/* ================================================================
   photo life partners Software — Global Styles
   ================================================================ */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,300;0,400;0,600;1,300;1,400&family=Montserrat:wght@300;400;500;600&family=Noto+Sans+JP:wght@300;400;500&display=swap');

/* --- Design Tokens --- */
:root {
  --color-bg:            #0d0f14;
  --color-bg-surface:    #161b27;
  --color-bg-card:       #1e2535;
  --color-bg-card-hover: #232d42;
  --color-accent-gold:   #c8a96e;
  --color-accent-gold-dim: #9e7f4a;
  --color-accent-silver: #8a9bb0;
  --color-text-primary:  #e8edf4;
  --color-text-secondary:#7a8ba0;
  --color-border:        #2a3547;
  --color-border-light:  #3a4a60;

  --font-heading: 'Cormorant Garamond', Georgia, serif;
  --font-body:    'Noto Sans JP', sans-serif;
  --font-label:   'Montserrat', sans-serif;

  --space-xs:  0.5rem;
  --space-sm:  1rem;
  --space-md:  2rem;
  --space-lg:  4rem;
  --space-xl:  8rem;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;

  --transition-base: 0.3s ease;
  --transition-slow: 0.6s cubic-bezier(0.16, 1, 0.3, 1);

  --max-width: 1200px;
  --header-height: 72px;
}

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

[hidden] {
  display: none !important;
}

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

body {
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  font-family: var(--font-body);
  font-weight: 300;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

/* --- Typography --- */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: 0.02em;
}

.section-label {
  font-family: var(--font-label);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent-gold);
}

/* --- Layout --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

section {
  padding: var(--space-xl) 0;
}

/* --- Gold Divider --- */
.gold-line {
  display: block;
  width: 48px;
  height: 1px;
  background: linear-gradient(90deg, var(--color-accent-gold), transparent);
  margin: var(--space-sm) 0 var(--space-md);
}

/* ================================================================
   Header / Navigation
   ================================================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-height);
  display: flex;
  align-items: center;
  transition: background-color var(--transition-base),
              border-color var(--transition-base),
              backdrop-filter var(--transition-base);
  border-bottom: 1px solid transparent;
}

.site-header.scrolled {
  background-color: rgba(13, 15, 20, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom-color: var(--color-border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

/* Logo */
.logo {
  display: flex;
  flex-direction: column;
  gap: 1px;
  line-height: 1;
}

.logo-main {
  font-family: var(--font-label);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--color-text-primary);
}

.logo-main span {
  color: var(--color-accent-gold);
}

.logo-sub {
  font-family: var(--font-label);
  font-size: 0.6rem;
  font-weight: 300;
  letter-spacing: 0.25em;
  color: var(--color-text-secondary);
  text-transform: uppercase;
}

/* Nav */
.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.nav-links a {
  font-family: var(--font-label);
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  transition: color var(--transition-base);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--color-accent-gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.nav-links a:hover {
  color: var(--color-text-primary);
}

.nav-links a:hover::after {
  transform: scaleX(1);
}

/* Hamburger (mobile) */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 1.5px;
  background: var(--color-text-primary);
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.hamburger.active span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* Mobile nav */
.mobile-nav {
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  background: rgba(13, 15, 20, 0.97);
  backdrop-filter: blur(20px);
  padding: var(--space-md);
  border-bottom: 1px solid var(--color-border);
  transform: translateY(-110%);
  transition: transform var(--transition-slow);
  z-index: 99;
}

.mobile-nav.open {
  transform: translateY(0);
}

.mobile-nav a {
  display: block;
  padding: var(--space-sm) 0;
  font-family: var(--font-label);
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  border-bottom: 1px solid var(--color-border);
  transition: color var(--transition-base);
}

.mobile-nav a:hover {
  color: var(--color-accent-gold);
}

/* ================================================================
   Beta Banner
   ================================================================ */
.beta-banner {
  background: rgba(200, 169, 110, 0.08);
  border: 1px solid rgba(200, 169, 110, 0.3);
  border-radius: var(--radius-md);
  padding: 0.85rem var(--space-md);
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: var(--space-lg);
}

.beta-banner-icon {
  font-size: 1.1rem;
  flex-shrink: 0;
  margin-top: 0.05rem;
}

.beta-banner-body {
  flex: 1;
}

.beta-banner-title {
  font-family: var(--font-label);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent-gold);
  margin-bottom: 0.25rem;
}

.beta-banner-text {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.beta-banner-text a {
  color: var(--color-accent-gold);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: opacity var(--transition-base);
}

.beta-banner-text a:hover {
  opacity: 0.75;
}

/* Top page beta notice (in products section) */
.beta-notice-bar {
  background: rgba(200, 169, 110, 0.07);
  border: 1px solid rgba(200, 169, 110, 0.2);
  border-radius: var(--radius-sm);
  padding: 0.65rem var(--space-md);
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: var(--space-md);
  font-size: 0.82rem;
  color: var(--color-text-secondary);
}

.beta-notice-bar-icon {
  color: var(--color-accent-gold);
  flex-shrink: 0;
}

.beta-notice-bar a {
  color: var(--color-accent-gold);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ================================================================
   Footer
   ================================================================ */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-lg) 0 var(--space-md);
  margin-top: var(--space-xl);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.footer-copy {
  font-family: var(--font-label);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--color-text-secondary);
}

.footer-nav {
  display: flex;
  gap: var(--space-md);
}

.footer-nav a {
  font-family: var(--font-label);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--color-text-secondary);
  transition: color var(--transition-base);
}

.footer-nav a:hover {
  color: var(--color-accent-gold);
}

/* ================================================================
   Scroll Animations
   ================================================================ */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }

/* ================================================================
   Buttons
   ================================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-label);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 0.85rem 2rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
  cursor: pointer;
  border: none;
  text-decoration: none;
}

.btn-gold {
  background: var(--color-accent-gold);
  color: var(--color-bg);
}

.btn-gold:hover {
  background: #d4b87a;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(200, 169, 110, 0.3);
}

.btn-outline {
  background: transparent;
  color: var(--color-text-primary);
  border: 1px solid var(--color-border-light);
}

.btn-outline:hover {
  border-color: var(--color-accent-gold);
  color: var(--color-accent-gold);
  transform: translateY(-2px);
}

/* ================================================================
   Responsive
   ================================================================ */
@media (max-width: 768px) {
  :root {
    --space-lg: 3rem;
    --space-xl: 5rem;
  }

  .nav-links {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  section {
    padding: var(--space-lg) 0;
  }
}