/* ========= THEME TOKENS ========= */

:root {
  /* Dark theme defaults */
  --bg: #050816;
  --bg-alt: #070b1f;
  --bg-soft: #0b1028;

  --fg: #f9fafb;
  --fg-muted: #9ca3af;

  --accent: #60a5fa;
  --accent-soft: rgba(96, 165, 250, 0.15);

  --border-subtle: rgba(148, 163, 184, 0.4);
  --radius-lg: 18px;
  --shadow-soft: 0 18px 45px rgba(15, 23, 42, 0.9);
}

/* Light mode variant */
html[data-theme="light"] {
  --bg: #f3f4f6;
  --bg-alt: #ffffff;
  --bg-soft: #ffffff;

  --fg: #0f172a;
  --fg-muted: #64748b;

  --accent: #2563eb;
  --accent-soft: rgba(37, 99, 235, 0.08);

  --border-subtle: rgba(203, 213, 225, 0.9);
  --shadow-soft: 0 15px 35px rgba(0, 0, 0, 0.08);
}

/* ========= GLOBAL ========= */

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

body {
  margin: 0;
  min-height: 100vh;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  background: var(--bg);
  color: var(--fg);
}

/* Dark theme background = gradient */
html[data-theme="dark"] body {
  background:
    radial-gradient(circle at top, #1f2937 0, #020617 40%),
    radial-gradient(circle at bottom, #0b1120 0, #020617 55%);
}

/* Light theme background = soft grey */
html[data-theme="light"] body {
  background: #f3f4f6;
}

a {
  color: inherit;
  text-decoration: none;
}

/* ========= HEADER ========= */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(16px);
  background: linear-gradient(
    to right,
    rgba(3, 7, 18, 0.96),
    rgba(15, 23, 42, 0.9)
  );
  border-bottom: 1px solid rgba(148, 163, 184, 0.4);
}

html[data-theme="light"] .site-header {
  background: rgba(249, 250, 251, 0.96);
}

.header-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0.7rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.04em;
}

.logo span {
  color: var(--accent);
}

.nav-links {
  display: flex;
  gap: 1rem;
  font-size: 0.9rem;
}

.nav-links a {
  color: var(--fg-muted);
}

.nav-links a:hover {
  color: var(--fg);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.theme-toggle {
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.7);
  background: transparent;
  padding: 0.25rem 0.55rem;
  font-size: 0.9rem;
  cursor: pointer;
  color: var(--fg-muted);
}

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

/* ========= BUTTONS ========= */

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.55rem 1.1rem;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  background: linear-gradient(135deg, #2563eb, #22c55e);
  color: #f9fafb;
  font-size: 0.9rem;
  font-weight: 500;
  box-shadow: 0 16px 40px rgba(37, 99, 235, 0.55);
}

.btn-small {
  padding: 0.45rem 0.9rem;
  font-size: 0.82rem;
  box-shadow: 0 10px 25px rgba(37, 99, 235, 0.45);
}

.btn-primary:hover {
  filter: brightness(1.05);
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1rem;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.7);
  background: transparent;
  color: var(--fg-muted);
  font-size: 0.9rem;
  cursor: pointer;
}

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

/* ========= HERO ========= */

.hero {
  padding: 2.5rem 1.25rem 2rem;
}

/* Light mode hero a bit brighter */
html[data-theme="light"] .hero {
  background: linear-gradient(180deg, #f9fafb, #e5e7eb);
}

.hero-inner {
  max-width: 1120px;
  margin: 0 auto;
  display: grid;
  gap: 2rem;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
}

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

.hero-text h1 {
  font-size: clamp(1.9rem, 2.4vw + 1.4rem, 2.6rem);
  line-height: 1.15;
  margin-bottom: 0.75rem;
}

.hero-text h1 span {
  display: block;
  font-weight: 500;
  color: var(--accent);
}

.hero-text p {
  margin: 0.4rem 0 1.1rem;
  max-width: 34rem;
  color: var(--fg-muted);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  margin-bottom: 0.6rem;
}

.hero-note {
  font-size: 0.8rem;
  color: var(--fg-muted);
}

/* Hero card */

.hero-card {
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  padding: 1rem 1rem 1.1rem;
  box-shadow: var(--shadow-soft);
}

/* Dark mode hero card: subtle glow */
html[data-theme="dark"] .hero-card {
  background: radial-gradient(circle at top, #1d2539 0, var(--bg-alt) 55%);
}

/* Light mode hero card: clean white */
html[data-theme="light"] .hero-card {
  background: linear-gradient(180deg, #ffffff, #f7f9fc);
}

.hero-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.8rem;
}

.chip {
  font-size: 0.75rem;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  border: 1px solid rgba(96, 165, 250, 0.8);
  background: var(--accent-soft);
  color: var(--accent);
}

.hero-card-title {
  font-size: 0.85rem;
  color: var(--fg-muted);
}

.hero-list {
  list-style: none;
  margin: 0;
  padding-left: 0.2rem;
  font-size: 0.86rem;
  color: var(--fg-muted);
}

.hero-list li {
  margin-bottom: 0.3rem;
}

/* ========= SECTIONS ========= */

.section {
  padding: 2.25rem 1.25rem 2.1rem;
}

.section-alt {
  background: radial-gradient(circle at top, #020617 0, #020617 55%);
}

html[data-theme="light"] .section-alt {
  background: #f3f4f6;
}

.section-inner {
  max-width: 1120px;
  margin: 0 auto;
}

.section-header h2 {
  font-size: 1.45rem;
  margin: 0 0 0.25rem;
}

.section-header p {
  margin: 0;
  color: var(--fg-muted);
}

/* ========= TOOLS GRID ========= */

.tools-grid {
  margin-top: 1.5rem;
  display: grid;
  gap: 1.1rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.tool-card {
  border-radius: var(--radius-lg);
  padding: 1rem 1rem 0.9rem;
  background: var(--bg-soft);
  border: 1px solid rgba(148, 163, 184, 0.5);
  text-decoration: none;
  color: inherit;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.75);
  transition: transform 0.12s ease, box-shadow 0.12s ease,
    border-color 0.12s ease;
}

html[data-theme="light"] .tool-card {
  background: #ffffff;
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.12);
}

.tool-card:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
  box-shadow: 0 18px 36px rgba(37, 99, 235, 0.4);
}

.tool-card h3 {
  margin: 0 0 0.3rem;
  font-size: 1rem;
}

.tool-card p {
  margin: 0 0 0.6rem;
  font-size: 0.9rem;
  color: var(--fg-muted);
}

.tool-link {
  font-size: 0.8rem;
  color: var(--accent);
}

.tool-disabled {
  opacity: 0.7;
  cursor: default;
}

.tool-disabled:hover {
  transform: none;
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.35);
}

/* ========= STEPS ========= */

.steps-grid {
  margin-top: 1.5rem;
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
}

.step-card {
  position: relative;
  border-radius: var(--radius-lg);
  padding: 1rem 1rem 0.9rem 1.1rem;
  background: var(--bg-soft);
  border: 1px solid rgba(148, 163, 184, 0.5);
  box-shadow: 0 14px 32px rgba(15, 23, 42, 0.75);
}

html[data-theme="light"] .step-card {
  background: #ffffff;
  box-shadow: 0 12px 26px rgba(15, 23, 42, 0.15);
}

.step-card h3 {
  margin: 0 0 0.25rem;
  font-size: 1rem;
}

.step-card p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--fg-muted);
}

.step-badge {
  position: absolute;
  top: 0.75rem;
  right: 0.9rem;
  font-size: 0.75rem;
  padding: 0.15rem 0.45rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
}

/* ========= ABOUT GRID ========= */

.about-grid {
  margin-top: 1.5rem;
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
}

.about-card {
  border-radius: var(--radius-lg);
  padding: 0.9rem 1rem;
  background: var(--bg-soft);
  border: 1px solid rgba(148, 163, 184, 0.6);
  font-size: 0.9rem;
  color: var(--fg-muted);
}

html[data-theme="light"] .about-card {
  background: #ffffff;
}

.about-card h3 {
  margin: 0 0 0.25rem;
  font-size: 1rem;
  color: var(--fg);
}

/* ========= FOOTER ========= */

.site-footer {
  border-top: 1px solid rgba(148, 163, 184, 0.4);
  background: #020617;
}

html[data-theme="light"] .site-footer {
  background: #f9fafb;
}

.footer-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0.9rem 1.25rem 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--fg-muted);
}

.footer-links {
  display: flex;
  gap: 0.9rem;
}

.footer-links a {
  color: var(--fg-muted);
}

.footer-links a:hover {
  color: var(--accent);
}

/* ========= RESPONSIVE ========= */

@media (max-width: 768px) {
  .header-inner {
    padding-inline: 1rem;
  }

  .nav-links {
    display: none;
  }

  .footer-inner {
    flex-direction: column;
    gap: 0.4rem;
    align-items: flex-start;
  }
}