/* ══════════════════════════════════════════════════════════════════════════
   अर्थनायक — Arthnayk brand system
   The ONE stylesheet for every page (sales, checkout, calculator, delivery,
   admin). Change a brand colour here and the whole site follows.
   Loaded as: <link rel="stylesheet" href="assets/brand.css">   (site/)
              <link rel="stylesheet" href="site/assets/brand.css">  (.dc.html)
   Type: Mukta, loaded per page from Google Fonts.
   ══════════════════════════════════════════════════════════════════════ */

:root {
  /* ─ ground ─ */
  --color-bg: #F8F5EE;          /* ivory page */
  --color-surface: #FFFFFF;     /* cards */
  --color-navy: #0B1F33;        /* brand primary — dark bands, secondary CTA */
  --color-navy-soft: #12314F;   /* navy hover / band top */
  --color-navy-deep: #081726;   /* navy pressed / band bottom */

  /* ─ accent: gold ─ */
  --color-accent: #C9A227;
  --color-accent-100: #FBF6E4;  /* tinted fills on ivory */
  --color-accent-200: #F3E7BE;
  --color-accent-300: #E7D48E;  /* gold on navy, highlight ink */
  --color-accent-600: #B08D1C;  /* hover */
  --color-accent-700: #8A6D12;  /* gold TEXT on ivory (4.5:1) + pressed */

  /* ─ ink ─ */
  --color-text: #1D252C;
  --ink: #1D252C;                                             /* body */
  --ink-muted: color-mix(in srgb, #0B1F33 74%, transparent);  /* secondary */
  --ink-faint: color-mix(in srgb, #0B1F33 60%, transparent);  /* labels, meta */
  --gold-ink: #8A6D12;                                        /* links, kickers */
  --on-navy: rgba(255,255,255,.9);        /* body text on navy */
  --on-navy-faint: rgba(255,255,255,.68); /* secondary text on navy */

  /* ─ lines & fills ─ */
  --color-divider: color-mix(in srgb, #0B1F33 13%, transparent);
  --color-border: color-mix(in srgb, #0B1F33 10%, transparent);
  --gold-hair: color-mix(in srgb, #C9A227 42%, transparent); /* rule on navy */
  --navy-card: rgba(255,255,255,.07);   /* card inside a navy band */
  --navy-card-2: rgba(255,255,255,.10); /* raised card inside a navy band */

  /* ─ status: one pair per ground, ivory then navy ─ */
  --color-success: #16805B;
  --color-warning: #8A6D12;
  --color-danger: #B3261E;
  --on-navy-success: #7BD1A8;
  --on-navy-danger: #EE9082;

  /* ─ layout: the container scale (one system, four widths) ─ */
  --gutter: clamp(20px, 5vw, 64px);
  --wrap: 1280px;         /* standard section: text + card grids */
  --wrap-wide: 1440px;    /* dashboards, full-bleed data */
  --wrap-mid: 1040px;     /* two-column checkout / delivery */
  --wrap-narrow: 760px;   /* a single form or focused panel */
  --measure: 66ch;        /* comfortable reading width */

  /* ─ radius ─ */
  --radius-sm: 4px; --radius-md: 8px; --radius-lg: 12px; --radius-pill: 999px;

  /* ─ elevation: a whisper, tinted navy ─ */
  --shadow-sm: 0 1px 3px color-mix(in srgb, #0B1F33 8%, transparent);
  --shadow-md: 0 6px 18px -6px color-mix(in srgb, #0B1F33 28%, transparent);
  --shadow-lg: 0 20px 48px -20px color-mix(in srgb, #0B1F33 40%, transparent);

  /* ─ spacing ─ */
  --space-1: 4.6px; --space-2: 9.2px; --space-3: 13.8px; --space-4: 18.4px;
  --space-5: 23px; --space-6: 27.6px; --space-7: 32.2px; --space-8: 36.8px;

  /* ─ aliases (admin dashboard + calculator use the short names) ─ */
  --bg: var(--color-bg); --surface: var(--color-surface);
  --navy: var(--color-navy); --navy-soft: var(--color-navy-soft);
  --navy-deep: var(--color-navy-deep);
  --gold: var(--color-accent); --gold-100: var(--color-accent-100);
  --gold-200: var(--color-accent-200); --gold-300: var(--color-accent-300);
  --gold-600: var(--color-accent-600); --gold-700: var(--color-accent-700);
  --line: var(--color-divider);
  --ok: var(--color-success); --warn: var(--color-warning); --bad: var(--color-danger);
  --r-sm: var(--radius-sm); --r-md: var(--radius-md); --r-lg: var(--radius-lg);
}

/* ─── base ─────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
body {
  margin: 0; background: var(--color-bg); color: var(--ink);
  font-family: 'Mukta', system-ui, sans-serif;
  font-size: clamp(16px, 0.3vw + 15.4px, 17px); line-height: 1.65; font-weight: 400; text-wrap: pretty;
}
h1, h2, h3, h4, h5, h6 {
  font-family: 'Mukta', system-ui, sans-serif; color: var(--color-navy);
  line-height: 1.32; letter-spacing: -.015em; margin: 0;
}
h1, h2 { font-weight: 700; }
h3, h4, h5, h6 { font-weight: 600; }
h1 { font-size: clamp(31px, 4.2vw, 42px); }
h2 { font-size: clamp(25px, 3.2vw, 32px); }
h3 { font-size: clamp(21px, 2.4vw, 25px); }
h4 { font-size: clamp(18px, 1.8vw, 20px); } h5 { font-size: 16px; }
h6 { font-size: 13px; letter-spacing: .08em; text-transform: uppercase; }
p { margin: 0; }
a { color: var(--gold-ink); text-underline-offset: 3px; }
a:hover { color: var(--color-accent-600); }
img { display: block; max-width: 100%; }
figure { margin: 0; }
figcaption { font-size: 12.5px; line-height: 1.6; margin-top: var(--space-1); color: var(--ink-faint); }
button, input, select, textarea { font: inherit; }
:focus { outline: none; }
:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }
::selection { background: color-mix(in srgb, var(--color-accent) 32%, transparent); color: var(--color-navy); }

/* figures: tabular so prices and numbers line up in columns; never break */
.fig { font-weight: 700; letter-spacing: -.02em; font-variant-numeric: tabular-nums; white-space: nowrap; }
.text-muted { color: var(--ink-muted); }
.hr { height: 1px; border: 0; margin: 0; background: var(--color-divider); }

/* ─── layout ───────────────────────────────────────────────────────────── */
/* Every page section wraps its content in one of these. Bands (the navy /
   ivory backgrounds) stay full-bleed; only the container inside is capped. */
.wrap, .wrap-wide, .wrap-mid, .wrap-narrow {
  width: 100%; margin-inline: auto; padding-inline: var(--gutter);
}
.wrap { max-width: var(--wrap); }
.wrap-wide { max-width: var(--wrap-wide); }
.wrap-mid { max-width: var(--wrap-mid); }
.wrap-narrow { max-width: var(--wrap-narrow); }
.read { max-width: var(--measure); }

/* vertical rhythm: two section heights, nothing else */
.sec { padding-block: clamp(44px, 6vw, 88px); }
.sec-tight { padding-block: clamp(30px, 4vw, 56px); }

/* card grids — never let a card fall below a comfortable width */
.grid-cards { display: grid; gap: clamp(16px, 2.4vw, 26px);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr)); }
.grid-2 { display: grid; gap: clamp(24px, 4vw, 56px); align-items: center;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr)); }
/* content + sticky aside. The aside comes FIRST in the DOM so it stacks on top
   on mobile (order summary before the offer); from 1000px it moves right. */
.split { display: grid; gap: clamp(20px, 3vw, 34px); align-items: start; }
@media (min-width: 1000px) {
  .split { grid-template-columns: minmax(0, 1fr) 350px; }
  .split > .split-main { grid-column: 1; grid-row: 1 / span 2; }
  .split > .split-side { grid-column: 2; grid-row: 1; position: sticky; top: 22px; }
  /* .split-foot follows .split-main in the DOM (so it stays below the offer on
     mobile) and tucks under the aside on desktop */
  .split > .split-foot { grid-column: 2; grid-row: 2; }
}

/* two balanced columns from 920px — narrative beside its figures */
.split-even { display: grid; gap: clamp(24px, 3.5vw, 44px); align-items: start; }
@media (min-width: 920px) { .split-even { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); } }

/* a table that would overflow scrolls inside its card, never the page */
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }

/* ─── buttons ──────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-family: 'Mukta', system-ui, sans-serif; font-weight: 600;
  font-size: 16px; line-height: 1.35; padding: 12px 22px;
  background: transparent; border: 1px solid transparent;
  border-radius: var(--radius-md); cursor: pointer; text-decoration: none;
  transition: background .18s ease, border-color .18s ease, color .18s ease;
}
.btn svg { display: block; }
.btn:disabled, .btn[aria-disabled='true'] { opacity: .45; cursor: not-allowed; }

/* primary — filled gold on navy ink. The one buy button. */
.btn-primary { background: var(--color-accent); border-color: var(--color-accent); color: var(--color-navy); }
.btn-primary:hover { background: var(--color-accent-600); border-color: var(--color-accent-600); color: #fff; }
.btn-primary:active { background: var(--color-accent-700); border-color: var(--color-accent-700); color: #fff; }

/* secondary — filled navy. Second action on an ivory band. */
.btn-secondary { background: var(--color-navy); border-color: var(--color-navy); color: #fff; }
.btn-secondary:hover { background: var(--color-navy-soft); border-color: var(--color-navy-soft); color: #fff; }
.btn-secondary:active { background: var(--color-navy-deep); border-color: var(--color-navy-deep); color: #fff; }

/* quiet, on ivory */
.btn-outline-navy, .btn-ghost {
  background: transparent; border-color: color-mix(in srgb, #0B1F33 26%, transparent);
  color: var(--color-navy);
}
.btn-outline-navy:hover, .btn-ghost:hover { background: color-mix(in srgb, #0B1F33 6%, transparent); border-color: var(--color-navy); color: var(--color-navy); }
.btn-outline-navy:active, .btn-ghost:active { background: color-mix(in srgb, #0B1F33 11%, transparent); }

/* quiet, on navy */
.btn-outline-gold { background: transparent; border-color: var(--color-accent); color: var(--color-accent-300); }
.btn-outline-gold:hover { background: color-mix(in srgb, var(--color-accent) 18%, transparent); color: #fff; }
.btn-outline-gold:active { background: color-mix(in srgb, var(--color-accent) 28%, transparent); color: #fff; }

.btn-danger { background: transparent; border-color: color-mix(in srgb, #B3261E 40%, transparent); color: var(--color-danger); }
.btn-danger:hover { background: color-mix(in srgb, #B3261E 8%, transparent); border-color: var(--color-danger); }

.btn-sm { font-size: 13.5px; padding: 7px 13px; }
.btn-icon { width: 36px; height: 36px; padding: 0; }
.btn-block { display: flex; width: 100%; text-align: center; }

/* ─── cards ────────────────────────────────────────────────────────────── */
.card {
  display: flex; flex-direction: column; gap: 12px;
  padding: clamp(18px, 2.4vw, 24px);
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); box-shadow: var(--shadow-sm);
}
.card-kicker { color: var(--gold-ink); font-weight: 600; font-size: 12px; letter-spacing: .1em; text-transform: uppercase; }
.card-title { font-weight: 600; font-size: 18px; line-height: 1.35; color: var(--color-navy); }
.card-body { margin: 0; font-size: 16px; line-height: 1.7; opacity: 1; color: var(--ink-muted); flex: 1; }
.card-meta { display: flex; align-items: center; gap: 6px; font-size: 13px; color: var(--ink-faint); }
.elev-sm { box-shadow: var(--shadow-sm); }
.elev-md { box-shadow: var(--shadow-md); }
.elev-lg { box-shadow: var(--shadow-lg); }

/* plate — a photograph matted on the page */
.plate {
  box-sizing: border-box; border: 6px solid var(--color-surface);
  outline: 1px solid color-mix(in srgb, #0B1F33 12%, transparent);
  border-radius: var(--radius-md);
}

/* ─── header ───────────────────────────────────────────────────────────── */
.nav {
  display: flex; align-items: center; gap: var(--space-4);
  padding: var(--space-3) var(--space-4);
  background: var(--color-navy); border-bottom: 1px solid rgba(201,162,39,.22);
}
.nav-brand { font-weight: 700; font-size: 18px; margin-right: auto; color: #fff; }
.nav a { color: rgba(255,255,255,.8); text-decoration: none; font-size: 14px; }
.nav a:hover, .nav a[aria-current='page'], .nav a.nav-link:hover { color: var(--color-accent); }
/* nav content lines up with .wrap on wide screens, but the band stays full-bleed */
.nav { padding-inline: max(var(--gutter), calc((100% - var(--wrap)) / 2 + var(--gutter))); }
/* the in-page links travel as a group */
.nav-links { display: flex; align-items: center; gap: clamp(12px, 2.2vw, 26px); }
/* small screens: the group drops to a second row instead of disappearing */
@media (max-width: 860px) {
  .nav { flex-wrap: wrap; row-gap: 0; padding-block: 10px 7px; align-content: start; }
  .nav .nav-links { order: 3; flex: 1 1 100%; flex-wrap: wrap; gap: 2px 20px;
    margin-top: 9px; padding-top: 7px; border-top: 1px solid rgba(201,162,39,.18); }
  .nav .nav-links a { font-size: 13.5px; padding: 5px 0; }
}
@media (max-width: 560px) {
  .nav { gap: 10px 16px; }
  .nav .brand-sub { display: none; }
  .btn:not(.btn-sm):not(.btn-icon) { min-height: 46px; }
}

/* ─── forms ────────────────────────────────────────────────────────────── */
.field { margin-bottom: 15px; }
.field label { font-size: 15px; }
.input {
  width: 100%; font-size: 16px; padding: 11px 13px; color: var(--ink);
  background: var(--color-surface); caret-color: var(--color-accent);
  border: 1px solid color-mix(in srgb, #0B1F33 22%, transparent);
  border-radius: var(--radius-md);
}
.input::placeholder { color: var(--ink-faint); }
.input:hover { border-color: color-mix(in srgb, #0B1F33 38%, transparent); }
.input:focus-visible { border-color: var(--color-accent); outline-offset: 0; }
textarea.input { min-height: 90px; resize: vertical; }

/* ─── small labels ─────────────────────────────────────────────────────── */
.tag {
  display: inline-flex; align-items: center; font-size: 11.5px; font-weight: 600;
  letter-spacing: .06em; padding: 3px 10px; border-radius: var(--radius-pill);
}
.tag-accent { background: var(--color-accent-100); color: var(--color-accent-700); }
.tag-neutral { background: color-mix(in srgb, #0B1F33 6%, transparent); color: var(--ink-muted); }
.tag-outline { border: 1px solid var(--color-accent); color: var(--color-accent-700); }

/* ─── tables ───────────────────────────────────────────────────────────── */
.table { width: 100%; border-collapse: collapse; font-size: 15.5px; }
.table th {
  text-align: left; font-size: 11.5px; letter-spacing: .12em; text-transform: uppercase;
  font-weight: 600; color: var(--ink-faint);
  padding: 0 14px 9px; border-bottom: 1px solid var(--color-divider);
}
.table td { padding: 13px 14px; border-bottom: 1px solid var(--color-border); vertical-align: middle; }
.table tbody tr:last-child td { border-bottom: 0; }