/* ===== Preloader ===== */
.preloader {
  position: fixed;
  inset: 0;
  background: var(--color-primary);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: var(--space-lg);
}

.preloader-logo {
  font-family: var(--font-logo);
  font-size: var(--text-5xl);
  color: var(--color-white);
}

.preloader-logo span {
  display: inline-block;
  opacity: 0;
  transform: translateY(40px);
}

.preloader-tagline {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  color: rgba(255, 255, 255, 0.8);
  opacity: 0;
}

.preloader-bar {
  width: clamp(150px, 30vw, 200px);
  height: 4px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 4px;
  overflow: hidden;
}

.preloader-progress {
  width: 0%;
  height: 100%;
  background: var(--color-white);
  border-radius: 4px;
}

/* ===== Hamburger Navigation ===== */
.hamburger-nav {
  position: fixed;
  top: clamp(15px, 3vw, 30px);
  right: clamp(15px, 3vw, 30px);
  z-index: 1000;
  display: flex;
  align-items: center;
  gap: clamp(8px, 1.5vw, 12px);
}

/* ===== Sign In Button with Interactive Face ===== */
.signin-btn {
  display: flex;
  align-items: center;
  gap: clamp(4px, 1vw, 8px);
  padding: clamp(6px, 1vw, 8px) clamp(10px, 2vw, 16px) clamp(6px, 1vw, 8px) clamp(6px, 1vw, 8px);
  background: var(--color-white);
  border-radius: 100px;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.15);
  transition: all 0.3s ease;
  text-decoration: none;
  cursor: pointer;
}

.signin-btn:hover {
  transform: scale(1.05);
  box-shadow: 0 6px 35px rgba(0, 0, 0, 0.2);
}

.face-icon {
  display: block;
  flex-shrink: 0;
  width: clamp(35px, 5vw, 50px);
  height: clamp(28px, 4vw, 40px);
}

.face-icon .pupil {
  transition: cx 0.1s ease-out, cy 0.1s ease-out;
}

.face-icon .blink,
.face-icon .closed-eye {
  transition: opacity 0.05s ease-out;
}

.signin-text {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
}

.hamburger-btn {
  width: clamp(44px, 5vw, 56px);
  height: clamp(44px, 5vw, 56px);
  background: var(--color-white);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: clamp(4px, 0.8vw, 6px);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.15);
  transition: all 0.3s ease;
}

.hamburger-btn:hover {
  transform: scale(1.05);
  box-shadow: 0 6px 35px rgba(0, 0, 0, 0.2);
}

.hamburger-btn span {
  display: block;
  width: clamp(16px, 2.5vw, 22px);
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
  transition: all 0.3s ease;
}

/* Hamburger animation when open */
.hamburger-btn.active span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.hamburger-btn.active span:nth-child(2) {
  opacity: 0;
}

.hamburger-btn.active span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* Menu Panel */
.nav-panel {
  position: fixed;
  top: 0;
  right: -320px;
  width: min(300px, 85vw);
  height: 100vh;
  background: var(--color-white);
  box-shadow: -5px 0 30px rgba(0, 0, 0, 0.15);
  padding: var(--space-2xl) var(--space-lg) var(--space-lg);
  transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 999;
  display: flex;
  flex-direction: column;
}

.nav-panel.active {
  right: 0;
}

.nav-panel-logo {
  font-family: var(--font-logo);
  font-size: var(--text-2xl);
  color: var(--color-primary);
  margin-bottom: var(--space-xl);
}

.nav-menu {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  list-style: none;
  margin-bottom: var(--space-lg);
}

.nav-link {
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--color-text);
  transition: all 0.3s ease;
  padding: var(--space-xs) 0;
  border-bottom: 2px solid transparent;
}

.nav-link:hover {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  padding-left: 10px;
}

.nav-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: clamp(10px, 2vw, 14px) clamp(16px, 3vw, 24px);
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: 100px;
  font-size: var(--text-base);
  font-weight: 500;
  transition: all 0.3s ease;
  margin-top: auto;
}

.nav-cta:hover {
  background: var(--color-primary-dark);
  transform: scale(1.02);
}

.nav-cta-icon {
  width: clamp(20px, 3vw, 24px);
  height: clamp(20px, 3vw, 24px);
  background: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-cta-icon svg {
  width: clamp(10px, 1.5vw, 12px);
  height: clamp(10px, 1.5vw, 12px);
  fill: var(--color-primary);
}

/* Overlay when menu is open */
.nav-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.3);
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  z-index: 998;
}

.nav-overlay.active {
  opacity: 1;
  visibility: visible;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: clamp(8px, 1.5vw, 12px);
  padding: clamp(12px, 2vw, 16px) clamp(20px, 3vw, 28px);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 500;
  border-radius: 100px;
  border: none;
  cursor: pointer;
  transition: all 0.4s var(--ease-smooth);
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(99, 102, 241, 0.3);
}

.btn-icon {
  width: clamp(22px, 3vw, 28px);
  height: clamp(22px, 3vw, 28px);
  background: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.3s ease;
}

.btn:hover .btn-icon {
  transform: translateX(4px);
}

.btn-icon svg {
  width: clamp(10px, 1.5vw, 14px);
  height: clamp(10px, 1.5vw, 14px);
  fill: currentColor;
}

.btn-orange { background: var(--color-orange); color: var(--color-white); }
.btn-orange:hover { background: #D94420; box-shadow: 0 10px 30px rgba(240, 78, 35, 0.3); }

.btn-yellow { background: var(--color-yellow); color: var(--color-text); }
.btn-yellow:hover { background: #D4D41A; box-shadow: 0 10px 30px rgba(232, 232, 28, 0.4); }

.btn-sky { background: var(--color-sky); color: var(--color-white); }
.btn-sky:hover { background: #5AB5D8; box-shadow: 0 10px 30px rgba(107, 197, 232, 0.4); }

.btn-purple { background: var(--color-purple); color: var(--color-white); }
.btn-purple:hover { background: #9333EA; box-shadow: 0 10px 30px rgba(168, 85, 247, 0.4); }

.btn-green { background: var(--color-green); color: var(--color-text); }
.btn-green:hover { background: #25C070; box-shadow: 0 10px 30px rgba(45, 216, 129, 0.4); }

.btn-white { background: var(--color-white); color: var(--color-primary); }
.btn-white:hover { background: var(--color-bg-cream); box-shadow: 0 15px 40px rgba(0, 0, 0, 0.2); }

/* ===== Floating Content Cards ===== */
.content-card {
  position: relative;
  z-index: 10;
  background: var(--color-white);
  border-radius: clamp(16px, 3vw, 24px);
  padding: var(--size-card-padding);
  max-width: min(500px, 95vw);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
  opacity: 0;
  transform: translateY(60px);
}

.content-card-title {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: 500;
  line-height: 1.1;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.content-card-text {
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--color-text-light);
  margin-bottom: var(--space-md);
}

/* ===== Scroll Indicator Dots ===== */
.scroll-dots {
  position: fixed;
  left: clamp(15px, 2vw, 30px);
  top: 50%;
  transform: translateY(-50%);
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: clamp(8px, 1.5vw, 12px);
  opacity: 0;
  transition: opacity 0.5s ease;
}

.scroll-dots.visible {
  opacity: 1;
}

.scroll-dot-item {
  width: clamp(8px, 1.2vw, 10px);
  height: clamp(8px, 1.2vw, 10px);
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.2);
  transition: all 0.3s ease;
  cursor: pointer;
}

.scroll-dot-item.active {
  background: var(--color-primary);
  transform: scale(1.3);
}

@media (max-width: 768px) {
  .scroll-dots { display: none; }
}

/* ===== Mobile Responsive Adjustments ===== */
@media (max-width: 480px) {
  .content-card {
    padding: var(--space-md);
    margin: 0 var(--space-sm);
  }

  .content-card-title {
    font-size: var(--text-2xl);
  }

  .content-card-text {
    font-size: var(--text-sm);
  }

  .btn {
    padding: clamp(10px, 2vw, 14px) clamp(16px, 3vw, 24px);
    font-size: var(--text-sm);
  }

  .hamburger-nav {
    top: 10px;
    right: 10px;
  }

  .signin-btn {
    padding: 6px 12px 6px 6px;
  }

  .signin-text {
    font-size: 0.8rem;
  }

  .hamburger-btn {
    width: 44px;
    height: 44px;
  }
}