/* ============================================================
   Plankton General Trade — Premium Minimal
   Warm off-white surfaces, deep charcoal text, muted brass accent
   ============================================================ */

:root,
[data-theme='light'] {
  /* Surfaces */
  --color-bg: oklch(0.982 0.006 92);          /* #FAFAF7 warm off-white */
  --color-surface: oklch(0.995 0.004 92);
  --color-surface-2: oklch(0.965 0.008 92);
  --color-surface-offset: oklch(0.945 0.01 90);
  --color-surface-dynamic: oklch(0.92 0.012 88);
  --color-divider: oklch(0 0 0 / 0.1);
  --color-border: oklch(0 0 0 / 0.12);

  /* Text */
  --color-text: oklch(0.205 0.008 60);        /* near-black charcoal */
  --color-text-muted: oklch(0.46 0.008 65);
  --color-text-faint: oklch(0.66 0.008 70);
  --color-text-inverse: oklch(0.985 0.005 92);

  /* Accent — muted brass / ochre */
  --color-primary: oklch(0.58 0.085 72);
  --color-primary-hover: oklch(0.5 0.09 68);
  --color-primary-active: oklch(0.43 0.085 64);

  --radius-sm: 0.25rem;
  --radius-md: 0.4rem;
  --radius-lg: 0.6rem;
  --radius-full: 9999px;

  --transition-interactive: 220ms cubic-bezier(0.16, 1, 0.3, 1);

  --content-narrow: 640px;
  --content-default: 1080px;
  --content-wide: 1280px;

  --font-display: 'Fraunces', Georgia, serif;
  --font-body: 'Satoshi', 'Inter', system-ui, sans-serif;

  /* Type scale */
  --text-xs: clamp(0.75rem, 0.72rem + 0.15vw, 0.8125rem);
  --text-sm: clamp(0.875rem, 0.84rem + 0.18vw, 0.9375rem);
  --text-base: clamp(1rem, 0.96rem + 0.2vw, 1.0625rem);
  --text-lg: clamp(1.125rem, 1rem + 0.6vw, 1.4rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.2vw, 2.1rem);
  --text-2xl: clamp(2rem, 1.4rem + 2.4vw, 3.2rem);
  --text-hero: clamp(2.85rem, 1.4rem + 6vw, 6.2rem);

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;
}

[data-theme='dark'] {
  --color-bg: oklch(0.18 0.006 70);
  --color-surface: oklch(0.215 0.007 70);
  --color-surface-2: oklch(0.245 0.008 70);
  --color-surface-offset: oklch(0.265 0.009 70);
  --color-surface-dynamic: oklch(0.3 0.01 70);
  --color-divider: oklch(1 0 0 / 0.1);
  --color-border: oklch(1 0 0 / 0.14);

  --color-text: oklch(0.93 0.006 88);
  --color-text-muted: oklch(0.68 0.008 80);
  --color-text-faint: oklch(0.5 0.008 75);
  --color-text-inverse: oklch(0.2 0.006 70);

  --color-primary: oklch(0.74 0.09 78);
  --color-primary-hover: oklch(0.8 0.085 80);
  --color-primary-active: oklch(0.84 0.08 82);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg: oklch(0.18 0.006 70);
    --color-surface: oklch(0.215 0.007 70);
    --color-surface-2: oklch(0.245 0.008 70);
    --color-text: oklch(0.93 0.006 88);
    --color-text-muted: oklch(0.68 0.008 80);
    --color-primary: oklch(0.74 0.09 78);
  }
}

/* ---------- Skip link ---------- */
.skip-link {
  position: absolute;
  left: var(--space-4);
  top: -3rem;
  z-index: 200;
  background: var(--color-text);
  color: var(--color-bg);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-size: var(--text-sm);
}
.skip-link:focus {
  top: var(--space-4);
}

/* ---------- Shared primitives ---------- */
.container {
  width: 100%;
  max-width: var(--content-default);
  margin-inline: auto;
  padding-inline: var(--space-6);
}
@media (min-width: 768px) {
  .container {
    padding-inline: var(--space-8);
  }
}

.eyebrow {
  font-size: var(--text-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  font-weight: 500;
  margin-bottom: var(--space-5);
}

a {
  color: inherit;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.01em;
  text-decoration: none;
  padding: 0.8em 1.5em;
  border-radius: var(--radius-full);
  min-height: 44px;
  line-height: 1;
  white-space: nowrap;
}
.btn-sm {
  padding: 0.6em 1.15em;
  min-height: 38px;
}
.btn-block {
  width: 100%;
}
.btn-primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}
.btn-primary:hover {
  background: var(--color-primary-hover);
}
.btn-primary:active {
  background: var(--color-primary-active);
}
.btn-ghost {
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
.btn-ghost:hover {
  border-color: var(--color-text);
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: oklch(from var(--color-bg) l c h / 0.82);
  backdrop-filter: blur(14px) saturate(1.2);
  -webkit-backdrop-filter: blur(14px) saturate(1.2);
  border-bottom: 1px solid var(--color-divider);
}
.header-inner {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding: var(--space-3) var(--space-6);
  display: flex;
  align-items: center;
  gap: var(--space-6);
}
@media (min-width: 768px) {
  .header-inner {
    padding-inline: var(--space-8);
  }
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text);
  flex-shrink: 0;
}
.brand-mark {
  width: 30px;
  height: 30px;
  color: var(--color-primary);
}
.brand-mark svg {
  width: 100%;
  height: 100%;
}
.brand-word {
  font-family: var(--font-display);
  font-size: 1.18rem;
  font-weight: 500;
  letter-spacing: -0.01em;
}
.brand-word-light {
  color: var(--color-text-muted);
  font-weight: 400;
}

.primary-nav {
  display: none;
  margin-left: auto;
  gap: var(--space-8);
}
.primary-nav a {
  font-size: var(--text-sm);
  text-decoration: none;
  color: var(--color-text-muted);
  position: relative;
  padding-block: var(--space-1);
}
.primary-nav a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1.5px;
  background: var(--color-primary);
  transition: width var(--transition-interactive);
}
.primary-nav a:hover {
  color: var(--color-text);
}
.primary-nav a:hover::after {
  width: 100%;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-left: auto;
}
@media (min-width: 900px) {
  .primary-nav {
    display: flex;
  }
  .header-actions {
    margin-left: var(--space-8);
  }
}
.header-actions .btn-primary {
  display: none;
}
@media (min-width: 560px) {
  .header-actions .btn-primary {
    display: inline-flex;
  }
}

.icon-btn {
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}
.icon-btn:hover {
  color: var(--color-text);
  border-color: var(--color-text);
}

.menu-toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  align-items: center;
}
.menu-toggle span {
  display: block;
  width: 20px;
  height: 1.5px;
  background: var(--color-text);
  transition: transform var(--transition-interactive), opacity var(--transition-interactive);
}
.menu-toggle[aria-expanded='true'] span:first-child {
  transform: translateY(3.25px) rotate(45deg);
}
.menu-toggle[aria-expanded='true'] span:last-child {
  transform: translateY(-3.25px) rotate(-45deg);
}
@media (min-width: 900px) {
  .menu-toggle {
    display: none;
  }
}

.mobile-nav {
  display: none;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-6) var(--space-6);
  border-top: 1px solid var(--color-divider);
}
.mobile-nav.open {
  display: flex;
}
.mobile-nav a {
  text-decoration: none;
  color: var(--color-text);
  font-size: var(--text-base);
  padding: var(--space-3) 0;
}
.mobile-nav .btn {
  margin-top: var(--space-2);
}
@media (min-width: 900px) {
  .mobile-nav {
    display: none !important;
  }
}

/* ---------- Hero ---------- */
.hero {
  padding-top: clamp(var(--space-12), 7vw, var(--space-24));
  padding-bottom: clamp(var(--space-12), 6vw, var(--space-20));
}
.hero-grid {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-6);
  display: grid;
  gap: clamp(var(--space-8), 5vw, var(--space-16));
  align-items: center;
}
@media (min-width: 768px) {
  .hero-grid {
    padding-inline: var(--space-8);
  }
}
@media (min-width: 980px) {
  .hero-grid {
    grid-template-columns: 1.05fr 0.95fr;
  }
}
.hero h1 {
  font-family: var(--font-display);
  font-size: var(--text-hero);
  font-weight: 400;
  letter-spacing: -0.025em;
  line-height: 0.98;
  font-optical-sizing: auto;
}
.hero h1 em {
  font-style: italic;
  color: var(--color-primary);
}
.hero-sub {
  margin-top: var(--space-6);
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 46ch;
  line-height: 1.5;
}
.hero-cta {
  margin-top: var(--space-8);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}
.hero-media {
  position: relative;
}
.hero-media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius-lg);
  background: var(--color-surface-offset);
}
@media (min-width: 980px) {
  .hero-media img {
    aspect-ratio: 3 / 4;
  }
}

/* ---------- Value strip ---------- */
.value-strip {
  border-block: 1px solid var(--color-divider);
}
.value-list {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding: var(--space-6) var(--space-6);
  display: grid;
  gap: var(--space-5) var(--space-8);
}
@media (min-width: 768px) {
  .value-list {
    padding-inline: var(--space-8);
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 1024px) {
  .value-list {
    grid-template-columns: repeat(4, 1fr);
  }
}
.value-list li {
  font-size: var(--text-base);
  font-weight: 500;
  display: flex;
  gap: var(--space-3);
  align-items: baseline;
  max-width: none;
}
.value-idx {
  color: var(--color-primary);
}

/* ---------- Sections ---------- */
.section {
  padding-block: clamp(var(--space-16), 9vw, var(--space-32));
}
.section-head {
  max-width: 58ch;
  margin-bottom: clamp(var(--space-10), 5vw, var(--space-16));
}
.section-head h2 {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.05;
}
.section-lede {
  margin-top: var(--space-5);
  color: var(--color-text-muted);
  font-size: var(--text-lg);
  line-height: 1.5;
}

/* ---------- Capabilities ---------- */
.cap-grid {
  display: grid;
  gap: var(--space-10) var(--space-12);
}
@media (min-width: 640px) {
  .cap-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 980px) {
  .cap-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}
.cap-item {
  max-width: none;
  border-top: 1px solid var(--color-divider);
  padding-top: var(--space-5);
}
.cap-num {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  color: var(--color-primary);
  font-weight: 500;
  letter-spacing: 0.05em;
}
.cap-item h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 500;
  margin-top: var(--space-3);
  margin-bottom: var(--space-3);
  letter-spacing: -0.01em;
}
.cap-item p {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  line-height: 1.6;
}

/* ---------- Sectors ---------- */
.section-sectors {
  background: var(--color-surface-2);
  border-block: 1px solid var(--color-divider);
}
.sector-grid {
  display: grid;
  gap: clamp(var(--space-8), 4vw, var(--space-12));
}
@media (min-width: 820px) {
  .sector-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
.sector-media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius-md);
  background: var(--color-surface-offset);
}
.sector-body h3 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 400;
  letter-spacing: -0.015em;
  margin-top: var(--space-6);
  margin-bottom: var(--space-4);
}
.sector-body p {
  color: var(--color-text-muted);
  font-size: var(--text-base);
}

/* ---------- Brands ---------- */
.brand-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid var(--color-divider);
  border-left: 1px solid var(--color-divider);
}
@media (min-width: 560px) {
  .brand-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}
@media (min-width: 900px) {
  .brand-grid {
    grid-template-columns: repeat(5, 1fr);
  }
}
.brand-grid li {
  max-width: none;
  border-right: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-8) var(--space-4);
  min-height: 110px;
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--color-text);
  transition: background var(--transition-interactive);
}
.brand-grid li:hover {
  background: var(--color-surface-2);
  color: var(--color-primary);
}
.brand-note {
  margin-top: var(--space-6);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

/* ---------- Why ---------- */
.section-why {
  background: var(--color-surface-2);
  border-block: 1px solid var(--color-divider);
}
.why-grid {
  display: grid;
  gap: clamp(var(--space-10), 5vw, var(--space-16));
}
@media (min-width: 900px) {
  .why-grid {
    grid-template-columns: 0.85fr 1.15fr;
    align-items: start;
  }
}
.why-head {
  margin-bottom: 0;
}
.why-stats {
  display: grid;
  gap: var(--space-8);
}
@media (min-width: 560px) {
  .why-stats {
    grid-template-columns: repeat(3, 1fr);
  }
}
.stat {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  border-top: 1px solid var(--color-divider);
  padding-top: var(--space-5);
}
.stat-big {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--color-text);
}
.stat-label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.55;
}

/* ---------- Contact ---------- */
.contact-grid {
  display: grid;
  gap: clamp(var(--space-10), 5vw, var(--space-20));
}
@media (min-width: 900px) {
  .contact-grid {
    grid-template-columns: 0.9fr 1.1fr;
    align-items: start;
  }
}
.contact-copy h2 {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.05;
  margin-bottom: var(--space-5);
}
.contact-copy > p {
  color: var(--color-text-muted);
  font-size: var(--text-base);
}
.contact-details {
  margin-top: var(--space-10);
  display: grid;
  gap: var(--space-6);
}
.contact-details dt {
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: var(--space-1);
}
.contact-details dd {
  font-size: var(--text-base);
}
.contact-details a {
  text-decoration: none;
  border-bottom: 1px solid var(--color-primary);
  padding-bottom: 1px;
}
.contact-details a:hover {
  color: var(--color-primary);
}

.quote-form {
  display: grid;
  gap: var(--space-5);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: clamp(var(--space-6), 3vw, var(--space-10));
}
.form-row {
  display: grid;
  gap: var(--space-5);
}
@media (min-width: 520px) {
  .form-row {
    grid-template-columns: repeat(2, 1fr);
  }
}
.field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.field label {
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}
.field input,
.field textarea {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.7em 0.85em;
  font-size: var(--text-base);
  color: var(--color-text);
  width: 100%;
  resize: vertical;
}
.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px oklch(from var(--color-primary) l c h / 0.18);
}
.field input::placeholder,
.field textarea::placeholder {
  color: var(--color-text-faint);
}
.form-thanks {
  font-size: var(--text-sm);
  color: var(--color-text);
  background: oklch(from var(--color-primary) l c h / 0.12);
  border: 1px solid oklch(from var(--color-primary) l c h / 0.3);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  margin: 0;
  max-width: none;
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--color-divider);
  padding-top: clamp(var(--space-12), 5vw, var(--space-16));
  padding-bottom: var(--space-8);
}
.footer-inner {
  display: grid;
  gap: var(--space-10);
  padding-bottom: clamp(var(--space-10), 5vw, var(--space-16));
}
@media (min-width: 720px) {
  .footer-inner {
    grid-template-columns: 1.4fr 1fr;
    align-items: start;
  }
}
.footer-tag {
  margin-top: var(--space-5);
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 400;
  letter-spacing: -0.01em;
  max-width: 30ch;
}
.footer-addr {
  margin-top: var(--space-3);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}
.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4) var(--space-8);
}
@media (min-width: 720px) {
  .footer-nav {
    justify-content: flex-end;
  }
}
.footer-nav a {
  text-decoration: none;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}
.footer-nav a:hover {
  color: var(--color-text);
}
.footer-base {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-2);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-divider);
}
.footer-base p {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin: 0;
}