:root {
    color-scheme: light;
    --accent: #ff5722;
    --accent-hover: #e64a19;
    --accent-soft: #fff3ee;
    --focus: #155eef;
    --focus-ring: rgba(21, 94, 239, 0.16);
    --danger: #b42318;
    --danger-ring: rgba(180, 35, 24, 0.12);
    --ink: #202124;
    --muted: #667085;
    --line: #e4e7ec;
    --line-strong: #cfd4dc;
    --surface: #ffffff;
    --surface-soft: #fafbfc;
    --surface-raised: #f8fafc;
    --bg: #f6f7f9;
    --overlay: rgba(32, 33, 36, 0.34);
    --shadow: rgba(32, 33, 36, 0.08);
    --shadow-strong: rgba(32, 33, 36, 0.14);
    --shadow-panel: rgba(32, 33, 36, 0.18);
    --shadow-modal: rgba(32, 33, 36, 0.22);
    --control-hover: rgba(32, 33, 36, 0.08);
    --accent-line: #ffd3c4;
    --button-shadow: rgba(255, 87, 34, 0.18);
    --footer: #6d747c;
    --toast-success-bg: #eefaf2;
    --toast-success-border: #8fd19e;
    --toast-success-text: #14532d;
    --toast-success-icon: #31a05f;
    --toast-info-bg: #eff6ff;
    --toast-info-border: #93c5fd;
    --toast-info-text: #1e3a8a;
    --toast-info-icon: #1d74d8;
    --toast-warning-bg: #fff8e8;
    --toast-warning-border: #f5c465;
    --toast-warning-text: #7c4a03;
    --toast-warning-icon: #f0a700;
    --toast-error-bg: #fff1f0;
    --toast-error-border: #f1a2a0;
    --toast-error-text: #8a1f17;
    --toast-error-icon: #ef4a3a;
    --form-gap: 22px;
    --field-gap: 12px;
    --inner-gap: 12px;
}

html[data-theme="dark"] {
    color-scheme: dark;
    --accent: #ff7043;
    --accent-hover: #ff8a65;
    --accent-soft: #3a211a;
    --focus: #8ab4ff;
    --focus-ring: rgba(138, 180, 255, 0.22);
    --danger: #ff9b92;
    --danger-ring: rgba(255, 155, 146, 0.18);
    --ink: #f4f6f8;
    --muted: #a8b0bb;
    --line: #2f3845;
    --line-strong: #485263;
    --surface: #161b22;
    --surface-soft: #202733;
    --surface-raised: #1c2430;
    --bg: #0f131a;
    --overlay: rgba(4, 7, 12, 0.68);
    --shadow: rgba(0, 0, 0, 0.34);
    --shadow-strong: rgba(0, 0, 0, 0.48);
    --shadow-panel: rgba(0, 0, 0, 0.5);
    --shadow-modal: rgba(0, 0, 0, 0.58);
    --control-hover: rgba(255, 255, 255, 0.08);
    --accent-line: #6f3a2a;
    --button-shadow: rgba(255, 112, 67, 0.2);
    --footer: #8e97a5;
    --toast-success-bg: #11291b;
    --toast-success-border: #2f8f57;
    --toast-success-text: #b9f6ca;
    --toast-success-icon: #35b86b;
    --toast-info-bg: #14233a;
    --toast-info-border: #3265a8;
    --toast-info-text: #c6dbff;
    --toast-info-icon: #5d9cec;
    --toast-warning-bg: #2f240d;
    --toast-warning-border: #a97718;
    --toast-warning-text: #ffe5a3;
    --toast-warning-icon: #d99a12;
    --toast-error-bg: #351815;
    --toast-error-border: #a5433e;
    --toast-error-text: #ffd1cc;
    --toast-error-icon: #f05d51;
}

* {
    box-sizing: border-box;
    letter-spacing: 0;
}

[hidden] {
    display: none !important;
}

html {
    min-height: 100%;
    background: var(--bg);
    overflow-x: clip;
}

body {
    min-height: 100svh;
    min-height: 100dvh;
    margin: 0;
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    overflow-x: hidden;
    overflow-y: auto;
    background: var(--bg);
    color: var(--ink);
    font-family: Arial, sans-serif;
}

.container {
    width: min(100%, 440px);
    padding: 24px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 8px;
    box-shadow: 0 8px 22px var(--shadow);
}

.app-header {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 26px;
}

.app-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
}

.mobile-menu-toggle,
.mobile-menu,
.mobile-menu-backdrop,
.about-modal {
    display: none;
}

.theme-action {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 40px;
    padding: 8px 12px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 8px;
    box-shadow: 0 8px 22px var(--shadow);
    color: var(--ink);
    cursor: pointer;
    font-family: inherit;
    font-size: 0.88rem;
    font-weight: 800;
    line-height: 1;
    transition: border-color 160ms ease, box-shadow 160ms ease, color 160ms ease;
}

.theme-action:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.desktop-theme-action {
    position: fixed;
    top: calc(18px + env(safe-area-inset-top));
    right: 20px;
    z-index: 7;
    gap: 7px;
    min-height: 36px;
    padding: 8px 10px;
    background: var(--surface);
    border-color: var(--line);
    box-shadow: 0 4px 12px var(--shadow);
    color: var(--ink);
    font-size: 0.84rem;
    font-weight: 700;
}

.desktop-theme-action:hover {
    background: var(--surface-soft);
    border-color: var(--line-strong);
    color: var(--ink);
}

.theme-action-label {
    min-width: 72px;
    text-align: left;
}

.theme-action-icon {
    position: relative;
    flex: 0 0 auto;
    width: 18px;
    height: 18px;
    background: currentColor;
    border-radius: 0;
    box-shadow: none;
    color: var(--muted);
    mask: url("data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2024%2024'%20fill='none'%20stroke='black'%20stroke-width='2'%20stroke-linecap='round'%20stroke-linejoin='round'%3E%3Cpath%20d='M21%2012.79A9%209%200%201%201%2011.21%203%207%207%200%200%200%2021%2012.79Z'/%3E%3C/svg%3E") center / contain no-repeat;
    -webkit-mask: url("data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2024%2024'%20fill='none'%20stroke='black'%20stroke-width='2'%20stroke-linecap='round'%20stroke-linejoin='round'%3E%3Cpath%20d='M21%2012.79A9%209%200%201%201%2011.21%203%207%207%200%200%200%2021%2012.79Z'/%3E%3C/svg%3E") center / contain no-repeat;
    transition: background 180ms ease, box-shadow 180ms ease, color 180ms ease, transform 180ms ease;
}

.theme-action:hover .theme-action-icon {
    color: var(--accent);
}

.theme-action-icon::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 2px;
    height: 2px;
    border-radius: 999px;
    background: transparent;
    box-shadow:
        0 -10px 0 currentColor,
        0 10px 0 currentColor,
        10px 0 0 currentColor,
        -10px 0 0 currentColor,
        7px 7px 0 currentColor,
        -7px 7px 0 currentColor,
        7px -7px 0 currentColor,
        -7px -7px 0 currentColor;
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.4);
    transition: opacity 180ms ease, transform 180ms ease;
}

html[data-theme="dark"] .theme-action-icon {
    background: currentColor;
    border-radius: 0;
    color: inherit;
    mask: url("data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2024%2024'%3E%3Cpath%20d='M11%205V1h2v4h-2Zm0%2018v-4h2v4h-2Zm8-10v-2h4v2h-4ZM1%2013v-2h4v2H1Zm16.65-5.25-1.4-1.4%202.8-2.85%201.45%201.45-2.85%202.8ZM4.95%2020.5%203.5%2019.05l2.85-2.8%201.4%201.4-2.8%202.85Zm14.1%200-2.8-2.85%201.4-1.4%202.85%202.8-1.45%201.45ZM6.35%207.75%203.5%204.95%204.95%203.5l2.8%202.85-1.4%201.4ZM12%2018q-2.5%200-4.25-1.75T6%2012q0-2.5%201.75-4.25T12%206q2.5%200%204.25%201.75T18%2012q0%202.5-1.75%204.25T12%2018Zm0-2q1.65%200%202.825-1.175T16%2012q0-1.65-1.175-2.825T12%208q-1.65%200-2.825%201.175T8%2012q0%201.65%201.175%202.825T12%2016Z'/%3E%3C/svg%3E") center / contain no-repeat;
    -webkit-mask: url("data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2024%2024'%3E%3Cpath%20d='M11%205V1h2v4h-2Zm0%2018v-4h2v4h-2Zm8-10v-2h4v2h-4ZM1%2013v-2h4v2H1Zm16.65-5.25-1.4-1.4%202.8-2.85%201.45%201.45-2.85%202.8ZM4.95%2020.5%203.5%2019.05l2.85-2.8%201.4%201.4-2.8%202.85Zm14.1%200-2.8-2.85%201.4-1.4%202.85%202.8-1.45%201.45ZM6.35%207.75%203.5%204.95%204.95%203.5l2.8%202.85-1.4%201.4ZM12%2018q-2.5%200-4.25-1.75T6%2012q0-2.5%201.75-4.25T12%206q2.5%200%204.25%201.75T18%2012q0%202.5-1.75%204.25T12%2018Zm0-2q1.65%200%202.825-1.175T16%2012q0-1.65-1.175-2.825T12%208q-1.65%200-2.825%201.175T8%2012q0%201.65%201.175%202.825T12%2016Z'/%3E%3C/svg%3E") center / contain no-repeat;
    box-shadow: none;
}

html[data-theme="dark"] .theme-action-icon::before {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.4);
}

.desktop-theme-action .theme-action-label {
    min-width: auto;
}

.desktop-theme-action .theme-action-icon {
    width: 16px;
    height: 16px;
    color: var(--accent);
}

html[data-theme="dark"] .desktop-theme-action {
    background: var(--surface);
    border-color: var(--line);
    color: var(--ink);
}

html[data-theme="dark"] .desktop-theme-action:hover {
    background: var(--surface-soft);
    border-color: var(--line-strong);
    color: var(--ink);
}

html[data-theme="dark"] .desktop-theme-action .theme-action-icon {
    color: var(--accent);
}

h1 {
    margin: 0;
    color: var(--ink);
    font-size: 1.1rem;
    line-height: 1.25;
    text-align: center;
}

.field-group {
    margin: 0;
}

#calculator-form {
    display: flex;
    flex-direction: column;
    gap: var(--form-gap);
}

label {
    display: block;
    margin-bottom: 6px;
    font-size: 0.95rem;
    font-weight: 700;
}

.helper {
    margin: 0 0 var(--field-gap);
    color: var(--muted);
    font-size: 0.92rem;
    line-height: 1.45;
}

.amount-field {
    display: flex;
    min-height: 50px;
    align-items: center;
    background: var(--surface);
    border: 1px solid var(--line-strong);
    border-radius: 8px;
    transition: border-color 160ms ease, box-shadow 160ms ease;
}

.amount-field:focus-within,
.fee-field input:focus-visible,
.fee-toggle:focus-visible,
.mobile-menu-toggle:focus-visible,
.mobile-menu-close:focus-visible,
.mobile-menu-item:focus-visible,
.theme-action:focus-visible,
.about-modal-close:focus-visible,
.primary-button:focus-visible {
    border-color: var(--focus);
    box-shadow: 0 0 0 3px var(--focus-ring);
    outline: none;
}

.amount-field.is-invalid {
    border-color: var(--danger);
    box-shadow: 0 0 0 3px var(--danger-ring);
}

.currency-prefix {
    flex: 0 0 auto;
    padding-left: 13px;
    color: var(--muted);
    font-weight: 700;
}

input {
    width: 100%;
    min-height: 48px;
    padding: 12px;
    border: 0;
    border-radius: 8px;
    background: transparent;
    color: var(--ink);
    font-size: 1rem;
}

input:focus {
    outline: none;
}

.error-message,
.copy-status {
    margin: 0;
    font-size: 0.84rem;
    line-height: 1.4;
}

.error-message:not(:empty),
.copy-status:not(:empty) {
    margin-top: 8px;
}

.error-message {
    color: var(--danger);
}

.copy-status {
    color: var(--focus);
    text-align: center;
}

.error-message,
.copy-status:empty {
    display: none;
}

.toast {
    position: fixed;
    top: calc(20px + env(safe-area-inset-top));
    right: auto;
    bottom: auto;
    left: 50%;
    z-index: 10;
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: center;
    gap: 10px;
    width: max-content;
    max-width: min(390px, calc(100vw - 40px));
    padding: 9px 10px;
    background: var(--surface-raised);
    border: 1px solid var(--line-strong);
    border-radius: 8px;
    box-shadow: 0 10px 24px var(--shadow-strong);
    color: var(--ink);
    font-size: 0.86rem;
    font-weight: 700;
    line-height: 1.35;
    opacity: 0;
    transform: translate(-50%, -10px);
    transition: opacity 180ms ease, transform 180ms ease;
}

.toast-message {
    min-width: 0;
    overflow-wrap: anywhere;
}

.toast-icon {
    display: inline-grid;
    flex: 0 0 auto;
    place-items: center;
    width: 1.45em;
    height: 1.45em;
    border-radius: 50%;
    color: #ffffff;
    font-size: 0.82rem;
    font-weight: 800;
    line-height: 1;
}

.toast-close {
    display: inline-grid;
    width: 24px;
    height: 24px;
    margin: -2px -3px -2px 0;
    padding: 0;
    place-items: center;
    background: transparent;
    border: 0;
    border-radius: 6px;
    color: currentColor;
    cursor: pointer;
    font-size: 1rem;
    line-height: 1;
    opacity: 0.62;
}

.toast-close:hover,
.toast-close:focus-visible {
    background: var(--control-hover);
    opacity: 0.9;
    outline: none;
}

.toast.is-visible {
    opacity: 1;
    transform: translate(-50%, 0);
}

.toast.is-success {
    background: var(--toast-success-bg);
    border-color: var(--toast-success-border);
    color: var(--toast-success-text);
}

.toast.is-success .toast-icon {
    position: relative;
    background: var(--toast-success-icon);
}

.toast.is-success .toast-icon::before {
    content: "";
    width: 0.64em;
    height: 0.34em;
    margin-top: -0.1em;
    border-bottom: 2px solid currentColor;
    border-left: 2px solid currentColor;
    transform: rotate(-45deg);
}

.toast.is-info {
    background: var(--toast-info-bg);
    border-color: var(--toast-info-border);
    color: var(--toast-info-text);
}

.toast.is-info .toast-icon {
    background: var(--toast-info-icon);
}

.toast.is-info .toast-icon::before {
    content: "i";
}

.toast.is-warning {
    background: var(--toast-warning-bg);
    border-color: var(--toast-warning-border);
    color: var(--toast-warning-text);
}

.toast.is-warning .toast-icon {
    background: var(--toast-warning-icon);
}

.toast.is-warning .toast-icon::before {
    content: "!";
}

.toast.is-error {
    background: var(--toast-error-bg);
    border-color: var(--toast-error-border);
    color: var(--toast-error-text);
}

.toast.is-error .toast-icon {
    background: var(--toast-error-icon);
}

.toast.is-error .toast-icon::before {
    content: "×";
}

.fee-summary {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: stretch;
    gap: 10px 8px;
    margin-top: 0;
}

.fee-summary-copy {
    grid-column: 1 / -1;
}

.fee-summary-title {
    margin: 0 0 4px;
    color: var(--ink);
    font-size: 0.95rem;
    font-weight: 700;
    line-height: 1.3;
}

.fee-summary-helper {
    margin: 0;
    color: var(--muted);
    font-size: 0.88rem;
    line-height: 1.45;
}

.fee-chips {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
}

.fee-chip {
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-width: 0;
    min-height: 54px;
    padding: 8px 6px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 8px;
    color: var(--muted);
    font-size: 0.74rem;
    line-height: 1.25;
    text-align: center;
}

.fee-chip b {
    display: block;
    margin-top: 4px;
    color: var(--ink);
    font-size: 0.8rem;
}

.fee-toggle {
    display: inline-grid;
    width: 46px;
    min-height: 46px;
    padding: 0;
    place-items: center;
    background: transparent;
    border: 1px solid var(--line-strong);
    border-radius: 8px;
    color: var(--ink);
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 700;
}

.settings-icon {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

.fee-toggle:hover {
    background: var(--surface);
    border-color: var(--accent);
    color: var(--accent);
}

.fee-editor {
    margin-top: 0;
    padding: 12px;
    background: var(--surface-soft);
    border: 1px solid var(--line);
    border-radius: 8px;
}

.fee-grid {
    display: grid;
    gap: 10px;
}

.fee-field {
    margin: 0;
}

.fee-field span {
    display: block;
    margin-bottom: 6px;
    color: var(--muted);
    font-size: 0.8rem;
}

.fee-field .fee-label-mobile {
    display: none;
}

.fee-field input {
    min-height: 44px;
    padding: 10px 11px;
    background: var(--surface);
    border: 1px solid var(--line-strong);
}

.fee-save {
    width: 100%;
    min-height: 44px;
    margin-top: 12px;
    padding: 10px 12px;
    background: transparent;
    border: 1px solid var(--line-strong);
    border-radius: 8px;
    color: var(--ink);
    cursor: pointer;
    font-size: 0.92rem;
    font-weight: 700;
}

.fee-save:hover {
    background: var(--surface);
    border-color: var(--accent);
    color: var(--accent);
}

.fee-save:focus-visible {
    border-color: var(--focus);
    box-shadow: 0 0 0 3px var(--focus-ring);
    outline: none;
}

.result {
    margin-top: 0;
    padding-top: 22px;
    border-top: 1px solid var(--line);
}

.result-label {
    margin: 0;
    color: var(--muted);
    font-size: 0.86rem;
    font-weight: 700;
    text-align: center;
}

.harga-final {
    margin: 8px 0 18px;
    color: var(--accent);
    font-size: 1.8rem;
    font-weight: 800;
    line-height: 1.2;
    overflow-wrap: anywhere;
    text-align: center;
}

.summary-list {
    border: 1px solid var(--line);
    border-radius: 8px;
    overflow: hidden;
}

.summary-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 12px;
    align-items: center;
    min-height: 52px;
    padding: 12px;
}

.summary-row + .summary-row {
    border-top: 1px solid var(--line);
}

.summary-row span {
    min-width: 0;
    color: var(--muted);
    font-size: 0.92rem;
}

.summary-row b {
    color: var(--ink);
    font-size: 0.94rem;
    overflow-wrap: anywhere;
    text-align: right;
}

.summary-total {
    margin: 0;
    background: var(--accent-soft);
}

.summary-total span,
.summary-total b {
    color: var(--ink);
    font-weight: 800;
}

.primary-button {
    width: 100%;
    min-height: 48px;
    margin-top: 0;
    padding: 12px;
    background: var(--accent);
    border: 1px solid var(--accent);
    border-radius: 8px;
    color: #ffffff;
    cursor: pointer;
    font-size: 0.96rem;
    font-weight: 700;
}

.primary-button:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
}

.empty-state {
    display: none;
}

.seo-disclosure {
    margin-top: 26px;
}

.seo-disclosure summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    width: 100%;
    min-height: 48px;
    padding: 12px 14px;
    background: var(--surface-soft);
    border: 1px solid var(--line);
    border-radius: 8px;
    color: var(--ink);
    cursor: pointer;
    font-size: 0.92rem;
    font-weight: 700;
    line-height: 1.4;
    list-style: none;
}

.seo-disclosure summary::-webkit-details-marker {
    display: none;
}

.seo-disclosure summary::after {
    content: "+";
    flex: 0 0 auto;
    color: var(--accent);
    font-size: 1.15rem;
    font-weight: 800;
    line-height: 1;
}

.seo-disclosure[open] summary {
    border-color: var(--accent-line);
    border-bottom-right-radius: 0;
    border-bottom-left-radius: 0;
}

.seo-disclosure[open] summary::after {
    content: "-";
}

.seo-disclosure summary:hover {
    border-color: var(--accent);
}

.seo-disclosure summary:focus-visible {
    border-color: var(--focus);
    box-shadow: 0 0 0 3px var(--focus-ring);
    outline: none;
}

.seo-content {
    margin-top: 0;
    padding: 20px 18px 18px;
    border: 1px solid var(--line);
    border-top: 0;
    border-bottom-right-radius: 8px;
    border-bottom-left-radius: 8px;
}

.seo-content-header {
    display: grid;
    gap: 10px;
}

.seo-content h2,
.seo-content h3,
.seo-content h4 {
    margin: 0;
    color: var(--ink);
}

.seo-content h2 {
    font-size: 1rem;
    line-height: 1.35;
}

.seo-content h3 {
    font-size: 0.94rem;
    line-height: 1.35;
}

.seo-content h4 {
    font-size: 0.9rem;
    line-height: 1.45;
}

.seo-content p,
.seo-content li {
    color: var(--muted);
    font-size: 0.9rem;
    line-height: 1.6;
}

.seo-content p {
    margin: 0;
}

.seo-note {
    font-size: 0.84rem;
}

.seo-block {
    display: grid;
    gap: 10px;
    margin-top: 18px;
    padding-top: 18px;
    border-top: 1px solid var(--line);
}

.seo-content ol,
.seo-content ul {
    margin: 0;
    padding-left: 20px;
}

.seo-formula {
    padding: 12px;
    background: var(--surface-soft);
    border: 1px solid var(--line);
    border-radius: 8px;
    color: var(--ink) !important;
    font-size: 0.9rem;
    font-weight: 700;
    line-height: 1.5;
}

.faq-item {
    display: grid;
    gap: 8px;
}

.faq-item + .faq-item {
    margin-top: 2px;
    padding-top: 14px;
    border-top: 1px dashed var(--line);
}

.related-guides-disclosure {
    margin-top: 12px;
}

.related-guides-disclosure summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    width: 100%;
    min-height: 48px;
    padding: 12px 14px;
    background: var(--surface-soft);
    border: 1px solid var(--line);
    border-radius: 8px;
    color: var(--ink);
    cursor: pointer;
    font-size: 0.92rem;
    font-weight: 700;
    line-height: 1.4;
    list-style: none;
}

.related-guides-disclosure summary::-webkit-details-marker {
    display: none;
}

.related-guides-disclosure summary::after {
    content: "+";
    flex: 0 0 auto;
    color: var(--accent);
    font-size: 1.15rem;
    font-weight: 800;
    line-height: 1;
}

.related-guides-disclosure[open] summary {
    border-color: var(--accent-line);
    border-bottom-right-radius: 0;
    border-bottom-left-radius: 0;
}

.related-guides-disclosure[open] summary::after {
    content: "-";
}

.related-guides-disclosure summary:hover {
    border-color: var(--accent);
}

.related-guides-disclosure summary:focus-visible {
    border-color: var(--focus);
    box-shadow: 0 0 0 3px var(--focus-ring);
    outline: none;
}

.related-guides {
    margin-top: 0;
    padding: 18px 18px 18px;
    border: 1px solid var(--line);
    border-top: 0;
    border-bottom-right-radius: 8px;
    border-bottom-left-radius: 8px;
}

.related-guide-list {
    display: grid;
    gap: 10px;
}

.related-guide-card {
    display: grid;
    gap: 6px;
    padding: 14px;
    background: var(--surface-soft);
    border: 1px solid var(--line);
    border-radius: 8px;
    color: var(--ink);
    text-decoration: none;
    transition: border-color 160ms ease, color 160ms ease, background 160ms ease;
}

.related-guide-card:hover {
    border-color: var(--accent);
}

.related-guide-card:focus-visible {
    border-color: var(--focus);
    box-shadow: 0 0 0 3px var(--focus-ring);
    outline: none;
}

.related-guide-card strong {
    font-size: 0.92rem;
    line-height: 1.4;
}

.related-guide-card span {
    color: var(--muted);
    font-size: 0.86rem;
    line-height: 1.55;
}

footer {
    margin-top: 14px;
    color: var(--footer);
    font-size: 0.8rem;
    text-align: center;
}

footer a {
    margin-left: 0.2em;
}

.heart-icon {
    width: 1.08em;
    height: 1.08em;
    margin: 0;
    fill: var(--accent);
    vertical-align: -0.16em;
}

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

@media (min-width: 701px) {
    .container {
        padding: 22px 24px 24px;
    }

    .app-header {
        gap: 14px;
        margin-bottom: 24px;
    }

    #calculator-form {
        gap: 20px;
    }

    .fee-summary {
        gap: 12px 8px;
    }

    .primary-button {
        margin-top: 0;
    }

    .fee-editor {
        padding: 14px;
    }

    .fee-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 12px;
        align-items: start;
    }

    .fee-field span {
        margin-bottom: 7px;
        font-size: 0.8rem;
        line-height: 1.25;
        white-space: nowrap;
    }

    .fee-field input {
        min-height: 46px;
        padding: 10px 12px;
        font-size: 1rem;
    }

    .fee-save {
        min-height: 42px;
        margin-top: 14px;
        padding: 9px 12px;
    }

}

@media (max-width: 700px) {
    .desktop-theme-action {
        display: none;
    }

    body {
        padding: 0;
        justify-content: flex-start;
        align-items: stretch;
        background: var(--bg);
    }

    .container {
        flex: 1;
        display: flex;
        flex-direction: column;
        width: 100%;
        max-width: none;
        padding: calc(80px + env(safe-area-inset-top)) 20px 14px;
        background: var(--bg);
        border: 0;
        border-radius: 0;
        box-shadow: none;
        overflow-x: clip;
    }

    #calculator-form {
        flex: 0 0 auto;
        gap: 14px;
    }

    .app-header {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 4;
        align-items: center;
        justify-content: flex-start;
        gap: 10px;
        margin: 0;
        padding: calc(14px + env(safe-area-inset-top)) 20px 14px;
        background: var(--surface);
        border-bottom: 1px solid var(--line);
        box-shadow: 0 6px 18px var(--shadow);
    }

    .app-icon {
        flex: 0 0 auto;
        width: 38px;
        height: 38px;
    }

    h1 {
        flex: 1;
        font-size: 1.08rem;
        font-weight: 800;
        text-align: left;
    }

    .mobile-menu-toggle {
        flex: 0 0 auto;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        flex-direction: column;
        gap: 4px;
        width: 38px;
        min-height: 38px;
        padding: 0;
        background: var(--surface-soft);
        border: 1px solid var(--line-strong);
        border-radius: 8px;
        color: var(--ink);
        cursor: pointer;
    }

    .mobile-menu-toggle span {
        display: block;
        width: 17px;
        height: 2px;
        background: currentColor;
        border-radius: 999px;
    }

    body.is-mobile-menu-open {
        overflow: hidden;
    }

    .mobile-menu-backdrop {
        position: fixed;
        inset: 0;
        z-index: 18;
        display: block;
        background: var(--overlay);
        opacity: 0;
        transition: opacity 180ms ease;
    }

    .mobile-menu-backdrop.is-open {
        opacity: 1;
    }

    .mobile-menu-backdrop[hidden] {
        display: none;
    }

    .mobile-menu {
        position: fixed;
        top: 0;
        right: 0;
        bottom: 0;
        z-index: 19;
        display: flex;
        flex-direction: column;
        gap: 10px;
        width: min(300px, calc(100vw - 52px));
        padding: calc(18px + env(safe-area-inset-top)) 16px calc(18px + env(safe-area-inset-bottom));
        background: var(--surface);
        border-left: 1px solid var(--line);
        box-shadow: -18px 0 36px var(--shadow-panel);
        transform: translateX(100%);
        transition: transform 180ms ease;
    }

    .mobile-menu.is-open {
        transform: translateX(0);
    }

    .mobile-menu[hidden] {
        display: none;
    }

    .mobile-menu-top {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 12px;
        min-height: 38px;
        margin-bottom: 4px;
    }

    .mobile-menu-heading {
        color: var(--ink);
        font-size: 1rem;
        font-weight: 800;
        line-height: 1.3;
    }

    .mobile-menu-close {
        display: inline-grid;
        flex: 0 0 auto;
        width: 36px;
        height: 36px;
        padding: 0;
        place-items: center;
        background: var(--surface-soft);
        border: 1px solid var(--line);
        border-radius: 8px;
        color: var(--ink);
        cursor: pointer;
        font-size: 1rem;
        line-height: 1;
    }

    .mobile-menu-item {
        width: 100%;
        min-height: 46px;
        padding: 11px 12px;
        display: flex;
        align-items: center;
        gap: 10px;
        background: var(--surface-soft);
        border: 1px solid var(--line);
        border-radius: 8px;
        color: var(--ink);
        cursor: pointer;
        font-size: 0.94rem;
        font-weight: 700;
        text-align: left;
    }

    .mobile-menu-icon {
        flex: 0 0 auto;
        width: 18px;
        height: 18px;
        fill: none;
        stroke: currentColor;
        stroke-width: 2;
        stroke-linecap: round;
        stroke-linejoin: round;
    }

    .mobile-menu-item span {
        min-width: 0;
        overflow-wrap: anywhere;
    }

    .mobile-menu-item:hover {
        border-color: var(--accent);
        color: var(--accent);
    }

    .mobile-theme-action {
        justify-content: flex-start;
        cursor: pointer;
    }

    .mobile-theme-action .theme-action-icon {
        color: inherit;
    }

    .about-modal {
        position: fixed;
        inset: 0;
        z-index: 20;
        display: grid;
        align-items: end;
        justify-items: center;
        padding: 12px 12px calc(12px + env(safe-area-inset-bottom));
        background: var(--overlay);
    }

    .about-modal[hidden] {
        display: none;
    }

    .about-modal-panel {
        position: relative;
        display: grid;
        gap: 12px;
        width: min(420px, 100%);
        max-height: calc(100dvh - 24px);
        padding: 10px 18px 18px;
        overflow-y: auto;
        background: var(--surface);
        border: 1px solid var(--line-strong);
        border-radius: 8px;
        box-shadow: 0 18px 42px var(--shadow-modal);
    }

    .about-modal-handle {
        justify-self: center;
        width: 42px;
        height: 4px;
        margin-bottom: 2px;
        background: var(--line-strong);
        border-radius: 999px;
    }

    .about-modal-header {
        display: flex;
        align-items: center;
        gap: 12px;
        min-height: 42px;
        padding: 0 52px 12px 0;
        border-bottom: 1px solid var(--line);
    }

    .about-modal-header-icon {
        flex: 0 0 auto;
        width: 34px;
        height: 34px;
        padding: 7px;
        background: var(--accent-soft);
        border: 1px solid var(--accent-line);
        border-radius: 8px;
        color: var(--accent);
        fill: none;
        stroke: currentColor;
        stroke-width: 2;
        stroke-linecap: round;
        stroke-linejoin: round;
    }

    .about-modal-close {
        position: absolute;
        top: 20px;
        right: 18px;
        display: inline-grid;
        width: 36px;
        height: 36px;
        padding: 0;
        place-items: center;
        background: var(--surface);
        border: 1px solid var(--line);
        border-radius: 8px;
        color: var(--muted);
        cursor: pointer;
        font-size: 1rem;
        line-height: 1;
    }

    .about-modal-close:hover {
        border-color: var(--line-strong);
        color: var(--ink);
    }

    .about-modal h2 {
        min-width: 0;
        margin: 0;
        color: var(--ink);
        font-size: 1.08rem;
        font-weight: 800;
        line-height: 1.3;
    }

    .about-modal-body {
        padding-top: 2px;
    }

    .about-modal-body p {
        margin: 0;
        color: var(--muted);
        font-size: 0.9rem;
        font-weight: 400;
        line-height: 1.55;
    }

    .about-modal-body a {
        color: var(--accent);
        font-weight: 800;
        text-decoration: none;
        text-decoration-thickness: 2px;
        text-underline-offset: 3px;
    }

    label {
        margin-bottom: 6px;
        font-size: 0.92rem;
        line-height: 1.3;
    }

    .helper {
        margin-bottom: 12px;
        font-size: 0.9rem;
        line-height: 1.45;
    }

    .field-group {
        margin: 0 -20px;
        padding: 18px 20px 16px;
        background: var(--surface);
        border-bottom: 1px solid var(--line);
    }

    .amount-field {
        min-height: 52px;
        background: var(--surface-soft);
    }

    input {
        min-height: 50px;
        padding-top: 10px;
        padding-bottom: 10px;
    }

    .fee-summary {
        margin: 0 -20px;
        padding: 16px 20px;
        background: var(--surface);
        border-top: 1px solid var(--line);
        border-bottom: 1px solid var(--line);
        gap: 12px 8px;
    }

    .fee-summary-title {
        font-size: 0.92rem;
    }

    .fee-summary-helper {
        font-size: 0.9rem;
    }

    .fee-chips {
        gap: 8px;
    }

    .fee-chip {
        min-height: 52px;
        padding: 7px 6px;
        background: var(--surface-soft);
        font-size: 0.73rem;
    }

    .fee-chip b {
        margin-top: 3px;
        font-size: 0.8rem;
    }

    .fee-toggle {
        width: 50px;
        min-height: 52px;
        background: var(--surface-soft);
        font-size: 0.9rem;
    }

    .fee-field .fee-label-desktop {
        display: none;
    }

    .fee-field .fee-label-mobile {
        display: block;
    }

    .fee-editor {
        margin: -14px -20px 0;
        padding: 16px 20px 18px;
        background: var(--surface);
        border: 0;
        border-bottom: 1px solid var(--line);
        border-radius: 0;
    }

    .fee-grid {
        gap: 12px;
    }

    .fee-field input {
        background: var(--surface-soft);
    }

    .result {
        margin: 0 -20px;
        padding: 18px 20px;
        background: var(--surface);
        border-top: 1px solid var(--line);
        border-bottom: 1px solid var(--line);
    }

    .result-label {
        font-size: 0.84rem;
    }

    .harga-final {
        margin: 7px 0 16px;
        font-size: 1.72rem;
    }

    .summary-row {
        min-height: 48px;
        padding: 11px 12px;
    }

    .summary-row span {
        font-size: 0.9rem;
    }

    .summary-row b {
        font-size: 0.92rem;
    }

    .primary-button {
        min-height: 52px;
        margin-top: 0;
        font-size: 0.94rem;
        font-weight: 700;
        box-shadow: 0 8px 18px var(--button-shadow);
    }

    .empty-state {
        display: none;
    }

    .empty-state-content {
        display: grid;
        place-items: center;
        gap: 8px;
    }

    .empty-state[hidden] {
        display: none;
    }

    .empty-state-icon {
        display: inline-grid;
        width: 40px;
        height: 40px;
        place-items: center;
        background: var(--accent-soft);
        border-radius: 50%;
        color: var(--accent);
        font-size: 0.92rem;
        font-weight: 800;
    }

    .empty-state p {
        max-width: 220px;
        margin: 0;
        font-size: 0.88rem;
        font-weight: 700;
        line-height: 1.45;
    }

    .seo-disclosure {
        margin: 14px -20px 0;
    }

    .seo-disclosure summary {
        min-height: 52px;
        padding: 14px 20px;
        background: var(--surface);
        border-right: 0;
        border-left: 0;
        border-radius: 0;
    }

    .seo-disclosure[open] summary {
        border-right: 0;
        border-left: 0;
        border-bottom-right-radius: 0;
        border-bottom-left-radius: 0;
    }

    .seo-content {
        margin: 0;
        padding: 18px 20px calc(20px + env(safe-area-inset-bottom));
        background: var(--surface);
        border-right: 0;
        border-bottom: 1px solid var(--line);
        border-left: 0;
        border-bottom-right-radius: 0;
        border-bottom-left-radius: 0;
    }

    .seo-content h2 {
        font-size: 0.98rem;
    }

    .seo-content h3 {
        font-size: 0.92rem;
    }

    .seo-content p,
    .seo-content li {
        font-size: 0.89rem;
    }

    .seo-note {
        font-size: 0.82rem;
    }

    .seo-block {
        margin-top: 16px;
        padding-top: 16px;
    }

    .seo-formula {
        padding: 11px 12px;
        font-size: 0.88rem;
    }

    .related-guides-disclosure {
        margin: 10px -20px 0;
    }

    .related-guides-disclosure summary {
        min-height: 52px;
        padding: 14px 20px;
        background: var(--surface);
        border-right: 0;
        border-left: 0;
        border-radius: 0;
    }

    .related-guides-disclosure[open] summary {
        border-right: 0;
        border-left: 0;
        border-bottom-right-radius: 0;
        border-bottom-left-radius: 0;
    }

    .related-guides {
        margin: 0;
        padding: 18px 20px 18px;
        background: var(--surface);
        border-right: 0;
        border-left: 0;
        border-bottom-right-radius: 0;
        border-bottom-left-radius: 0;
    }

    .related-guide-card {
        padding: 13px 14px;
        background: var(--surface);
    }

    footer {
        display: flex;
        justify-content: center;
        align-items: center;
        min-height: 54px;
        margin: 0 -20px;
        padding: 10px 20px calc(12px + env(safe-area-inset-bottom));
        background: var(--surface);
        border-top: 1px solid var(--line);
        line-height: 1.5;
    }

    .toast {
        top: calc(74px + env(safe-area-inset-top));
        right: 50%;
        bottom: auto;
        left: auto;
        width: max-content;
        max-width: calc(100vw - 48px);
        margin: 0;
        padding: 10px 12px;
        box-shadow: 0 8px 20px var(--shadow-strong);
        font-size: 0.82rem;
        font-weight: 700;
        text-align: center;
        transform: translate(50%, -10px);
    }

    .toast.is-visible {
        transform: translate(50%, 0);
    }
}

@media (max-width: 360px) {
    .container {
        padding-right: 20px;
        padding-left: 20px;
    }

    .fee-chips,
    .summary-row {
        grid-template-columns: 1fr;
    }

    .fee-chip {
        display: flex;
        justify-content: space-between;
        gap: 8px;
        text-align: left;
    }

    .fee-chip b {
        margin-top: 0;
    }

    .summary-row {
        gap: 4px;
        align-items: start;
    }

    .summary-row b {
        text-align: left;
    }
}