:root {
    --primary: #1565C0;
    --primary-dark: #0D47A1;
    --primary-light: #42A5F5;
    --background: #F5F7FA;
    --card-background: #FFFFFF;
    --surface-variant: #E8EAF6;
    --text-primary: #212121;
    --text-secondary: #757575;
    --text-hint: #BDBDBD;
    --border: #E0E0E0;
    --white: #FFFFFF;
    --shadow: rgba(0, 0, 0, 0.08);
    --shadow-md: rgba(0, 0, 0, 0.12);
    --gradient-start: #1565C0;
    --gradient-end: #0D47A1;
    --success: #2E7D32;
    --warning: #E65100;
    --error: #C62828;
    --info: #0277BD;
    --font-xs: 10px;
    --font-s: 12px;
    --font-m: 14px;
    --font-l: 16px;
    --font-xl: 18px;
    --font-xxl: 20px;
    --font-heading: 24px;
    --padding-s: 8px;
    --padding-m: 12px;
    --padding-l: 16px;
    --padding-xl: 20px;
    --radius-s: 8px;
    --radius-m: 12px;
    --radius-l: 16px;
    --radius-round: 30px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

html, body {
    height: 100%;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--background);
    color: var(--text-primary);
    overflow: hidden;
    -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }

body {
    background: linear-gradient(180deg, #E8EEF7 0%, var(--background) 40%);
}

.mobile-container {
    --header-bar-height: 56px;
    max-width: 480px;
    margin: 0 auto;
    height: 100%;
    height: 100dvh;
    background-color: var(--background);
    position: relative;
    box-shadow: 0 0 40px rgba(13, 71, 161, 0.08);
    overflow-x: hidden;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
}

.mobile-container.scroll-locked {
    overflow: hidden;
}

@media (min-width: 481px) {
    body { padding: 0; }
    .mobile-container {
        border-left: 1px solid rgba(0,0,0,0.04);
        border-right: 1px solid rgba(0,0,0,0.04);
    }
}

/* Top AdSense slot below header */
.page-ad-wrap {
    width: 100%;
    background: var(--card-background);
    border-bottom: 1px solid var(--border);
}

.display-ad-slot {
    width: 100%;
    margin: 0;
    padding: 8px 0 4px;
    min-height: 0;
    text-align: center;
    overflow: hidden;
}

.display-ad-slot ins.adsbygoogle {
    display: block;
    width: 100%;
    min-height: 90px;
}

.display-ad-slot--empty {
    min-height: 0;
    padding: 0;
}

.empty-state {
    text-align: center;
    padding: 48px 24px;
    color: var(--text-secondary);
}

.empty-state .material-icons {
    font-size: 64px;
    color: var(--text-hint);
}

.empty-state p {
    margin-top: 16px;
    font-size: var(--font-l);
}

.empty-state-btn {
    display: inline-block;
    margin-top: 20px;
    padding: 12px 24px;
    background: var(--primary);
    color: white;
    border-radius: var(--radius-s);
    font-weight: 600;
}

/* ══════════════════════════════ APP BAR (Home) ══════════════════════════════ */
.app-bar,
.page-header {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 8px var(--shadow-md);
    padding-top: env(safe-area-inset-top, 0px);
    flex-shrink: 0;
}

.app-bar-safe-area,
.page-header-inner {
    display: flex;
    align-items: center;
    min-height: var(--header-bar-height);
    padding: 0 8px 0 12px;
}

.app-bar-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    min-height: var(--header-bar-height);
    gap: 8px;
}

.app-bar-title-section { flex: 1; min-width: 0; }
.app-bar-title { font-size: var(--font-xl); font-weight: 700; color: var(--white); line-height: 1.2; }
.app-bar-subtitle {
    font-size: var(--font-xs);
    color: rgba(255,255,255,0.85);
    margin-top: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.app-bar-actions { display: flex; align-items: center; gap: 4px; flex-shrink: 0; }

.app-bar-btn {
    width: 40px; height: 40px;
    border: none;
    background: rgba(255,255,255,0.15);
    border-radius: 50%;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.app-bar-btn:active { background: rgba(255,255,255,0.3); transform: scale(0.93); }
.app-bar-btn .material-icons { font-size: 22px; }

/* ══════════════════════════════ PAGE HEADER (subpages) ══════════════════════════════ */
.page-header-inner {
    width: 100%;
    position: relative;
    padding-right: 12px;
}

.page-back-btn {
    width: 40px; height: 40px;
    border: none;
    background: none;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    flex-shrink: 0;
    z-index: 1;
}

.page-back-btn:active { background: rgba(255,255,255,0.15); }

.page-title {
    position: absolute;
    left: 48px;
    right: 48px;
    top: 50%;
    transform: translateY(-50%);
    margin: 0;
    font-size: 18px;
    font-weight: 600;
    color: white;
    text-align: center;
    line-height: 1.25;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    pointer-events: none;
}

.page-header-trailing {
    margin-left: auto;
    min-width: 40px;
    min-height: 40px;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    flex-shrink: 0;
    z-index: 1;
}

.header-currency-chip {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 6px 10px;
    background: rgba(255,255,255,0.15);
    border: none;
    border-radius: 8px;
    color: white;
    font-family: inherit;
    font-size: var(--font-s);
    font-weight: 700;
    cursor: pointer;
    white-space: nowrap;
}

.header-currency-chip:active { background: rgba(255,255,255,0.28); }

/* ══════════════════════════════ SEARCH ══════════════════════════════ */
.search-section { padding: var(--padding-l); }
.search-container { position: relative; display: flex; align-items: center; }

.search-icon {
    position: absolute;
    left: 16px;
    color: var(--text-hint);
    font-size: 20px;
    pointer-events: none;
    z-index: 1;
}

.search-input {
    width: 100%;
    padding: 13px 48px 13px 48px;
    font-size: var(--font-m);
    font-family: inherit;
    background: var(--card-background);
    border: 1.5px solid var(--border);
    border-radius: var(--radius-round);
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
    color: var(--text-primary);
}

.search-input::placeholder { color: var(--text-hint); }
.search-input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(21,101,192,0.12); }

.search-clear {
    position: absolute;
    right: 8px;
    width: 32px; height: 32px;
    border: none;
    background: none;
    color: var(--text-secondary);
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.search-clear.visible { display: flex; }
.search-clear:active { background: rgba(0,0,0,0.05); }

/* ══════════════════════════════ SEARCH RESULTS ══════════════════════════════ */
.search-results { display: none; }
.search-results.active { display: block; }

.search-empty { text-align: center; padding: 50px 20px; }
.search-empty .material-icons { font-size: 64px; color: var(--text-hint); }
.search-empty p { font-size: var(--font-l); color: var(--text-secondary); margin-top: 16px; }

.search-result-item {
    display: flex;
    align-items: center;
    padding: 14px var(--padding-l);
    gap: 12px;
    cursor: pointer;
    transition: background 0.15s;
    color: inherit;
}

.search-result-item:active { background: rgba(0,0,0,0.03); }

.search-result-icon {
    width: 42px; height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(21,101,192,0.1);
    border-radius: var(--radius-s);
    flex-shrink: 0;
}

.search-result-icon .material-icons-outlined { font-size: 20px; color: var(--primary); }
.search-result-text { flex: 1; min-width: 0; }
.search-result-name { font-size: var(--font-m); font-weight: 600; }

.search-result-desc {
    font-size: var(--font-s);
    color: var(--text-secondary);
    margin-top: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.search-result-arrow { color: var(--text-hint); font-size: 14px; }

/* ══════════════════════════════ HOME ══════════════════════════════ */
.home-content { display: block; }
.home-content.hidden { display: none; }

.recent-section { margin-bottom: 16px; display: none; }
.recent-section.visible { display: block; }

.section-title {
    font-size: var(--font-xl);
    font-weight: 700;
    color: var(--text-primary);
    padding: 0 var(--padding-l);
    margin-bottom: 10px;
}

.recent-chips-scroll {
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding: 0 var(--padding-l);
    overscroll-behavior-x: contain;
    touch-action: pan-x;
}

.recent-chips-scroll::-webkit-scrollbar { display: none; }
.recent-chips { display: flex; gap: 8px; height: 44px; align-items: center; width: max-content; }

.recent-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    background: var(--surface-variant);
    border: none;
    border-radius: 20px;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.2s;
    font-family: inherit;
    color: inherit;
}

.recent-chip:active { background: #C5CAE9; transform: scale(0.96); }
.recent-chip .material-icons-outlined { font-size: 16px; color: var(--primary); }
.recent-chip span { font-size: 12px; font-weight: 500; color: var(--text-primary); }

/* ══════════════════════════════ CATEGORY GRID ══════════════════════════════ */
.category-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    padding: 0 var(--padding-l) 24px;
}

.category-card {
    background: var(--card-background);
    border-radius: var(--radius-l);
    padding: 20px 14px 18px;
    cursor: pointer;
    transition: transform 0.15s, box-shadow 0.15s;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    box-shadow: 0 2px 10px var(--shadow);
    border: 1px solid rgba(0,0,0,0.04);
    aspect-ratio: 1 / 1.1;
    position: relative;
    overflow: hidden;
    color: inherit;
}

.category-card:active { transform: scale(0.96); }

.category-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 4px;
}

.category-card[data-color="blue"]::before { background: #1565C0; }
.category-card[data-color="green"]::before { background: #2E7D32; }
.category-card[data-color="orange"]::before { background: #E65100; }
.category-card[data-color="purple"]::before { background: #6A1B9A; }
.category-card[data-color="red"]::before { background: #C62828; }
.category-card[data-color="teal"]::before { background: #00695C; }
.category-card[data-color="indigo"]::before { background: #283593; }
.category-card[data-color="brown"]::before { background: #4E342E; }
.category-card[data-color="cyan"]::before { background: #00838F; }
.category-card[data-color="pink"]::before { background: #AD1457; }
.category-card[data-color="amber"]::before { background: #FF8F00; }

.category-icon-container {
    width: 56px; height: 56px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 12px;
}

.category-card[data-color="blue"] .category-icon-container { background: rgba(21,101,192,0.1); }
.category-card[data-color="green"] .category-icon-container { background: rgba(46,125,50,0.1); }
.category-card[data-color="orange"] .category-icon-container { background: rgba(230,81,0,0.1); }
.category-card[data-color="purple"] .category-icon-container { background: rgba(106,27,154,0.1); }
.category-card[data-color="red"] .category-icon-container { background: rgba(198,40,40,0.1); }
.category-card[data-color="teal"] .category-icon-container { background: rgba(0,105,92,0.1); }
.category-card[data-color="indigo"] .category-icon-container { background: rgba(40,53,147,0.1); }
.category-card[data-color="brown"] .category-icon-container { background: rgba(78,52,46,0.1); }
.category-card[data-color="cyan"] .category-icon-container { background: rgba(0,131,143,0.1); }
.category-card[data-color="pink"] .category-icon-container { background: rgba(173,20,87,0.1); }
.category-card[data-color="amber"] .category-icon-container { background: rgba(255,143,0,0.1); }

.category-icon-container .material-icons-outlined { font-size: 28px; }

.category-card[data-color="blue"] .material-icons-outlined { color: #1565C0; }
.category-card[data-color="green"] .material-icons-outlined { color: #2E7D32; }
.category-card[data-color="orange"] .material-icons-outlined { color: #E65100; }
.category-card[data-color="purple"] .material-icons-outlined { color: #6A1B9A; }
.category-card[data-color="red"] .material-icons-outlined { color: #C62828; }
.category-card[data-color="teal"] .material-icons-outlined { color: #00695C; }
.category-card[data-color="indigo"] .material-icons-outlined { color: #283593; }
.category-card[data-color="brown"] .material-icons-outlined { color: #4E342E; }
.category-card[data-color="cyan"] .material-icons-outlined { color: #00838F; }
.category-card[data-color="pink"] .material-icons-outlined { color: #AD1457; }
.category-card[data-color="amber"] .material-icons-outlined { color: #FF8F00; }

.category-name { font-size: var(--font-m); font-weight: 700; line-height: 1.3; margin-bottom: 4px; }
.category-count { font-size: var(--font-xs); color: var(--text-secondary); font-weight: 500; }

/* ══════════════════════════════ MODAL ══════════════════════════════ */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 1000;
    justify-content: center;
    align-items: flex-end;
}

.modal-overlay.active { display: flex; animation: fadeIn 0.2s ease; }

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideUp { from { transform: translateY(100%); } to { transform: translateY(0); } }
@keyframes fadeSlideUp { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }

.modal-content {
    background: var(--card-background);
    border-radius: var(--radius-l) var(--radius-l) 0 0;
    width: 100%;
    max-width: 480px;
    max-height: 70vh;
    animation: slideUp 0.3s ease;
    display: flex;
    flex-direction: column;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px var(--padding-l);
    border-bottom: 1px solid var(--border);
}

.modal-header h3 { font-size: var(--font-xl); font-weight: 700; }

.modal-close {
    width: 32px; height: 32px;
    border: none; background: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: var(--text-secondary);
}

.modal-close:active { background: rgba(0,0,0,0.05); }
.modal-body { overflow-y: auto; -webkit-overflow-scrolling: touch; padding-bottom: env(safe-area-inset-bottom, 20px); }

.currency-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px var(--padding-l);
    cursor: pointer;
    transition: background 0.15s;
    border: none;
    background: none;
    width: 100%;
    text-align: left;
    font-family: inherit;
}

.currency-item:active { background: rgba(0,0,0,0.03); }
.currency-item.selected { background: rgba(21,101,192,0.08); }
.currency-flag { font-size: 28px; }
.currency-info { flex: 1; }
.currency-code { font-size: var(--font-m); font-weight: 600; }
.currency-country { font-size: var(--font-s); color: var(--text-secondary); }
.currency-symbol { font-size: var(--font-l); font-weight: 600; color: var(--primary); }
.currency-check { color: var(--primary); font-size: 20px; display: none; }
.currency-item.selected .currency-check { display: block; }

/* ══════════════════════════════ SETTINGS ══════════════════════════════ */
.settings-body { padding: var(--padding-l); }
.settings-group { margin-bottom: 24px; }

.settings-group-title {
    font-size: var(--font-s);
    font-weight: 600;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.settings-card {
    background: var(--card-background);
    border-radius: var(--radius-m);
    box-shadow: 0 1px 6px var(--shadow);
    overflow: hidden;
}

.settings-item {
    display: flex;
    align-items: center;
    padding: 16px;
    gap: 12px;
    cursor: pointer;
    transition: background 0.15s;
    border: none;
    background: none;
    width: 100%;
    text-align: left;
    font-family: inherit;
    border-bottom: 1px solid var(--border);
}

.settings-item:last-child { border-bottom: none; }
.settings-item:active { background: rgba(0,0,0,0.03); }

.settings-item-icon {
    width: 40px; height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(21,101,192,0.1);
    flex-shrink: 0;
}

.settings-item-icon .material-icons-outlined { font-size: 20px; color: var(--primary); }
.settings-item-text { flex: 1; }
.settings-item-label { font-size: var(--font-m); font-weight: 500; }
.settings-item-value { font-size: var(--font-s); color: var(--text-secondary); margin-top: 2px; }
.settings-item-arrow { color: var(--text-hint); font-size: 18px; }

/* ══════════════════════════════ CALCULATOR LIST ══════════════════════════════ */
.calc-list { padding: var(--padding-l); }

.calc-list-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background: var(--card-background);
    border-radius: var(--radius-m);
    margin-bottom: 10px;
    cursor: pointer;
    transition: transform 0.1s, box-shadow 0.15s;
    box-shadow: 0 2px 8px var(--shadow);
    color: inherit;
}

.calc-list-item:active { transform: scale(0.98); }

.calc-list-icon {
    width: 46px; height: 46px;
    border-radius: var(--radius-s);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.calc-list-icon .material-icons-outlined { font-size: 22px; }
.calc-list-text { flex: 1; min-width: 0; }
.calc-list-name { font-size: var(--font-m); font-weight: 600; }

.calc-list-desc {
    font-size: var(--font-s);
    color: var(--text-secondary);
    margin-top: 3px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.calc-list-arrow { color: var(--text-hint); font-size: 14px; }

/* ══════════════════════════════ CALCULATOR FORM ══════════════════════════════ */
.calc-form { padding: var(--padding-l); }

.calc-meta { margin-bottom: 16px; }

.category-badge {
    display: inline-block;
    font-size: var(--font-xs);
    font-weight: 700;
    padding: 4px 10px;
    border-radius: var(--radius-round);
    margin-bottom: 10px;
}

.calc-meta-row {
    display: flex;
    align-items: flex-start;
    gap: 8px;
}

.calc-desc {
    flex: 1;
    font-size: var(--font-m);
    color: var(--text-secondary);
    line-height: 1.35;
    margin: 0;
}

.hiw-chip {
    display: inline-flex;
    align-items: center;
    gap: 2px;
    flex-shrink: 0;
    padding: 4px 8px;
    border-radius: var(--radius-round);
    border: 1px solid;
    font-family: inherit;
    font-size: var(--font-xs);
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
    background: transparent;
}

.hiw-chip .material-icons,
.hiw-chip .material-icons-outlined { font-size: 14px; }

.hiw-panel {
    margin-top: 12px;
    padding: 14px;
    background: var(--card-background);
    border-radius: var(--radius-m);
    border: 1px solid;
    box-shadow: 0 1px 6px var(--shadow);
}

.hiw-panel-title {
    font-size: var(--font-m);
    font-weight: 700;
    margin-bottom: 10px;
}

.calc-form-card {
    background: var(--card-background);
    border-radius: var(--radius-m);
    padding: 20px;
    box-shadow: 0 2px 10px var(--shadow);
    margin-bottom: 16px;
}

.calc-card-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: var(--font-m);
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.calc-card-title .material-icons-outlined { font-size: 20px; }

.calc-field { margin-bottom: 18px; }
.calc-field:last-of-type { margin-bottom: 8px; }

.calc-label-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    margin-bottom: 6px;
}

.calc-label {
    font-size: var(--font-s);
    font-weight: 600;
    color: var(--text-secondary);
    display: block;
    letter-spacing: 0.2px;
}

.tenure-toggle {
    display: inline-flex;
    align-items: stretch;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--border);
    height: 28px;
}

.tenure-opt {
    min-width: 40px;
    padding: 0 10px;
    border: none;
    background: var(--card-background);
    color: var(--text-secondary);
    font-family: inherit;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

.tenure-opt + .tenure-opt { border-left: 1px solid var(--border); }
.tenure-opt.active { color: #fff; }

.calc-input-wrapper { position: relative; }

.calc-input-prefix {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    font-size: var(--font-l);
    font-weight: 600;
    color: var(--primary);
    pointer-events: none;
}

.calc-input-suffix {
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    pointer-events: none;
}

.calc-input {
    width: 100%;
    padding: 13px 16px;
    font-size: var(--font-l);
    font-family: inherit;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-s);
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
    color: var(--text-primary);
    background: var(--background);
}

.calc-input.has-prefix { padding-left: 40px; }
.calc-input.has-suffix { padding-right: 44px; }
.calc-input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(21,101,192,0.1); }
.calc-input::placeholder { color: var(--text-hint); }

.calc-actions {
    display: flex;
    gap: 12px;
    margin-top: 16px;
}

.calc-btn {
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 14px 12px;
    font-size: var(--font-m);
    font-weight: 700;
    font-family: inherit;
    border-radius: var(--radius-m);
    cursor: pointer;
    transition: transform 0.1s, opacity 0.15s;
    letter-spacing: 0.2px;
}

.calc-btn .material-icons { font-size: 18px; }
.calc-btn:active { transform: scale(0.98); opacity: 0.9; }

.calc-btn.primary {
    color: white;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border: none;
}

.calc-btn.outline {
    color: var(--primary);
    background: transparent;
    border: 1.5px solid var(--primary);
}

/* Result Card */
.calc-result {
    display: none;
    background: var(--card-background);
    border-radius: var(--radius-m);
    padding: 24px 20px;
    box-shadow: 0 2px 12px var(--shadow);
    border-left: 4px solid var(--primary);
    animation: fadeSlideUp 0.3s ease;
}

.calc-result.visible { display: block; }

.calc-result-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
}

.calc-result-header .material-icons { color: var(--success); font-size: 20px; }

.calc-result-title {
    font-size: var(--font-s);
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.calc-result-value {
    font-size: 30px;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 4px;
    word-break: break-all;
}

.calc-result-detail {
    font-size: var(--font-s);
    color: var(--text-secondary);
    line-height: 1.8;
}

.hiw-formula {
    background: #E3F2FD;
    border-radius: var(--radius-s);
    padding: 14px;
    margin-bottom: 14px;
    font-family: 'Courier New', monospace;
    font-size: var(--font-s);
    color: var(--primary-dark);
    line-height: 1.6;
    font-weight: 600;
    word-break: break-word;
    overflow-wrap: anywhere;
}

.hiw-steps { list-style: none; padding: 0; }

.hiw-step {
    display: flex;
    gap: 12px;
    padding: 10px 0;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.hiw-step:last-child { border-bottom: none; }

.hiw-step-num {
    width: 26px; height: 26px;
    border-radius: 50%;
    background: var(--primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-xs);
    font-weight: 700;
    flex-shrink: 0;
    margin-top: 2px;
}

.hiw-step-text {
    font-size: var(--font-s);
    color: var(--text-secondary);
    line-height: 1.6;
}

.hiw-step-text strong { color: var(--text-primary); }

.hiw-example {
    background: #FFF3E0;
    border-radius: var(--radius-s);
    padding: 14px;
    margin-top: 14px;
}

.hiw-example-title {
    font-size: var(--font-s);
    font-weight: 700;
    color: var(--warning);
    margin-bottom: 6px;
}

.hiw-example-text {
    font-size: var(--font-s);
    color: var(--text-secondary);
    line-height: 1.7;
}

.bottom-spacer { height: 40px; }