/* General styling for The Rev pitch deck */

.blinking {
    animation: blink 1s linear infinite;
}

@keyframes blink {
    50% {
        opacity: 0;
    }
}

.spinner {
    width: 60px;
    height: 60px;
    border: 8px solid #ccc;
    border-top: 8px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 20px auto;
}

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

/* CSS Variables */
:root {
  --background: #0b0b0b;
  --overlay: rgba(0, 0, 0, 0.6);
  --text: #f0f0f0;
  --accent: #EBC58E;
  --card-bg: #1a1a1a;
}

/* Reset and base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: Arial, Helvetica, sans-serif;
  background-color: var(--background);
  color: var(--text);
  line-height: 1.5;
  scroll-behavior: smooth;
}

.deck {
  scroll-snap-type: y mandatory;
}

section.slide {
  min-height: 100vh;
  width: 100%;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4rem 2rem;
  scroll-snap-align: start;
}

/* Cover slide overlay */
.slide-cover .overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  /* Remove overlay for the cover slide so the image remains prominent */
  background: transparent;
  z-index: 1;
}

.slide-cover .slide-content {

  width: 50vw;
  height: auto; 
  left:  100;
  /* position: relative; */
  /* z-index: 2; */
}

.slide-content {
  max-width: 960px;
  width: 100%;
}

/* Typography */
.title {
  font-size: 4rem;
  font-weight: bold;
  color: var(--accent);
  margin-bottom: 0.5rem;
  text-align: center;
}

.subtitle {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  text-align: center;
  font-style: italic;
}

.section-title {
  font-size: 2.5rem;
  color: var(--accent);
  margin-bottom: 1rem;
  text-align: left;
}

.subheading {
  font-size: 1.25rem;
  color: #cccccc;
  margin-bottom: 1rem;
}

.body-text {
  font-size: 1rem;
  margin-bottom: 1rem;
}

.quote {
  font-style: italic;
  margin: 1rem 0;
  padding-left: 1rem;
  border-left: 3px solid var(--accent);
}

.quote-author {
  font-style: normal;
  font-size: 0.875rem;
  color: #aaaaaa;
}

.list {
  list-style: none;
  margin: 1rem 0;
}

.list li {
  margin-bottom: 0.5rem;
  position: relative;
  padding-left: 1.2rem;
}

.list li::before {
  content: '\2022';
  color: var(--accent);
  position: absolute;
  left: 0;
  top: 0;
}

/* Columns utility */
.columns {
  column-count: 2;
  column-gap: 2rem;
}

.two-columns {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
}

.two-columns .column {
  flex: 1 1 45%;
}

.comparables {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  font-size: 0.9rem;
}

.comparables th,
.comparables td {
  padding: 0.75rem;
  border: 1px solid #333333;
}

.comparables th {
  background-color: #262626;
  color: var(--accent);
  text-align: left;
  font-weight: bold;
}

.comparables td {
  background-color: #1a1a1a;
}

.note {
  font-size: 0.85rem;
  color: #888888;
  margin-top: 1rem;
  font-style: italic;
}

.investor-line {
  margin-top: 1.5rem;
  font-size: 1rem;
  color: #cccccc;
  font-style: italic;
}

/* Team styles */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.team-card {
  background-color: var(--card-bg);
  padding: 1.5rem;
  border-radius: 8px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.team-photo {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 0.75rem;
}

.team-name {
  font-size: 1.1rem;
  font-weight: bold;
  color: var(--accent);
  margin-bottom: 0.25rem;
}

.team-role {
  font-size: 0.9rem;
  color: #aaaaaa;
  margin-bottom: 0.5rem;
}

.team-bio {
  font-size: 0.85rem;
  color: #cccccc;
}

/* Navigation arrow */
.next-arrow {
  display: inline-block;
  margin-top: 2rem;
  color: var(--accent);
  transition: transform 0.2s;
}

.next-arrow:hover {
  transform: translateY(4px);
}

/* Alternate slide backgrounds */
section.slide:not(.slide-cover):nth-of-type(odd) {
  background-color: #0b0b0b;
}

section.slide:not(.slide-cover):nth-of-type(even) {
  background-color: #131313;
}

/* Modal styles */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  z-index: 1000;
}
.modal.show {
  display: flex;
}
.modal-content {
  background-color: var(--card-bg);
  color: var(--text);
  padding: 2rem;
  border-radius: 8px;
  max-width: 600px;
  width: 100%;
  position: relative;
}
.modal-content h3 {
  margin-bottom: 0.5rem;
  color: var(--accent);
}
.close-btn {
  position: absolute;
  top: 0.5rem;
  right: 0.75rem;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--accent);
}
.modal-role,
.modal-bio {
  margin-top: 0.5rem;
}

/* Footer */
.site-footer {
  text-align: center;
  padding: 1rem;
  font-size: 0.8rem;
  color: #666666;
  background-color: #0b0b0b;
}

/* Print styles */
@media print {
  @page {
    size: landscape;
    margin: 0;
  }
  body {
    color: #000;
    background-color: #fff;
  }
  section.slide {
    break-after: page;
    page-break-after: always;
    height: 100vh;
    min-height: 100vh;
  }
  .next-arrow, .site-footer {
    display: none;
  }
  .slide-cover {
    background-size: cover;
  }
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .title {
    font-size: 2.5rem;
  }
  .section-title {
    font-size: 1.75rem;
  }
  .subheading {
    font-size: 1rem;
  }
  .slide-content {
    padding: 1rem;
  }
  .columns {
    column-count: 1;
  }
  .two-columns {
    flex-direction: column;
  }
  .comparables th, .comparables td {
    font-size: 0.8rem;
  }
}

.slide-index-brand {
  padding: 0.25rem 0.35rem 0.75rem;
  margin-bottom: 0.45rem;
  border-bottom: 1px solid rgba(235, 197, 142, 0.25);
}

.slide-index-brand span {
  display: block;
  color: var(--accent);
  font-size: 0.72rem;
  letter-spacing: 0.24em;
  font-weight: 700;
}

.slide-index-brand strong {
  display: block;
  color: #ffffff;
  font-size: 0.92rem;
  letter-spacing: 0.03em;
  margin-top: 0.15rem;
}

.slide-index-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.slide-index-list li {
  margin: 0;
}

.slide-index-list a {
  display: grid;
  grid-template-columns: 2.35rem 1fr;
  gap: 0.55rem;
  align-items: center;
  padding: 0.42rem 0.45rem;
  color: rgba(255, 255, 255, 0.82);
  text-decoration: none;
  border-radius: 0.42rem;
  transition: background-color 160ms ease, color 160ms ease, transform 160ms ease;
}

.slide-index-list a:hover,
.slide-index-list a:focus-visible,
.slide-index-list a.is-active {
  background: rgba(235, 197, 142, 0.12);
  color: #ffffff;
  transform: translateX(2px);
  outline: none;
}

.slide-index-list a.is-active {
  box-shadow: inset 2px 0 0 var(--accent);
}

.slide-index-number {
  color: var(--accent);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  font-weight: 700;
}

.slide-index-title {
  font-size: 0.82rem;
  line-height: 1.18;
}

@media (min-width: 1100px) {
  section.slide:not(.slide-cover) {
    padding-left: 20rem;
    padding-right: 3rem;
  }
}

/* Crystal-clear cover slide — the key art is displayed as an image, not a faded background */
.slide-cover {
  padding: 0;
  background: #000;
  overflow: hidden;
}

.slide-cover .cover-art {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  /* width: 100vw;
  height: auto; */
  object-fit: cover;
  object-position: center center;
  opacity: 1;
  filter: none;
  transform: translateZ(0);
}

/* .cover-art {
    width: 100vw;
    height: auto;
} */

.slide-cover .cover-next {
  position: absolute;
  left: 50%;
  bottom: 1rem;
  transform: translateX(-50%);
  z-index: 3;
  width: 3rem;
  height: 3rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  color: var(--accent);
  background: rgba(0, 0, 0, 0.42);
  border: 1px solid rgba(235, 197, 142, 0.45);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.slide-cover .cover-next:hover {
  transform: translateX(-50%) translateY(4px);
}

@media (max-width: 1099px) {
  .slide-index-brand {
    border-bottom: 0;
    margin-bottom: 0;
    padding: 0;
    white-space: nowrap;
  }

  .slide-index-brand strong {
    display: none;
  }

  .slide-index-list {
    display: flex;
    gap: 0.35rem;
    overflow-x: auto;
    padding-bottom: 0.1rem;
    scrollbar-width: thin;
  }

  .slide-index-list a {
    grid-template-columns: auto;
    min-width: max-content;
    padding: 0.35rem 0.55rem;
    border: 1px solid rgba(235, 197, 142, 0.18);
  }

  .slide-index-title {
    display: none;
  }

  section.slide {
    padding-top: 4.5rem;
  }

  .slide-cover {
    padding: 0;
  }
}

@media print {

}

/* 2026-06 update: compact persistent index, placeholder slide backgrounds, clearer cover image */
section.slide {
  overflow: hidden;
  isolation: isolate;
}

section.slide:not(.slide-cover)::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image:
    linear-gradient(115deg, rgba(5, 5, 5, 0.90), rgba(10, 10, 10, 0.72) 48%, rgba(5, 5, 5, 0.90)),
    url('../images/cover.png');
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
  opacity: 0.55;
  transform: scale(1.02);
}

section.slide:not(.slide-cover):nth-of-type(even)::before {
  background-image:
    linear-gradient(115deg, rgba(8, 8, 8, 0.92), rgba(36, 24, 13, 0.67) 52%, rgba(5, 5, 5, 0.92)),
    url('../images/cover.png');
  background-position: center right;
}

section.slide:not(.slide-cover):nth-of-type(odd)::before {
  background-image:
    linear-gradient(115deg, rgba(5, 5, 5, 0.92), rgba(10, 20, 24, 0.68) 52%, rgba(5, 5, 5, 0.92)),
    url('../images/cover.png');
  background-position: center left;
}

section.slide > .slide-content,
section.slide > .next-arrow,
section.slide > table,
section.slide > h1,
section.slide > h2,
section.slide > h3,
section.slide > p,
section.slide > ul,
section.slide > div:not(.overlay) {
  position: relative;
  z-index: 1;
}

section.slide:not(.slide-cover) .slide-content {
  padding: clamp(1.15rem, 2.2vw, 2.4rem);
  border: 1px solid rgba(235, 197, 142, 0.23);
  border-radius: 1rem;
  background:
    linear-gradient(145deg, rgba(8, 8, 8, 0.86), rgba(18, 18, 18, 0.73));
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.48);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
}

/* Keep the cover image sharp and unfaded. */
.slide-cover .cover-art {
  object-fit: contain;
  object-position: center center;
  opacity: 1 !important;
  filter: none !important;
  background: #000;
}



.slide-index-toggle {
  width: 100%;
  min-height: 2.8rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  border: 1px solid rgba(235, 197, 142, 0.35);
  border-radius: 0.55rem;
  color: var(--accent);
  background: rgba(0, 0, 0, 0.28);
  cursor: pointer;
  font: inherit;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.toggle-bars {
  width: 1.15rem;
  display: grid;
  gap: 0.22rem;
}

.toggle-bars span {
  display: block;
  height: 2px;
  border-radius: 99px;
  background: currentColor;
}

.toggle-text {
  display: none;
  white-space: nowrap;
  color: #fff;
  font-size: 0.78rem;
}


.slide-index-brand {
  overflow: hidden;
  padding: 0.55rem 0.25rem 0.45rem;
  text-align: center;
}

.slide-index-brand span {
  letter-spacing: 0.12em;
  font-size: 0.62rem;
}

.slide-index-brand strong {
  display: none;
  /* white-space: nowrap; */
}

.slide-index-list a {
  grid-template-columns: 2.4rem 1fr;
  padding: 0.38rem 0.4rem;
}

.slide-index-title {
  display: none;
}


.slide-index-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.3rem;
  min-height: 1.8rem;
  border: 1px solid rgba(235, 197, 142, 0.22);
  border-radius: 0.4rem;
  background: rgba(0, 0, 0, 0.22);
}

@media (min-width: 1100px) {
  section.slide:not(.slide-cover) {
    padding-left: 6.2rem;
    padding-right: 3rem;
  }
}

@media (max-width: 1099px) {
  .slide-index-toggle {
    width: 3.25rem;
    min-width: 3.25rem;
    min-height: 2.45rem;
  }

  .toggle-text,
  .slide-index-brand strong,
  .slide-index-title {
    display: none !important;
  }

  .slide-index-brand {
    padding: 0 0.25rem;
    min-width: max-content;
    border-bottom: 0;
  }

  .slide-index-list {
    display: flex;
    gap: 0.35rem;
    overflow-x: auto;
    overflow-y: hidden;
    padding-bottom: 0.1rem;
  }

  .slide-index-list a {
    grid-template-columns: auto;
    padding: 0.28rem;
    min-width: max-content;
  }

  .slide-index-number {
    min-width: 2.05rem;
    min-height: 1.9rem;
  }

  section.slide {
    padding-top: 4.6rem;
  }

  .slide-cover {
    padding: 0;
  }
}

@media print {
  section.slide:not(.slide-cover)::before {
    opacity: 0.18;
  }
}

/* 2026-06 slide 28 team refinements: four-across desktop grid and full modal bios */
#slide28 .team-slide-content {
  max-width: 1220px;
}

#slide28 .team-grid-four {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.1rem;
}

#slide28 .team-card {
  min-width: 0;
  padding: 1.15rem 1rem;
  transition: transform 160ms ease, border-color 160ms ease, background-color 160ms ease;
  border: 1px solid rgba(235, 197, 142, 0.12);
}

#slide28 .team-card:hover,
#slide28 .team-card:focus-visible {
  transform: translateY(-3px);
  border-color: rgba(235, 197, 142, 0.55);
  background-color: rgba(35, 35, 35, 0.92);
  outline: none;
}

#slide28 .team-photo {
  width: clamp(70px, 7vw, 104px);
  height: clamp(70px, 7vw, 104px);
}

#slide28 .team-name {
  font-size: clamp(0.95rem, 1vw, 1.1rem);
}

#slide28 .team-role {
  min-height: 2.4em;
  font-size: clamp(0.72rem, 0.85vw, 0.88rem);
}

#slide28 .team-bio {
  font-size: clamp(0.72rem, 0.82vw, 0.85rem);
}

.team-hint {
  margin-top: 0.95rem;
  color: rgba(255, 255, 255, 0.68);
  font-size: 0.86rem;
  font-style: italic;
}

.modal-content {
  max-width: min(760px, 92vw);
  max-height: 84vh;
  overflow-y: auto;
  border: 1px solid rgba(235, 197, 142, 0.28);
  box-shadow: 0 28px 90px rgba(0, 0, 0, 0.65);
}

.modal-bio p {
  margin: 0.8rem 0 0;
}

.modal-bio a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(235, 197, 142, 0.5);
}

.modal-bio a:hover,
.modal-bio a:focus-visible {
  border-bottom-color: var(--accent);
}


.slide-index-toggle {
  min-height: 2.35rem;
  padding: 0.2rem;
}

.slide-index-brand {
  padding: 0.38rem 0.12rem 0.32rem;
}

.slide-index-list a {
  grid-template-columns: 2.1rem 1fr;
  gap: 0.45rem;
  padding: 0.3rem 0.28rem;
}

.slide-index-number {
  min-width: 1.95rem;
  min-height: 1.62rem;
  font-size: 0.66rem;
}

@media (min-width: 1100px) {
  section.slide:not(.slide-cover) {
    padding-left: 4.85rem;
  }
}

@media (max-width: 960px) {
  #slide28 .team-grid-four {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 560px) {
  #slide28 .team-grid-four {
    grid-template-columns: 1fr;
  }
}

/* Modal sits above compact index rail. */
.modal { z-index: 2000; }

/* =========================================================
   THE REV — MASTER BACKGROUND ASSIGNMENTS
   All image files are inside /images/
   ========================================================= */

/* Force all non-cover slides to use the slide-specific background system.
   This overrides earlier odd/even background-image rules. */
section.slide:not(.slide-cover)::before,
section.slide:not(.slide-cover):nth-of-type(even)::before,
section.slide:not(.slide-cover):nth-of-type(odd)::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;

  background-image:
    var(
      --slide-gradient,
      linear-gradient(
        115deg,
        rgba(5, 5, 5, 0.90),
        rgba(10, 10, 10, 0.72) 48%,
        rgba(5, 5, 5, 0.90)
      )
    ),
    var(--slide-bg, url('../images/CoverB.png'));

  background-size:
    cover,
    cover;

  background-position:
    center center,
    var(--slide-bg-position, center center);

  background-repeat:
    no-repeat,
    no-repeat;

  opacity: var(--slide-bg-opacity, 0.58);
  transform: scale(1.02);
}

/* Keep readable dark overlay. Adjust globally here if needed. */
section.slide:not(.slide-cover) {
  --slide-bg-opacity: 0.58;
}

/* Optional: slightly different tonal overlays for rhythm.
   These affect color only, not the image assignment. */
section.slide:not(.slide-cover):nth-of-type(even) {
  --slide-gradient:
    linear-gradient(
      115deg,
      rgba(8, 8, 8, 0.91),
      rgba(36, 24, 13, 0.68) 52%,
      rgba(5, 5, 5, 0.92)
    );
}

section.slide:not(.slide-cover):nth-of-type(odd) {
  --slide-gradient:
    linear-gradient(
      115deg,
      rgba(5, 5, 5, 0.92),
      rgba(10, 20, 24, 0.68) 52%,
      rgba(5, 5, 5, 0.92)
    );
}

/* ===============================
   FINAL FIX: INDEX RAIL OVERRIDE
   (safe - no deletions required)
================================= */


/* expand behavior */


/* hide titles when collapsed */
.slide-index-title {
  display: none !important;
}


/* =========================================================
   FINAL SLIDE INDEX RAIL (CLEAN OVERRIDE - SINGLE SOURCE OF TRUTH)
   ========================================================= */

.nav-desktop.slide-index-rail {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;

  width: 4.6rem;              /* collapsed state */
  max-height: calc(100vh - 1.5rem);

  padding: 0.45rem;
  overflow-y: auto;
  overflow-x: hidden;

  z-index: 9999;

  border-radius: 0.85rem;

  border: 1px solid rgba(235, 197, 142, 0.35);

  background:
    radial-gradient(circle at 0 0, rgba(235, 197, 142, 0.16), transparent 40%),
    linear-gradient(145deg, rgba(15,15,15,0.92), rgba(5,5,5,0.88));

  box-shadow: 0 18px 55px rgba(0,0,0,0.5);

  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);

  transition: width 180ms ease;
}

/* EXPANDED STATE */
.nav-desktop.slide-index-rail:hover,
.nav-desktop.slide-index-rail:focus-within,
.nav-desktop.slide-index-rail.is-open {
  width: 5rem;
}

/* BRAND AREA */
.slide-index-brand {
  padding: 0.5rem 0.25rem;
  text-align: center;
  border-bottom: 1px solid rgba(235, 197, 142, 0.25);
}

.slide-index-brand span {
  display: block;
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  color: var(--accent);
}

.slide-index-brand strong {
  display: none;
  color: white;
  font-size: 0.9rem;
}

.nav-desktop.slide-index-rail:hover .slide-index-brand strong,
.nav-desktop.slide-index-rail:focus-within .slide-index-brand strong,
.nav-desktop.slide-index-rail.is-open .slide-index-brand strong {
  display: block;
}

/* LIST */
.slide-index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  
  padding-bottom: 50px;
}

.slide-index-list a {
  display: grid;
  grid-template-columns: 2.2rem 1fr;
  gap: 0.5rem;
  align-items: center;

  padding: 0.35rem 0.4rem;

  color: rgba(255,255,255,0.85);
  text-decoration: none;

  border-radius: 0.4rem;

  transition: background 150ms ease, transform 150ms ease;
}

.slide-index-list a:hover,
.slide-index-list a.is-active {
  background: rgba(235,197,142,0.12);
  transform: translateX(2px);
  color: white;
}

/* NUMBER BOX */
.slide-index-number {
  display: flex;
  align-items: center;
  justify-content: center;

  min-width: 2rem;
  min-height: 1.6rem;

  font-size: 0.7rem;
  font-weight: 700;

  color: var(--accent);

  border: 1px solid rgba(235,197,142,0.25);
  border-radius: 0.35rem;

  background: rgba(0,0,0,0.25);
}

/* TITLE (hidden when collapsed) */
.slide-index-title {
  display: none;
  font-size: 0.8rem;
}

.nav-desktop.slide-index-rail:hover .slide-index-title,
.nav-desktop.slide-index-rail:focus-within .slide-index-title,
.nav-desktop.slide-index-rail.is-open .slide-index-title {
  display: inline;
}


/* MOBILE */
@media (max-width: 1099px) {

    .nav-desktop.slide-index-rail {
        position: fixed;
        top: 0.5rem;
        left: 0.5rem;

        width: 4.8rem;
        height: auto;
        max-height: calc(100vh - 1rem);

        display: block;

        overflow-x: hidden;
        overflow-y: auto;
    }

    .slide-nav-controls {
        display: flex;
        flex-direction: column;
        gap: 4px;
        margin-bottom: 10px;
    }

    .slide-index-list {
        display: block;
        overflow-x: hidden;
        overflow-y: auto;
    }

    .slide-index-list li {
        display: block;
    }

    .slide-index-list a {
        display: grid;
        grid-template-columns: 2.35rem 1fr;
    }

    .slide-index-title {
        display: none;
    }
}




.slide-nav-controls {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-bottom: 12px;
}

.slide-nav-btn {
    display: block;
    text-align: center;
    padding: 4px;
    color: white;
    text-decoration: none;
    border: 1px solid rgba(255,255,255,.25);
    border-radius: 4px;
    font-weight: bold;
    font-size: 16px;
}

.slide-nav-btn:hover {
    background: rgba(255,255,255,.15);
}

/* Add this to your global stylesheet */
.collapse.show {
    display: block !important;
    visibility: visible !important;
}