State ─── */
.lexicon-empty {
    text-align: center;
    padding: 6rem 2rem;
    grid-column: 1 / -1;
}

.lexicon-empty-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    color: var(--white);
    margin-bottom: 1rem;
}

.lexicon-empty-text {
    color: var(--white-dim);
    font-size: 1rem;
}

/* ─── Responsive ─── */
@media (max-width: 768px) {
    .lexicon-stats { gap: 1.25rem; }
    .lexicon-stat-value { font-size: 1.5rem; }

    /* Prevent page-level horizontal overflow */
    .lexicon-filters,
    .filter-panel,
    .filter-groups,
    .filter-group,
    .filter-command-bar,
    .filter-command-group,
    .filter-search--large,
    .filter-chip-group--pantheon {
        min-width: 0;
    }

    .filter-panel { padding: 1.1rem; }
    .filter-command-bar {
        flex-direction: column;
        align-items: stretch;
        gap: 0.85rem;
        margin-bottom: 1.25rem;
    }
    .filter-search--large {
        width: 100%;
        min-width: 0;
        flex-basis: auto;
    }
    .filter-command-group {
        width: 100%;
        justify-content: space-between;
    }
    .filter-toggle {
        flex: 1 1 auto;
        justify-content: center;
    }
    .filter-groups {
        gap: 1rem;
    }
    .filter-group {
        width: 100%;
        flex-direction: column;
        gap: 0.5rem;
    }
    .filter-group--pantheon {
        position: relative;
    }
    .filter-group__label {
        padding-top: 0;
        font-size: 0.65rem;
    }
    .filter-segment {
        width: 100%;
        justify-content: space-between;
    }
    .filter-segment__btn {
        flex: 1 1 auto;
        text-align: center;
        padding: 0.5rem 0.25rem;
    }
    .filter-chip-group { gap: 0.4rem; }
    .filter-chip {
        padding: 0.35rem 0.7rem;
        font-size: 0.75rem;
    }

    /* Pantheon chips: wrapped grid with expand on mobile */
    .filter-chip-group--pantheon {
        flex-wrap: wrap;
        overflow: hidden;
        max-height: 74px;
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
        transition: max-height 0.35s var(--ease-out-expo);
    }
    .filter-chip-group--pantheon.expanded {
        max-height: 600px;
    }
    .filter-panel-meta {
        font-size: 0.75rem;
    }
    .lexicon-grid { grid-template-columns: 1fr; }
}