/* ═══════════════════════════════════════════════════════════════════════════
   SolVault — Settings Page Styles
   Responsive: Desktop → Tablet → Mobile
   ═══════════════════════════════════════════════════════════════════════════ */

/* ─── Page Layout ─── */
.settings-page {
    background: var(--g50);
    min-height: 100vh;
}

.settings-main {
    padding-top: calc(var(--nav-h) + 20px);
    padding-bottom: 100px;
}

.settings-container {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ─── Page Header ─── */
.settings-header {
    margin-bottom: 24px;
}
.settings-header h1 {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--black);
    margin: 0 0 6px 0;
}
.settings-header p {
    color: var(--g500);
    font-size: 0.9rem;
    margin: 0;
}

/* ─── Tab Navigation ─── */
.settings-tabs {
    display: flex;
    gap: 4px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    border-bottom: 1px solid var(--g200);
    margin-bottom: 24px;
    padding-bottom: 0;
}
.settings-tabs::-webkit-scrollbar { display: none; }

.tab-btn {
    padding: 10px 18px;
    border: none;
    background: none;
    font-family: var(--sans);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--g500);
    cursor: pointer;
    white-space: nowrap;
    border-bottom: 2px solid transparent;
    transition: all var(--transition);
    border-radius: 0;
}
.tab-btn:hover { color: var(--black); }
.tab-btn.active {
    color: var(--black);
    border-bottom-color: var(--black);
    font-weight: 600;
}

/* ─── Tab Panels ─── */
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ─── Section Blocks ─── */
.section-block {
    background: var(--white);
    border: 1px solid var(--g200);
    border-radius: var(--r);
    padding: 20px;
    margin-bottom: 16px;
}

.section-title h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--black);
    margin: 0 0 4px 0;
}
.section-title p {
    color: var(--g500);
    font-size: 0.82rem;
    margin: 0 0 16px 0;
}

.subsection-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--black);
    margin: 20px 0 8px 0;
}
.subsection-desc {
    color: var(--g500);
    font-size: 0.82rem;
    margin: 0 0 12px 0;
}

/* ─── Preset Grid ─── */
.preset-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 12px;
}

.preset-card {
    border: 2px solid var(--g200);
    border-radius: var(--r);
    padding: 14px;
    cursor: pointer;
    transition: all var(--transition);
    background: var(--white);
}
.preset-card:hover {
    border-color: var(--g400);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}
.preset-card.active {
    border-color: var(--black);
    background: var(--g50);
    box-shadow: 0 0 0 1px var(--black);
}

.preset-card-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 6px;
}
.preset-id {
    font-family: var(--mono);
    font-size: 0.7rem;
    font-weight: 600;
    background: var(--g100);
    color: var(--g600);
    padding: 2px 6px;
    border-radius: 4px;
}
.preset-card.active .preset-id {
    background: var(--black);
    color: var(--white);
}
.preset-name {
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--black);
}
.preset-desc {
    font-size: 0.75rem;
    color: var(--g500);
    margin: 0 0 10px 0;
    line-height: 1.4;
}
.preset-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 4px;
}
.preset-stat {
    text-align: center;
}
.stat-label {
    display: block;
    font-size: 0.6rem;
    font-weight: 600;
    color: var(--g400);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.stat-val {
    display: block;
    font-family: var(--mono);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--black);
}

/* ─── Toggle Rows ─── */
.toggle-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 12px 0;
}
.toggle-row.highlight-row {
    background: var(--g50);
    padding: 14px 16px;
    border-radius: var(--r-sm);
    margin: 8px 0;
}
.toggle-row.compact { padding: 6px 0; }

.toggle-label {
    flex: 1;
}
.toggle-title {
    display: block;
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--black);
}
.toggle-desc {
    display: block;
    font-size: 0.75rem;
    color: var(--g500);
    margin-top: 2px;
}

/* ─── Switch (Toggle) ─── */
.switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
    flex-shrink: 0;
}
.switch.sm { width: 36px; height: 20px; }

.switch input { opacity: 0; width: 0; height: 0; }

.switch .slider {
    position: absolute;
    cursor: pointer;
    inset: 0;
    background: var(--g300);
    border-radius: 24px;
    transition: background var(--transition);
}
.switch .slider::before {
    content: "";
    position: absolute;
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background: var(--white);
    border-radius: 50%;
    transition: transform var(--transition);
    box-shadow: 0 1px 3px rgba(0,0,0,0.15);
}
.switch.sm .slider::before {
    height: 14px;
    width: 14px;
}
.switch input:checked + .slider { background: var(--green); }
.switch input:checked + .slider::before { transform: translateX(20px); }
.switch.sm input:checked + .slider::before { transform: translateX(16px); }

/* ─── TP Grid ─── */
.tp-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}
.tp-card {
    border: 1px solid var(--g200);
    border-radius: var(--r-sm);
    padding: 12px;
    background: var(--g50);
}
.tp-card-header {
    font-family: var(--mono);
    font-weight: 700;
    font-size: 0.85rem;
    color: var(--black);
    margin-bottom: 8px;
    text-align: center;
}

.tp-total-bar {
    background: var(--green-bg);
    border-radius: var(--r-sm);
    padding: 8px 14px;
    margin-bottom: 12px;
    font-size: 0.82rem;
    color: var(--green);
    font-weight: 600;
}
.tp-total-bar.error {
    background: var(--red-bg);
    color: var(--red);
}

/* ─── Config Grid ─── */
.config-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

/* ─── Field Groups ─── */
.field-group {
    margin-bottom: 16px;
}
.field-group label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--g600);
    margin-bottom: 4px;
}
.field-input {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--g200);
    border-radius: var(--r-sm);
    font-family: var(--mono);
    font-size: 0.85rem;
    color: var(--black);
    background: var(--white);
    transition: border-color var(--transition);
    box-sizing: border-box;
}
.field-input:focus {
    outline: none;
    border-color: var(--black);
    box-shadow: 0 0 0 1px var(--black);
}
.field-hint {
    display: block;
    font-size: 0.72rem;
    color: var(--g400);
    margin-top: 4px;
    line-height: 1.4;
}
.computed-val {
    font-family: var(--mono);
    color: var(--green);
    font-weight: 500;
}
.field-row {
    margin-bottom: 10px;
}
.field-row label {
    display: block;
    font-size: 0.72rem;
    font-weight: 500;
    color: var(--g500);
    margin-bottom: 3px;
}
.field-row .field-input {
    padding: 6px 10px;
    font-size: 0.8rem;
}

/* ─── Range Inputs ─── */
.range-row {
    display: flex;
    align-items: center;
    gap: 12px;
}
.range-input {
    flex: 1;
    -webkit-appearance: none;
    appearance: none;
    height: 6px;
    border-radius: 3px;
    background: var(--g200);
    outline: none;
}
.range-input::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--black);
    cursor: pointer;
    border: 2px solid var(--white);
    box-shadow: 0 1px 4px rgba(0,0,0,0.2);
}
.range-input::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--black);
    cursor: pointer;
    border: 2px solid var(--white);
    box-shadow: 0 1px 4px rgba(0,0,0,0.2);
}
.range-val {
    font-family: var(--mono);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--black);
    min-width: 48px;
    text-align: right;
}

/* ─── Speed Presets ─── */
.speed-presets {
    display: flex;
    gap: 8px;
    margin: 16px 0;
    flex-wrap: wrap;
}
.speed-btn {
    padding: 8px 20px;
    border: 1px solid var(--g200);
    border-radius: var(--r-sm);
    background: var(--white);
    font-family: var(--sans);
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--g600);
    cursor: pointer;
    transition: all var(--transition);
}
.speed-btn:hover {
    border-color: var(--g400);
    color: var(--black);
}
.speed-btn.active {
    background: var(--black);
    color: var(--white);
    border-color: var(--black);
}

/* ─── Filter Grid ─── */
.filters-grid {
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.filter-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 12px 14px;
    background: var(--g50);
    border-radius: var(--r-sm);
    transition: background var(--transition);
}
.filter-row:hover { background: var(--g100); }

.filter-info { flex: 1; }
.filter-name {
    display: block;
    font-weight: 600;
    font-size: 0.82rem;
    color: var(--black);
}
.filter-desc {
    display: block;
    font-size: 0.72rem;
    color: var(--g500);
    margin-top: 2px;
    line-height: 1.3;
}

/* ─── Risk Rules Grid ─── */
.risk-rules-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}
.risk-card {
    border: 1px solid var(--g200);
    border-radius: var(--r);
    padding: 20px;
    background: var(--g50);
}
.risk-card-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--r-sm);
    background: var(--g100);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 12px;
    color: var(--g600);
}
.risk-card h4 {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--black);
    margin: 0 0 6px 0;
}
.risk-value {
    font-family: var(--mono);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--green);
    margin: 0 0 8px 0;
}
.risk-desc {
    font-size: 0.75rem;
    color: var(--g500);
    margin: 0;
    line-height: 1.4;
}

/* ─── Save Bar (sticky) ─── */
.settings-save-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--white);
    border-top: 1px solid var(--g200);
    padding: 12px 20px;
    z-index: 100;
    transform: translateY(100%);
    transition: transform 0.3s ease;
    box-shadow: 0 -2px 12px rgba(0,0,0,0.08);
}
.settings-save-bar.visible { transform: translateY(0); }

.save-bar-inner {
    max-width: 960px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.save-status {
    font-size: 0.82rem;
    color: var(--g500);
    font-weight: 500;
}
.save-actions {
    display: flex;
    gap: 8px;
}

/* Button overrides for settings page */
.settings-save-bar .btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* ─── Toast Notifications ─── */
.toast-container {
    position: fixed;
    top: calc(var(--nav-h) + 12px);
    right: 16px;
    z-index: 200;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.toast {
    padding: 12px 18px;
    border-radius: var(--r-sm);
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--white);
    background: var(--black);
    opacity: 0;
    transform: translateX(20px);
    transition: all 0.3s ease;
    max-width: 360px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}
.toast.show { opacity: 1; transform: translateX(0); }
.toast-success { background: #166534; }
.toast-error { background: #991b1b; }
.toast-warn { background: #92400e; }

/* ─── Nav Links (center) ─── */
.settings-nav-link {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--g500);
    text-decoration: none;
    padding: 4px 12px;
    border-radius: var(--r-sm);
    transition: all var(--transition);
}
.settings-nav-link:hover { color: var(--black); background: var(--g100); }
.settings-nav-link.active {
    color: var(--black);
    font-weight: 600;
    background: var(--g100);
}

/* ─── Mobile Menu ─── */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}
.mobile-menu-btn span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--black);
    transition: all var(--transition);
}
.mobile-menu-btn.open span:nth-child(1) { transform: rotate(45deg) translate(4px, 4px); }
.mobile-menu-btn.open span:nth-child(2) { opacity: 0; }
.mobile-menu-btn.open span:nth-child(3) { transform: rotate(-45deg) translate(4px, -4px); }

.mobile-nav-drawer {
    display: none;
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    background: var(--white);
    border-bottom: 1px solid var(--g200);
    padding: 12px 20px;
    z-index: 90;
    flex-direction: column;
    gap: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}
.mobile-nav-drawer.open { display: flex; }
.mobile-nav-drawer a {
    padding: 10px 14px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--g600);
    text-decoration: none;
    border-radius: var(--r-sm);
}
.mobile-nav-drawer a.active {
    background: var(--g100);
    color: var(--black);
    font-weight: 600;
}
.mobile-wallet {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 10px 14px;
    font-size: 0.8rem;
    color: var(--g500);
}

/* ═══════════════════════════════════════════════════════════════════════════
   RESPONSIVE BREAKPOINTS
   ═══════════════════════════════════════════════════════════════════════════ */

/* ─── Tablet (1024px) ─── */
@media (max-width: 1024px) {
    .preset-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .tp-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ─── Small Tablet (768px) ─── */
@media (max-width: 768px) {
    .dash-nav-center { display: none; }
    .mobile-menu-btn { display: flex; }

    .settings-header h1 { font-size: 1.4rem; }

    .preset-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .tp-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .risk-rules-grid {
        grid-template-columns: 1fr;
    }
    .config-grid {
        grid-template-columns: 1fr;
    }
    .save-bar-inner {
        flex-direction: column;
        gap: 10px;
        align-items: stretch;
    }
    .save-status { text-align: center; }
    .save-actions { justify-content: center; }

    .settings-tabs {
        gap: 0;
    }
    .tab-btn {
        padding: 8px 12px;
        font-size: 0.8rem;
    }
}

/* ─── Mobile (480px) ─── */
@media (max-width: 480px) {
    .settings-container { padding: 0 12px; }
    .settings-header h1 { font-size: 1.2rem; }

    .preset-grid {
        grid-template-columns: 1fr;
    }
    .preset-stats {
        grid-template-columns: repeat(4, 1fr);
    }

    .tp-grid {
        grid-template-columns: 1fr;
    }

    .speed-presets {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
    }

    .section-block { padding: 14px; }

    .filter-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
    .filter-row .switch { align-self: flex-end; }

    .toggle-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
    .toggle-row .switch { align-self: flex-end; }

    .nav-actions { display: none; }

    .tab-btn {
        padding: 6px 10px;
        font-size: 0.75rem;
    }
}

/* ─── Tiny Mobile (360px) ─── */
@media (max-width: 360px) {
    .preset-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 6px;
    }
    .settings-header h1 { font-size: 1.1rem; }
}