/* ===== ROOT VARIABLES ===== */
:root {
  --color-primary: #FFD048;
  --color-primary-dark: #E6B830;
  --color-primary-light: #FFE08A;
  --color-primary-rgb: 255, 208, 72;
  --color-secondary: #4FC3F7;
  --color-secondary-dark: #0398D5;
  --color-secondary-rgb: 79, 195, 247;
  --color-bg-dark: #0D1B3E;
  --color-bg-medium: #1A2F6B;
  --color-bg-dark-rgb: 13, 27, 62;
  --color-bg-medium-rgb: 26, 47, 107;
  --color-error: #FF4444;
  --color-text-primary: rgba(255, 255, 255, 0.9);
  --color-text-secondary: rgba(255, 255, 255, 0.6);
  --color-text-muted: rgba(255, 255, 255, 0.4);
  --font-heading: 'Cinzel', serif;
  --font-body: 'Inter', sans-serif;
  --glow-cyan-text: 0 0 15px rgba(79,195,247,0.8), 0 0 30px rgba(79,195,247,0.5), 2px 2px 4px rgba(0,0,0,1);
  --glow-cyan-subtle: 0 0 10px rgba(79,195,247,0.5), 1px 1px 4px rgba(0,0,0,0.8);
  --glow-gold-text: 0 0 8px rgba(255,208,72,0.8), 1px 1px 4px rgba(0,0,0,1);
  --glow-gold-box: 0 0 12px rgba(255,208,72,0.6), 0 0 6px rgba(255,208,72,0.3);
  --glow-gold-box-strong: 0 0 20px rgba(255,208,72,0.6), 0 0 10px rgba(255,208,72,0.3);
  --radius-sm: 12px;
  --radius-md: 16px;
  --radius-lg: 20px;
  --radius-xl: 25px;
}

/* ===== BASE ===== */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background: var(--color-bg-dark);
  color: var(--color-text-primary);
  margin: 0;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
}
.heading-cyan {
  color: var(--color-secondary);
  text-shadow: var(--glow-cyan-text);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}
.heading-gold {
  color: var(--color-primary);
  text-shadow: var(--glow-gold-text);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.heading-decorator {
  display: block;
  width: 60px;
  height: 1px;
  background: var(--color-primary);
  margin: 0.75rem auto 0;
  position: relative;
}
.heading-decorator::after {
  content: '\25C6';
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  font-size: 8px;
  color: var(--color-primary);
  background: var(--color-bg-dark);
  padding: 0 6px;
}
.section-alt .heading-decorator::after {
  background: var(--color-bg-medium);
}
.hero-title {
  font-size: clamp(2.5rem, 7vw, 4rem);
  letter-spacing: 0.15em;
}
.hero-tagline {
  font-family: var(--font-body);
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--color-text-secondary);
  font-weight: 400;
  max-width: 600px;
  margin: 0 auto;
}

/* ===== NAVIGATION ===== */
.nav-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1rem 1.5rem;
  transition: background 0.3s, border-color 0.3s, backdrop-filter 0.3s;
  border-bottom: 1px solid transparent;
}
.nav-bar.scrolled {
  background: rgba(13, 27, 62, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom-color: rgba(255, 208, 72, 0.15);
}
.nav-link {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color 0.2s, text-shadow 0.2s;
}
.nav-link:hover {
  color: var(--color-secondary);
  text-shadow: var(--glow-cyan-subtle);
}
.nav-cta {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-secondary);
  border: 1.5px solid var(--color-primary);
  border-radius: var(--radius-xl);
  padding: 0.5rem 1.25rem;
  text-decoration: none;
  transition: all 0.3s;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.nav-cta:hover {
  background: rgba(255, 208, 72, 0.1);
  box-shadow: var(--glow-gold-box);
}

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  background: radial-gradient(ellipse at center, var(--color-bg-medium), var(--color-bg-dark));
}
.hero-bg {
  position: absolute;
  inset: 0;
  background: url('images/hero_bg.webp') center/cover no-repeat;
  z-index: 0;
}
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(13,27,62,0.7) 0%, rgba(13,27,62,0.35) 50%, rgba(13,27,62,0.7) 100%);
}
.hero-content {
  position: relative;
  z-index: 10;
  text-align: center;
  padding: 2rem 1.5rem;
}

/* ===== BUTTONS ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--color-bg-dark);
  background: linear-gradient(180deg, var(--color-primary), var(--color-primary-dark));
  border: none;
  border-radius: var(--radius-xl);
  padding: 0.9rem 2.5rem;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.3s;
  box-shadow: 0 4px 15px rgba(255,208,72,0.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--glow-gold-box-strong);
}
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--color-secondary);
  background: transparent;
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-xl);
  padding: 0.75rem 2rem;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.3s;
}
.btn-secondary:hover {
  background: rgba(255,208,72,0.08);
  box-shadow: var(--glow-gold-box);
}

/* ===== SECTIONS ===== */
.section-base {
  padding: 5rem 1.5rem;
  position: relative;
  overflow: hidden;
}
.section-alt {
  background: var(--color-bg-medium);
}
.container {
  max-width: 1100px;
  margin: 0 auto;
  width: 100%;
}
.container-narrow {
  max-width: 800px;
  margin: 0 auto;
  width: 100%;
}

/* ===== CLOUD DIVIDER ===== */
.cloud-divider {
  position: relative;
  height: 80px;
  overflow: hidden;
}
.cloud-divider svg {
  position: absolute;
  bottom: 0;
  width: 100%;
  height: 80px;
}

/* ===== FEATURES TABS ===== */
.tab-btn {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-secondary);
  background: none;
  border: none;
  padding: 0.75rem 1.25rem;
  cursor: pointer;
  position: relative;
  transition: color 0.3s;
  white-space: nowrap;
}
.tab-btn.active {
  color: var(--color-secondary);
  text-shadow: var(--glow-cyan-subtle);
}
.tab-btn::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-secondary);
  transform: scaleX(0);
  transition: transform 0.3s;
}
.tab-btn.active::after {
  transform: scaleX(1);
}
.tab-panel {
  display: none;
  animation: fadeUp 0.5s ease;
}
.tab-panel.active {
  display: block;
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}
.feature-card {
  background: rgba(26, 47, 107, 0.5);
  border: 1.5px solid rgba(255, 208, 72, 0.25);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  backdrop-filter: blur(8px);
  transition: border-color 0.3s, box-shadow 0.3s;
}
.feature-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--glow-gold-box);
}
.feature-icon-wrap {
  width: 80px;
  height: 80px;
  margin: 0 auto 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
}
.feature-icon-wrap img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

/* ===== SCREENSHOTS / DEVICE MOCKUP ===== */
.device-frame {
  position: relative;
  display: inline-block;
  border-radius: 28px;
  padding: 8px;
  background: linear-gradient(145deg, #2a2a3e, #15152a);
  box-shadow: 0 8px 32px rgba(0,0,0,0.5), inset 0 1px 0 rgba(255,255,255,0.05);
  border: 2px solid rgba(255, 208, 72, 0.3);
}
.device-frame img {
  display: block;
  border-radius: 20px;
  width: 100%;
  height: auto;
}
.device-frame-featured {
  max-width: 280px;
}
.screenshots-thumbs {
  display: flex;
  overflow-x: auto;
}
@media (min-width: 769px) {
  .screenshots-thumbs {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    align-content: center;
    overflow: visible;
  }
  .device-frame-thumb {
    max-width: 100px;
  }
}
.device-frame-thumb {
  max-width: 120px;
  flex-shrink: 0;
  cursor: pointer;
  opacity: 0.6;
  transition: opacity 0.3s, border-color 0.3s;
}
.device-frame-thumb.active,
.device-frame-thumb:hover {
  opacity: 1;
  border-color: var(--color-primary);
}

/* ===== CTA SECTION ===== */
.cta-section {
  position: relative;
  background: url('images/cta_bg.webp') center/cover no-repeat,
              linear-gradient(135deg, var(--color-bg-dark), var(--color-bg-medium));
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(13,27,62,0.8), rgba(26,47,107,0.6));
}
.cta-content {
  position: relative;
  z-index: 10;
}

/* ===== FOOTER ===== */
.footer {
  background: var(--color-bg-dark);
  border-top: 1px solid rgba(255, 208, 72, 0.15);
}
.footer a {
  color: var(--color-secondary);
  text-decoration: none;
  transition: color 0.2s;
}
.footer a:hover {
  color: var(--color-primary);
}
.greek-key-border {
  height: 4px;
  background: repeating-linear-gradient(
    90deg,
    var(--color-primary) 0px,
    var(--color-primary) 8px,
    transparent 8px,
    transparent 12px,
    var(--color-primary) 12px,
    var(--color-primary) 16px,
    transparent 16px,
    transparent 20px
  );
  opacity: 0.4;
}

/* ===== LEGAL PAGES ===== */
.legal-content {
  text-align: left;
}
.legal-content h1 {
  text-align: center;
}
.legal-content h2 {
  color: var(--color-primary);
  font-size: 1.35rem;
  margin-top: 2.5rem;
  margin-bottom: 0.75rem;
  text-shadow: var(--glow-gold-text);
}
.legal-content h3 {
  color: var(--color-secondary);
  font-size: 1.1rem;
  margin-top: 1.75rem;
  margin-bottom: 0.5rem;
}
.legal-content p {
  margin-bottom: 1rem;
  color: var(--color-text-primary);
  line-height: 1.7;
}
.legal-content ul {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
}
.legal-content li {
  margin-bottom: 0.5rem;
  line-height: 1.6;
}
.legal-content a {
  color: var(--color-secondary);
  text-decoration: underline;
  text-decoration-color: rgba(79,195,247,0.3);
  text-underline-offset: 3px;
  transition: text-decoration-color 0.2s;
}
.legal-content a:hover {
  text-decoration-color: var(--color-secondary);
}

/* ===== CONTACT FORM ===== */
.form-group {
  margin-bottom: 1.25rem;
}
.form-group label {
  display: block;
  font-family: var(--font-heading);
  font-size: 0.85rem;
  color: var(--color-secondary);
  margin-bottom: 0.4rem;
  letter-spacing: 0.03em;
}
.form-group input[type="text"],
.form-group input[type="email"],
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  background: rgba(13, 27, 62, 0.6);
  border: 2px solid rgba(255, 208, 72, 0.3);
  border-radius: var(--radius-sm);
  color: white;
  font-family: var(--font-body);
  font-size: 1rem;
  transition: border-color 0.3s, box-shadow 0.3s;
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-secondary);
  box-shadow: 0 0 8px rgba(79,195,247,0.3);
}
.form-group textarea {
  resize: vertical;
  min-height: 120px;
}
.form-group input[type="file"] {
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

/* ===== PRIVACY BUTTON ===== */
.privacy-accept-btn {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 200;
  padding: 1rem 1.5rem 1.5rem;
  background: linear-gradient(to top, var(--color-bg-dark) 60%, transparent);
  display: flex;
  justify-content: center;
}
.privacy-accept-btn.hidden {
  display: none;
}
.accept-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-bg-dark);
  background: linear-gradient(180deg, var(--color-primary), var(--color-primary-dark));
  border: none;
  border-radius: var(--radius-xl);
  padding: 0.9rem 3rem;
  cursor: pointer;
  box-shadow: 0 4px 15px rgba(255,208,72,0.4);
  width: 100%;
  max-width: 400px;
}

/* ===== ANIMATIONS ===== */
@keyframes glowPulse {
  0%, 100% { box-shadow: 0 0 12px rgba(255,208,72,0.3); }
  50% { box-shadow: 0 0 24px rgba(255,208,72,0.6), 0 0 12px rgba(255,208,72,0.3); }
}
@keyframes floatDrift {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}
.animate-glow-pulse { animation: glowPulse 3s ease-in-out infinite; }
.animate-float { animation: floatDrift 6s ease-in-out infinite; }

/* ===== LIGHTBOX ===== */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 300;
  background: rgba(0,0,0,0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: zoom-out;
}
.lightbox img {
  max-width: 90vw;
  max-height: 90vh;
  border-radius: 12px;
  box-shadow: 0 0 40px rgba(255,208,72,0.2);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .hero-title { letter-spacing: 0.08em; }
  .section-base { padding: 3.5rem 1rem; }
  .device-frame-featured { max-width: 220px; }
  .device-frame-thumb { max-width: 80px; }
  .tab-btn { font-size: 0.75rem; padding: 0.6rem 0.75rem; }
}