/* ===== GST Calculator — scoped theme tokens ===== */
.gst-app {
    --gst-bg: #f5f9ff;
    --gst-card-bg: #ffffff;
    --gst-text: #1a1a2e;
    --gst-muted: #6b7280;
    --gst-border: #dbe4f3;
    --gst-primary: #003d93;
    --gst-primary-dark: #002a68;
    --gst-accent: #0d6efd;
    --gst-success: #17803d;
    --gst-danger: #d92d20;
    --gst-highlight-bg: linear-gradient(135deg, #003d93 0%, #0d6efd 100%);
    --gst-shadow: rgba(16, 24, 40, 0.08);
    color: var(--gst-text);
    transition: background-color .3s ease, color .3s ease;
}

/* ===== Layout ===== */
.gst-calculator-section {
    padding: 0rem 0 1rem 0;
}

.gst-card {
    background: var(--gst-card-bg);
    border: 1px solid var(--gst-border);
    border-radius: 1.4rem;
    box-shadow: 0 10px 30px var(--gst-shadow);
    padding: 2.5rem;
    max-width: 90rem;
    margin: 0 auto 3rem auto;
}

.gst-card-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

/* ===== Mode toggle (Add / Remove) ===== */
.gst-mode-toggle {
    display: inline-flex;
    background: var(--gst-bg);
    border: 1px solid var(--gst-border);
    border-radius: 999px;
    padding: 0.4rem;
    gap: 0.4rem;
}

.gst-mode-btn {
    border: 0;
    background: transparent;
    color: var(--gst-muted);
    font-size: 1.5rem;
    font-weight: 600;
    padding: 0.9rem 2rem;
    border-radius: 999px;
    cursor: pointer;
    transition: background-color .2s ease, color .2s ease;
}

.gst-mode-btn.active {
    background: var(--gst-primary);
    color: #fff;
}

.gst-mode-btn:focus-visible,
.gst-rate-btn:focus-visible,
.gst-action-btn:focus-visible,
input:focus-visible,
select:focus-visible,
button:focus-visible {
    outline: 3px solid var(--gst-accent);
    outline-offset: 2px;
}

/* ===== Form fields ===== */
.gst-field {
    margin-bottom: 1rem;
}

.gst-field > label,
.gst-field > .gst-field-label {
    display: block;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--gst-text);
    margin-bottom: 0.8rem;
}

/* .gst-switch is also a direct <label> child of .gst-field, but it needs to
   stay a flex row (track + text side by side) instead of the block layout above. */
.gst-field > label.gst-switch {
    display: flex;
    margin-bottom: 0;
}

.gst-amount-row {
    display: flex;
    gap: 1rem;
    align-items: stretch;
}

#gstCurrency {
    border: 1px solid var(--gst-border);
    border-radius: 0.8rem;
    background: var(--gst-card-bg);
    color: var(--gst-text);
    font-size: 1.8rem;
    padding: 0 1rem;
}

.gst-amount-input {
    flex: 1;
    width: 100%;
    border: 1px solid var(--gst-border);
    border-radius: 0.8rem;
    background: var(--gst-card-bg);
    color: var(--gst-text);
    font-size: 3rem;
    font-weight: 600;
    padding: 1.4rem 1.6rem;
}

.gst-amount-input:focus {
    outline: 2px solid var(--gst-accent);
    border-color: var(--gst-accent);
}

.gst-error {
    display: block;
    min-height: 1.8rem;
    color: var(--gst-danger);
    font-size: 1.3rem;
    margin-top: 0.6rem;
}

/* ===== GST rate buttons ===== */
.gst-rate-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.gst-rate-btn {
    border: 1.5px solid var(--gst-border);
    background: var(--gst-card-bg);
    color: var(--gst-text);
    font-size: 1.6rem;
    font-weight: 600;
    padding: 1rem 1.8rem;
    border-radius: 0.8rem;
    cursor: pointer;
    transition: background-color .2s ease, color .2s ease, border-color .2s ease;
}

.gst-rate-btn:hover { border-color: var(--gst-primary); }

.gst-rate-btn.active {
    background: var(--gst-primary);
    border-color: var(--gst-primary);
    color: #fff;
}

.gst-custom-rate {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-top: 1.2rem;
}

.gst-custom-rate label {
    font-size: 1.4rem;
    color: var(--gst-muted);
    white-space: nowrap;
}

.gst-custom-rate input {
    width: 14rem;
    border: 1px solid var(--gst-border);
    border-radius: 0.8rem;
    background: var(--gst-card-bg);
    color: var(--gst-text);
    font-size: 1.6rem;
    padding: 0.9rem 1.2rem;
}

/* ===== Interstate switch ===== */
.gst-switch {
    position: relative;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.2rem;
    cursor: pointer;
    font-size: 1.4rem;
    color: var(--gst-text);
}

.gst-switch-label {
    flex: 1 1 auto;
    min-width: 20rem;
}

.gst-switch input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
    margin: 0;
    -webkit-appearance: none;
    appearance: none;
}

.gst-switch-track {
    position: relative;
    width: 4.6rem;
    height: 2.6rem;
    background: #9aa3b5;
    border-radius: 999px;
    flex-shrink: 0;
    transition: background-color .2s ease;
}

.gst-switch-track::before {
    content: "";
    position: absolute;
    top: 0.3rem;
    left: 0.3rem;
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    background: #fff;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
    transition: transform .2s ease;
}

.gst-switch input:checked + .gst-switch-track {
    background: var(--gst-primary);
}
.gst-switch input:checked + .gst-switch-track::before {
    transform: translateX(2rem);
}

/* ===== Actions ===== */
.gst-actions {
    display: flex;
    gap: 1.2rem;
    flex-wrap: wrap;
    margin-top: 2.4rem;
}

.gst-calculate-btn { font-size: 1.7rem; padding: 1.1rem 3rem; }

.gst-reset-btn {
    font-size: 1.7rem;
    padding: 1.1rem 3rem;
    border-radius: 1rem;
    border: 1.5px solid var(--gst-border);
    background: transparent;
    color: var(--gst-text);
    font-weight: 500;
}
.gst-reset-btn:hover { border-color: var(--gst-primary); color: var(--gst-primary); }

/* ===== Result card ===== */
.gst-result-card {
    margin-top: 2.8rem;
    padding-top: 2.6rem;
    border-top: 1px dashed var(--gst-border);
    animation: gstFadeIn .35s ease;
}

@keyframes gstFadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.gst-result-heading {
    font-size: 1.9rem;
    font-weight: 700;
    margin-bottom: 1.4rem;
    color: var(--gst-primary);
}

.gst-result-grid { margin: 0; }

.gst-result-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
    border-bottom: 1px solid var(--gst-border);
    font-size: 1.5rem;
}

.gst-result-row dt { color: var(--gst-muted); margin: 0; font-weight: 500; }
.gst-result-row dd { margin: 0; font-weight: 700; }

.gst-total-highlight {
    margin-top: 2rem;
    background: var(--gst-highlight-bg);
    color: #fff;
    border-radius: 1rem;
    padding: 1.8rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: 0 8px 20px var(--gst-shadow);
}

.gst-total-highlight span { font-size: 1.5rem; font-weight: 500; opacity: 0.9; }
.gst-total-highlight strong { font-size: 2.6rem; font-weight: 800; }

.gst-result-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-top: 2rem;
}

.gst-action-btn {
    border: 1.5px solid var(--gst-border);
    background: var(--gst-card-bg);
    color: var(--gst-text);
    font-size: 1.4rem;
    font-weight: 500;
    padding: 0.9rem 1.6rem;
    border-radius: 0.8rem;
    cursor: pointer;
}
.gst-action-btn:hover { border-color: var(--gst-primary); color: var(--gst-primary); }

/* ===== History ===== */
.gst-history-card {
    background: var(--gst-card-bg);
    border: 1px solid var(--gst-border);
    border-radius: 1.4rem;
    box-shadow: 0 10px 30px var(--gst-shadow);
    padding: 2.5rem;
    max-width: 90rem;
    margin: 0 auto 3rem auto;
}

.gst-history-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1.6rem;
}

.gst-history-head h2 { font-size: 1.9rem; font-weight: 700; color: var(--gst-primary); margin: 0; }

.gst-history-actions { display: flex; gap: 1rem; }

.gst-history-empty { color: var(--gst-muted); font-size: 1.4rem; }

.gst-history-list { list-style: none; margin: 0; padding: 0; }

.gst-history-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1.2rem 0;
    border-bottom: 1px solid var(--gst-border);
    font-size: 1.4rem;
}
.gst-history-item:last-child { border-bottom: 0; }

.gst-history-meta { color: var(--gst-muted); font-size: 1.2rem; }

.gst-history-remove {
    border: 0;
    background: transparent;
    color: var(--gst-danger);
    font-size: 1.3rem;
    cursor: pointer;
    text-decoration: underline;
}

/* ===== Toast ===== */
.gst-toast {
    position: fixed;
    left: 50%;
    bottom: 3rem;
    transform: translate(-50%, 1.5rem);
    background: #1a1a2e;
    color: #fff;
    font-size: 1.4rem;
    padding: 1.2rem 2.2rem;
    border-radius: 0.8rem;
    box-shadow: 0 8px 24px rgba(0,0,0,0.25);
    opacity: 0;
    pointer-events: none;
    transition: opacity .25s ease, transform .25s ease;
    z-index: 2000;
}

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

/* ===== Informational sections (align with the site's centered container width) ===== */
.what-is-pg,
.strong-password-section,
.password-generator-work {
    max-width: 95rem;
    margin: 3rem auto;
    padding: 0 1.5rem;
    text-align: center;
}

.what-is-pg h3,
.strong-password-section h3,
.password-generator-work h3 {
    font-size: 3rem;
    font-weight: 600;
    line-height: 1.4;
    word-break: break-word;
    color: #003e93;
}

.what-is-pg p,
.password-generator-work p {
    font-size: 1.5rem;
    line-height: 1.5;
    word-break: break-word;
    letter-spacing: 1.2px;
    word-spacing: 2.2px;
}

.strong-password-point {
    margin: 2rem 0px;
    text-align: left;
}

.strong-password-point h4 {
    font-size: 1.8rem;
    color: #003e93;
    line-height: 1.4;
}

.strong-password-point p {
    font-size: 1.5rem;
    line-height: 1.5;
}

/* ===== FAQ accordion (matches the styling used on other tool/blog pages) ===== */
.faq-headline {
    font-size: 4rem;
    font-weight: bold;
    text-align: center;
}

.faqbutton {
    background-color: var(--gst-card-bg) !important;
    color: var(--gst-text) !important;
}

.faqanswer {
    font-size: 1.8rem;
    line-height: 1.4;
    color: var(--gst-muted);
    letter-spacing: 0.6px;
}

.accordion-header button {
    font-size: 2.1rem;
    margin-top: 0;
}

/* ===== Rate slab table (info section) ===== */
.gst-rate-table-wrap { overflow-x: auto; margin-top: 1.5rem; }
.gst-rate-table { width: 100%; border-collapse: collapse; min-width: 40rem; }
.gst-rate-table th, .gst-rate-table td {
    text-align: left;
    padding: 1.2rem 1.5rem;
    border-bottom: 1px solid #e3e9f5;
    font-size: 1.5rem;
}
.gst-rate-table th { color: #003e93; }

/* ===== Responsive ===== */
@media only screen and (max-width: 767px) {
    .gst-card, .gst-history-card { padding: 1.8rem; border-radius: 1rem; }
    .gst-amount-input { font-size: 2.2rem; }
    .gst-total-highlight strong { font-size: 2rem; }
    .gst-card-topbar { flex-direction: row; }
    .gst-mode-btn { padding: 0.8rem 1.4rem; font-size: 1.3rem; }
}

/* ===== Print ===== */
@media print {
    body > header,
    body > footer,
    .header,
    footer,
    .navbar,
    .gst-mode-toggle,
    #gstForm,
    .gst-result-actions,
    .gst-history-card,
    .what-is-pg,
    .strong-password-section,
    .password-generator-work,
    .faqs,
    .gst-toast {
        display: none !important;
    }
    .gst-result-card { border-top: 0; margin-top: 0; }
    .gst-card { box-shadow: none; border: 0; }
}