/* ============================================================
   MODALS — base shell
   ============================================================ */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: var(--z-floating);
    display: none;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}
.modal-overlay.active {
    display: flex;
    opacity: 1;
}
.modal-card {
    background: var(--bg-card);
    border: 1px solid var(--border-muted);
    width: 90%;
    max-width: 700px;
    border-radius: 20px;
    padding: 25px;
    box-shadow: 0 25px 50px var(--shadow-color);
    transform: translateY(20px);
    transition: transform 0.3s ease;
    display: flex;
    flex-direction: column;
    gap: 15px;
    max-height: 90vh;
    overflow-y: auto;
}
.modal-overlay.active .modal-card {
    transform: translateY(0);
}
.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-muted);
    padding-bottom: 15px;
}
.modal-title {
    color: var(--text-main);
    font-size: 18px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}
.close-modal-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    transition: 0.2s;
    font-size: 18px;
    padding: 4px;
    border-radius: 6px;
    line-height: 1;
}
.close-modal-btn:hover {
    color: var(--text-main);
    background: rgba(255, 255, 255, 0.05);
}
.modal-input {
    background: var(--bg-input);
    border: 1px solid var(--border-muted);
    color: var(--text-main);
    padding: 12px;
    border-radius: 10px;
    font-family: 'Inter', sans-serif;
    font-size: 14px;
    width: 100%;
    resize: vertical;
    min-height: 100px;
}
.modal-input:focus { border-color: var(--accent-glow); }
.modal-input::placeholder { color: #6b7280; }

/* ============================================================
   MODAL SUBMIT BUTTON — canonical (base + hover + active + disabled)
   ============================================================ */
.modal-submit-btn {
    background: #ffffff;
    color: #09090b;
    border: 1px solid rgba(255, 255, 255, 0.15);
    padding: 12px 18px;
    border-radius: 12px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    margin-top: 14px;
    width: 100%;
    font-family: 'Inter', sans-serif;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}
.modal-submit-btn:hover {
    background: #f4f4f5;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}
.modal-submit-btn:active { transform: scale(0.99); }
.modal-submit-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* ============================================================
   PROFILE STAT ROWS
   ============================================================ */
.profile-stat-row {
    display: flex;
    justify-content: space-between;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-muted);
    font-size: 14px;
}
.profile-stat-label { color: var(--text-muted); }
.profile-stat-value {
    color: var(--text-main);
    font-weight: 500;
    font-family: 'JetBrains Mono', monospace;
}

/* ============================================================
   UPGRADE MODAL — legacy tier-card system
   ============================================================ */
.axelr-pricing-container {
    display: flex;
    flex-direction: column;
    gap: 24px;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    box-sizing: border-box;
}
.axelr-pricing-container > div {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    width: 100%;
}
.tier-card {
    background: #0A0F0D;
    border-radius: 16px;
    padding: 28px;
    display: flex;
    flex-direction: column;
    position: relative;
    box-shadow: 0 8px 32px var(--shadow-color);
    min-width: 0;
    width: 100%;
    box-sizing: border-box;
}
.tier-card.pro-premium { border: 1px solid rgba(16, 185, 129, 0.15); }
.tier-card.business-premium { border: 1px solid rgba(239, 68, 68, 0.15); }
.tier-card .tier-badge-pos {
    position: absolute;
    top: 16px;
    right: 16px;
    font-size: 10px;
    font-weight: 700;
    padding: 4px 10px;
    border-radius: 20px;
    letter-spacing: 1px;
    z-index: 2;
}
.pro-premium .tier-badge-pos {
    background: rgba(16, 185, 129, 0.1);
    color: #10B981;
}
.business-premium .tier-badge-pos {
    background: rgba(239, 68, 68, 0.1);
    color: #EF4444;
}
.tier-card h3 {
    margin: 0 0 4px 0;
    font-size: 22px;
    color: #FFF;
    font-weight: 700;
    padding-right: 90px;
}
.tier-card p.sub-desc {
    margin: 0 0 20px 0;
    font-size: 14px;
    color: #888;
    line-height: 1.5;
}
.tier-card .price-output {
    font-size: 36px;
    font-weight: 700;
    color: #FFF;
    margin-bottom: 24px;
}
.tier-card .price-output span {
    font-size: 14px;
    color: #555;
    font-weight: 400;
}
.tier-card .options-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 28px;
}
.tier-card .options-group label {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 14px;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 1px solid rgba(255, 255, 255, 0.04);
}
.pro-premium .options-group label:has(input:checked) {
    border-color: rgba(16, 185, 129, 0.5);
    background: rgba(16, 185, 129, 0.05);
}
.business-premium .options-group label:has(input:checked) {
    border-color: rgba(239, 68, 68, 0.5);
    background: rgba(239, 68, 68, 0.05);
}
.tier-card .options-group label input[type="radio"] {
    margin-top: 3px;
    flex-shrink: 0;
}
.pro-premium .options-group label input[type="radio"] { accent-color: #10B981; }
.business-premium .options-group label input[type="radio"] { accent-color: #EF4444; }
.tier-card .options-group label .opt-content { flex: 1; min-width: 0; }
.tier-card .options-group label .opt-content .opt-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2px;
    flex-wrap: wrap;
    gap: 4px;
}
.tier-card .options-group label .opt-content .opt-row .opt-name {
    color: #FFF;
    font-size: 14px;
    font-weight: 600;
}
.tier-card .options-group label .opt-content .opt-row .opt-price {
    font-size: 14px;
    font-weight: 700;
}
.pro-premium .options-group label .opt-content .opt-row .opt-price { color: #10B981; }
.business-premium .options-group label .opt-content .opt-row .opt-price { color: #EF4444; }
.tier-card .options-group label .opt-content .opt-desc {
    color: #888;
    font-size: 12px;
    line-height: 1.4;
}
.tier-card .upgrade-btn {
    width: 100%;
    padding: 14px;
    border: none;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    transition: opacity 0.2s ease;
    margin-top: auto;
    color: #000;
    font-family: 'Inter', sans-serif;
}
.pro-premium .upgrade-btn { background: #10B981; }
.business-premium .upgrade-btn { background: #EF4444; color: #FFF; }
.tier-card .upgrade-btn:hover { opacity: 0.9; }

/* ============================================================
   SETTINGS MODAL
   ============================================================ */
.settings-grid {
    display: flex;
    flex-direction: column;
    gap: 15px;
}
.settings-item {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-muted);
    border-radius: 12px;
    padding: 14px 16px;
    display: flex;
    align-items: center;
    gap: 14px;
    cursor: pointer;
    transition: 0.2s;
    width: 100%;
    text-align: left;
    font-family: 'Inter', sans-serif;
}
.settings-item:hover {
    background: rgba(255, 255, 255, 0.04);
    border-color: rgba(255, 255, 255, 0.12);
}
.settings-item .icon {
    color: var(--text-muted);
    font-size: 22px;
    flex-shrink: 0;
}
.settings-item .content { flex: 1; }
.settings-item .title {
    color: var(--text-main);
    font-weight: 500;
    font-size: 14px;
}
.settings-item .desc {
    color: var(--text-muted);
    font-size: 12px;
}
.settings-item .arrow {
    color: var(--text-muted);
    font-size: 20px;
    flex-shrink: 0;
}

/* ============================================================
   QUOTA BOX
   ============================================================ */
.axelr-quota-box {
    display: flex !important;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    padding: 14px;
    margin-bottom: 0;
}
.axelr-quota-box .quota-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
}
.axelr-quota-box .quota-label {
    color: #888;
    font-size: 11px;
    font-family: 'JetBrains Mono', monospace;
    letter-spacing: 0.5px;
}
.axelr-quota-box .quota-count {
    color: var(--text-main);
    font-size: 11px;
    font-family: 'JetBrains Mono', monospace;
    font-weight: 600;
}
.axelr-quota-box .quota-track {
    width: 100%;
    height: 5px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 3px;
    overflow: hidden;
}
.axelr-quota-box .quota-fill {
    width: 0%;
    height: 100%;
    background: linear-gradient(90deg, var(--accent-glow), #FFF);
    transition: width 0.4s ease;
}

/* ============================================================
   TOGGLE SWITCH
   ============================================================ */
.switch {
    position: relative;
    display: inline-block;
    width: 40px;
    height: 24px;
    flex-shrink: 0;
}
.switch input { opacity: 0; width: 0; height: 0; }
.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    transition: .4s;
    border-radius: 24px;
}
.slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}
input:checked + .slider { background-color: var(--accent-glow); }
input:checked + .slider:before { transform: translateX(16px); }

/* ============================================================
   ADMIN METRICS
   ============================================================ */
#admin-metrics-container .profile-stat-row {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid var(--border-muted);
    font-size: 13px;
}
#admin-metrics-container .profile-stat-row .profile-stat-label {
    min-width: 120px;
    font-weight: 600;
    color: var(--text-muted);
}
#admin-metrics-container .profile-stat-row .profile-stat-value {
    font-weight: 500;
    color: var(--text-main);
    word-break: break-word;
    text-align: right;
}

/* ============================================================
   TIER MATRIX — modern system (billing toggle + sub-tier + features)
   ============================================================ */
.tier-billing-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-muted);
    border-radius: 30px;
    padding: 3px;
    width: fit-content;
    margin: 0 auto 14px auto;
    flex-wrap: wrap;
}
.billing-period-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 12px;
    font-weight: 600;
    padding: 6px 16px;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-family: 'Inter', sans-serif;
}
.billing-period-btn.active {
    background: var(--bg-card);
    color: var(--text-main);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
}
.discount-pill {
    background: rgba(244, 63, 94, 0.15);
    color: #fb7185;
    font-size: 9px;
    font-weight: 700;
    padding: 2px 6px;
    border-radius: 10px;
    letter-spacing: 0.3px;
}

.tier-card-modern:hover {
    transform: translateY(-2px);
    border-color: rgba(255, 255, 255, 0.16);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}
.tier-card-modern.popular {
    border-color: rgba(0, 242, 254, 0.35);
    background: rgba(14, 20, 32, 0.75);
    box-shadow: 0 8px 24px rgba(0, 242, 254, 0.08);
}
.tier-badge-status {
    position: absolute;
    top: 10px;
    right: 10px;
    font-size: 8px;
    font-weight: 700;
    letter-spacing: 0.4px;
    padding: 2px 6px;
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-muted);
}
.tier-badge-status.highlight {
    background: rgba(0, 242, 254, 0.15);
    color: var(--accent-glow);
    border: 1px solid rgba(0, 242, 254, 0.3);
}
.tier-name {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-main);
    margin: 0 0 2px 0;
}
.tier-summary {
    font-size: 11px;
    color: var(--text-muted);
    line-height: 1.35;
    min-height: 28px;
    margin: 0 0 8px 0;
}
.tier-price-box {
    display: flex;
    align-items: baseline;
    gap: 2px;
    margin-bottom: 8px;
}
.tier-currency {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-muted);
}
.tier-amount {
    font-size: 26px;
    font-weight: 800;
    color: var(--text-main);
    font-family: 'JetBrains Mono', monospace;
    line-height: 1;
}
.tier-term {
    font-size: 11px;
    color: var(--text-muted);
    margin-left: 3px;
}
.tier-limits-box {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    margin-bottom: 10px;
}
.limit-chip {
    font-size: 9px;
    font-weight: 600;
    padding: 2px 6px;
    border-radius: 5px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-muted);
    color: var(--text-main);
    font-family: 'JetBrains Mono', monospace;
}
.limit-chip.highlight {
    border-color: rgba(0, 242, 254, 0.3);
    color: var(--accent-glow);
}

/* Sub-tier radio selector */
.subtier-selector-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-bottom: 10px;
}
.subtier-option {
    display: flex;
    align-items: center;
    gap: 6px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-muted);
    border-radius: 6px;
    padding: 5px 8px;
    cursor: pointer;
    transition: background 0.15s ease, border-color 0.15s ease;
}
.subtier-option:has(input:checked) {
    background: rgba(255, 255, 255, 0.06);
    border-color: var(--accent-glow);
}
.subtier-option input[type="radio"] {
    accent-color: var(--accent-glow);
    cursor: pointer;
    margin: 0;
    transform: scale(0.85);
}
.subtier-content { flex: 1; min-width: 0; }
.subtier-row {
    display: flex;
    justify-content: space-between;
    font-size: 10.5px;
    font-weight: 600;
    color: var(--text-main);
}
.subtier-desc {
    font-size: 8.5px;
    color: var(--text-muted);
    display: block;
    margin-top: 1px;
}

/* Models section */
.tier-models-section {
    background: rgba(0, 0, 0, 0.25);
    border: 1px solid rgba(255, 255, 255, 0.04);
    border-radius: 8px;
    padding: 7px 8px;
    margin-bottom: 10px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.model-section-title {
    font-size: 8px;
    font-weight: 700;
    color: var(--text-muted);
    letter-spacing: 0.4px;
    margin-bottom: 1px;
}
.workspace-model-row {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 9.5px;
}
.ws-tag {
    font-size: 7.5px;
    font-weight: 700;
    padding: 1px 3px;
    border-radius: 3px;
    letter-spacing: 0.3px;
}
.ws-tag.data    { background: rgba(16, 185, 129, 0.2); color: #10b981; }
.ws-tag.design  { background: rgba(244, 63, 94, 0.2);  color: #f43f5e; }
.ws-tag.general { background: rgba(59, 130, 246, 0.2); color: #60a5fa; }
.provider-pill {
    color: var(--text-main);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-family: 'JetBrains Mono', monospace;
    font-size: 9px;
}

/* Infra pill — single canonical */
.infra-pill {
    display: inline-block;
    margin-left: 4px;
    padding: 1px 5px;
    border-radius: 4px;
    background: rgba(0, 242, 254, 0.10);
    color: var(--accent-glow);
    font-size: 8.5px;
    font-weight: 700;
    letter-spacing: 0.3px;
    border: 1px solid rgba(0, 242, 254, 0.18);
    white-space: nowrap;
    vertical-align: middle;
}
body.workspace-design .infra-pill {
    background: rgba(239, 68, 68, 0.10);
    color: #ef4444;
    border-color: rgba(239, 68, 68, 0.22);
}
body.workspace-data .infra-pill {
    background: rgba(16, 185, 129, 0.10);
    color: #10b981;
    border-color: rgba(16, 185, 129, 0.22);
}

/* Features list */
.tier-feature-list {
    list-style: none;
    padding: 0;
    margin: 0 0 12px 0;
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 10.5px;
    color: var(--text-main);
    flex: 1;
}
.tier-feature-list li {
    display: flex;
    align-items: flex-start;
    gap: 6px;
    line-height: 1.3;
}
.tier-feature-list li.disabled {
    color: var(--text-muted);
    opacity: 0.4;
}
.tier-feature-list .check {
    color: var(--accent-secondary);
    font-size: 13px;
    flex-shrink: 0;
}
.tier-feature-list .cross {
    color: var(--text-muted);
    font-size: 13px;
    flex-shrink: 0;
}

/* CTA buttons */
.tier-cta-btn {
    width: 100%;
    padding: 9px;
    border-radius: 8px;
    font-size: 12px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: opacity 0.15s ease, transform 0.15s ease;
    font-family: 'Inter', sans-serif;
    margin-top: auto;
}
.tier-cta-btn:hover:not(:disabled) {
    opacity: 0.9;
    transform: translateY(-1px);
}
.tier-cta-btn.current {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-muted);
    cursor: not-allowed;
    border: 1px solid var(--border-muted);
}
.tier-cta-btn.pro-btn {
    background: var(--accent-glow);
    color: #000;
    box-shadow: 0 2px 10px rgba(0, 242, 254, 0.25);
}
.tier-cta-btn.business-btn {
    background: #8b5cf6;
    color: #fff;
    box-shadow: 0 2px 10px rgba(139, 92, 246, 0.25);
}
.tier-cta-btn.enterprise-btn {
    background: transparent;
    border: 1px solid var(--border-muted);
    color: var(--text-main);
}
.tier-modal-footer {
    text-align: center;
    font-size: 11px;
    color: var(--text-muted);
    padding-top: 8px;
    border-top: 1px solid var(--border-muted);
}

/* ============================================================
   TIER MATRIX — fluid container + grid
   ============================================================ */
.tier-modal-card {
    width: min(1200px, 96vw) !important;
    max-height: 92vh !important;
    padding: clamp(12px, 2vw, 22px) !important;
    border-radius: clamp(14px, 2vw, 22px) !important;
}
.tier-grid {
    display: grid !important;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: clamp(8px, 1.2vw, 14px);
    margin-bottom: 14px;
    width: 100%;
}
.tier-card-modern {
    min-width: 0;
    width: 100%;
    padding: clamp(12px, 1.5vw, 18px) clamp(10px, 1.2vw, 16px);
    border-radius: clamp(12px, 1.5vw, 16px);
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.tier-name       { font-size: clamp(13px, 1.4vw, 16px) !important; }
.tier-summary    { font-size: clamp(10px, 1.05vw, 11.5px) !important; min-height: 0; }
.tier-amount     { font-size: clamp(20px, 2.4vw, 28px) !important; }
.tier-currency,
.tier-term       { font-size: clamp(10px, 1.1vw, 12px) !important; }
.limit-chip      { font-size: clamp(8.5px, 0.9vw, 10px) !important; padding: 2px 6px; }
.model-section-title { font-size: clamp(8px, 0.85vw, 9px) !important; }
.workspace-model-row { font-size: clamp(9px, 0.95vw, 10.5px) !important; }
.provider-pill   { font-size: clamp(9px, 0.95vw, 10.5px) !important; }
.infra-pill      { font-size: clamp(7.5px, 0.8vw, 8.5px) !important; }
.tier-feature-list li {
    font-size: clamp(10px, 1.05vw, 11.5px) !important;
    gap: 5px;
}
.tier-feature-list .check,
.tier-feature-list .cross { font-size: 12px !important; }
.subtier-row  { font-size: clamp(9.5px, 1vw, 11px) !important; }
.subtier-desc { font-size: clamp(8px, 0.85vw, 9px) !important; }
.tier-cta-btn {
    padding: clamp(8px, 1vw, 11px) !important;
    font-size: clamp(11px, 1.15vw, 13px) !important;
    border-radius: 10px !important;
}
.billing-period-btn { padding: clamp(5px,0.7vw,8px) clamp(10px,1.5vw,18px); font-size: clamp(11px,1.1vw,13px); }

.tier-modal-card * { min-width: 0; max-width: 100%; box-sizing: border-box; }
.tier-modal-card pre,
.tier-modal-card code { white-space: normal; word-break: break-word; }

/* ============================================================
   TIER MATRIX — responsive (kept inline, single source)
   ============================================================ */
@media (max-width: 1200px) {
    .tier-grid { gap: 10px; }
}
@media (max-width: 1024px) {
    .tier-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .tier-card-modern { padding: 16px 14px; }
    .tier-modal-card { width: 96vw !important; }
}
@media (max-width: 768px) {
    .tier-grid { gap: 10px; }
    .tier-card-modern { padding: 14px 12px; }
    .tier-modal-card { padding: 12px !important; }
    .tier-feature-list { gap: 5px; }
    .tier-card {
        width: 100% !important;
        margin: 12px 0 !important;
        padding: 20px 16px !important;
        min-width: unset !important;
    }
}
@media (max-width: 600px) {
    .tier-modal-card {
        width: 100% !important;
        max-width: 100% !important;
        height: 100vh !important;
        max-height: 100vh !important;
        border-radius: 0 !important;
        padding: 12px !important;
    }
    .tier-grid { grid-template-columns: 1fr; gap: 12px; }
    .tier-card-modern { padding: 14px; }
    .tier-amount { font-size: 26px !important; }
    .tier-name { font-size: 15px !important; }
    .subtier-option { padding: 7px 9px; }
    .tier-billing-toggle { width: 100%; }
    .billing-period-btn { flex: 1; justify-content: center; }
}
@media (max-width: 380px) {
    .tier-card-modern { padding: 11px 10px; }
    .tier-amount     { font-size: 22px !important; }
    .limit-chip      { font-size: 8px !important; padding: 2px 5px; }
    .tier-cta-btn    { font-size: 11px !important; padding: 8px !important; }
    .subtier-desc    { display: none; }
    .workspace-model-row { gap: 4px; }
}

/* ============================================================
   DIFF VIEW
   ============================================================ */
.diff-add {
    background: rgba(16,185,129,0.18);
    color: #6ee7b7;
    text-decoration: none;
    border-radius: 3px;
    padding: 1px 3px;
}
.diff-remove {
    background: rgba(239,68,68,0.15);
    color: #fca5a5;
    text-decoration: line-through;
    border-radius: 3px;
    padding: 1px 3px;
    opacity: 0.85;
}
/* ============================================================
   ELITE: Native modal entry via @starting-style. The browser
   animates from the starting state the first time the element
   enters the top layer, without needing a class toggle dance.
   Supported in Chrome 117+, Safari 17.5+, Firefox 129+.
   Silently degrades — the .modal-overlay opacity transition
   still handles the fallback path.
   ============================================================ */
@starting-style {
    .modal-overlay.active .modal-card {
        transform: translateY(20px) scale(0.98);
        opacity: 0;
    }
    .modal-overlay.active {
        opacity: 0;
    }
}
/* ============================================================
   ELITE MODALS — spring entry, gradient borders, cinematic backdrop
   ============================================================ */
@layer elite {

/* Backdrop — radial haze + saturation drop behind the card */
.modal-overlay {
    background:
        radial-gradient(ellipse 80% 60% at 50% -10%,
            color-mix(in srgb, var(--accent-glow) 12%, transparent) 0%,
            transparent 60%),
        rgba(0, 0, 0, 0.72);
    backdrop-filter: blur(16px) saturate(140%);
    -webkit-backdrop-filter: blur(16px) saturate(140%);
    transition: opacity var(--duration-flow) var(--ease-smooth);
}

/* Modal card — spring entry replaces linear slide */
.modal-overlay.active .modal-card {
    animation: modalSpring 0.42s var(--ease-overshoot) both;
    box-shadow:
        0 1px 0 rgba(255,255,255,0.06) inset,
        var(--shadow-floating),
        0 0 120px -30px color-mix(in srgb, var(--accent-glow) 30%, transparent);
}
@keyframes modalSpring {
    from { opacity: 0; transform: translateY(24px) scale(0.94); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}

/* Gradient border on premium modal surfaces (tier matrix) */
.tier-modal-card {
    position: relative;
    isolation: isolate;
}
.tier-modal-card::before {
    content: '';
    position: absolute;
    inset: 0;
    padding: 1px;
    border-radius: inherit;
    background: linear-gradient(135deg,
        color-mix(in srgb, var(--accent-glow) 40%, transparent) 0%,
        transparent 30%,
        transparent 70%,
        color-mix(in srgb, var(--accent-pro) 30%, transparent) 100%);
    -webkit-mask:
        linear-gradient(#000 0 0) content-box,
        linear-gradient(#000 0 0);
    -webkit-mask-composite: xor;
            mask-composite: exclude;
    pointer-events: none;
    z-index: 3;
}

/* Popular tier card — rotating conic border. Cinematic, restrained. */
.tier-card-modern.popular {
    position: relative;
    isolation: isolate;
    box-shadow:
        var(--shadow-surface-3),
        0 0 60px -20px color-mix(in srgb, var(--accent-glow) 40%, transparent);
}
.tier-card-modern.popular::before {
    content: '';
    position: absolute;
    inset: -1px;
    padding: 1px;
    border-radius: inherit;
    background: conic-gradient(from var(--gradient-angle),
        transparent 0deg,
        color-mix(in srgb, var(--accent-glow) 60%, transparent) 60deg,
        transparent 140deg,
        color-mix(in srgb, var(--accent-pro) 50%, transparent) 240deg,
        transparent 360deg);
    -webkit-mask:
        linear-gradient(#000 0 0) content-box,
        linear-gradient(#000 0 0);
    -webkit-mask-composite: xor;
            mask-composite: exclude;
    pointer-events: none;
    animation: rotateGradient 6s linear infinite;
    z-index: 3;
}

/* Modal submit — spring press */
.modal-submit-btn {
    transition:
        background var(--duration-quick) var(--ease-smooth),
        color var(--duration-quick) var(--ease-smooth),
        transform var(--duration-quick) var(--ease-elastic),
        box-shadow var(--duration-quick) var(--ease-smooth);
}
.modal-submit-btn:active:not(:disabled) { transform: scale(0.97); }

/* Settings rows — hover slide */
.settings-item {
    transition:
        background var(--duration-quick) var(--ease-smooth),
        border-color var(--duration-quick) var(--ease-smooth),
        transform var(--duration-quick) var(--ease-elastic);
}
.settings-item:hover { transform: translateX(2px); }

/* Toggle switch — spring knob, glow on active */
.slider:before {
    transition:
        transform var(--duration-swift) var(--ease-overshoot),
        background var(--duration-quick) var(--ease-smooth);
}
input:checked + .slider {
    box-shadow: 0 0 16px -2px color-mix(in srgb, var(--accent-glow) 60%, transparent);
}

/* Diff tokens — glow for added lines */
.diff-add {
    box-shadow: 0 0 0 1px rgba(16,185,129,0.20) inset,
                0 0 20px -8px rgba(16,185,129,0.40);
}

} /* end @layer elite */