/* =============================================
   BASE & VARIABLES
   ============================================= */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@300;400;500;700;900&display=swap');

:root {
  --black:       #0a0a0a;
  --dark:        #111111;
  --panel:       #181818;
  --border:      #2a2a2a;
  --accent:      #8b1a1a;
  --accent-bright: #b22222;
  --accent-glow: #c0392b;
  --text:        #e8e8e8;
  --text-muted:  #888888;
  --white:       #ffffff;
  --nav-height:  64px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

body {
  font-family: 'Noto Sans JP', sans-serif;
  background-color: var(--black);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
}

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

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

/* =============================================
   NOISE TEXTURE OVERLAY
   ============================================= */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 9999;
  opacity: 0.4;
}

/* =============================================
   NAV
   ============================================= */
#navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--nav-height);
    background: rgba(10, 10, 10, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;

    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    padding: 0 2rem;
}

.nav-logo {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--white);
}

.nav-logo span {
  color: var(--accent-bright);
}

.nav-links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
}

.nav-links a {
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
  transition: color 0.2s ease;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent-bright);
  transition: width 0.3s ease;
}

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

.nav-links a:hover::after {
  width: 100%;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
  z-index: 1001;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  transition: all 0.3s ease;
  transform-origin: center;
}

.hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.hamburger.open span:nth-child(2) {
  opacity: 0;
}
.hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile nav drawer */
.mobile-menu {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  width: 100%;
  background: rgba(26, 26, 26, 0.98);
  border-bottom: 1px solid var(--border);
  padding: 1.5rem 2rem;
  z-index: 999;
  transform: translateY(-110%);
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.mobile-menu ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.mobile-menu a {
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
  transition: color 0.2s;
}

.mobile-menu a:hover {
  color: var(--white);
}

/* =============================================
   HERO / PAGE TOP PADDING
   ============================================= */
.page-top {
  padding-top: var(--nav-height);
}

/* =============================================
   SECTION BASE
   ============================================= */
section {
  padding: 6rem 2rem;
  max-width: 1100px;
  margin: 0 auto;
}

.section-label {
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--accent-bright);
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* .section-label::before {
  content: '';
  display: inline-block;
  width: 24px;
  height: 1px;
  background: var(--accent-bright);
} */

.section-divider {
  width: 100%;
  height: 1px;
  background: linear-gradient(to right, var(--accent), transparent);
  margin: 0;
}

/* =============================================
   ABOUT SECTION
   ============================================= */
#about {
    padding-top: 5rem;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    margin-top: 2.5rem;

    background-image: url("images/vermilion_concept_1.png");
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;

    padding: 2rem;
    position: relative;
}

.about-grid::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(10,10,10,0.6);
    z-index: 0;
}

.about-grid > * {
    position: relative;
    z-index: 1;
}

.about-image {
  position: relative;
}

.about-image img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  /* border: 1px solid var(--border); */
  filter: brightness(0.9);
}

.about-text h2 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--white);
  margin-bottom: 1rem;
}

.about-text p {
  font-size: 1rem;
  font-weight: 300;
  color: var(--text-muted);
  line-height: 1.8;
}

.about-buttons {
    display: flex;
    gap: 1rem;
    margin-top: 1.75rem;
    flex-wrap: wrap;
}

.btn-primary {
    padding: 0.75rem 1.4rem;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    border: 1px solid;
    text-decoration: none;
    transition: all 0.25s ease;
}

/* Kickstarter (green) */
.btn-kickstarter {
    color: #22c55e;
    border-color: #22c55e;
    background: rgba(34, 197, 94, 0.08);
}

.btn-kickstarter:hover {
    background: rgba(34, 197, 94, 0.2);
}

/* Steam (dark grey) */
.btn-steam {
    color: #cccccc;
    border-color: #444;
    background: rgba(255,255,255,0.05);
}

.btn-steam:hover {
    background: rgba(255,255,255,0.12);
}

.video-container {
  margin-top: 3.5rem;
  width: 100%;
  aspect-ratio: 16/9;
  background: var(--panel);
  border: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}

.video-container iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
}

/* =============================================
   WORLD SECTION
   ============================================= */
#world {
  background: var(--dark);
  max-width: 100%;
  padding: 6rem 2rem;
}

.world-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.world-grid {
    margin-top: 2.5rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.world-grid img {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
    background: var(--panel);
    border: 1px solid var(--border);
    filter: brightness(0.85) saturate(0.8);
    transition: filter 0.4s ease;
}

.world-grid img:hover {
    filter: brightness(1) saturate(1);
}

.world-caption {
  margin-top: 1.5rem;
  padding: 1.25rem 1.5rem;
  border-left: 2px solid var(--accent);
  background: rgba(139, 26, 26, 0.05);
}

/* =============================================
   CHARACTERS SECTION
   ============================================= */
#characters {
  padding: 6rem 2rem;
}

.characters-header {
  margin-bottom: 3rem;
}

.character-card {
  display: grid;
  grid-template-columns: 256px 1fr;
  gap: 2.5rem;
  align-items: start;
  padding: 2rem;
  border: 1px solid var(--border);
  background: var(--panel);
  margin-bottom: 1.5rem;
  position: relative;
  transition: border-color 0.3s ease;
}

.character-card:hover {
  border-color: var(--accent);
}

.character-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 0;
  background: var(--accent-bright);
  transition: height 0.4s ease;
}

.character-card:hover::before {
  height: 100%;
}

.character-image {
    aspect-ratio: 1/1;
    background: var(--border);
    overflow: hidden;
    position: relative;
    border-radius: 2px;
}

.character-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(20%);
  transition: filter 0.4s ease;
}

.character-card:hover .character-image img {
  filter: grayscale(0%);
}

.character-image .placeholder-img {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #1a1a1a 0%, #2a1a1a 100%);
  color: var(--border);
  font-size: 3rem;
}

.character-info {
  padding: 0.5rem 0;
}



.character-name {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.05em;
  margin-bottom: 0.35rem;
}

.character-role {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent-bright);
  margin-bottom: 1rem;
}

.character-info p {
  font-size: 0.95rem;
  font-weight: 300;
  color: var(--text-muted);
  line-height: 1.8;
}

.character-stats {
  display: flex;
  gap: 1.5rem;
  margin-top: 1.5rem;
  flex-wrap: wrap;
}

.stat {
  text-align: left;
}

.stat-label {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent-bright);
  display: block;
  margin-bottom: 0.2rem;
}

.stat-value {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text);
}

/* =============================================
   SOCIALS SECTION
   ============================================= */
#socials {
  background: var(--dark);
  max-width: 100%;
  padding: 6rem 2rem;
  border-top: 1px solid var(--border);
}

.socials-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.socials-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  margin-top: 3rem;
  align-items: start;
}

.socials-buttons-group h3,
.newsletter-group h3 {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

.social-buttons {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.btn-social {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.85rem 1.25rem;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: all 0.25s ease;
  text-decoration: none;
  width: 100%;
}

.btn-social:hover {
  border-color: var(--accent-bright);
  background: rgba(139, 26, 26, 0.1);
  color: var(--white);
}

.btn-social svg {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
}

/* Newsletter */
.newsletter-form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.newsletter-form input[type="email"] {
  width: 100%;
  padding: 0.85rem 1.25rem;
  background: var(--panel);
  border: 1px solid var(--border);
  color: var(--text);
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.2s;
}

.newsletter-form input[type="email"]:focus {
  border-color: var(--accent-bright);
}

.newsletter-form input[type="email"]::placeholder {
  color: var(--text-muted);
}

.btn-submit {
  padding: 0.85rem 1.5rem;
  background: var(--accent);
  border: 1px solid var(--accent-bright);
  color: var(--white);
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.25s ease;
}

.btn-submit:hover {
  background: var(--accent-glow);
}

.confirmation-msg {
  display: none;
  padding: 0.85rem 1.25rem;
  background: rgba(139, 26, 26, 0.15);
  border: 1px solid var(--accent);
  color: var(--accent-bright);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.05em;
}

.confirmation-msg.visible {
  display: block;
}

#kawaiiidles {
    display: flex;
    justify-content: center;
}

/* =============================================
   FOOTER
   ============================================= */
footer {
  text-align: center;
  padding: 2rem;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
}

/* =============================================
   RESPONSIVE — TABLET
   ============================================= */
@media (max-width: 900px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .about-image::after {
    display: none;
  }
    
    .character-card {
        display: grid;
        grid-template-columns: 280px 1fr 280px;
        gap: 2.5rem;
        align-items: stretch;
    }

    .character-image-right {
        height: 100%;
        overflow: hidden;
    }

    .character-image-right img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

  .socials-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
}

/* =============================================
   RESPONSIVE — MOBILE
   ============================================= */
@media (max-width: 600px) {
  :root {
    --nav-height: 56px;
  }

  #navbar {
    padding: 0 1.25rem;
  }

  .nav-links {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .mobile-menu {
    display: block;
  }

  section,
  #world,
  #socials {
    padding: 4rem 1.25rem;
  }

  .character-card {
    grid-template-columns: 1fr;
  }

  .character-image {
    max-width: 200px;
  }

  .character-stats {
    gap: 1rem;
  }

  .social-buttons {
    gap: 0.6rem;
  }

  .about-text h2 {
    font-size: 1.5rem;
  }
}