/* ========================================
   СОВЕРГОН — Landing Page Styles
   Grunge / Collage / Poster Aesthetic
   ======================================== */

/* --- CSS Custom Properties --- */
:root {
  --red-primary: #d42a2a;
  --red-dark: #8b1a1a;
  --red-hover: #b82222;
  --white: #f5f0e8;
  --black: #1a1a1a;
  --paper: #f0e6d3;
  --paper-dark: #e0d3be;
  --tape: #e8d78e;

  /* Social brand colors */
  --telegram: #2AABEE;
  --youtube: #FF0000;
  --twitch: #9146FF;
  --vk: #4C75A3;

  /* Spacing */
  --section-pad: clamp(3rem, 8vw, 6rem);
  --container-max: 900px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--red-primary);
  color: var(--black);
  overflow-x: hidden;
  min-height: 100vh;
  position: relative;
}

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

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

/* Focus visible for keyboard nav */
a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--tape);
  outline-offset: 2px;
}

/* --- Grain Overlay --- */
.grain-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.06;
  filter: url(#grain);
  width: 100%;
  height: 100%;
}

/* --- HERO SECTION --- */
.hero {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--red-primary);
  z-index: 2;
  will-change: transform;
  transform: translateZ(0);
}

.hero-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  max-width: 500px;
}


.hero-image {
  width: 100%;
  max-height: 80vh;
  max-height: 80dvh;
  object-fit: contain;
  border-radius: 2px;
}


/* Hero torn bottom edge */
.hero-torn-edge {
  position: absolute;
  bottom: -20px;
  left: 0;
  right: 0;
  height: 40px;
  background: var(--red-dark);
  z-index: 3;
  clip-path: polygon(
    0% 55%, 2% 35%, 5% 60%, 8% 30%, 11% 55%, 14% 40%,
    17% 65%, 20% 30%, 23% 50%, 26% 35%, 29% 60%, 32% 25%,
    35% 55%, 38% 40%, 41% 65%, 44% 30%, 47% 55%, 50% 35%,
    53% 60%, 56% 25%, 59% 50%, 62% 40%, 65% 65%, 68% 30%,
    71% 55%, 74% 35%, 77% 60%, 80% 30%, 83% 55%, 86% 40%,
    89% 60%, 92% 25%, 95% 55%, 98% 35%, 100% 50%,
    100% 100%, 0% 100%
  );
  will-change: transform;
  transform: translateZ(0);
}

/* --- CONCERTS SECTION --- */
.concerts {
  position: relative;
  background: var(--red-dark);
  padding: var(--section-pad) 1.5rem;
  padding-top: calc(var(--section-pad) + 20px);
  z-index: 2;
}

/* --- CUT-OUT HEADING --- */
.cutout-heading {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 4px;
  margin-bottom: clamp(2rem, 5vw, 3.5rem);
  line-height: 1;
}

.letter {
  display: inline-block;
  padding: 4px 8px;
  line-height: 1.1;
  font-weight: 700;
  user-select: none;
}

/* КОНЦЕРТЫ letters */
.l1  { font-family: 'Rubik Dirt', cursive;    color: #fff;          background: var(--black);   transform: rotate(-3deg); font-size: clamp(2rem, 6vw, 3.5rem); }
.l2  { font-family: 'Caveat', cursive;        color: var(--red-primary); background: var(--paper);  transform: rotate(2deg);  font-size: clamp(2.2rem, 7vw, 4rem); }
.l3  { font-family: 'Neucha', cursive;        color: var(--black);  background: var(--tape);    transform: rotate(-1deg); font-size: clamp(1.8rem, 5.5vw, 3rem); }
.l4  { font-family: 'Ruslan Display', cursive; color: #fff;         background: var(--red-primary); transform: rotate(2.5deg); font-size: clamp(2rem, 6vw, 3.5rem); }
.l5  { font-family: 'Caveat', cursive;        color: var(--red-dark); background: #fff;         transform: rotate(-2deg); font-size: clamp(2.4rem, 7vw, 4rem); }
.l6  { font-family: 'Rubik Dirt', cursive;    color: var(--paper);  background: var(--black);   transform: rotate(1deg);  font-size: clamp(2rem, 6vw, 3.5rem); }
.l7  { font-family: 'Neucha', cursive;        color: var(--black);  background: var(--white);   transform: rotate(-1.5deg); font-size: clamp(1.8rem, 5.5vw, 3rem); }
.l8  { font-family: 'Ruslan Display', cursive; color: var(--tape);  background: var(--red-primary); transform: rotate(3deg); font-size: clamp(2.2rem, 7vw, 3.8rem); }

/* ССЫЛКИ letters */
.l9  { font-family: 'Rubik Dirt', cursive;    color: var(--red-primary); background: var(--paper); transform: rotate(2deg);  font-size: clamp(2rem, 6vw, 3.5rem); }
.l10 { font-family: 'Neucha', cursive;        color: #fff;          background: var(--black);   transform: rotate(-2.5deg); font-size: clamp(2.2rem, 7vw, 3.8rem); }
.l11 { font-family: 'Caveat', cursive;        color: var(--black);  background: var(--tape);    transform: rotate(1deg);  font-size: clamp(2.4rem, 7vw, 4rem); }
.l12 { font-family: 'Ruslan Display', cursive; color: var(--paper); background: var(--red-dark); transform: rotate(-1deg); font-size: clamp(2rem, 6vw, 3.5rem); }
.l13 { font-family: 'Rubik Dirt', cursive;    color: #fff;          background: var(--black); transform: rotate(2.5deg); font-size: clamp(1.8rem, 5.5vw, 3rem); }
.l14 { font-family: 'Caveat', cursive;        color: var(--red-primary); background: #fff;      transform: rotate(-3deg); font-size: clamp(2.2rem, 7vw, 4rem); }

/* --- CONCERT CARDS --- */
.concerts-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  max-width: var(--container-max);
  margin: 0 auto;
}

.concert-card {
  position: relative;
  background: var(--paper);
  padding: 2rem 1.5rem 1.5rem;
  transform: rotate(var(--rotation, 0deg));
  filter: url(#torn);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  box-shadow:
    2px 3px 8px rgba(0, 0, 0, 0.3),
    inset 0 0 30px rgba(0, 0, 0, 0.03);
}

.concert-card:hover {
  transform: rotate(0deg) translateY(-4px);
  box-shadow:
    4px 6px 16px rgba(0, 0, 0, 0.4),
    inset 0 0 30px rgba(0, 0, 0, 0.03);
}

/* Tape on top of card */
.card-tape {
  position: absolute;
  top: -8px;
  left: 50%;
  transform: translateX(-50%) rotate(-2deg);
  width: 70px;
  height: 22px;
  background: var(--tape);
  opacity: 0.75;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15);
  z-index: 2;
}

.concert-date {
  font-family: 'Rubik Dirt', cursive;
  font-size: clamp(2.2rem, 6vw, 3rem);
  color: var(--red-primary);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.concert-city {
  font-family: 'Neucha', cursive;
  font-size: clamp(1.4rem, 4vw, 1.8rem);
  color: var(--black);
  margin-bottom: 0.25rem;
}

.concert-venue {
  font-family: 'Inter', sans-serif;
  font-size: 0.9rem;
  color: #666;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1.2rem;
}

.ticket-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.75rem 1.5rem;
  min-height: 48px;
  background: var(--red-primary);
  color: var(--white);
  border: none;
  cursor: pointer;
  transition: background 0.2s, transform 0.2s;
  transform: rotate(-1deg);
}

.ticket-btn:hover {
  background: var(--black);
  transform: rotate(0deg) scale(1.05);
}

.card-buttons {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.vk-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.75rem 1.2rem;
  min-height: 48px;
  background: var(--vk);
  color: #fff;
  border: none;
  cursor: pointer;
  transition: background 0.2s, transform 0.2s;
  transform: rotate(1deg);
}

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

.vk-btn:hover {
  background: var(--black);
  transform: rotate(0deg) scale(1.05);
}

/* --- SECTION DIVIDERS --- */
.section-divider {
  height: 30px;
  background: var(--red-primary);
  position: relative;
  z-index: 2;
  clip-path: polygon(
    0% 0%, 100% 0%,
    100% 60%, 97% 35%, 94% 65%, 91% 30%, 88% 55%,
    85% 40%, 82% 70%, 79% 25%, 76% 55%, 73% 35%,
    70% 60%, 67% 30%, 64% 55%, 61% 40%, 58% 65%,
    55% 25%, 52% 55%, 49% 35%, 46% 60%, 43% 30%,
    40% 55%, 37% 40%, 34% 70%, 31% 25%, 28% 55%,
    25% 35%, 22% 60%, 19% 30%, 16% 55%, 13% 40%,
    10% 65%, 7% 25%, 4% 55%, 1% 35%, 0% 50%
  );
}

.section-divider-2 {
  height: 35px;
  background: var(--red-dark);
  clip-path: polygon(
    0% 0%, 100% 0%,
    100% 55%, 98% 30%, 95% 60%, 92% 25%, 89% 50%,
    86% 35%, 83% 65%, 80% 30%, 77% 50%, 74% 40%,
    71% 70%, 68% 25%, 65% 55%, 62% 35%, 59% 60%,
    56% 30%, 53% 50%, 50% 40%, 47% 65%, 44% 25%,
    41% 55%, 38% 35%, 35% 60%, 32% 30%, 29% 55%,
    26% 40%, 23% 70%, 20% 25%, 17% 55%, 14% 35%,
    11% 60%, 8% 30%, 5% 50%, 2% 40%, 0% 55%
  );
}

/* --- SOCIALS SECTION --- */
.socials {
  position: relative;
  background: var(--red-primary);
  padding: var(--section-pad) 1.5rem;
  z-index: 2;
}

.socials-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  max-width: var(--container-max);
  margin: 0 auto;
}

.social-link {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 2rem 1rem;
  background: var(--paper);
  transform: rotate(var(--rotation, 0deg));
  filter: url(#torn);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  box-shadow: 2px 3px 8px rgba(0, 0, 0, 0.25);
  cursor: pointer;
  /* Minimum touch target */
  min-height: 120px;
}

.social-link:hover {
  transform: rotate(0deg) translateY(-5px);
  box-shadow: 4px 8px 20px rgba(0, 0, 0, 0.35);
}

.social-icon {
  width: 40px;
  height: 40px;
}

.social-name {
  font-family: 'Neucha', cursive;
  font-size: clamp(1rem, 3vw, 1.3rem);
  color: var(--black);
}

/* Social brand color accents on hover */
.social-telegram .social-icon { color: var(--telegram); }
.social-youtube .social-icon  { color: var(--youtube); }
.social-twitch .social-icon   { color: var(--twitch); }
.social-vk .social-icon       { color: var(--vk); }

/* --- FOOTER --- */
.footer {
  position: relative;
  background: var(--black);
  color: var(--white);
  padding: 2rem 1.5rem;
  z-index: 2;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  max-width: var(--container-max);
  margin: 0 auto;
}

.age-rating {
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  font-size: 1.2rem;
  padding: 0.3rem 0.6rem;
  border: 2px solid var(--white);
  opacity: 0.6;
}

.footer-socials {
  display: flex;
  gap: 1.2rem;
}

.footer-socials a {
  color: var(--white);
  opacity: 0.5;
  transition: opacity 0.2s;
  /* Touch target */
  min-width: 44px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.footer-socials a:hover {
  opacity: 1;
}

.footer-socials svg {
  width: 20px;
  height: 20px;
}

.copyright {
  font-size: 0.8rem;
  opacity: 0.4;
}

/* ========================================
   RESPONSIVE BREAKPOINTS
   ======================================== */

/* Tablet */
@media (min-width: 600px) {
  .concerts-grid {
    grid-template-columns: 1fr 1fr;
  }

  .socials-grid {
    gap: 2rem;
  }

  .hero-inner {
    max-width: 450px;
  }
}

/* Desktop */
@media (min-width: 900px) {
  .hero-inner {
    max-width: 480px;
  }

  .concerts-grid {
    gap: 2.5rem;
  }

  .concert-card {
    padding: 2.5rem 2rem 2rem;
  }

  .socials-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
  }

  .social-link {
    padding: 2.5rem 1.5rem;
  }

  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
  }
}

/* Large desktop */
@media (min-width: 1200px) {
  .hero-inner {
    max-width: 520px;
  }

  .concerts-grid {
    gap: 3rem;
  }
}

/* ========================================
   TOUCH DEVICES
   ======================================== */
@media (hover: none) {
  .concert-card:hover {
    transform: rotate(var(--rotation, 0deg));
    box-shadow:
      2px 3px 8px rgba(0, 0, 0, 0.3),
      inset 0 0 30px rgba(0, 0, 0, 0.03);
  }

  .concert-card:active {
    transform: rotate(var(--rotation, 0deg)) scale(0.98);
  }

  .social-link:hover {
    transform: rotate(var(--rotation, 0deg));
    box-shadow: 2px 3px 8px rgba(0, 0, 0, 0.25);
    border-bottom: none;
  }

  .social-link:active {
    transform: rotate(var(--rotation, 0deg)) scale(0.97);
  }

  .ticket-btn:hover {
    background: var(--red-primary);
    transform: rotate(-1deg);
  }

  .ticket-btn:active {
    background: var(--black);
    transform: rotate(0deg) scale(0.97);
  }

  .vk-btn:hover {
    background: var(--vk);
    transform: rotate(1deg);
  }

  .vk-btn:active {
    background: var(--black);
    transform: rotate(0deg) scale(0.97);
  }
}

/* ========================================
   REDUCED MOTION
   ======================================== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  html {
    scroll-behavior: auto;
  }

  .scroll-arrow {
    animation: none;
  }

  .concert-card,
  .social-link {
    opacity: 1 !important;
    transform: rotate(var(--rotation, 0deg)) !important;
  }
}