/* ===========================================================================
   GST eFiling Guide — Tools stylesheet
   Standalone, hand-written CSS for the interactive calculators. Deliberately
   NOT Tailwind: the production server has no Node/Vite build step, so tool
   pages must render correctly from a plain static stylesheet. Colours, fonts
   and shadows are pulled from the design tokens the compiled app.css already
   exposes as CSS custom properties (see resources/css/app.css @theme block),
   so these pages stay visually identical to the rest of the site.
   All selectors are namespaced .gt-* to avoid collision with utility classes.
   =========================================================================== */

.gt {
    --gt-border: var(--color-ink-200, #ccd2db);
    --gt-ink: var(--color-ink-900, #10131a);
    --gt-ink-soft: var(--color-ink-500, #4c5566);
    --gt-ink-faint: var(--color-ink-400, #6b7585);
    --gt-brand: var(--color-brand-400, #0b6e63);
    --gt-brand-dark: var(--color-brand-500, #08544c);
    --gt-brand-tint: var(--color-brand-50, #eaf4f2);
    --gt-paper: var(--color-paper, #f4f6f9);
    --gt-radius: 12px;
    --gt-mono: var(--font-mono, 'Space Mono', ui-monospace, monospace);
    --gt-display: var(--font-display, 'Space Grotesk', ui-sans-serif, sans-serif);
}

/* ---- Layout ------------------------------------------------------------- */
.gt-wrap {
    max-width: 80rem;
    margin: 0 auto;
    padding: 3.5rem 1.25rem 4.5rem;
}
@media (min-width: 640px) { .gt-wrap { padding: 4rem 1.5rem 5rem; } }

.gt-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.75rem;
    align-items: start;
}
@media (min-width: 1024px) {
    .gt-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: 2.5rem; }
    .gt-grid--sticky .gt-result { position: sticky; top: 6.5rem; }
}

/* ---- Cards ------------------------------------------------------------ */
.gt-card {
    border: 1px solid var(--gt-border);
    border-radius: var(--gt-radius);
    background: #fff;
    padding: 1.5rem;
    box-shadow: var(--shadow-soft, 0 1px 2px 0 rgb(23 18 14 / 0.05), 0 8px 20px -10px rgb(23 18 14 / 0.15));
}
@media (min-width: 640px) { .gt-card { padding: 1.75rem; } }

.gt-card + .gt-card { margin-top: 1.25rem; }

.gt-result {
    border-radius: var(--gt-radius);
    background: var(--color-ink-800, #171b24);
    color: var(--color-paper-light, #fff);
    padding: 1.75rem;
    border: 1px solid var(--color-ink-700, #262c37);
}
@media (min-width: 640px) { .gt-result { padding: 2rem; } }

/* ---- Labels & typography -------------------------------------------- */
.gt-eyebrow {
    font-family: var(--gt-mono);
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.16em;
    color: var(--gt-brand-dark);
}
.gt-label {
    display: block;
    font-family: var(--gt-mono);
    font-size: 11px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--gt-ink-faint);
    margin-bottom: 0.4rem;
}
.gt-hint {
    margin-top: 0.4rem;
    font-size: 12px;
    line-height: 1.5;
    color: var(--gt-ink-faint);
}
.gt-field + .gt-field { margin-top: 1.15rem; }
.gt-fieldset { border: 0; padding: 0; margin: 0; }
.gt-fieldset + .gt-fieldset,
.gt-field + .gt-fieldset { margin-top: 1.5rem; padding-top: 1.5rem; border-top: 1px dashed var(--gt-border); }
.gt-fieldset > legend {
    font-family: var(--gt-display);
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--gt-ink);
    margin-bottom: 0.9rem;
    padding: 0;
}

/* ---- Inputs -------------------------------------------------------- */
.gt-input, .gt-select {
    width: 100%;
    border: 1px solid var(--gt-border);
    background: #fff;
    border-radius: 8px;
    padding: 0.7rem 0.9rem;
    font-size: 0.9rem;
    font-family: inherit;
    color: var(--gt-ink);
    -webkit-appearance: none;
    appearance: none;
}
.gt-select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236b7585' stroke-width='2.5'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.7rem center;
    background-size: 1rem;
    padding-right: 2.4rem;
}
.gt-input:focus, .gt-select:focus {
    outline: none;
    border-color: var(--gt-brand);
    box-shadow: 0 0 0 3px var(--gt-brand-tint);
}
.gt-input:disabled { opacity: 0.4; }

/* Rupee-prefixed input */
.gt-rupee { position: relative; }
.gt-rupee > .gt-input { padding-left: 2rem; }
.gt-rupee::before {
    content: "\20B9";
    position: absolute;
    left: 0.85rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.9rem;
    color: var(--gt-ink-faint);
    pointer-events: none;
}

/* Segmented toggle */
.gt-seg {
    display: inline-flex;
    border: 1px solid var(--gt-border);
    border-radius: 8px;
    padding: 3px;
    background: var(--gt-paper);
    gap: 3px;
    flex-wrap: wrap;
}
.gt-seg > button {
    border: 0;
    background: transparent;
    font-family: var(--gt-mono);
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--gt-ink-soft);
    padding: 0.5rem 0.9rem;
    border-radius: 6px;
    cursor: pointer;
    transition: background .15s, color .15s;
}
.gt-seg > button[aria-pressed="true"] { background: var(--color-ink-900, #10131a); color: #fff; }

/* ---- Result panel bits ------------------------------------------- */
.gt-result .gt-eyebrow { color: var(--color-ink-300, #9aa4b3); }
.gt-out-row { padding: 0.9rem 0; border-top: 1px dashed var(--color-ink-600, #383f4d); }
.gt-out-row:first-of-type { border-top: 0; }
.gt-out-k {
    font-family: var(--gt-mono);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--color-ink-300, #9aa4b3);
}
.gt-out-v {
    margin-top: 0.25rem;
    font-family: var(--gt-display);
    font-weight: 700;
    font-size: 1.6rem;
    color: #fff;
}
.gt-out-v--lg { font-size: 2.1rem; color: var(--color-brand-300, #5fa89c); }
.gt-out-v--sm { font-size: 1.15rem; }
.gt-out-sub { margin-top: 0.2rem; font-size: 11px; color: var(--color-ink-400, #6b7585); }

/* Small breakdown table (inside result panel or a card) */
.gt-table { width: 100%; border-collapse: collapse; font-size: 0.82rem; }
.gt-table th, .gt-table td { text-align: left; padding: 0.55rem 0.6rem; }
.gt-table thead th {
    font-family: var(--gt-mono);
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-ink-300, #9aa4b3);
    border-bottom: 1px solid var(--color-ink-600, #383f4d);
}
.gt-table td { border-bottom: 1px dashed var(--color-ink-700, #262c37); }
.gt-table td:last-child, .gt-table th:last-child { text-align: right; font-variant-numeric: tabular-nums; }
.gt-table tbody tr:last-child td { border-bottom: 0; }
.gt-table--light th, .gt-table--light td { color: var(--gt-ink); }
.gt-table--light thead th { color: var(--gt-ink-faint); border-bottom-color: var(--gt-border); }
.gt-table--light td { border-bottom-color: var(--gt-border); }

/* ---- Callouts --------------------------------------------------- */
.gt-note {
    margin-top: 2rem;
    max-width: 44rem;
    font-size: 12px;
    line-height: 1.7;
    color: var(--gt-ink-faint);
}
.gt-verdict {
    border-radius: 10px;
    padding: 1.1rem 1.25rem;
    font-size: 0.9rem;
    line-height: 1.55;
    border: 1px solid transparent;
}
.gt-verdict strong { font-family: var(--gt-display); }
.gt-verdict--yes { background: #eef7ee; border-color: #cfe6cf; color: #1f4023; }
.gt-verdict--no  { background: #fbf1e7; border-color: #eed7bd; color: #7a4b16; }
.gt-verdict--warn { background: #fbf4e6; border-color: #efe0bd; color: #6f5312; }

/* ---- Steps / wizard ------------------------------------------- */
.gt-steps { counter-reset: gt; list-style: none; padding: 0; margin: 0; }
.gt-steps > li {
    position: relative;
    padding-left: 2.75rem;
    min-height: 1.75rem;
}
.gt-steps > li + li { margin-top: 1.4rem; }
.gt-steps > li::before {
    counter-increment: gt;
    content: counter(gt);
    position: absolute;
    left: 0; top: -0.1rem;
    width: 1.9rem; height: 1.9rem;
    display: flex; align-items: center; justify-content: center;
    border-radius: 999px;
    border: 1px solid var(--gt-border);
    background: var(--gt-paper);
    font-family: var(--gt-mono);
    font-size: 12px; font-weight: 700;
    color: var(--gt-ink-soft);
}

/* ---- "More tools" strip -------------------------------------- */
.gt-more { margin-top: 3.5rem; }
.gt-more h2 {
    font-family: var(--gt-display);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--gt-ink-faint);
    margin: 0 0 1rem;
}
.gt-more-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.6rem;
}
@media (min-width: 640px) { .gt-more-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .gt-more-grid { grid-template-columns: repeat(3, 1fr); } }
.gt-more-grid a {
    display: block;
    border: 1px solid var(--gt-border);
    border-radius: 10px;
    padding: 0.9rem 1rem;
    text-decoration: none;
    color: var(--gt-ink);
    background: #fff;
    transition: border-color .15s, transform .15s;
}
.gt-more-grid a:hover { border-color: var(--color-brand-300, #5fa89c); transform: translateY(-1px); }
.gt-more-grid strong { display: block; font-family: var(--gt-display); font-size: 0.9rem; }
.gt-more-grid span { display: block; margin-top: 0.15rem; font-size: 12px; color: var(--gt-ink-faint); }

/* ---- Hub page grid ----------------------------------------- */
.gt-hub-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    margin-top: 2.5rem;
}
@media (min-width: 640px) { .gt-hub-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .gt-hub-grid { grid-template-columns: repeat(3, 1fr); } }
.gt-hub-card {
    display: flex;
    flex-direction: column;
    border: 1px solid var(--gt-border);
    border-radius: var(--gt-radius);
    background: #fff;
    padding: 1.4rem;
    text-decoration: none;
    color: var(--gt-ink);
    box-shadow: var(--shadow-soft, 0 1px 2px 0 rgb(23 18 14 / 0.05), 0 8px 20px -10px rgb(23 18 14 / 0.15));
    transition: border-color .15s, transform .15s;
}
.gt-hub-card:hover { border-color: var(--color-brand-300, #5fa89c); transform: translateY(-2px); }
.gt-hub-card__icon {
    width: 2.5rem; height: 2.5rem;
    display: flex; align-items: center; justify-content: center;
    border: 1px solid var(--gt-border);
    border-radius: 8px;
    color: var(--gt-brand);
    margin-bottom: 0.9rem;
}
.gt-hub-card__icon svg { width: 1.25rem; height: 1.25rem; }
.gt-hub-card h3 { font-family: var(--gt-display); font-size: 1.05rem; font-weight: 700; margin: 0; }
.gt-hub-card p { margin: 0.5rem 0 0; font-size: 0.85rem; line-height: 1.55; color: var(--gt-ink-soft); flex: 1; }
.gt-hub-card__go {
    margin-top: 1.1rem;
    font-family: var(--gt-mono);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--gt-ink-faint);
}
.gt-hub-card:hover .gt-hub-card__go { color: var(--gt-brand); }
.gt-hub-card--soon { opacity: 0.55; pointer-events: none; }
.gt-hub-card--soon .gt-hub-card__go { color: var(--gt-ink-faint); }

.gt-hub-sec + .gt-hub-sec { margin-top: 3rem; }
.gt-hub-sec > h2 {
    font-family: var(--gt-display);
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--gt-ink);
    margin: 0;
}
.gt-hub-sec > p { margin: 0.5rem 0 0; max-width: 42rem; color: var(--gt-ink-soft); font-size: 0.95rem; }

/* Utility */
.gt-mt-sm { margin-top: 0.75rem; }
.gt-strong-num { font-variant-numeric: tabular-nums; }
.gt-split-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; }

/* ---- Small screens ------------------------------------------- */
@media (max-width: 640px) {
    .gt-wrap { padding: 2.5rem 1rem 3.5rem; }
    .gt-card, .gt-result { padding: 1.25rem; }
    .gt-out-v { font-size: 1.4rem; }
    .gt-out-v--lg { font-size: 1.8rem; }
    /* Let wide breakdown tables scroll inside the result panel rather than
       pushing the layout wider than the screen. */
    .gt-result .gt-table { display: block; overflow-x: auto; white-space: nowrap; -webkit-overflow-scrolling: touch; }
    .gt-table th, .gt-table td { padding: 0.5rem 0.45rem; font-size: 0.78rem; }
    .gt-split-2 { grid-template-columns: 1fr; }
}