/* =========================================================
   BudgetBuddy — Static Website Styles
   Theme: Dark, Material-inspired, Blue accent
   ========================================================= */

/* ----- Reset & Base ------------------------------------ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  /* Colors */
  --color-bg:           #001E3C;
  --color-bg-card:      #0A2744;
  --color-bg-card-hover:#0d3159;
  --color-surface:      #051428;
  --color-primary:      #3399FF;
  --color-primary-light:#66B2FF;
  --color-primary-dark: #0059B2;
  --color-text:         #FFFFFF;
  --color-text-muted:   #B2BAC2;
  --color-divider:      rgba(194, 224, 255, 0.10);
  --color-success:      #1DB45A;

  /* Typography */
  --font-family: 'Inter', system-ui, -apple-system, sans-serif;
  --font-size-base: 16px;

  /* Spacing */
  --section-padding: clamp(4rem, 8vw, 7rem);
  --container-max:   1100px;

  /* Radii */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;

  /* Transitions */
  --transition: 0.2s ease;
}

html {
  font-size: var(--font-size-base);
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

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

img {
  display: block;
  max-width: 100%;
}

/* ----- Utility ----------------------------------------- */
.container {
  width: min(var(--container-max), 100% - 2rem);
  margin-inline: auto;
}

.gradient-text {
  background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-primary) 60%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ----- Buttons ----------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-family);
  font-weight: 500;
  border-radius: var(--radius-sm);
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition), color var(--transition), opacity var(--transition);
  white-space: nowrap;
  text-decoration: none;
}

.btn--sm  { padding: 0.4rem 0.9rem;  font-size: 0.875rem; }
.btn--lg  { padding: 0.75rem 1.5rem; font-size: 1rem;     }

.btn--primary {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}
.btn--primary:hover { opacity: 0.88; }

.btn--outline {
  background: transparent;
  border-color: var(--color-primary);
  color: var(--color-primary-light);
}
.btn--outline:hover {
  background: rgba(51, 153, 255, 0.10);
}

.btn--ghost {
  background: transparent;
  border-color: var(--color-divider);
  color: var(--color-text-muted);
}
.btn--ghost:hover {
  background: var(--color-divider);
  color: var(--color-text);
}

/* ----- Navigation -------------------------------------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(0, 30, 60, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-divider);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 0.875rem;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.nav__logo img {
  border-radius: 8px;
}

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

/* ----- Hero -------------------------------------------- */
.hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(5rem, 12vw, 9rem) clamp(5rem, 10vw, 8rem);
  text-align: center;
}

.hero__glow {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 60% at 50% -10%, rgba(51, 153, 255, 0.25) 0%, transparent 70%),
    radial-gradient(ellipse 40% 40% at 20% 80%,  rgba(51, 153, 255, 0.08) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
}

.hero__inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.badge {
  display: inline-block;
  background: rgba(51, 153, 255, 0.15);
  border: 1px solid rgba(51, 153, 255, 0.3);
  color: var(--color-primary-light);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  padding: 0.3rem 0.85rem;
  border-radius: 999px;
}

.hero__title {
  font-size: clamp(2.4rem, 6.5vw, 4.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  max-width: 14ch;
}

.hero__sub {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--color-text-muted);
  max-width: 52ch;
  line-height: 1.7;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
  margin-top: 0.5rem;
}

/* ----- Section shared ---------------------------------- */
.section-header {
  text-align: center;
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}

.section-title {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}

.section-sub {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  max-width: 52ch;
  margin-inline: auto;
}

/* ----- Features ---------------------------------------- */
.features {
  padding-block: var(--section-padding);
  border-top: 1px solid var(--color-divider);
}

.features__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr));
  gap: 1.25rem;
}

.feature-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: background var(--transition), border-color var(--transition), transform var(--transition);
}

.feature-card:hover {
  background: var(--color-bg-card-hover);
  border-color: rgba(51, 153, 255, 0.3);
  transform: translateY(-2px);
}

.feature-card__icon {
  width: 44px;
  height: 44px;
  background: rgba(51, 153, 255, 0.12);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary-light);
  flex-shrink: 0;
}

.feature-card__icon svg {
  width: 22px;
  height: 22px;
}

.feature-card h3 {
  font-size: 1rem;
  font-weight: 600;
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ----- CTA Section ------------------------------------- */
.cta-section {
  padding-block: var(--section-padding);
  border-top: 1px solid var(--color-divider);
}

.cta-section__inner {
  background: linear-gradient(135deg, #0A2744 0%, #051e40 100%);
  border: 1px solid rgba(51, 153, 255, 0.2);
  border-radius: var(--radius-lg);
  padding: clamp(2.5rem, 6vw, 4.5rem);
  text-align: center;
}

.cta-section__content h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}

.cta-section__content p {
  color: var(--color-text-muted);
  font-size: 1.05rem;
  margin-bottom: 2rem;
  max-width: 48ch;
  margin-inline: auto;
}

.cta-section__buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
}

/* ----- Footer ------------------------------------------ */
.footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-divider);
  padding-block: 2.5rem;
}

.footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
  text-align: center;
}

.footer__brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1rem;
}

.footer__brand img {
  border-radius: 6px;
}

.footer__links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.25rem 1.5rem;
  font-size: 0.9rem;
}

.footer__links a {
  color: var(--color-text-muted);
  transition: color var(--transition);
}
.footer__links a:hover { color: var(--color-text); }

.footer__copy {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* ----- Browser Mockup ---------------------------------- */
.hero__mockup {
  width: min(1000px, 100%);
  margin-top: 1rem;
}

.browser-frame {
  background: #0A1929;
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow:
    0 0 0 1px rgba(51, 153, 255, 0.15),
    0 24px 64px rgba(0, 0, 0, 0.5),
    0 8px 24px rgba(0, 0, 0, 0.3);
}

.browser-frame__bar {
  background: #071422;
  padding: 0.55rem 0.9rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  border-bottom: 1px solid var(--color-divider);
}

.browser-frame__dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  flex-shrink: 0;
}
.browser-frame__dot:nth-child(1) { background: #FF5F57; }
.browser-frame__dot:nth-child(2) { background: #FEBC2E; }
.browser-frame__dot:nth-child(3) { background: #28C840; }

.browser-frame__address {
  flex: 1;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--color-divider);
  border-radius: 4px;
  text-align: center;
  font-size: 0.72rem;
  color: var(--color-text-muted);
  padding: 0.2rem 0.6rem;
  max-width: 260px;
  margin-inline: auto;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.browser-frame img {
  width: 100%;
  height: auto;
  display: block;
}

/* ----- Responsive -------------------------------------- */
@media (max-width: 600px) {
  .nav__links .btn--ghost {
    display: none;
  }

  .hero__title {
    max-width: none;
  }

  .browser-frame__address {
    display: none;
  }
}