@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500;600&family=IBM+Plex+Sans:wght@300;400;500;600;700&display=swap');

/* Design DNA: Mosaic collage hero of stage/crowd/laptop tiles; electric cyan on near-black; high-energy tech hub mood */

:root {
  --iv-bg: #0B0F14;
  --iv-bg-elevated: #121820;
  --iv-bg-card: #161D27;
  --iv-cyan: #00D1FF;
  --iv-lime: #B8F200;
  --iv-white: #FFFFFF;
  --iv-muted: #8A9BB0;
  --iv-border: rgba(0, 209, 255, 0.18);
  --iv-font-sans: 'IBM Plex Sans', system-ui, sans-serif;
  --iv-font-mono: 'IBM Plex Mono', monospace;
  --iv-radius: 6px;
  --iv-radius-lg: 12px;
  --iv-shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
  --iv-transition: 0.25s ease;
  --iv-max: 1200px;
  --iv-header-h: 72px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--iv-font-sans);
  background: var(--iv-bg);
  color: var(--iv-white);
  line-height: 1.6;
  font-size: 16px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

a {
  color: var(--iv-cyan);
  text-decoration: none;
  transition: color var(--iv-transition);
}

a:hover {
  color: var(--iv-lime);
}

ul {
  list-style: none;
}

/* ── Header ── */

.iv-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11, 15, 20, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--iv-border);
  height: var(--iv-header-h);
}

.iv-header__inner {
  max-width: var(--iv-max);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.iv-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--iv-white);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}

.iv-logo:hover {
  color: var(--iv-white);
}

.iv-logo__mark {
  width: 36px;
  height: 36px;
  background: var(--iv-cyan);
  border-radius: var(--iv-radius);
  display: grid;
  place-items: center;
  font-family: var(--iv-font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--iv-bg);
  flex-shrink: 0;
}

.iv-logo__tag {
  font-family: var(--iv-font-mono);
  font-size: 0.65rem;
  color: var(--iv-cyan);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  display: block;
  margin-top: 1px;
}

.iv-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.iv-nav__link {
  font-family: var(--iv-font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--iv-muted);
  transition: color var(--iv-transition);
}

.iv-nav__link:hover,
.iv-nav__link--active {
  color: var(--iv-cyan);
}

.iv-burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.iv-burger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--iv-cyan);
  transition: var(--iv-transition);
}

/* ── Hero Mosaic ── */

.iv-hero {
  position: relative;
  min-height: 88vh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}

.iv-hero__mosaic {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 1fr;
  grid-template-rows: 1fr 1fr;
  gap: 4px;
}

.iv-hero__tile {
  overflow: hidden;
  position: relative;
}

.iv-hero__tile img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 8s ease;
}

.iv-hero__tile:hover img {
  transform: scale(1.05);
}

.iv-hero__tile--1 { grid-column: 1; grid-row: 1 / 3; }
.iv-hero__tile--2 { grid-column: 2; grid-row: 1; }
.iv-hero__tile--3 { grid-column: 3; grid-row: 1; }
.iv-hero__tile--4 { grid-column: 2 / 4; grid-row: 2; }

.iv-hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(11, 15, 20, 0.95) 0%,
    rgba(11, 15, 20, 0.55) 45%,
    rgba(11, 15, 20, 0.25) 100%
  );
  z-index: 1;
}

.iv-hero__content {
  position: relative;
  z-index: 2;
  max-width: var(--iv-max);
  margin: 0 auto;
  padding: 80px 24px 64px;
  width: 100%;
}

.iv-hero__eyebrow {
  font-family: var(--iv-font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--iv-cyan);
  margin-bottom: 16px;
}

.iv-hero__title {
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.03em;
  max-width: 720px;
  margin-bottom: 20px;
}

.iv-hero__title span {
  color: var(--iv-cyan);
}

.iv-hero__desc {
  font-size: 1.1rem;
  color: var(--iv-muted);
  max-width: 520px;
  margin-bottom: 36px;
}

.iv-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* ── Buttons ── */

.iv-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  font-family: var(--iv-font-mono);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-radius: var(--iv-radius);
  border: none;
  cursor: pointer;
  transition: all var(--iv-transition);
  text-decoration: none;
}

.iv-btn--primary {
  background: var(--iv-cyan);
  color: var(--iv-bg);
}

.iv-btn--primary:hover {
  background: var(--iv-lime);
  color: var(--iv-bg);
}

.iv-btn--outline {
  background: transparent;
  color: var(--iv-white);
  border: 1px solid var(--iv-border);
}

.iv-btn--outline:hover {
  border-color: var(--iv-cyan);
  color: var(--iv-cyan);
}

/* ── Sections ── */

.iv-main {
  flex: 1;
}

.iv-section {
  padding: 80px 24px;
}

.iv-section--alt {
  background: var(--iv-bg-elevated);
}

.iv-container {
  max-width: var(--iv-max);
  margin: 0 auto;
}

.iv-section__header {
  margin-bottom: 48px;
}

.iv-section__eyebrow {
  font-family: var(--iv-font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--iv-cyan);
  margin-bottom: 10px;
}

.iv-section__title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.iv-section__desc {
  color: var(--iv-muted);
  margin-top: 12px;
  max-width: 560px;
  font-size: 1.05rem;
}

/* ── Stats ── */

.iv-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.iv-stat {
  background: var(--iv-bg-card);
  border: 1px solid var(--iv-border);
  border-radius: var(--iv-radius-lg);
  padding: 28px 24px;
  text-align: center;
}

.iv-stat__num {
  font-family: var(--iv-font-mono);
  font-size: 2.4rem;
  font-weight: 600;
  color: var(--iv-cyan);
  line-height: 1;
  margin-bottom: 8px;
}

.iv-stat__label {
  font-size: 0.85rem;
  color: var(--iv-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* ── Cards Grid ── */

.iv-grid {
  display: grid;
  gap: 28px;
}

.iv-grid--3 {
  grid-template-columns: repeat(3, 1fr);
}

.iv-grid--2 {
  grid-template-columns: repeat(2, 1fr);
}

.iv-card {
  background: var(--iv-bg-card);
  border: 1px solid var(--iv-border);
  border-radius: var(--iv-radius-lg);
  overflow: hidden;
  transition: border-color var(--iv-transition), transform var(--iv-transition);
}

.iv-card:hover {
  border-color: rgba(0, 209, 255, 0.45);
  transform: translateY(-3px);
}

.iv-card__img {
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.iv-card__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.iv-card__body {
  padding: 24px;
}

.iv-card__tag {
  font-family: var(--iv-font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--iv-lime);
  margin-bottom: 8px;
}

.iv-card__title {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.iv-card__text {
  color: var(--iv-muted);
  font-size: 0.92rem;
  margin-bottom: 16px;
}

.iv-card__meta {
  font-family: var(--iv-font-mono);
  font-size: 0.75rem;
  color: var(--iv-cyan);
}

/* ── Feature Row ── */

.iv-feature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.iv-feature__img {
  border-radius: var(--iv-radius-lg);
  overflow: hidden;
  border: 1px solid var(--iv-border);
}

.iv-feature__list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 24px;
}

.iv-feature__item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.iv-feature__icon {
  font-family: var(--iv-font-mono);
  font-size: 0.75rem;
  color: var(--iv-bg);
  background: var(--iv-cyan);
  width: 28px;
  height: 28px;
  border-radius: var(--iv-radius);
  display: grid;
  place-items: center;
  flex-shrink: 0;
  margin-top: 2px;
}

.iv-feature__item strong {
  display: block;
  margin-bottom: 2px;
}

.iv-feature__item span {
  color: var(--iv-muted);
  font-size: 0.9rem;
}

/* ── CTA Banner ── */

.iv-cta {
  position: relative;
  border-radius: var(--iv-radius-lg);
  overflow: hidden;
  min-height: 320px;
  display: flex;
  align-items: center;
}

.iv-cta__bg {
  position: absolute;
  inset: 0;
}

.iv-cta__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.iv-cta__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(11, 15, 20, 0.92) 40%, rgba(11, 15, 20, 0.5) 100%);
}

.iv-cta__content {
  position: relative;
  z-index: 1;
  padding: 48px;
  max-width: 520px;
}

.iv-cta__title {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.iv-cta__text {
  color: var(--iv-muted);
  margin-bottom: 24px;
}

/* ── Page Hero (inner pages) ── */

.iv-page-hero {
  padding: 64px 24px 48px;
  background: var(--iv-bg-elevated);
  border-bottom: 1px solid var(--iv-border);
}

.iv-page-hero__inner {
  max-width: var(--iv-max);
  margin: 0 auto;
}

.iv-page-hero__title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.iv-page-hero__desc {
  color: var(--iv-muted);
  font-size: 1.05rem;
  max-width: 600px;
}

/* ── Events Timeline ── */

.iv-events {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.iv-event {
  display: grid;
  grid-template-columns: 120px 1fr auto;
  gap: 28px;
  align-items: center;
  background: var(--iv-bg-card);
  border: 1px solid var(--iv-border);
  border-radius: var(--iv-radius-lg);
  padding: 24px 28px;
  transition: border-color var(--iv-transition);
}

.iv-event:hover {
  border-color: rgba(0, 209, 255, 0.4);
}

.iv-event--past {
  opacity: 0.65;
}

.iv-event__date {
  text-align: center;
}

.iv-event__day {
  font-family: var(--iv-font-mono);
  font-size: 2rem;
  font-weight: 600;
  color: var(--iv-cyan);
  line-height: 1;
}

.iv-event__month {
  font-family: var(--iv-font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--iv-muted);
  margin-top: 4px;
}

.iv-event__title {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.iv-event__desc {
  color: var(--iv-muted);
  font-size: 0.9rem;
}

.iv-event__badge {
  font-family: var(--iv-font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 6px 14px;
  border-radius: 100px;
  white-space: nowrap;
}

.iv-event__badge--upcoming {
  background: rgba(0, 209, 255, 0.12);
  color: var(--iv-cyan);
  border: 1px solid var(--iv-border);
}

.iv-event__badge--past {
  background: rgba(138, 155, 176, 0.1);
  color: var(--iv-muted);
  border: 1px solid rgba(138, 155, 176, 0.2);
}

/* ── Venue Detail ── */

.iv-venue-specs {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 16px;
}

.iv-venue-spec {
  font-family: var(--iv-font-mono);
  font-size: 0.72rem;
  padding: 6px 12px;
  background: rgba(0, 209, 255, 0.08);
  border: 1px solid var(--iv-border);
  border-radius: var(--iv-radius);
  color: var(--iv-cyan);
}

/* ── Contact Form ── */

.iv-contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
}

.iv-contact-info {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.iv-contact-item__label {
  font-family: var(--iv-font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--iv-cyan);
  margin-bottom: 6px;
}

.iv-contact-item__value {
  font-size: 1.05rem;
}

.iv-contact-item__value a {
  color: var(--iv-white);
}

.iv-contact-item__value a:hover {
  color: var(--iv-cyan);
}

.iv-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.iv-form__group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.iv-form__label {
  font-family: var(--iv-font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--iv-muted);
}

.iv-form__input,
.iv-form__textarea,
.iv-form__select {
  background: var(--iv-bg);
  border: 1px solid var(--iv-border);
  border-radius: var(--iv-radius);
  padding: 12px 16px;
  color: var(--iv-white);
  font-family: var(--iv-font-sans);
  font-size: 0.95rem;
  transition: border-color var(--iv-transition);
}

.iv-form__input:focus,
.iv-form__textarea:focus,
.iv-form__select:focus {
  outline: none;
  border-color: var(--iv-cyan);
}

.iv-form__textarea {
  min-height: 140px;
  resize: vertical;
}

.iv-form__select option {
  background: var(--iv-bg);
}

/* ── Privacy ── */

.iv-legal {
  max-width: 760px;
}

.iv-legal h2 {
  font-size: 1.3rem;
  font-weight: 600;
  margin: 36px 0 12px;
  color: var(--iv-white);
}

.iv-legal h2:first-child {
  margin-top: 0;
}

.iv-legal p,
.iv-legal li {
  color: var(--iv-muted);
  font-size: 0.95rem;
  margin-bottom: 12px;
}

.iv-legal ul {
  list-style: disc;
  padding-left: 24px;
  margin-bottom: 16px;
}

.iv-legal li {
  margin-bottom: 6px;
}

/* ── Footer ── */

.iv-footer {
  background: var(--iv-bg-elevated);
  border-top: 1px solid var(--iv-border);
  padding: 64px 24px 32px;
  margin-top: auto;
}

.iv-footer__grid {
  max-width: var(--iv-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}

.iv-footer__brand p {
  color: var(--iv-muted);
  font-size: 0.9rem;
  margin-top: 12px;
  line-height: 1.7;
}

.iv-footer__heading {
  font-family: var(--iv-font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--iv-cyan);
  margin-bottom: 16px;
}

.iv-footer__links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.iv-footer__links a {
  color: var(--iv-muted);
  font-size: 0.9rem;
}

.iv-footer__links a:hover {
  color: var(--iv-cyan);
}

.iv-footer__bottom {
  max-width: var(--iv-max);
  margin: 0 auto;
  padding-top: 28px;
  border-top: 1px solid var(--iv-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.iv-footer__copy {
  font-family: var(--iv-font-mono);
  font-size: 0.75rem;
  color: var(--iv-muted);
}

.iv-footer__legal a {
  font-size: 0.8rem;
  color: var(--iv-muted);
}

/* ── Cookie Banner ── */

.iv-cookie {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 200;
  max-width: 380px;
  background: var(--iv-bg-card);
  border: 1px solid var(--iv-border);
  border-radius: var(--iv-radius-lg);
  padding: 24px;
  box-shadow: var(--iv-shadow);
  display: none;
}

.iv-cookie--visible {
  display: block;
}

.iv-cookie__title {
  font-family: var(--iv-font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--iv-cyan);
  margin-bottom: 10px;
}

.iv-cookie__text {
  font-size: 0.85rem;
  color: var(--iv-muted);
  margin-bottom: 18px;
  line-height: 1.55;
}

.iv-cookie__actions {
  display: flex;
  gap: 10px;
}

.iv-cookie__btn {
  flex: 1;
  padding: 10px 16px;
  font-family: var(--iv-font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-radius: var(--iv-radius);
  border: none;
  cursor: pointer;
  transition: all var(--iv-transition);
}

.iv-cookie__btn--accept {
  background: var(--iv-cyan);
  color: var(--iv-bg);
}

.iv-cookie__btn--accept:hover {
  background: var(--iv-lime);
}

.iv-cookie__btn--decline {
  background: transparent;
  color: var(--iv-muted);
  border: 1px solid var(--iv-border);
}

.iv-cookie__btn--decline:hover {
  color: var(--iv-white);
  border-color: var(--iv-muted);
}

/* ── Responsive: 900px ── */

@media (max-width: 900px) {
  .iv-nav {
    position: fixed;
    top: var(--iv-header-h);
    left: 0;
    right: 0;
    background: rgba(11, 15, 20, 0.97);
    flex-direction: column;
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid var(--iv-border);
    transform: translateY(-120%);
    opacity: 0;
    transition: transform var(--iv-transition), opacity var(--iv-transition);
    pointer-events: none;
  }

  .iv-nav--open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .iv-burger {
    display: flex;
  }

  .iv-hero__mosaic {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr 1fr;
  }

  .iv-hero__tile--1 { grid-column: 1 / 3; grid-row: 1; }
  .iv-hero__tile--2 { grid-column: 1; grid-row: 2; }
  .iv-hero__tile--3 { grid-column: 2; grid-row: 2; }
  .iv-hero__tile--4 { grid-column: 1 / 3; grid-row: 3; }

  .iv-stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .iv-grid--3 {
    grid-template-columns: 1fr;
  }

  .iv-grid--2 {
    grid-template-columns: 1fr;
  }

  .iv-feature {
    grid-template-columns: 1fr;
  }

  .iv-feature--reverse .iv-feature__img {
    order: -1;
  }

  .iv-contact-grid {
    grid-template-columns: 1fr;
  }

  .iv-footer__grid {
    grid-template-columns: 1fr 1fr;
  }

  .iv-event {
    grid-template-columns: 80px 1fr;
  }

  .iv-event__badge {
    grid-column: 2;
    justify-self: start;
  }
}

/* ── Responsive: 560px ── */

@media (max-width: 560px) {
  .iv-section {
    padding: 56px 16px;
  }

  .iv-header__inner {
    padding: 0 16px;
  }

  .iv-hero__content {
    padding: 60px 16px 48px;
  }

  .iv-hero {
    min-height: 75vh;
  }

  .iv-stats {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .iv-stat {
    padding: 20px 16px;
  }

  .iv-stat__num {
    font-size: 1.8rem;
  }

  .iv-cta__content {
    padding: 32px 24px;
  }

  .iv-footer__grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .iv-footer__bottom {
    flex-direction: column;
    text-align: center;
  }

  .iv-cookie {
    left: 16px;
    right: 16px;
    bottom: 16px;
    max-width: none;
  }

  .iv-event {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .iv-event__date {
    text-align: left;
    display: flex;
    align-items: baseline;
    gap: 8px;
  }

  .iv-page-hero {
    padding: 48px 16px 36px;
  }
}