/* ========================================
   CORE TOKENS — Cyber-Luxury Dark
   ======================================== */
:root {
  /* Surfaces */
  --bg-dark: #0a0a0a;
  --bg-elevated: #111;
  --bg-card: color-mix(in oklab, #fff 2%, transparent);

  /* Brand */
  --gold: #d4af37;
  --gold-light: #f3e5ab;
  --gold-deep: #a8862a;

  /* Derived (single source of truth) */
  --gold-glow:        color-mix(in oklab, var(--gold) 15%, transparent);
  --gold-glow-strong: color-mix(in oklab, var(--gold) 40%, transparent);
  --gold-border:      color-mix(in oklab, var(--gold) 20%, transparent);
  --gold-border-hover:color-mix(in oklab, var(--gold) 35%, transparent);

  /* Text */
  --text-main: #f5f5f5;
  --text-muted: #a0a0a0;
  --text-dim: #5a5a5a;

  /* Borders */
  --border-glass: color-mix(in oklab, var(--gold) 10%, transparent);
  --border-subtle: color-mix(in oklab, #fff 5%, transparent);

  /* Type */
  --font-heading: 'Playfair Display', ui-serif, Georgia, serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;

  /* Motion */
  --ease: cubic-bezier(0.25, 0.8, 0.25, 1);
  --t-fast: 180ms var(--ease);
  --t-base: 320ms var(--ease);
  --t-slow: 600ms var(--ease);

  /* Radii & shadows */
  --r-sm: 6px;
  --r-md: 12px;
  --r-lg: 24px;
  --r-pill: 999px;

  --shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.5);
  --shadow-gold: 0 10px 40px var(--gold-glow);

  /* Layout */
  --container: 1200px;
  --gutter: clamp(1rem, 4vw, 2rem);
}

/* ========================================
   RESET
   ======================================== */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  background: var(--bg-dark);
  color: var(--text-main);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  /* Subtle ambient grain/glow */
  background-image:
    radial-gradient(ellipse 80% 50% at 50% -20%, var(--gold-glow), transparent 60%),
    radial-gradient(ellipse 60% 40% at 100% 100%, color-mix(in oklab, var(--gold) 8%, transparent), transparent 70%);
  background-attachment: fixed;
}

img, svg, video { display: block; max-width: 100%; height: auto; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
a { color: inherit; text-decoration: none; }

/* Accessible focus */
:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
  border-radius: 4px;
}

/* Selection */
::selection { background: var(--gold); color: var(--bg-dark); }

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ========================================
   TYPOGRAPHY
   ======================================== */
h1, h2, h3, .logo {
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.15;
}

.section-title {
  text-align: center;
  font-size: clamp(2rem, 4vw, 2.75rem);
  margin-bottom: clamp(2rem, 5vw, 3.5rem);
  background: linear-gradient(180deg, var(--text-main), color-mix(in oklab, var(--text-main) 70%, transparent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.gold-text {
  background: linear-gradient(135deg, var(--gold-light), var(--gold) 50%, var(--gold-deep));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ========================================
   LAYOUT
   ======================================== */
.container {
  width: min(90%, var(--container));
  margin-inline: auto;
}

.grid { display: grid; gap: clamp(1rem, 3vw, 2rem); }
.features-grid { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.steps-grid    { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.benefits-grid { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.gallery-grid  { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.5rem; }

section { padding: clamp(4rem, 9vw, 7rem) 0; }

/* ========================================
   BUTTONS
   ======================================== */
.btn {
  --btn-bg: transparent;
  --btn-fg: var(--text-main);
  --btn-bd: transparent;

  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.95rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  border-radius: var(--r-sm);
  border: 1px solid var(--btn-bd);
  background: var(--btn-bg);
  color: var(--btn-fg);
  transition: transform var(--t-fast), box-shadow var(--t-base),
              background var(--t-base), color var(--t-base), border-color var(--t-base);
  overflow: hidden;
  isolation: isolate;
}

.btn:hover  { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  --btn-bg: linear-gradient(135deg, var(--gold-light), var(--gold) 60%, var(--gold-deep));
  --btn-fg: var(--bg-dark);
  --btn-bd: var(--gold);
  box-shadow: 0 0 20px var(--gold-glow);
}
.btn-primary:hover { box-shadow: 0 0 35px var(--gold-glow-strong); }

/* Sheen sweep */
.btn-primary::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgba(255,255,255,0.35) 50%, transparent 70%);
  transform: translateX(-120%);
  transition: transform var(--t-slow);
  z-index: -1;
}
.btn-primary:hover::before { transform: translateX(120%); }

.btn-secondary {
  --btn-fg: var(--gold);
  --btn-bd: var(--gold);
}
.btn-secondary:hover { --btn-bg: var(--gold-glow); }

.btn-outline-sm {
  padding: 0.55rem 1.25rem;
  font-size: 0.875rem;
  --btn-bd: var(--border-glass);
}
.btn-outline-sm:hover {
  --btn-bd: var(--gold);
  --btn-fg: var(--gold);
}

.w-100 { width: 100%; }

/* ========================================
   GLASS CARD
   ======================================== */
.glass-card {
  position: relative;
  background: var(--bg-card);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border: 1px solid var(--border-glass);
  border-radius: var(--r-md);
  padding: clamp(1.5rem, 3vw, 2rem);
  transition: transform var(--t-base), border-color var(--t-base), box-shadow var(--t-base);
}
.glass-card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, var(--gold-border), transparent 40%, var(--gold-border) 100%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
          mask-composite: exclude;
  opacity: 0;
  transition: opacity var(--t-base);
  pointer-events: none;
}
.glass-card:hover {
  transform: translateY(-6px);
  border-color: var(--gold-border-hover);
  box-shadow: var(--shadow-gold);
}
.glass-card:hover::before { opacity: 1; }

/* ========================================
   NAVBAR
   ======================================== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 50;
  padding: 1.25rem 0;
  background: color-mix(in oklab, var(--bg-dark) 75%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
}
.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.logo {
  font-size: 1.6rem;
  letter-spacing: 0.15em;
}
.logo span { color: var(--gold); }

/* ========================================
   HERO
   ======================================== */
.hero {
  padding: clamp(4rem, 8vw, 7rem) 0;
  min-height: 80vh;
  display: flex;
  align-items: center;
}
.hero-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: clamp(2rem, 6vw, 4rem);
}
.hero-content { flex: 1; }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.85rem;
  background: var(--gold-glow);
  color: var(--gold);
  border: 1px solid var(--gold-border);
  border-radius: var(--r-pill);
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.hero h1 {
  font-size: clamp(2.25rem, 6vw, 4.25rem);
  margin-bottom: 1.5rem;
}
.hero p {
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  max-width: 50ch;
}
.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

/* Hero Mockup */
.hero-mockup {
  flex: 1;
  display: flex;
  justify-content: center;
  position: relative;
}
.glow-effect {
  position: absolute;
  inset: 50% auto auto 50%;
  width: 320px;
  height: 320px;
  translate: -50% -50%;
  background: var(--gold);
  filter: blur(120px);
  opacity: 0.18;
  z-index: 0;
  animation: pulse 6s var(--ease) infinite;
}
@keyframes pulse {
  50% { opacity: 0.32; transform: scale(1.1); }
}

.phone-frame {
  position: relative;
  z-index: 1;
  width: 300px;
  height: 600px;
  background: linear-gradient(145deg, #1a1a1a, #000);
  border: 2px solid #333;
  border-radius: 40px;
  padding: 12px;
  box-shadow:
    inset 0 0 20px rgba(255,255,255,0.05),
    0 30px 60px rgba(0,0,0,0.8),
    0 0 0 1px var(--gold-border);
  animation: float 6s ease-in-out infinite;
}
@keyframes float {
  50% { transform: translateY(-12px); }
}
.phone-screen {
  width: 100%;
  height: 100%;
  background: var(--bg-elevated);
  border-radius: 28px;
  overflow: hidden;
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.mockup-header {
  text-align: center;
  font-family: var(--font-heading);
  color: var(--gold);
  font-size: 1.4rem;
  letter-spacing: 0.15em;
  border-bottom: 1px solid #2a2a2a;
  padding-bottom: 1rem;
}
.mockup-item {
  display: flex;
  justify-content: space-between;
  font-size: 1rem;
  color: var(--text-muted);
  border-bottom: 1px dashed #2a2a2a;
  padding-bottom: 0.5rem;
}
.mockup-item span { color: var(--gold); font-weight: 600; }
.mockup-btn {
  margin-top: auto;
  background: linear-gradient(135deg, var(--gold-light), var(--gold));
  color: #000;
  text-align: center;
  padding: 0.9rem;
  border-radius: 8px;
  font-weight: 700;
  letter-spacing: 0.05em;
}

/* ========================================
   FEATURES / CARDS
   ======================================== */
.icon-gold {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  border-radius: var(--r-sm);
  background: var(--gold-glow);
  color: var(--gold);
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
}
.card h3 { margin-bottom: 0.75rem; font-size: 1.25rem; }
.card p  { color: var(--text-muted); font-size: 0.95rem; }

/* ========================================
   HOW IT WORKS
   ======================================== */
.step-card {
  position: relative;
  padding: 2rem 2rem 2rem 2.5rem;
  border-left: 1px solid var(--border-subtle);
  isolation: isolate;
}
.step-number {
  font-family: var(--font-heading);
  font-size: clamp(3rem, 6vw, 5rem);
  background: linear-gradient(180deg, var(--gold-glow-strong), transparent);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  position: absolute;
  top: -0.5rem;
  left: 0.5rem;
  z-index: -1;
  line-height: 1;
}

/* ========================================
   BENEFITS
   ======================================== */
.benefit-item {
  text-align: center;
  padding: clamp(2rem, 4vw, 3rem) 1.5rem;
}
.benefit-item h3 {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  margin-bottom: 0.5rem;
  color: var(--gold);
}

/* ========================================
   GALLERY
   ======================================== */
.gallery-item {
  height: clamp(280px, 40vw, 400px);
  background-color: var(--bg-elevated);
  border-radius: var(--r-md);
  border: 1px solid var(--border-subtle);
  background-size: cover;
  background-position: center;
  transition: transform var(--t-base), border-color var(--t-base), box-shadow var(--t-base);
}
.gallery-item:hover {
  transform: scale(1.02);
  border-color: var(--gold-border-hover);
  box-shadow: var(--shadow-gold);
}
/* Dodajemo url() i spajamo sa gradijentom za bolji efekt */
.mockup-bg-1 { 
  background: linear-gradient(rgba(0,0,0,0.3), rgba(0,0,0,0.3)), url('img/slika1.png'); 
  background-size: cover;
  background-position: center;
}

.mockup-bg-2 { 
  background: linear-gradient(rgba(0,0,0,0.3), rgba(0,0,0,0.3)), url('img/slika2.png'); 
  background-size: cover;
  background-position: center;
}

/*.mockup-bg-3 { 
  background: linear-gradient(rgba(0,0,0,0.3), rgba(0,0,0,0.3)), url('img/slika3.png'); 
  background-size: cover;
  background-position: center;
}*/

/* ========================================
   CONTACT FORM
   ======================================== */
.contact-wrapper { max-width: 600px; margin-inline: auto; }
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.input-group { position: relative; }
.input-group input,
.input-group textarea {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 1px solid #2a2a2a;
  padding: 0.95rem 0;
  color: var(--text-main);
  font: inherit;
  outline: none;
  transition: border-color var(--t-base);
}
.input-group input::placeholder,
.input-group textarea::placeholder { color: var(--text-dim); }
.input-group input:focus,
.input-group textarea:focus { border-bottom-color: var(--gold); }

/* ========================================
   FOOTER
   ======================================== */
footer {
  padding: 3rem 0;
  border-top: 1px solid var(--border-subtle);
  text-align: center;
}
.footer-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
}
.footer-logo { font-family: var(--font-heading); font-size: 1.4rem; font-weight: 700; }
.footer-logo span { color: var(--gold); }
.footer-social {
  color: var(--text-muted);
  font-size: 1.05rem;
  transition: color var(--t-base);
}
.footer-social:hover { color: var(--gold); }
.copyright { color: var(--text-dim); font-size: 0.85rem; }

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 992px) {
  .hero-container { flex-direction: column; text-align: center; }
  .hero-content   { display: flex; flex-direction: column; align-items: center; }
  .hero p         { margin-inline: auto; }
  .step-card      { border-left: none; border-top: 1px solid var(--border-subtle); padding-left: 2rem; }
}

@media (max-width: 768px) {
  .hero-buttons { width: 100%; max-width: 320px; flex-direction: column; }
  .phone-frame  { width: 260px; height: 520px; }
}

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