/* style.css */
/* Default Light Mode (Clean Minimalist) */
:root {
  --bg-color: #F8F9FA;
  --card-bg: #FFFFFF;
  --text-color: #212529;
  --accent-color: #4F46E5;
  --muted-text: #6C757D;
  --border-color: #E5E7EB;
  --danger: #ff3b30;
}

/* Dark Mode Override (Deep Space Console) */
body.dark-mode {
  --bg-color: #1A1A24;
  --card-bg: #2A2A35;
  --text-color: #E0E0E0;
  --accent-color: #00E5FF;
  --muted-text: #888888;
  --border-color: #3F3F4E;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  padding-bottom: 75vh; /* Space for FAB and scroll runway */
  transition: background-color 0.3s ease, color 0.3s ease;
}

.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  background-color: var(--card-bg);
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
  position: sticky;
  top: 0;
  z-index: 100;
}

.logo { font-weight: bold; font-size: 1.2rem; }
.settings-icon { font-size: 1.2rem; cursor: pointer; }

.feed-container {
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* Intent-Driven Search & Pill */
.search-container {
  display: flex;
  gap: 10px;
  position: sticky;
  top: 60px; /* just below app-header */
  z-index: 90;
  background-color: var(--bg-color);
  padding: 10px 0;
}

.search-container input {
  flex: 1;
  padding: 10px 14px;
  border: 1px solid var(--border-color);
  border-radius: 20px;
  font-size: 1rem;
  outline: none;
}

.search-container button {
  padding: 10px 18px;
  background-color: var(--accent-color);
  color: white;
  border: none;
  border-radius: 20px;
  font-weight: 600;
  cursor: pointer;
}

.pinned-topics {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding: 10px 0;
  -ms-overflow-style: none; /* IE and Edge */
  scrollbar-width: none; /* Firefox */
}

.pinned-topics::-webkit-scrollbar {
  display: none; /* Chrome, Safari and Opera */
}

.topic-pill {
  padding: 8px 16px;
  background-color: var(--card-bg) !important;
  color: var(--text-color) !important;
  border: 1px solid var(--border-color);
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s ease;
}

.topic-pill.active {
  background-color: var(--accent-color) !important;
  color: #ffffff !important;
  border-color: var(--accent-color) !important;
}

.active-feed {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 10px;
}

/* Base Post Card */
.post-card {
    perspective: 1000px;
    background: transparent !important;
    border: none !important;
    padding: 0 !important;
    margin-bottom: 15px;
    box-shadow: none !important;
}

.post-inner {
    position: relative;
    width: 100%;
    transition: transform 0.6s ease;
    transform-style: preserve-3d;
    cursor: pointer;
}

.post-card.flipped .post-inner {
    transform: rotateX(180deg);
}

.post-front, .post-back {
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    width: 100%;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 16px;
    box-sizing: border-box;
}

.post-back {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    transform: rotateX(180deg);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.thread-preview {
  margin: 0;
  font-size: 0.95rem;
  color: var(--text-color);
}

.post-author {
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--accent-color);
}

.reply-author {
  font-weight: 700;
  color: var(--text-color);
}

/* Floating Action Button */
.fab-compose {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 60px;
  height: 60px;
  background-color: var(--accent-color);
  color: white;
  border: none;
  border-radius: 50%;
  font-size: 2rem;
  box-shadow: 0 4px 12px rgba(0, 122, 255, 0.4);
  cursor: pointer;
  z-index: 1000;
}

/* Composer Modal & Overlay */
.modal-overlay {
  position: fixed;
  top: 0; left: 0; width: 100%; height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: flex-end; /* Aligns the sheet to the bottom */
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  z-index: 2000;
}

.hidden { display: none !important; }

.header-actions {
  display: flex;
  gap: 10px;
  align-items: center;
}

.nav-btn {
  background: none;
  border: none;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-color);
  cursor: pointer;
  padding: 6px 12px;
  border-bottom: 2px solid transparent; /* default state */
  border-radius: 4px; /* adjusted to match new design constraint less rounded */
  transition: all 0.2s;
}

.nav-btn.active-nav {
  color: var(--accent-color);
  font-weight: bold;
  border-bottom: 2px solid var(--accent-color);
}

.nav-btn:hover {
  background-color: var(--card-bg);
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.composer-sheet {
  width: 100%;
  background-color: var(--card-bg);
  border-radius: 20px 20px 0 0;
  padding: 20px;
  box-sizing: border-box;
  transform: translateY(100%);
  transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.modal-overlay.active .composer-sheet {
  transform: translateY(0);
}

.composer-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.close-btn {
  font-size: 1.5rem;
  color: var(--muted-text);
  cursor: pointer;
}

.post-btn {
  background-color: var(--accent-color);
  color: white;
  border: none;
  border-radius: 20px;
  padding: 8px 16px;
  font-weight: bold;
  cursor: pointer;
}

.composer-textarea {
  width: 100%;
  border: none;
  resize: none;
  font-size: 1.2rem;
  font-family: inherit;
  outline: none;
  min-height: 120px;
  color: var(--text-color);
  background-color: transparent;
}

.composer-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border-color);
  padding-top: 12px;
  margin-top: 12px;
}

.media-icon {
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--muted-text);
}

/* Modern Toggle Switch */
.local-toggle-container {
  display: flex;
  align-items: center;
  gap: 10px;
}

.local-label {
  font-size: 0.95rem;
  color: var(--muted-text);
  font-weight: 500;
}

.switch {
  position: relative;
  display: inline-block;
  width: 46px;
  height: 24px;
}

.switch input { opacity: 0; width: 0; height: 0; }

.slider {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: #ccc;
  transition: .4s;
}

.slider:before {
  position: absolute;
  content: "";
  height: 18px; width: 18px;
  left: 3px; bottom: 3px;
  background-color: white;
  transition: .4s;
}

input:checked + .slider { background-color: var(--accent-color); }
input:checked + .slider:before { transform: translateX(22px); }
.slider.round { border-radius: 24px; }
.slider.round:before { border-radius: 50%; }

@keyframes shatterAndFade {
    0% { transform: scale(1) rotate(0deg); opacity: 1; filter: blur(0px); }
    20% { transform: scale(1.05) rotate(-2deg); opacity: 0.8; }
    100% { transform: scale(0.5) rotate(10deg) translateY(20px); opacity: 0; filter: blur(5px); }
}

.comment-card {
    transition: max-height 0.4s ease, padding 0.4s ease, margin 0.4s ease;
    overflow: hidden;
}

.comment-card.shattering {
    animation: shatterAndFade 0.5s forwards;
    pointer-events: none;
}