/* ===================================
   MERYDS CONSULTING - Cupertino Design
   Apple-inspired Modern CSS
   =================================== */

/* ==================== 
   CSS Variables 
   ==================== */
:root {
  /* Colors - Luxury Navy × Gold Palette */
  --color-white: #FFFFFF;
  --color-navy-dark: #0a1929;
  --color-navy: #1a237e;
  --color-navy-medium: #283593;
  --color-royal-blue: #1e3a8a;
  --color-gold: #D4AF37;
  --color-gold-light: #FFD700;
  --color-gold-accent: #FFA500;
  --color-text-dark: #1a1a1a;
  --color-text-on-dark: #FFFFFF;
  --color-text-medium: #E0E0E0;
  --color-text-light: #B0B0B0;
  --color-gradient-start: #0a1929;
  --color-gradient-middle: #1a237e;
  --color-gradient-end: #D4AF37;
  
  /* Shadows - Luxury Edition */
  --shadow-card: 0 8px 30px rgba(0,0,0,0.5), 0 0 20px rgba(212,175,55,0.1);
  --shadow-card-hover: 0 15px 40px rgba(0,0,0,0.7), 0 0 40px rgba(212,175,55,0.2);
  --shadow-button: 0 4px 12px rgba(212,175,55,0.4);
  --shadow-gold-glow: 0 0 20px rgba(212,175,55,0.5), 0 0 40px rgba(212,175,55,0.3);
  --shadow-text-gold: 0 2px 10px rgba(212,175,55,0.5);
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
  
  /* Transitions */
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==================== 
   Global Reset & Base 
   ==================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Hiragino Sans", "Yu Gothic", "Noto Sans JP", sans-serif;
  color: var(--color-text-on-dark);
  background: linear-gradient(135deg, var(--color-navy-dark) 0%, var(--color-navy) 50%, var(--color-navy-medium) 100%);
  background-attachment: fixed;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  position: relative;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 30%, rgba(212,175,55,0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(212,175,55,0.08) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

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

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition-smooth);
}

/* ==================== 
   Typography 
   ==================== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
  color: var(--color-white);
}

h1 {
  font-size: clamp(3rem, 8vw, 6rem);
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, var(--color-white) 0%, var(--color-gold-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: var(--shadow-text-gold);
  position: relative;
}

h2 {
  font-size: clamp(2.5rem, 6vw, 3.5rem);
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--color-white) 0%, var(--color-gold) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h3 {
  font-size: clamp(2rem, 4vw, 2.5rem);
  letter-spacing: -0.01em;
  color: var(--color-gold-light);
}

p {
  font-size: clamp(1.0625rem, 2vw, 1.1875rem);
  line-height: 1.7;
  color: var(--color-text-medium);
  margin-bottom: var(--spacing-sm);
}

.text-large {
  font-size: clamp(1.25rem, 2.5vw, 1.5rem);
  line-height: 1.6;
}

.text-small {
  font-size: clamp(0.875rem, 1.5vw, 0.9375rem);
}

/* ==================== 
   Container & Layout 
   ==================== */
.container {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section {
  padding: var(--spacing-xl) 0;
  position: relative;
}

.section-hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

/* ==================== 
   Header & Navigation 
   ==================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 25, 41, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 2px solid rgba(212, 175, 55, 0.3);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
  transition: var(--transition-smooth);
}

.header.scrolled {
  background: rgba(10, 25, 41, 0.95);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.7), 0 0 20px rgba(212, 175, 55, 0.2);
  border-bottom: 2px solid rgba(212, 175, 55, 0.5);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem var(--spacing-md);
  max-width: 1440px;
  margin: 0 auto;
}

.logo {
  height: 40px;
  width: auto;
  transition: var(--transition-smooth);
}

.logo:hover {
  transform: scale(1.05);
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-md);
  align-items: center;
}

.nav-link {
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-white);
  padding: 0.5rem 1rem;
  border-radius: 8px;
  transition: var(--transition-smooth);
  position: relative;
}

.nav-link:hover {
  color: var(--color-gold-light);
  background: rgba(212, 175, 55, 0.1);
  text-shadow: 0 0 10px rgba(212, 175, 55, 0.5);
}

.nav-link.active {
  color: var(--color-gold);
  background: rgba(212, 175, 55, 0.15);
  box-shadow: 0 0 15px rgba(212, 175, 55, 0.3);
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0.5rem;
}

.menu-toggle span {
  display: block;
  width: 28px;
  height: 2px;
  background: var(--color-text-dark);
  transition: var(--transition-smooth);
}

/* ==================== 
   Buttons 
   ==================== */
.btn {
  display: inline-block;
  padding: 1rem 2.5rem;
  font-size: 1.0625rem;
  font-weight: 600;
  border-radius: 50px;
  transition: var(--transition-smooth);
  cursor: pointer;
  border: none;
  text-align: center;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-accent) 100%);
  color: var(--color-navy-dark);
  box-shadow: var(--shadow-button);
  font-weight: 700;
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  transition: left 0.5s;
}

.btn-primary:hover::before {
  left: 100%;
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--color-gold-light) 0%, var(--color-gold) 100%);
  transform: translateY(-2px);
  box-shadow: var(--shadow-gold-glow);
}

.btn-secondary {
  background: transparent;
  color: var(--color-gold);
  border: 2px solid var(--color-gold);
  position: relative;
  overflow: hidden;
}

.btn-secondary:hover {
  background: rgba(212, 175, 55, 0.1);
  color: var(--color-gold-light);
  border-color: var(--color-gold-light);
  transform: translateY(-2px);
  box-shadow: 0 0 20px rgba(212, 175, 55, 0.4);
}

.btn-large {
  padding: 1.25rem 3rem;
  font-size: 1.125rem;
}

/* ==================== 
   Cards 
   ==================== */
.card {
  background: rgba(26, 35, 126, 0.4);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: 20px;
  padding: var(--spacing-md);
  box-shadow: var(--shadow-card);
  transition: var(--transition-smooth);
  border: 2px solid rgba(212, 175, 55, 0.3);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--color-gold), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}

.card:hover::before {
  opacity: 1;
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--color-gold);
  background: rgba(26, 35, 126, 0.6);
}

.card-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-sm);
  display: block;
}

.card-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  color: var(--color-text-dark);
}

.card-text {
  color: var(--color-text-medium);
  font-size: 1rem;
  line-height: 1.6;
}

/* ==================== 
   Grid Layout 
   ==================== */
.grid {
  display: grid;
  gap: var(--spacing-md);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

/* ==================== 
   Animations 
   ==================== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes kenburns {
  0% {
    transform: scale(1) translateX(0);
  }
  100% {
    transform: scale(1.1) translateX(-3%);
  }
}

.fade-in-up {
  animation: fadeInUp 0.8s ease-out forwards;
}

.fade-in {
  animation: fadeIn 1s ease-out forwards;
}

.animate-on-scroll {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.animate-on-scroll.animated {
  opacity: 1;
  transform: translateY(0);
}

/* ==================== 
   Scroll Indicator 
   ==================== */
.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateX(-50%) translateY(0);
  }
  40% {
    transform: translateX(-50%) translateY(-10px);
  }
  60% {
    transform: translateX(-50%) translateY(-5px);
  }
}

.scroll-indicator span {
  font-size: 0.875rem;
  color: var(--color-text-light);
  font-weight: 500;
}

.scroll-arrow {
  width: 24px;
  height: 24px;
  border-left: 2px solid var(--color-text-light);
  border-bottom: 2px solid var(--color-text-light);
  transform: rotate(-45deg);
}

/* ==================== 
   Gradient Background - Luxury Edition
   ==================== */
.gradient-bg {
  background: linear-gradient(135deg, 
    var(--color-navy-dark) 0%, 
    var(--color-navy) 40%, 
    var(--color-royal-blue) 70%,
    rgba(212, 175, 55, 0.2) 100%);
  position: relative;
  overflow: hidden;
}

.gradient-bg::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 10% 20%, rgba(212, 175, 55, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 90% 80%, rgba(212, 175, 55, 0.1) 0%, transparent 50%),
    url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="rgba(212,175,55,0.1)" stroke-width="1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)"/></svg>');
  opacity: 0.5;
  pointer-events: none;
}

.gradient-bg::after {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, rgba(212, 175, 55, 0.1) 0%, transparent 70%);
  animation: rotateSlow 20s linear infinite;
  pointer-events: none;
}

@keyframes rotateSlow {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* ==================== 
   Footer 
   ==================== */
.footer {
  background: linear-gradient(180deg, var(--color-navy-dark) 0%, #000000 100%);
  color: var(--color-white);
  padding: var(--spacing-lg) 0 var(--spacing-md);
  border-top: 2px solid var(--color-gold);
  box-shadow: 0 -4px 20px rgba(212, 175, 55, 0.2);
  position: relative;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.footer-section h3 {
  color: var(--color-white);
  font-size: 1.25rem;
  margin-bottom: var(--spacing-sm);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  color: var(--color-text-light);
  font-size: 0.9375rem;
  transition: var(--transition-smooth);
}

.footer-links a:hover {
  color: var(--color-white);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--spacing-md);
  text-align: center;
  color: var(--color-text-light);
  font-size: 0.875rem;
}

/* ==================== 
   Social Icons 
   ==================== */
.social-links {
  display: flex;
  gap: 1rem;
  list-style: none;
}

.social-link {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(212, 175, 55, 0.1);
  border: 2px solid rgba(212, 175, 55, 0.3);
  border-radius: 50%;
  transition: var(--transition-smooth);
}

.social-link:hover {
  background: var(--color-gold);
  border-color: var(--color-gold-light);
  color: var(--color-navy-dark);
  transform: translateY(-3px);
  box-shadow: var(--shadow-gold-glow);
}

.social-link svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

/* ==================== 
   Responsive Design 
   ==================== */

/* Tablet */
@media (max-width: 1023px) {
  :root {
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
  }
  
  .grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  }
}

/* Mobile */
@media (max-width: 767px) {
  :root {
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
  }
  
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  /* Mobile Navigation */
  .menu-toggle {
    display: flex;
  }
  
  .nav-menu {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: var(--spacing-md);
    gap: 0;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-smooth);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  }
  
  .nav-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .nav-link {
    width: 100%;
    padding: 1rem;
    border-radius: 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  }
  
  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }
  
  .btn {
    width: 100%;
    text-align: center;
  }
}

/* ==================== 
   Utility Classes 
   ==================== */
.text-center {
  text-align: center;
}

.text-white {
  color: var(--color-white);
}

.mb-sm {
  margin-bottom: var(--spacing-sm);
}

.mb-md {
  margin-bottom: var(--spacing-md);
}

.mb-lg {
  margin-bottom: var(--spacing-lg);
}

.mt-sm {
  margin-top: var(--spacing-sm);
}

.mt-md {
  margin-top: var(--spacing-md);
}

.mt-lg {
  margin-top: var(--spacing-lg);
}

.hidden {
  display: none;
}

.visible {
  display: block;
}

/* ==================== 
   Luxury Gold Accents 
   ==================== */
.gold-text {
  color: var(--color-gold);
  text-shadow: 0 0 10px rgba(212, 175, 55, 0.5);
}

.gold-border {
  border: 2px solid var(--color-gold);
  box-shadow: 0 0 20px rgba(212, 175, 55, 0.3);
}

.luxury-card {
  background: linear-gradient(135deg, 
    rgba(26, 35, 126, 0.6) 0%, 
    rgba(30, 58, 138, 0.5) 100%);
  border: 2px solid var(--color-gold);
  box-shadow: 
    0 10px 40px rgba(0, 0, 0, 0.6),
    inset 0 1px 0 rgba(212, 175, 55, 0.2);
}

.shimmer {
  position: relative;
  overflow: hidden;
}

.shimmer::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(
    45deg,
    transparent,
    rgba(212, 175, 55, 0.1),
    transparent
  );
  animation: shimmer 3s infinite;
}

@keyframes shimmer {
  0% { transform: translateX(-100%) translateY(-100%); }
  100% { transform: translateX(100%) translateY(100%); }
}

/* Gold divider line */
.gold-divider {
  height: 2px;
  background: linear-gradient(90deg, 
    transparent 0%, 
    var(--color-gold) 50%, 
    transparent 100%);
  box-shadow: 0 0 10px rgba(212, 175, 55, 0.5);
}

/* Premium badge */
.premium-badge {
  background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-accent) 100%);
  color: var(--color-navy-dark);
  padding: 0.5rem 1.5rem;
  border-radius: 50px;
  font-weight: 700;
  box-shadow: var(--shadow-gold-glow);
  display: inline-block;
}

/* Glowing effect */
.glow {
  animation: glow 2s ease-in-out infinite alternate;
}

@keyframes glow {
  from {
    box-shadow: 0 0 10px rgba(212, 175, 55, 0.5);
  }
  to {
    box-shadow: 0 0 30px rgba(212, 175, 55, 0.8);
  }
}

/* ==================== 
   Hero Logo Animation
   ==================== */
@keyframes fadeInScale {
  from {
    opacity: 0;
    transform: scale(0.8);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}