html,
body {
  height: 100%;
}
body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Size for brand */
nav .navbar-brand {
  font-size: xx-large;
}

/*Footer*/
main.container {
  flex: 1 0 auto;
}
footer {
  flex-shrink: 0;
  width: 100%;
}
footer a {
  color: inherit;
  text-decoration: none;
  transition: color 0.3s;
}
footer a:hover {
  color: #007bff;
}
/* Navbar */
.glass-navbar {
  -webkit-backdrop-filter: blur(2px) saturate(180%);
  backdrop-filter: blur(2px) saturate(180%);
  background-color: rgba(255, 255, 255, 0.7) !important;
  box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
  transition: background-color 0.3s;
}
body {
  padding-top: 70px;
}

/* Dark mode support for glass navbar */
[data-bs-theme="dark"] .glass-navbar {
  background-color: rgba(30, 30, 40, 0.7) !important;
  box-shadow: 0 2px 16px rgba(0, 0, 0, 0.18);
}

/* Fade transition for main content */
.fade-in {
  opacity: 1;
  transition: opacity 0.3s;
}
.fade-out {
  opacity: 0;
  transition: opacity 0.3s;
}
/* Card styles */
.card {
  border-radius: 1rem;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
}
.card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
}
.blinking-cursor {
  animation: blink 1s infinite;
}
@keyframes blink {
  0%,
  100% {
    opacity: 0;
  }
  50% {
    opacity: 1;
  }
}

/*Tools*/
.tool-card {
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1),
    opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  opacity: 1;
  transform: scale(1) translateY(0);
  pointer-events: auto;
  height: auto;
  visibility: visible;
  will-change: transform, opacity;
}
.tool-card.hide {
  opacity: 0;
  transform: scale(0.95) translateY(20px);
  pointer-events: none;
  position: absolute;
  visibility: hidden;
}

.wip-locked {
  opacity: 0.5;
  pointer-events: none;
  cursor: not-allowed;
}
.wip-unlocked {
  opacity: 1;
  pointer-events: auto;
  cursor: pointer;
  transition: opacity 0.2s;
}

/* Search styles */
#toolSearch {
  max-width: 300px;
  display: inline-block;
  margin-bottom: 1rem;
}

/* Upcoming tools styles */
.opacity-50 {
  opacity: 0.5;
}
.pointer-events-none {
  pointer-events: none;
}
.cursor-not-allowed {
  cursor: not-allowed;
}

/* --- Periodic Table & Filter Button Styles --- */
.periodic-table {
  display: grid;
  grid-template-columns: repeat(18, 48px);
  gap: 4px;
  justify-content: center;
  margin: 0 auto;
}
.element-cell {
  background: var(--element-color, #f8f9fa);
  border: 2px solid transparent;
  border-radius: 8px;
  text-align: center;
  cursor: pointer;
  padding: 0.5rem 0;
  transition: background 0.2s, box-shadow 0.2s, filter 0.2s, opacity 0.2s;
  width: 48px;
  height: 48px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.03);
  opacity: 1;
}
.element-cell.inactive {
  opacity: 0.2;
  filter: grayscale(0.7);
}
.element-cell:hover {
  background: #e3f2fd !important;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  z-index: 2;
}
.element-symbol {
  font-weight: bold;
  font-size: 1.1em;
  color: #212529;
  line-height: 1;
}
.element-number {
  font-size: 0.8em;
  color: #888;
  line-height: 1;
}
.element-mass {
  font-size: 0.7em;
  color: #666;
  line-height: 1;
}
/* Filter Buttons - same placement and sizing in both modes */
.ptable-filters .btn.ptable-cat-btn,
.ptable-filters .btn.ptable-block-btn {
  font-weight: 500;
  border-radius: 8px;
  transition: box-shadow 0.2s, border 0.2s, background 0.2s, color 0.2s;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
  margin-bottom: 2px;
  border-width: 2px;
  border-style: solid;
  min-width: 80px;
  color: #222;
  background: var(--ptable-btn-bg, #fff) !important;
  border-color: var(--ptable-btn-border, #bbb) !important;
}
.ptable-filters .btn.ptable-cat-btn[data-color],
.ptable-filters .btn.ptable-block-btn[data-color] {
  --ptable-btn-bg: var(--ptable-btn-color, #fff);
  --ptable-btn-border: var(--ptable-btn-color, #bbb);
  color: #222;
  background: var(--ptable-btn-bg) !important;
  border-color: var(--ptable-btn-border) !important;
}
.ptable-filters .btn.ptable-cat-btn[data-color] {
  --ptable-btn-color: attr(data-color color);
}
.ptable-filters .btn.ptable-block-btn[data-color] {
  --ptable-btn-color: attr(data-color color);
}
.ptable-filters .btn.ptable-cat-btn:hover,
.ptable-filters .btn.ptable-cat-btn.active,
.ptable-filters .btn.ptable-block-btn:hover,
.ptable-filters .btn.ptable-block-btn.active {
  filter: brightness(1.1);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}
[data-bs-theme="dark"] .ptable-filters .btn.ptable-cat-btn,
[data-bs-theme="dark"] .ptable-filters .btn.ptable-block-btn {
  color: var(--ptable-btn-color, #fff) !important;
  background: transparent !important;
  border-color: var(--ptable-btn-color, #888) !important;
}
[data-bs-theme="dark"] .ptable-filters .btn.ptable-cat-btn[data-color],
[data-bs-theme="dark"] .ptable-filters .btn.ptable-block-btn[data-color] {
  --ptable-btn-color: attr(data-color color);
  color: var(--ptable-btn-color, #fff) !important;
  background: transparent !important;
  border-color: var(--ptable-btn-color, #888) !important;
}
[data-bs-theme="dark"] .ptable-filters .btn.ptable-cat-btn:hover,
[data-bs-theme="dark"] .ptable-filters .btn.ptable-cat-btn.active,
[data-bs-theme="dark"] .ptable-filters .btn.ptable-block-btn:hover,
[data-bs-theme="dark"] .ptable-filters .btn.ptable-block-btn.active {
  background: rgba(255, 255, 255, 0.08) !important;
  filter: brightness(1.2);
}
[data-bs-theme="dark"] .element-cell {
  background: transparent !important;
  color: #f8f9fa !important;
  border: 2px solid var(--element-color, #444) !important;
}
[data-bs-theme="dark"] .element-cell.inactive {
  opacity: 0.2;
  filter: grayscale(0.7);
}
[data-bs-theme="dark"] .element-symbol {
  color: var(--element-color, #fff) !important;
}
#ptable-search {
  margin-bottom: 8px;
  vertical-align: middle;
}
#ptable-legend .badge {
  margin-right: 4px;
  margin-bottom: 2px;
  font-size: 0.85em;
  padding: 0.5em 0.8em;
}
.element-cell[title]:hover:after {
  content: attr(title);
  position: absolute;
  left: 50%;
  top: -1.5em;
  transform: translateX(-50%);
  background: #222;
  color: #fff;
  padding: 2px 8px;
  border-radius: 6px;
  font-size: 0.8em;
  white-space: nowrap;
  z-index: 10;
  pointer-events: none;
}
/* --- End Periodic Table & Filter Button Styles --- */

/* Calculator */
.calculator-screen,
.sci-screen {
  background: var(--bs-body-bg) !important;
  color: var(--bs-body-color) !important;
  border: 1px solid var(--bs-border-color, #dee2e6);
}
.calculator-screen,
.sci-screen {
  background: var(--bs-body-bg) !important;
  color: var(--bs-body-color) !important;
  border: 1.5px solid var(--bs-border-color, #dee2e6);
  font-size: 1.6rem;
  border-radius: 0.75rem;
}
.btn-light,
.btn-warning,
.btn-danger,
.btn-secondary,
.btn-success {
  font-size: 1.15rem;
  border-radius: 0.5rem;
}
.card {
  border-radius: 1.25rem;
}
.live-preview #math-preview {
  background: #f8f9fa;
  color: #222;
  border-radius: 0.5rem;
  padding: 0.5rem 1rem;
  margin-top: 0.5rem;
  min-height: 2.5rem;
}
[data-bs-theme="dark"] .live-preview #math-preview {
  background: #23272b !important;
  color: #f8f9fa !important;
  border: 1px solid #444;
}
/*flashcard*/
.flashcard-flip {
  perspective: 600px;
}
.flashcard-inner {
  transition: transform 0.5s;
  transform-style: preserve-3d;
  position: relative;
  min-height: 120px;
}
.flashcard.flipped .flashcard-inner {
  transform: rotateY(180deg);
}
.flashcard-front,
.flashcard-back {
  backface-visibility: hidden;
  position: absolute;
  width: 100%;
  left: 0;
  top: 0;
  padding: 1rem;
}
.flashcard-back {
  transform: rotateY(180deg);
  background: #f8f9fa;
}
[data-bs-theme="dark"] .card,
[data-bs-theme="dark"] .flashcard,
[data-bs-theme="dark"] .live-preview,
[data-bs-theme="dark"] .modal-content {
  background: #23272b !important;
  color: #f8f9fa !important;
  border-color: #444 !important;
}
[data-bs-theme="dark"] .form-control,
[data-bs-theme="dark"] .form-select {
  background: #23272b !important;
  color: #f8f9fa !important;
  border-color: #444 !important;
}

/* Dark mode specific styles */
[data-bs-theme="dark"] .bi-moon-stars {
  color: #f8f9fa !important;
}

[data-bs-theme="dark"] a[href*="github.com"] {
  color: #f8f9fa !important;
}

[data-bs-theme="dark"] a[href*="github.com"]:hover {
  color: #90caf9 !important;
}
[data-bs-theme="dark"] .flashcard-back,
[data-bs-theme="dark"] .flashcard-front {
  background: #23272b !important;
  color: #f8f9fa !important;
}
[data-bs-theme="dark"] .element-cell {
  background: #23272b !important;
  color: #f8f9fa !important;
  border-color: #444 !important;
}
[data-bs-theme="dark"] #element-modal .modal-content {
  background: #23272b !important;
  color: #f8f9fa !important;
}
[data-bs-theme="dark"] iframe {
  filter: invert(1) hue-rotate(180deg) brightness(0.9) contrast(1.1);
  background: #23272b !important;
}
[data-bs-theme="dark"] .element-cell {
  background: transparent !important;
  color: var(--element-color, #fff) !important;
  border: 2px solid var(--element-color, #fff) !important;
}
[data-bs-theme="dark"] .element-cell[data-category] {
  --element-color: #ffb74d;
}
[data-bs-theme="dark"] .element-cell[data-category="alkali metal"] {
  --element-color: #ffb74d;
}
[data-bs-theme="dark"] .element-cell[data-category="alkaline earth metal"] {
  --element-color: #ffd54f;
}
[data-bs-theme="dark"] .element-cell[data-category="transition metal"] {
  --element-color: #90caf9;
}
[data-bs-theme="dark"] .element-cell[data-category="post-transition metal"] {
  --element-color: #b0bec5;
}
[data-bs-theme="dark"] .element-cell[data-category="metalloid"] {
  --element-color: #a5d6a7;
}
[data-bs-theme="dark"] .element-cell[data-category="nonmetal"] {
  --element-color: #fff176;
}
[data-bs-theme="dark"] .element-cell[data-category="noble gas"] {
  --element-color: #ce93d8;
}
[data-bs-theme="dark"] .element-cell[data-category="halogen"] {
  --element-color: #f06292;
}
[data-bs-theme="dark"] .element-cell[data-category="lanthanide"] {
  --element-color: #80cbc4;
}
[data-bs-theme="dark"] .element-cell[data-category="actinide"] {
  --element-color: #bcaaa4;
}
[data-bs-theme="dark"] .element-cell[data-category="unknown"] {
  --element-color: #eeeeee;
}
[data-bs-theme="dark"] .element-cell:hover {
  background: rgba(255, 255, 255, 0.1) !important;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}
[data-bs-theme="dark"] .btn[data-filter],
[data-bs-theme="dark"] .btn[data-filter-block] {
  background: transparent !important;
  color: var(--element-color, #fff) !important;
  border: 2px solid var(--element-color, #fff) !important;
}
[data-bs-theme="dark"] #timerCircle text,
[data-bs-theme="dark"] #pomodoroCircle text,
[data-bs-theme="dark"] #timerTimeText,
[data-bs-theme="dark"] #pomodoroTimeText {
  fill: #fff !important;
  color: #fff !important;
}
[data-bs-theme="dark"] .element-symbol {
  color: var(--element-color, #fff) !important;
}
[data-bs-theme="dark"] .element-cell {
  border: 1.5px solid var(--element-color, #fff) !important;
}
[data-bs-theme="dark"] .btn[data-filter],
[data-bs-theme="dark"] .btn[data-filter-block] {
  border-width: 1.5px !important;
}
#element-modal {
  display: none;
  position: fixed;
  z-index: 1050;
  left: 0;
  top: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.6);
  align-items: center;
  justify-content: center;
  transition: opacity 0.2s;
  padding: 2vw;
}
#element-modal.active {
  display: flex;
}
#element-modal .modal-content {
  background: var(--bs-body-bg, #fff);
  color: var(--bs-body-color, #222);
  border-radius: 1.25rem;
  max-width: 900px;
  width: 90vw;
  min-width: 0;
  margin: auto;
  padding: 2.5rem 2rem;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
  position: relative;
  max-height: 90vh;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
#element-modal .close {
  position: absolute;
  top: 1.2rem;
  right: 2rem;
  font-size: 2.2rem;
  color: #888;
  cursor: pointer;
  z-index: 2;
}
@media (max-width: 900px) {
  #element-modal .modal-content {
    max-width: 98vw;
    width: 98vw;
    padding: 1.2rem 0.5rem;
    border-radius: 0.8rem;
  }
}
@media (max-width: 600px) {
  #element-modal .modal-content {
    max-width: 100vw;
    width: 100vw;
    padding: 0.5rem 0.2rem;
    border-radius: 0.5rem;
  }
  #element-modal .modal-header h3 {
    font-size: 1.2rem;
  }
  #element-modal .modal-header,
  #element-modal .row.g-3 {
    flex-direction: column !important;
    gap: 0.5rem;
  }
}

/* White Noise Generator Styles */
.white-noise-container {
  display: flex;
  flex-direction: row;
  gap: 2.5rem;
  max-width: 1200px;
  margin: 0 auto;
  min-height: 540px;
  padding: 2.5rem 1rem 2rem 1rem;
}
.wn-list-col {
  flex: 1.1 1 0;
  min-width: 290px;
  max-width: 370px;
  background: #f7fafd;
  border-radius: 1.5rem;
  box-shadow: 0 4px 32px rgba(33, 150, 243, 0.07);
  padding: 1.7rem 1.2rem 1.2rem 1.2rem;
  display: flex;
  flex-direction: column;
  height: 540px;
  position: relative;
  border: 1.5px solid #e3eaf3;
}
[data-bs-theme="dark"] .wn-list-col {
  background: #23272b !important;
  border-color: #23272b !important;
  box-shadow: 0 4px 32px rgba(33, 150, 243, 0.13);
}
.wn-list-search {
  margin-bottom: 1.2rem;
  border-radius: 0.8em;
  font-size: 1.12em;
  background: #fff;
  border: 1.5px solid #e3eaf3;
  box-shadow: 0 1px 4px rgba(33, 150, 243, 0.03);
  padding: 0.7em 1em;
}
[data-bs-theme="dark"] .wn-list-search {
  background: #23272b;
  border-color: #333;
  color: #f8f9fa;
}
.wn-sound-list {
  flex: 1 1 auto;
  overflow-y: auto;
  max-height: 420px;
  padding-right: 2px;
  margin-bottom: 0.5rem;
}
.wn-sound-list::-webkit-scrollbar {
  width: 8px;
}
.wn-sound-list::-webkit-scrollbar-thumb {
  background: #b3d1f7;
  border-radius: 6px;
}
.wn-sound-list::-webkit-scrollbar-track {
  background: #f7fafd;
}
[data-bs-theme="dark"] .wn-sound-list::-webkit-scrollbar-thumb {
  background: #333b4a;
}
[data-bs-theme="dark"] .wn-sound-list::-webkit-scrollbar-track {
  background: #23272b;
}
.wn-sound-list-item {
  position: relative;
  margin-bottom: 0.6em;
  border-radius: 1em;
  transition: box-shadow 0.18s, background 0.18s;
  background: #fff;
  box-shadow: 0 1px 4px rgba(33, 150, 243, 0.04);
  border: 1.5px solid transparent;
}
.wn-sound-list-item:hover,
.wn-sound-list-item:focus-within {
  background: #e3f2fd;
  box-shadow: 0 2px 12px rgba(33, 150, 243, 0.13);
  border-color: #90caf9;
}
[data-bs-theme="dark"] .wn-sound-list-item {
  background: #23272b;
  box-shadow: 0 1px 4px rgba(33, 150, 243, 0.1);
}
[data-bs-theme="dark"] .wn-sound-list-item:hover,
[data-bs-theme="dark"] .wn-sound-list-item:focus-within {
  background: #1a222b !important;
  border-color: #333b4a;
}
.wn-sound-btn {
  width: 100%;
  text-align: left;
  border-radius: 1em;
  display: flex;
  align-items: center;
  gap: 0.7em;
  font-size: 1.13em;
  background: transparent;
  border: none;
  box-shadow: none;
  padding: 0.9em 0.7em 0.9em 0.3em;
  transition: background 0.18s, color 0.18s;
  color: #222;
}
[data-bs-theme="dark"] .wn-sound-btn {
  color: #f8f9fa;
}
.wn-sound-btn:focus {
  outline: 2px solid #2196f3;
  background: #e3f2fd;
}
[data-bs-theme="dark"] .wn-sound-btn:focus {
  background: #1a222b;
}
.wn-sound-btn .bi {
  font-size: 1.7em;
  margin-right: 0.6em;
  color: #2196f3;
}
[data-bs-theme="dark"] .wn-sound-btn .bi {
  color: #90caf9;
}
.wn-sound-desc {
  color: #888;
  font-size: 0.99em;
  margin-left: 0.7em;
}
[data-bs-theme="dark"] .wn-sound-desc {
  color: #bbb;
}
.wn-sound-hover-icons {
  position: absolute;
  right: 1.2em;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  gap: 0.4em;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.18s;
}
.wn-sound-list-item:hover .wn-sound-hover-icons,
.wn-sound-list-item:focus-within .wn-sound-hover-icons {
  opacity: 1;
  pointer-events: auto;
}
.wn-sound-hover-icons .btn {
  background: #e3f2fd;
  border-radius: 50%;
  box-shadow: 0 1px 4px rgba(33, 150, 243, 0.08);
  padding: 0.3em 0.5em;
  font-size: 1.3em;
  color: #2196f3;
  border: none;
  transition: background 0.15s, color 0.15s;
}
.wn-sound-hover-icons .btn:hover {
  background: #bbdefb;
  color: #1565c0;
}
[data-bs-theme="dark"] .wn-sound-hover-icons .btn {
  background: #23272b;
  color: #90caf9;
}
[data-bs-theme="dark"] .wn-sound-hover-icons .btn:hover {
  background: #1a222b;
  color: #42a5f5;
}
.wn-main-col {
  flex: 2 1 0;
  min-width: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  background: #fff;
  border-radius: 1.5rem;
  box-shadow: 0 4px 32px rgba(33, 150, 243, 0.07);
  padding: 2.5rem 2.5rem 1.7rem 2.5rem;
  min-height: 420px;
  margin-left: 0.2rem;
  border: 1.5px solid #e3eaf3;
}
[data-bs-theme="dark"] .wn-main-col {
  background: #181b1f !important;
  color: #f8f9fa !important;
  box-shadow: 0 4px 32px rgba(33, 150, 243, 0.13);
  border-color: #23272b !important;
}
.wn-mix-header {
  font-size: 1.3em;
  margin-bottom: 1.5em;
  width: 100%;
  padding-bottom: 0.7em;
  border-bottom: 1.5px solid #e3eaf3;
  font-weight: 700;
  letter-spacing: 0.01em;
}
[data-bs-theme="dark"] .wn-mix-header {
  border-bottom: 1.5px solid #23272b;
}
.wn-mix-list {
  width: 100%;
  min-height: 180px;
  margin-bottom: 1em;
  display: flex;
  flex-direction: column;
  gap: 1.1em;
}
.wn-mix-card {
  /* Use utility card class for consistency */
  padding: 1.3em 2em 1.3em 2em;
  display: flex;
  align-items: flex-start;
  gap: 2em;
  margin-bottom: 0.1em;
  position: relative;
  flex-wrap: wrap;
}
.wn-mix-icon {
  font-size: 2.5em;
  color: #2196f3;
  min-width: 2.5em;
  text-align: center;
  margin-top: 0.1em;
}
.wn-mix-info {
  flex: 1 1 0;
  min-width: 0;
  font-size: 1.18em;
  margin-right: 1.2em;
  display: flex;
  flex-direction: column;
  gap: 0.2em;
}
.wn-mix-info .fw-bold {
  font-size: 1.18em;
  font-weight: 700;
  margin-bottom: 0.1em;
}
.wn-mix-info .text-muted {
  color: #888 !important;
  font-size: 0.99em;
}
[data-bs-theme="dark"] .wn-mix-info .text-muted {
  color: #bbb !important;
}
.wn-mix-controls {
  display: flex;
  align-items: center;
  gap: 0.7em;
  flex-wrap: wrap;
}
.wn-mix-controls button {
  margin-right: 0.1em;
  font-size: 1.25em;
  padding: 0.35em 0.6em;
  border-radius: 0.6em;
}
.wn-mix-controls .btn {
  min-width: 2.2em;
  min-height: 2.2em;
  display: flex;
  align-items: center;
  justify-content: center;
}
.wn-mix-slider-group {
  display: flex;
  align-items: center;
  gap: 1.2em;
  margin-left: 1.2em;
}
.wn-mix-slider-label {
  font-size: 0.98em;
  color: #2196f3;
  font-weight: 500;
  margin-right: 0.5em;
  min-width: 3.5em;
  text-align: right;
}
[data-bs-theme="dark"] .wn-mix-slider-label {
  color: #90caf9;
}
.wn-mix-slider-value {
  font-size: 0.97em;
  color: #888;
  margin-left: 0.5em;
  min-width: 2.5em;
  text-align: left;
}
[data-bs-theme="dark"] .wn-mix-slider-value {
  color: #bbb;
}
.wn-mix-volume,
.wn-mix-speed {
  vertical-align: middle;
  margin-left: 0.2em;
  margin-right: 0.2em;
  width: 90px;
  accent-color: #2196f3;
  height: 2px;
}
.wn-mix-controls input[type="range"]:focus {
  outline: 2px solid #2196f3;
}
.wn-mix-controls input[type="range"]::-webkit-slider-thumb {
  background: #2196f3;
}
.wn-mix-controls input[type="range"]::-moz-range-thumb {
  background: #2196f3;
}
.wn-mix-controls input[type="range"]::-ms-thumb {
  background: #2196f3;
}
/* --- Modern, Compact, Square/Squircle Card & Control Styles for NeoBox Tools --- */

/* Universal Card & Button Polish */
.card,
.neo-card,
.neo-card-hover {
  border-radius: 1.25rem;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
}
.card:hover,
.neo-card-hover:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
}

/* Tools page styles */
#categoryTabs {
  justify-content: center;
  padding: 1rem 0;
  margin-bottom: 1rem;
  gap: 0.75rem !important;
}

#categoryTabs .btn {
  min-width: 100px;
  font-weight: 500;
  border-radius: 20px;
  padding: 0.5rem 1rem;
}

/* Login page styles */
.login-form {
  max-width: 400px;
  margin: 0 auto;
}

.login-form .input-group {
  margin-bottom: 1rem;
}

.login-form .input-group-text {
  min-width: 42px;
  justify-content: center;
}

/* Login form buttons */
.login-form .btn {
  font-size: 0.875rem;
  padding: 0.5rem 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
}

.login-form .btn i {
  font-size: 1rem;
}

/* Privacy and Terms pages */
.privacy-content,
.terms-content {
  max-width: 800px;
  margin: 0 auto;
}

.privacy-content h5,
.terms-content h5 {
  color: var(--bs-primary);
  margin-top: 2rem;
  margin-bottom: 1rem;
  font-weight: 600;
}

.privacy-content p,
.terms-content p {
  line-height: 1.6;
  color: var(--bs-body-color);
}

.privacy-content ul,
.terms-content ul {
  padding-left: 1.5rem;
}

.privacy-content li,
.terms-content li {
  margin-bottom: 0.75rem;
  position: relative;
  padding-left: 1.5rem;
}

.privacy-content li:before,
.terms-content li:before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--bs-primary);
}

/* Drag and Drop Zones */
.drop-zone {
  background: var(--bs-body-bg);
  border: 2px dashed var(--bs-border-color);
  border-radius: 0.5rem;
  padding: 2rem;
  text-align: center;
  transition: all 0.3s ease;
  cursor: pointer;
}

.drop-zone:hover {
  border-color: var(--bs-primary);
  background: var(--bs-primary-bg-subtle);
}

.drop-zone.dragover {
  border-color: var(--bs-primary);
  background: var(--bs-primary-bg-subtle);
  color: var(--bs-primary);
}

[data-bs-theme="dark"] .drop-zone {
  background: var(--bs-dark);
  border-color: var(--bs-gray-600);
}

[data-bs-theme="dark"] .drop-zone:hover,
[data-bs-theme="dark"] .drop-zone.dragover {
  background: var(--bs-gray-800);
  border-color: var(--bs-primary);
  color: var(--bs-primary);
}

.drop-zone .icon {
  font-size: 2rem;
  color: var(--bs-primary);
  margin-bottom: 1rem;
}

#dropZone.bg-secondary {
  background-color: #6c757d; /* Example grey background */
  border-color: #495057;
}