/* --- CSS Variables & Reset --- */

/* Default: LIGHT THEME */
:root {
  --oc-header-bg: #ffffff;
  --oc-header-border: rgba(0, 0, 0, 0.08);
  --oc-footer-bg: #ffffff;
  --oc-footer-border: rgba(0, 0, 0, 0.08);

  /* Optional: subtle light gradient */
  --oc-header-bg-gradient: linear-gradient(
    to right,
    #ffffff,
    #fafafa,
    #ffffff
  );

  --oc-footer-bg-gradient: linear-gradient(
    to bottom,
    #ffffff,
    #f8f8f8
  );
  --oc-bg: #f3f4f6;
  --oc-bg-alt: #ffffff;
  --oc-bg-muted: #e5e7eb;
  --oc-card-bg: #ffffff;
  --oc-accent: #0ea5e9;
  --oc-accent-soft: rgba(14, 165, 233, 0.08);
  --oc-accent-strong: #0284c7;
  --oc-text: #111827;
  --oc-text-muted: #6b7280;
  --oc-border: #d1d5db;
  --oc-radius-lg: 18px;
  --oc-radius-xl: 24px;
  --oc-shadow-soft: 0 18px 45px rgba(148, 163, 184, 0.4);
  --oc-shadow-card: 0 10px 30px rgba(148, 163, 184, 0.35);
}

/* DARK THEME */
[data-theme="dark"] {
  --oc-header-bg: rgba(15, 23, 42, 0.92);
  --oc-header-border: rgba(148, 163, 184, 0.14);
  --oc-footer-bg: rgba(15, 23, 42, 0.96);
  --oc-footer-border: rgba(148, 163, 184, 0.18);

  --oc-header-bg-gradient: linear-gradient(
    to right,
    rgba(15, 23, 42, 0.92),
    rgba(15, 23, 42, 0.88),
    rgba(15, 23, 42, 0.92)
  );

  --oc-footer-bg-gradient: linear-gradient(
    to bottom,
    rgba(15, 23, 42, 0.96),
    rgba(15, 23, 42, 0.92)
  );
  --oc-bg: #050816;
  --oc-bg-alt: #0a1020;
  --oc-bg-muted: #0e1729;
  --oc-card-bg: #0f172a;
  --oc-accent: #38bdf8;
  --oc-accent-soft: rgba(56, 189, 248, 0.15);
  --oc-accent-strong: #0ea5e9;
  --oc-text: #e5e7eb;
  --oc-text-muted: #9ca3af;
  --oc-border: #1f2937;
  --oc-radius-lg: 18px;
  --oc-radius-xl: 24px;
  --oc-shadow-soft: 0 18px 45px rgba(15, 23, 42, 0.8);
  --oc-shadow-card: 0 10px 30px rgba(15, 23, 42, 0.7);
}


*,
*::before,
*::after {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
  background: var(--oc-bg);
  color: var(--oc-text);
  line-height: 1.6;
}

[data-theme="dark"] body {
  background: radial-gradient(circle at top left, #1e293b 0, #020617 45%, #000 100%);
}
/* --- Layout --- */

.oc-container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.oc-main {
  padding-top: 72px;
}

/* --- Header --- */

.oc-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(18px);
  background: var(--oc-header-bg-gradient);
  border-bottom: 1px solid var(--oc-header-border);
}

.oc-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}


.oc-header-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.oc-theme-toggle {
  border-radius: 999px;
  border: 1px solid var(--oc-border);
  background: var(--oc-bg-alt);
  color: var(--oc-text-muted);
  font-size: 0.78rem;
  padding: 0.28rem 0.7rem;
  cursor: pointer;
  white-space: nowrap;
}

.oc-theme-toggle:hover {
  color: var(--oc-text);
  border-color: var(--oc-accent);
}

/* Logo */

.oc-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--oc-text);
}

.oc-logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  background: radial-gradient(circle at 20% 20%, #38bdf8, #0ea5e9 40%, #0369a1 100%);
  box-shadow: 0 0 30px rgba(56, 189, 248, 0.7);
}

.oc-logo-text {
  font-weight: 650;
  letter-spacing: 0.03em;
  font-size: 1.05rem;
}

.oc-logo-svg {
  width: 70px;   /* adjust this value to make it bigger/smaller */
  height: auto;
  display: block;
  color: var(--oc-text);  /* black in light theme, white in dark theme */
}

/* Navigation */

.oc-nav-toggle {
  display: none;
}

.oc-nav-toggle-label {
  display: none;
  cursor: pointer;
  flex-direction: column;
  gap: 4px;
}

.oc-nav-toggle-label span {
  width: 20px;
  height: 2px;
  background: var(--oc-text);
  border-radius: 999px;
}

.oc-nav ul {
  list-style: none;
  display: flex;
  gap: 1.5rem;
  margin: 0;
  padding: 0;
}

.oc-nav a {
  text-decoration: none;
  font-size: 0.95rem;
  color: var(--oc-text-muted);
  padding: 0.3rem 0;
  border-bottom: 2px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.oc-nav a:hover {
  color: var(--oc-text);
}

.oc-nav-active {
  color: var(--oc-accent-strong) !important;
  border-color: var(--oc-accent-strong);
}

/* --- Hero --- */

.oc-hero {
  padding: 3.5rem 0 2.5rem;
}

.oc-hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1.2fr);
  gap: 3rem;
  align-items: center;
}

.oc-hero-text h1 {
  font-size: clamp(2.1rem, 3vw, 2.7rem);
  line-height: 1.15;
  margin: 0 0 0.8rem;
}

.oc-hero-tagline {
  margin: 0 0 1.5rem;
  font-size: 1.05rem;
  color: var(--oc-text-muted);
}

.oc-hero-body {
  margin-bottom: 1.75rem;
  color: var(--oc-text-muted);
}

.oc-hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* Hero visual */

.oc-hero-visual {
  display: flex;
  justify-content: center;
}

.oc-hero-card {
  background: linear-gradient(145deg, rgba(15, 23, 42, 0.96), rgba(15, 23, 42, 0.98));
  border-radius: 24px;
  padding: 1.5rem 1.7rem;
  box-shadow: var(--oc-shadow-soft);
  border: 1px solid rgba(148, 163, 184, 0.22);
  position: relative;
  overflow: hidden;
}

/* LIGHT THEME hero card */
:root .oc-hero-card {
  background: #ffffff;
  border-radius: 20px;
  border: 1px solid rgba(148, 163, 184, 0.25);
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.08);
}

/* The glow background is too strong on white → soften it or remove it */
:root .oc-hero-card::before {
  opacity: 0.18; /* or set to 0 to disable completely */
}

/* Try a slightly subtler subtitle style on light */
:root .oc-hero-card h2 {
  color: var(--oc-text-muted);
}

/* DARK THEME: keep your original look */
[data-theme="dark"] .oc-hero-card {
  background: linear-gradient(145deg, rgba(15, 23, 42, 0.96), rgba(15, 23, 42, 0.98));
  border-radius: 24px;
  border: 1px solid rgba(148, 163, 184, 0.22);
  box-shadow: var(--oc-shadow-soft);
}

[data-theme="dark"] .oc-hero-card::before {
  opacity: 0.7;
}

.oc-hero-card::before {
  content: "";
  position: absolute;
  inset: -40%;
  background: radial-gradient(circle at 10% 0, rgba(56, 189, 248, 0.25), transparent 55%),
              radial-gradient(circle at 90% 100%, rgba(129, 140, 248, 0.25), transparent 55%);
  opacity: 0.7;
  pointer-events: none;
}

.oc-hero-card h2 {
  position: relative;
  margin: 0 0 1rem;
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--oc-text-muted);
}

.oc-hero-card ul {
  position: relative;
  list-style: none;
  padding: 0;
  margin: 0;
}

.oc-hero-card li {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  margin-bottom: 0.6rem;
  font-size: 0.94rem;
}

.oc-hero-card li::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: radial-gradient(circle, #22c55e, #22c55e 60%, transparent 100%);
  margin-right: 0.1rem;
}

/* --- Sections & Content --- */

.oc-section {
  padding: 2.5rem 0;
}

.oc-section-muted {
  background: radial-gradient(circle at top center, rgba(15, 23, 42, 0.8), rgba(15, 23, 42, 0.96));
  border-top: 1px solid rgba(148, 163, 184, 0.12);
  border-bottom: 1px solid rgba(148, 163, 184, 0.12);
}

.oc-section-header {
  margin-bottom: 1.75rem;
}

.oc-section-header h1 {
  font-size: 2rem;
  margin: 0 0 0.5rem;
}

.oc-section-description {
  margin: 0;
  color: var(--oc-text-muted);
}

.oc-content {
  max-width: 760px;
}

.oc-content h2 {
  margin-top: 1.8rem;
  font-size: 1.35rem;
}

.oc-content h3 {
  margin-top: 1.3rem;
  font-size: 1.1rem;
}

.oc-content p {
  margin: 0.6rem 0;
  color: var(--oc-text-muted);
}

.oc-content ul,
.oc-content ol {
  margin: 0.4rem 0 0.9rem 1.1rem;
}

/* --- Grid & Cards --- */

.oc-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem;
}

.oc-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
}

.oc-card {
  background: var(--oc-card-bg);
  border-radius: var(--oc-radius-lg);
  padding: 1.25rem 1.3rem;
  border: 1px solid var(--oc-border);
  box-shadow: var(--oc-shadow-card);
}

.oc-card h2 {
  margin-top: 0;
  margin-bottom: 0.5rem;
}

.oc-card p {
  margin-top: 0;
  margin-bottom: 0.6rem;
  color: var(--oc-text-muted);
}

.oc-card-link h2 a {
  text-decoration: none;
  color: var(--oc-text);
}

.oc-card-link h2 a:hover {
  color: var(--oc-accent-strong);
}

/* Split layout */

.oc-split {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1.2fr);
  gap: 2rem;
}

/* Lists */

.oc-list-check {
  list-style: none;
  padding-left: 0;
}

.oc-list-check li {
  position: relative;
  padding-left: 1.4rem;
  margin-bottom: 0.5rem;
  color: var(--oc-text-muted);
}

.oc-list-check li::before {
  content: "✔";
  position: absolute;
  left: 0;
  top: 0;
  font-size: 0.9rem;
  color: #22c55e;
}

/* Links & Buttons */

.oc-link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.1rem;
  font-size: 0.92rem;
  color: var(--oc-accent);
  text-decoration: none;
}

.oc-link-arrow:hover {
  color: var(--oc-accent-strong);
}

.oc-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.55rem 1.1rem;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 500;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.18s ease, border-color 0.18s ease, transform 0.1s ease;
}

.oc-btn-primary {
  background: linear-gradient(135deg, var(--oc-accent), var(--oc-accent-strong));
  color: #0f172a;
  box-shadow: 0 12px 30px rgba(56, 189, 248, 0.55);
}

.oc-btn-primary:hover {
  transform: translateY(-1px);
}

.oc-btn-secondary {
  background: rgba(15, 23, 42, 0.9);
  color: var(--oc-text);
  border-color: rgba(148, 163, 184, 0.5);
}

.oc-btn-secondary:hover {
  border-color: var(--oc-accent);
  color: var(--oc-accent-strong);
}

.oc-btn-outline {
  background: transparent;
  border-color: rgba(148, 163, 184, 0.45);
  color: var(--oc-text);
}

.oc-btn-outline:hover {
  border-color: var(--oc-accent);
}

/* --- Footer --- */

.oc-footer {
  background: var(--oc-footer-bg-gradient);
  border-top: 1px solid var(--oc-footer-border);
  padding: 1.3rem 0 1.5rem;
}

.oc-footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
}

.oc-footer-left p {
  margin: 0;
}

.oc-footer-tagline {
  font-size: 0.9rem;
  color: var(--oc-text-muted);
}

.oc-footer-link {
  color: var(--oc-accent);
  text-decoration: none;
  font-size: 0.92rem;
}

.oc-footer-link:hover {
  color: var(--oc-accent-strong);
}

.oc-footer-left {
  display: flex;
  align-items: center;
  gap: 0.9rem;
}

.oc-footer-logo {
  height: 64px;         /* adjust size here */
  width: auto;
  opacity: 0.9;         /* looks good in both themes */
}

.oc-footer-text p {
  margin: 0;
  line-height: 1.3;
}

/* Optional: adapt PNG brightness for dark theme */
[data-theme="dark"] .oc-footer-logo {
  filter: brightness(1.3);
}


/* --- Responsive --- */

@media (max-width: 900px) {
  .oc-hero-inner {
    grid-template-columns: minmax(0, 1fr);
  }

  .oc-grid-3 {
    grid-template-columns: minmax(0, 1fr);
  }

  .oc-grid-2,
  .oc-split {
    grid-template-columns: minmax(0, 1fr);
  }

  .oc-footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 720px) {
  .oc-nav-toggle-label {
    display: flex;
  }

  .oc-nav {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(15, 23, 42, 0.98);
    border-bottom: 1px solid rgba(148, 163, 184, 0.22);
    transform-origin: top;
    transform: scaleY(0);
    transition: transform 0.15s ease-out;
  }

  .oc-nav ul {
    flex-direction: column;
    padding: 0.8rem 1.5rem 1.1rem;
    gap: 0.7rem;
  }

  .oc-nav-toggle:checked ~ .oc-nav {
    transform: scaleY(1);
  }
}

:root .oc-btn-secondary {
  background: #ffffff;
  border-color: rgba(148, 163, 184, 0.6);
  color: var(--oc-text);
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.04);
}

:root .oc-btn-secondary:hover {
  border-color: var(--oc-accent);
  color: var(--oc-accent-strong);
  box-shadow: 0 10px 26px rgba(15, 23, 42, 0.06);
}

/* DARK THEME: preserve the existing design */
[data-theme="dark"] .oc-btn-secondary {
  background: rgba(15, 23, 42, 0.9);
  color: var(--oc-text);
  border-color: rgba(148, 163, 184, 0.5);
}

[data-theme="dark"] .oc-btn-secondary:hover {
  border-color: var(--oc-accent);
  color: var(--oc-accent-strong);
}