/* ===================================================================
   SubvencijeRadar — Landing Page Stylesheet
   Gov-adjacent dizajn sa modernom primesom
   =================================================================== */

/* --- 1. Design tokens (CSS Custom Properties) ------------------- */
:root {
  /* Primarne boje */
  --color-primary:      #0D4F8C;
  --color-primary-dk:   #0A3A6B;
  --color-primary-lt:   #1A6BB5;

  /* Akcentna boja */
  --color-accent:       #E8A020;
  --color-accent-dk:    #C8881A;

  /* CTA — Telegram zelena */
  --color-cta:          #2A7D3F;
  --color-cta-hover:    #236835;

  /* Neutralne */
  --color-bg:           #FFFFFF;
  --color-bg-alt:       #F4F6F9;
  --color-bg-dark:      #0D1B2E;
  --color-border:       #DDE3EC;
  --color-text:         #1A2332;
  --color-text-muted:   #5A6A7E;
  --color-text-inv:     #FFFFFF;
  --color-text-inv-muted: rgba(255,255,255,0.7);

  /* Tipografija */
  --font-sans:          'Inter', system-ui, -apple-system, sans-serif;
  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-lg:   1.125rem;
  --text-xl:   1.25rem;
  --text-2xl:  1.5rem;
  --text-3xl:  1.875rem;
  --text-4xl:  2.25rem;
  --text-5xl:  3rem;

  /* Razmaci */
  --space-1:   0.25rem;
  --space-2:   0.5rem;
  --space-3:   0.75rem;
  --space-4:   1rem;
  --space-6:   1.5rem;
  --space-8:   2rem;
  --space-12:  3rem;
  --space-16:  4rem;
  --space-20:  5rem;
  --space-24:  6rem;

  /* UI */
  --radius-sm:   4px;
  --radius-md:   8px;
  --radius-lg:   12px;
  --radius-full: 9999px;
  --shadow-sm:   0 1px 3px rgba(13,79,140,0.08), 0 1px 2px rgba(13,79,140,0.06);
  --shadow-md:   0 4px 12px rgba(13,79,140,0.10), 0 2px 4px rgba(13,79,140,0.06);
  --shadow-lg:   0 10px 30px rgba(13,79,140,0.12);
  --transition:  150ms ease;

  /* Layout */
  --container:   1160px;
  --header-h:    68px;
}

/* --- 2. Reset & Base -------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

/* --- 3. Utility ------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

.text-center { text-align: center; }
.text-muted   { color: var(--color-text-muted); }

/* --- 4. Buttons ------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  font-size: var(--text-base);
  font-weight: 600;
  line-height: 1.4;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-cta);
  color: var(--color-text-inv);
  box-shadow: 0 2px 8px rgba(42,125,63,0.25);
}
.btn-primary:hover, .btn-primary:focus-visible {
  background: var(--color-cta-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(42,125,63,0.35);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}
.btn-outline:hover, .btn-outline:focus-visible {
  background: var(--color-primary);
  color: var(--color-text-inv);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-lg);
  border-radius: var(--radius-lg);
}

/* --- 5. Header / Nav -------------------------------------------- */
.site-header {
  position: fixed;
  inset-block-start: 0;
  inset-inline: 0;
  z-index: 100;
  height: var(--header-h);
  background: transparent;
  transition: background var(--transition), box-shadow var(--transition);
}

.site-header.scrolled {
  background: var(--color-bg);
  box-shadow: 0 1px 0 var(--color-border), var(--shadow-sm);
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
}

/* Logo */
.site-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}
.site-logo img { width: 36px; height: 36px; }
.site-logo__name {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text-inv);
  letter-spacing: -0.02em;
}
.site-header.scrolled .site-logo__name { color: var(--color-primary); }

/* Nav links */
.site-nav { display: flex; align-items: center; gap: var(--space-6); }
.site-nav a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-inv-muted);
  transition: color var(--transition);
}
.site-nav a:hover { color: var(--color-text-inv); }
.site-header.scrolled .site-nav a { color: var(--color-text-muted); }
.site-header.scrolled .site-nav a:hover { color: var(--color-primary); }

/* Nav CTA */
.nav-cta .btn-primary { padding: var(--space-2) var(--space-4); }

/* Hamburger (mobile) */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text-inv);
  border-radius: 2px;
  transition: all var(--transition);
}
.site-header.scrolled .nav-toggle span { background: var(--color-primary); }

/* --- 6. Hero ---------------------------------------------------- */
.hero {
  padding-block-start: calc(var(--header-h) + var(--space-16));
  padding-block-end: var(--space-24);
  background:
    linear-gradient(160deg, var(--color-primary-dk) 0%, var(--color-primary) 55%, #1A6BB5 100%);
  position: relative;
  overflow: hidden;
}

/* Subtle radar grid pattern */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 50% 60%, rgba(232,160,32,0.08) 0%, transparent 60%),
    repeating-radial-gradient(circle at 50% 60%,
      transparent 0, transparent 60px, rgba(255,255,255,0.03) 60px, rgba(255,255,255,0.03) 61px);
  pointer-events: none;
}

.hero__inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-8);
}

/* Hero mascot visual */
.hero__visual {
  margin-block-start: var(--space-4);
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero__mascot {
  width: 280px;
  height: 280px;
  object-fit: cover;
  clip-path: circle(50%);
  filter: drop-shadow(0 8px 32px rgba(232,160,32,0.30));
  animation: sr-float 4s ease-in-out infinite;
}

@keyframes sr-float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-10px); }
}

@media (min-width: 900px) {
  .hero__inner {
    flex-direction: row;
    text-align: start;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-12);
  }
  .hero__content {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-8);
  }
  .hero__badge { align-self: flex-start; }
  .hero__actions { justify-content: flex-start; }
  .trust-bar { justify-content: flex-start; }
  .hero__visual {
    flex-shrink: 0;
    margin-block-start: 0;
  }
  .hero__mascot {
    width: 320px;
    height: 320px;
  }
}

@media (max-width: 899px) {
  .hero__mascot {
    width: 180px;
    height: 180px;
  }
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  color: var(--color-accent);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.hero__title {
  font-size: clamp(var(--text-3xl), 5vw, var(--text-5xl));
  font-weight: 800;
  line-height: 1.15;
  color: var(--color-text-inv);
  letter-spacing: -0.03em;
  max-width: 800px;
}

.hero__title em {
  font-style: normal;
  color: var(--color-accent);
}

.hero__sub {
  font-size: clamp(var(--text-base), 2vw, var(--text-xl));
  color: var(--color-text-inv-muted);
  max-width: 600px;
  line-height: 1.6;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  justify-content: center;
}

/* Social proof bar */
.trust-bar {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-6);
  padding-block-start: var(--space-4);
  border-block-start: 1px solid rgba(255,255,255,0.15);
  width: 100%;
  max-width: 600px;
}

.trust-bar__item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-inv-muted);
}

.trust-bar__item strong {
  color: var(--color-text-inv);
  font-weight: 700;
}

/* --- 7. Section layout ------------------------------------------ */
section { padding-block: var(--space-20); }
.section-alt { background: var(--color-bg-alt); }

.section-header {
  text-align: center;
  margin-block-end: var(--space-12);
}

.section-label {
  display: inline-block;
  margin-block-end: var(--space-3);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.section-title {
  font-size: clamp(var(--text-2xl), 3vw, var(--text-4xl));
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-text);
  line-height: 1.2;
}

.section-sub {
  margin-block-start: var(--space-4);
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 560px;
  margin-inline: auto;
}

/* --- 8. Problem section ----------------------------------------- */
.problem-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
}

.problem-card {
  padding: var(--space-8);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  border-block-start: 4px solid #E53E3E;
  box-shadow: var(--shadow-sm);
}

.problem-card__icon {
  font-size: 2rem;
  margin-block-end: var(--space-4);
}

.problem-card__title {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text);
  margin-block-end: var(--space-3);
}

.problem-card__text {
  color: var(--color-text-muted);
  font-size: var(--text-base);
}

/* --- 9. Kako radi (Steps) --------------------------------------- */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-8);
  position: relative;
}

/* Connector line (desktop only) */
@media (min-width: 900px) {
  .steps-grid::before {
    content: '';
    position: absolute;
    inset-block-start: 40px;
    inset-inline: 20%;
    height: 2px;
    background: repeating-linear-gradient(
      90deg,
      var(--color-primary) 0, var(--color-primary) 12px,
      transparent 12px, transparent 20px
    );
    z-index: 0;
  }
}

.step-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-4);
  position: relative;
  z-index: 1;
}

.step-number {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-text-inv);
  font-size: var(--text-2xl);
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 4px 16px rgba(13,79,140,0.3);
}

.step-title {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text);
}

.step-text {
  color: var(--color-text-muted);
  max-width: 280px;
}

/* --- 10. Feature cards ------------------------------------------ */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-6);
}

.feature-card {
  padding: var(--space-8);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
}

.feature-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.feature-card__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--color-bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-block-end: var(--space-4);
}

.feature-card__title {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  margin-block-end: var(--space-2);
}

.feature-card__text {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  line-height: 1.6;
}

.feature-card__stat {
  margin-block-start: var(--space-4);
  font-size: var(--text-xl);
  font-weight: 800;
  color: var(--color-primary);
}

/* --- 11. Trust / Testimonials ----------------------------------- */
.trust-section-bar {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-8);
  padding: var(--space-8);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  margin-block-end: var(--space-12);
  box-shadow: var(--shadow-sm);
}

.trust-badge {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
}

.trust-badge__icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--color-bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
}

.testimonial-card {
  padding: var(--space-6);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.testimonial-card__stars {
  font-size: var(--text-xl);
  margin-block-end: var(--space-3);
  letter-spacing: 2px;
}

.testimonial-card__quote {
  font-style: italic;
  color: var(--color-text);
  margin-block-end: var(--space-4);
  line-height: 1.7;
}

.testimonial-card__author {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.testimonial-card__avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-text-inv);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: var(--text-sm);
  flex-shrink: 0;
}

.testimonial-card__name {
  font-weight: 700;
  font-size: var(--text-sm);
  color: var(--color-text);
}

.testimonial-card__location {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* --- 12. FAQ ---------------------------------------------------- */
.faq-list {
  max-width: 720px;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-bg);
}

.faq-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-5) var(--space-6);
  text-align: start;
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text);
  transition: background var(--transition);
}

.faq-trigger:hover { background: var(--color-bg-alt); }

.faq-trigger[aria-expanded="true"] {
  background: var(--color-bg-alt);
  color: var(--color-primary);
  border-block-end: 1px solid var(--color-border);
}

.faq-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  position: relative;
  color: var(--color-primary);
}

.faq-icon::before,
.faq-icon::after {
  content: '';
  position: absolute;
  inset-inline: 3px;
  inset-block: 50%;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  transform: translateY(-50%);
  transition: transform var(--transition), opacity var(--transition);
}

.faq-icon::after {
  transform: translateY(-50%) rotate(90deg);
}

.faq-trigger[aria-expanded="true"] .faq-icon::after {
  transform: translateY(-50%) rotate(0deg);
  opacity: 0;
}

.faq-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height 300ms ease;
}

.faq-panel[aria-hidden="false"] { max-height: 400px; }

.faq-panel__inner {
  padding: var(--space-5) var(--space-6);
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* --- 13. CTA Final Section -------------------------------------- */
.cta-section {
  background: linear-gradient(135deg, var(--color-primary-dk), var(--color-primary));
  padding-block: var(--space-24);
}

.cta-inner {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-8);
}

.cta-inner .section-title { color: var(--color-text-inv); }
.cta-inner .section-sub   { color: var(--color-text-inv-muted); }

/* --- 14. Footer ------------------------------------------------- */
.site-footer {
  background: var(--color-bg-dark);
  padding-block: var(--space-12);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-8);
  justify-content: space-between;
  align-items: flex-start;
  margin-block-end: var(--space-8);
  padding-block-end: var(--space-8);
  border-block-end: 1px solid rgba(255,255,255,0.1);
}

.footer-brand .site-logo__name {
  color: var(--color-text-inv);
  display: block;
  margin-block-end: var(--space-2);
}

.footer-brand p {
  font-size: var(--text-sm);
  color: var(--color-text-inv-muted);
  max-width: 240px;
}

.footer-links {
  display: flex;
  gap: var(--space-8);
  flex-wrap: wrap;
}

.footer-col h4 {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-inv-muted);
  margin-block-end: var(--space-3);
}

.footer-col ul { display: flex; flex-direction: column; gap: var(--space-2); }

.footer-col a {
  font-size: var(--text-sm);
  color: var(--color-text-inv-muted);
  transition: color var(--transition);
}

.footer-col a:hover { color: var(--color-text-inv); }

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  justify-content: space-between;
  align-items: center;
  font-size: var(--text-xs);
  color: var(--color-text-inv-muted);
}

/* --- 15. Responsive -------------------------------------------- */
@media (max-width: 768px) {
  .site-nav { display: none; }
  .site-nav.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    inset-block-start: var(--header-h);
    inset-inline: 0;
    background: var(--color-bg);
    padding: var(--space-6);
    border-block-end: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    z-index: 99;
    gap: var(--space-4);
  }
  .site-nav.open a { color: var(--color-text); font-size: var(--text-base); }
  .nav-cta { display: none; }
  .nav-toggle { display: flex; }

  .hero {
    padding-block-start: calc(var(--header-h) + var(--space-12));
    padding-block-end: var(--space-16);
  }

  .hero__actions { flex-direction: column; align-items: center; }

  .trust-bar { gap: var(--space-4); }

  .steps-grid::before { display: none; }

  .footer-inner { flex-direction: column; }
  .footer-links { gap: var(--space-6); }
}

@media (max-width: 480px) {
  :root { --space-16: 3rem; --space-20: 4rem; --space-24: 5rem; }

  .btn-lg { padding: var(--space-3) var(--space-6); font-size: var(--text-base); }

  .trust-section-bar { flex-direction: column; align-items: flex-start; }
}

/* --- 16. Focus styles (accessibility) --------------------------- */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* --- 17. Script toggle (Ć/Lat) --------------------------------- */
.script-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.3);
  color: var(--color-text-inv);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
  flex-shrink: 0;
}

.script-toggle:hover,
.script-toggle:focus-visible {
  background: rgba(255,255,255,0.25);
  border-color: rgba(255,255,255,0.5);
}

.site-header.scrolled .script-toggle {
  background: var(--color-bg-alt);
  border-color: var(--color-border);
  color: var(--color-primary);
}

.site-header.scrolled .script-toggle:hover,
.site-header.scrolled .script-toggle:focus-visible {
  background: var(--color-border);
}

@media (max-width: 768px) {
  .script-toggle {
    /* Keep visible on mobile */
    order: -1;
  }
}