/* --- Název souboru: style.css | Verze: 6.4 (UX Vylepšení a Card Design) --- */

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

:root {
    --bg-main: #0f172a;        
    --bg-surface: #1e293b;     
    --bg-surface-hover: #334155; 
    --border-color: #334155;
    
    --text-primary: #f8fafc;   
    --text-secondary: #94a3b8; 
    --text-muted: #64748b;     
    
    --accent-color: #3b82f6;   
    --accent-hover: #60a5fa;   
    --accent-transparent: rgba(59, 130, 246, 0.15);
    
    --success-color: #10b981;  
    --danger-color: #ef4444;   
    --danger-transparent: rgba(239, 68, 68, 0.15);
    --whisper-color: #8b5cf6;  
    --whisper-transparent: rgba(139, 92, 246, 0.15);
    
    --font-main: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, monospace;
    
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-pill: 9999px;
    
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.3), 0 2px 4px -1px rgba(0,0,0,0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.4), 0 4px 6px -2px rgba(0,0,0,0.2);
    
    --gallery-item-size: 100px;
}

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

html, body { 
    height: 100%; 
    width: 100%; 
    overflow: hidden; 
    margin: 0; padding: 0;
    overscroll-behavior-y: none; 
}

html { font-family: var(--font-main); font-size: 16px; }
body { 
    -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; 
    background-color: var(--bg-main); color: var(--text-primary); 
}

#chat-app-container {
    position: fixed; inset: 0; width: 100%; 
    height: 100dvh;
    height: var(--vh, 100vh); 
    display: flex; flex-direction: column; background-color: var(--bg-main);
    z-index: 1000;
}

a { text-decoration: none; color: var(--accent-color); }
button, input, textarea { font-family: inherit; }

::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: var(--radius-pill); }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

.hidden { display: none !important; }
.w-100 { width: 100%; }
.mb-15 { margin-bottom: 15px; }
.highlight-text { color: var(--accent-color); font-weight: 600; }
.accent-text { color: var(--accent-color); }
.error-text { color: var(--danger-color); font-size: 0.9rem; margin-top: 10px; }
.empty-state { text-align: center; color: var(--text-secondary); font-size: 0.95rem; padding: 2rem 1rem; font-style: italic; }

.primary-btn { 
    background-color: var(--accent-color); color: #fff; border: none;
    border-radius: var(--radius-pill); padding: 10px 20px; font-size: 1rem; font-weight: 600;
    cursor: pointer; transition: background-color 0.2s, transform 0.1s;
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
}
.primary-btn:hover { background-color: var(--accent-hover); transform: scale(1.02); }
.primary-btn:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }

.secondary-btn {
    background-color: var(--bg-surface-hover); color: var(--text-primary); border: 1px solid var(--border-color);
    border-radius: var(--radius-pill); padding: 8px 16px; font-size: 0.9rem; font-weight: 500;
    cursor: pointer; transition: all 0.2s; display: inline-flex; align-items: center; justify-content: center; gap: 6px;
}
.secondary-btn:hover { background-color: var(--border-color); border-color: var(--text-muted); }

.icon-btn {
    background: transparent; border: none; color: var(--text-secondary);
    width: 36px; height: 36px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center;
    cursor: pointer; transition: all 0.2s; font-size: 1.2rem;
}
.icon-btn:hover { background-color: var(--bg-surface-hover); color: var(--text-primary); }
.icon-btn.with-text { width: auto; padding: 0 12px 0 8px; border-radius: var(--radius-pill); font-size: 0.9rem; font-weight: 500; }

.fab-btn {
    position: absolute; bottom: 20px; right: 20px; z-index: 50;
    width: 50px; height: 50px; background-color: var(--bg-surface-hover); color: var(--text-primary);
    border: 1px solid var(--border-color); border-radius: 50%; box-shadow: var(--shadow-lg);
    cursor: pointer; display: flex; justify-content: center; align-items: center; 
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.fab-btn:hover { transform: translateY(-4px); background-color: var(--border-color); }

#floating-new-pill {
    position: absolute; top: 16px; left: 50%; transform: translateX(-50%);
    background-color: var(--accent-color); color: #fff; padding: 8px 20px;
    border-radius: var(--radius-pill); font-size: 0.85rem; font-weight: 600;
    box-shadow: var(--shadow-lg); cursor: pointer; z-index: 45;
    display: flex; align-items: center; gap: 6px; transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s;
}
#floating-new-pill.hidden { transform: translateX(-50%) translateY(-30px); opacity: 0; pointer-events: none; }
#floating-new-pill:hover { background-color: var(--accent-hover); transform: translateX(-50%) scale(1.05); }

/* Vylepšení pro klikatelnou profilovku */
.clickable-avatar { cursor: pointer; transition: transform 0.2s, opacity 0.2s; }
.clickable-avatar:hover { transform: scale(1.05); opacity: 0.9; }

.avatar { width: 40px; height: 40px; border-radius: 50%; display: flex; align-items: center; justify-content: center; color: #fff; font-weight: 600; font-size: 1rem; flex-shrink: 0; overflow: hidden; background-color: var(--border-color); }
.avatar img { width: 100%; height: 100%; object-fit: cover; }
.avatar-small { width: 24px; height: 24px; border-radius: 50%; display: flex; align-items: center; justify-content: center; color: #fff; font-weight: 600; font-size: 0.75rem; flex-shrink: 0; overflow: hidden; background-color: var(--border-color); }
.avatar-small img { width: 100%; height: 100%; object-fit: cover; }
.avatar-large { width: 64px; height: 64px; border-radius: 50%; display: flex; align-items: center; justify-content: center; color: #fff; font-weight: 700; font-size: 1.5rem; flex-shrink: 0; margin: 0 auto; overflow: hidden; background-color: var(--border-color); }
.avatar-large img { width: 100%; height: 100%; object-fit: cover; }

.badge {
    background-color: var(--accent-color); color: #fff; font-size: 0.7rem; font-weight: bold;
    padding: 2px 6px; border-radius: var(--radius-pill); display: inline-flex; align-items: center; justify-content: center;
}
.danger-badge { background-color: var(--danger-color); }
.info-badge { background-color: var(--accent-color); width: 10px; height: 10px; padding: 0; border-radius: 50%; }

.page-container { display: flex; height: 100%; width: 100%; max-width: 1200px; margin: 0 auto; flex-grow: 1; }
.main-column {
    display: flex; flex-direction: column; width: 100%; height: 100%; 
    background-color: var(--bg-main); flex-grow: 1; position: relative;
}
.sidebar-column { display: none; }

@media (min-width: 900px) {
    #chat-app-container { position: static; height: 100vh; display: flex; justify-content: center; }
    .page-container { display: grid; grid-template-columns: minmax(0, 1fr) 350px; gap: 0; border-left: 1px solid var(--border-color); border-right: 1px solid var(--border-color); }
    .main-column { border-right: 1px solid var(--border-color); }
    .sidebar-column { display: flex; flex-direction: column; background-color: var(--bg-main); height: 100%; min-height: 0; }
    .mobile-only { display: none !important; }
}

#app-header {
    background-color: rgba(15, 23, 42, 0.85); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color); z-index: 40; padding: 12px 16px; display: flex; flex-direction: column; gap: 10px; flex-shrink: 0;
}
.header-top { display: flex; justify-content: space-between; align-items: center; }
.header-top h1 { font-size: 1.25rem; font-weight: 700; margin: 0; letter-spacing: -0.5px; }
.header-actions { display: flex; gap: 4px; }

.header-bottom { 
    display: flex; justify-content: space-between; align-items: center; 
    flex-wrap: nowrap !important; gap: 8px; width: 100%;
}
.radius-control { display: flex; align-items: center; gap: 6px; font-size: 0.8rem; color: var(--text-secondary); flex-shrink: 0; }
.radius-control input[type="range"] { -webkit-appearance: none; appearance: none; width: 70px; background: transparent; cursor: pointer; }
.radius-control input[type="range"]::-webkit-slider-runnable-track { height: 4px; background: var(--border-color); border-radius: var(--radius-pill); }
.radius-control input[type="range"]::-webkit-slider-thumb { -webkit-appearance: none; height: 16px; width: 16px; background: var(--accent-color); border-radius: 50%; margin-top: -6px; transition: transform 0.2s; }

.header-stats {
    display: flex; align-items: center; gap: 6px; font-size: 0.8rem; color: var(--text-secondary);
    background-color: var(--bg-surface); padding: 4px 10px 4px 4px; border-radius: var(--radius-pill); border: 1px solid var(--border-color);
    flex-shrink: 1; min-width: 0; position: relative; cursor: pointer; transition: background-color 0.2s;
}
.header-stats:hover { background-color: var(--bg-surface-hover); }
#header-badge { position: absolute; top: -4px; right: -4px; }

.header-text-wrapper { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; display: inline-block; }

#thread-header {
    background-color: var(--bg-surface); border-bottom: 1px solid var(--border-color);
    padding: 12px 16px; display: flex; align-items: center; gap: 12px; z-index: 30; flex-shrink: 0;
    box-shadow: var(--shadow-sm);
}
#thread-header h2 { font-size: 1.1rem; font-weight: 600; margin: 0; }

#chat-container-wrapper { position: relative; flex-grow: 1; overflow: hidden; background-color: var(--bg-main); }

/* Drobný odstup shora i zespoda pro Feed aby karty nebyly nalepené na okraji */
#chat-container { 
    position: absolute; inset: 0; overflow-y: auto; 
    padding: 10px 0; /* Přidán vertikální padding pro karty */
    display: flex; flex-direction: column; scroll-behavior: smooth; touch-action: pan-y; 
}

#loading-overlay {
    position: fixed; inset: 0; z-index: 9999;
    background-color: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
    display: flex; justify-content: center; align-items: center;
    transition: opacity 0.3s, visibility 0.3s;
}
.loading-visible { opacity: 1; visibility: visible; pointer-events: auto; }
.loading-hidden { opacity: 0; visibility: hidden; pointer-events: none; }

.spinner { width: 40px; height: 40px; border: 4px solid var(--border-color); border-top-color: var(--accent-color); border-radius: 50%; animation: spin 1s linear infinite; }
.spinner-small { width: 20px; height: 20px; border: 3px solid var(--border-color); border-top-color: var(--accent-color); border-radius: 50%; animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

#load-more-container { display: flex; justify-content: center; padding: 20px; min-height: 80px; align-items: center; }
#loading-indicator { display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 40px 20px; color: var(--text-secondary); gap: 15px; }

.skeleton-wrapper { display: flex; flex-direction: column; width: 100%; padding: 0 12px; }
.skeleton-card { padding: 16px; margin-bottom: 12px; border-radius: var(--radius-md); background-color: var(--bg-surface); border: 1px solid var(--border-color); display: flex; gap: 12px; }
.skeleton-avatar { width: 40px; height: 40px; border-radius: 50%; background-color: var(--bg-surface-hover); flex-shrink: 0; animation: skel-pulse 1.5s ease-in-out infinite; }
.skeleton-body { display: flex; flex-direction: column; gap: 12px; flex-grow: 1; padding-top: 4px; }
.skeleton-line { height: 10px; background-color: var(--bg-surface-hover); border-radius: var(--radius-sm); animation: skel-pulse 1.5s ease-in-out infinite; }
.skeleton-line.w-40 { width: 40%; }
.skeleton-line.w-90 { width: 90%; }
.skeleton-line.w-60 { width: 60%; }
@keyframes skel-pulse { 0% { opacity: 0.5; } 50% { opacity: 1; } 100% { opacity: 0.5; } }

.date-separator { text-align: center; margin: 12px 0 16px 0; position: relative; display: flex; justify-content: center; align-items: center; }
.date-separator::before { content: ''; position: absolute; left: 16px; right: 16px; height: 1px; background: var(--border-color); z-index: 1; }
.date-separator span { background: var(--bg-main); padding: 0 16px; font-size: 0.75rem; font-weight: 600; color: var(--text-muted); text-transform: uppercase; z-index: 2; letter-spacing: 0.5px; }

/* === NOVÝ DESIGN: KARTY (Card Design) === */
.post-card { 
    padding: 16px; 
    margin: 0 12px 14px 12px; 
    border-radius: var(--radius-md); 
    background-color: var(--bg-surface); 
    border: 1px solid var(--border-color); 
    box-shadow: 0 2px 5px rgba(0,0,0,0.15);
    transition: transform 0.2s, box-shadow 0.2s, background-color 0.2s; 
    position: relative;
    cursor: pointer; /* Indikace, že karta je klikatelná (pro vstup do diskuze) */
}

/* Hover efekt karty */
.post-card:hover { 
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
    border-color: var(--text-muted);
}
.post-card.has-replies { padding-bottom: 12px; }

/* Aktivní styly karet */
.post-me { border-left: 3px solid var(--accent-color); }
.post-crisis { background-color: var(--danger-transparent); border-color: rgba(239, 68, 68, 0.4); border-left: 3px solid var(--danger-color); }
.post-crisis:hover { background-color: rgba(239, 68, 68, 0.2); }
.post-whisper { background-color: var(--whisper-transparent); border: 1px dashed rgba(139, 92, 246, 0.5); border-left: 3px solid var(--whisper-color); }
.post-whisper:hover { background-color: rgba(139, 92, 246, 0.2); }

/* Specifické odsazení pro pod-odpovědi ve vlákně */
/* Využíváme levý okraj jako vizuální linku napojení */
.thread-level-1 { margin-left: 2.5rem; margin-top: -6px; border-top-left-radius: 0; border-bottom-left-radius: 0; position: relative; }
.thread-level-2 { margin-left: 4.5rem; margin-top: -6px; border-top-left-radius: 0; border-bottom-left-radius: 0; position: relative; }
.thread-level-3 { margin-left: 6.5rem; margin-top: -6px; border-top-left-radius: 0; border-bottom-left-radius: 0; position: relative; }

/* Vykreslení zatáčky u vláken (L-křivka spojující příspěvky) - Vizuální stromeček */
.thread-level-1::before, .thread-level-2::before, .thread-level-3::before {
    content: ''; position: absolute; left: -20px; top: -14px; width: 20px; height: 34px;
    border-left: 2px solid var(--border-color); border-bottom: 2px solid var(--border-color);
    border-bottom-left-radius: 8px; z-index: -1;
}

@media (max-width: 600px) {
    .post-card { margin: 0 8px 12px 8px; padding: 14px; }
    .thread-level-1 { margin-left: 1.5rem; }
    .thread-level-2 { margin-left: 2.5rem; }
    .thread-level-3 { margin-left: 3.5rem; }
    .thread-level-1::before, .thread-level-2::before, .thread-level-3::before { left: -12px; width: 12px; }
}

.post-badge { position: absolute; top: 0; right: 0; font-size: 0.65rem; font-weight: 700; text-transform: uppercase; padding: 3px 8px; border-bottom-left-radius: var(--radius-md); border-top-right-radius: calc(var(--radius-md) - 1px); letter-spacing: 0.5px; z-index: 2; }
.crisis-badge { background-color: var(--danger-color); color: #fff; }
.whisper-badge { background-color: var(--whisper-color); color: #fff; }

.post-layout { display: flex; gap: 12px; }
.post-avatar-col { flex-shrink: 0; z-index: 2; }
.post-body { flex-grow: 1; min-width: 0; display: flex; flex-direction: column; gap: 4px; z-index: 2; pointer-events: none; } /* Umožní prokliknout tělo rovnou na kartu */
.post-body > * { pointer-events: auto; } /* Obsah v těle opět reaguje na klik */

.post-header { display: flex; align-items: baseline; flex-wrap: wrap; gap: 8px; }
.post-username { font-weight: 700; font-size: 0.95rem; color: var(--text-primary); }
.clickable-username { cursor: pointer; }
.clickable-username:hover { text-decoration: underline; color: var(--accent-color); }

.post-meta { font-size: 0.8rem; color: var(--text-secondary); display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
.expire-badge { display: inline-flex; align-items: center; gap: 4px; background-color: var(--bg-surface); border: 1px solid var(--border-color); padding: 1px 6px; border-radius: var(--radius-sm); font-size: 0.75rem; color: var(--text-secondary); cursor: help; }
.countdown-text { color: var(--danger-color); font-weight: 600; font-variant-numeric: tabular-nums; }

.post-reply-quote { display: block; font-size: 0.85rem; color: var(--text-secondary); background-color: var(--bg-main); border-left: 3px solid var(--border-color); padding: 8px 12px; border-radius: 0 var(--radius-sm) var(--radius-sm) 0; margin-top: 4px; margin-bottom: 8px; transition: all 0.2s; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.post-reply-quote:hover { border-left-color: var(--accent-color); background-color: var(--bg-surface-hover); color: var(--text-primary); }
.post-reply-quote strong { color: var(--text-primary); }

.post-content { font-size: 0.95rem; line-height: 1.5; color: var(--text-primary); word-wrap: break-word; white-space: pre-wrap; }
.post-content a { color: var(--accent-color); text-decoration: none; transition: color 0.2s; position: relative; z-index: 5;}
.post-content a:hover { color: var(--accent-hover); text-decoration: underline; }

.post-image { display: block; width: 100%; max-height: 250px; border-radius: var(--radius-md); margin-top: 12px; border: 1px solid var(--border-color); cursor: zoom-in; object-fit: cover; object-position: center; background-color: var(--bg-main); position: relative; z-index: 5; }

.post-footer { display: flex; flex-direction: column; gap: 10px; margin-top: 12px; }
.post-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 4px; margin-left: -8px; }
.action-btn { background: transparent; border: none; color: var(--text-secondary); font-size: 0.85rem; padding: 6px 12px; border-radius: var(--radius-pill); cursor: pointer; transition: all 0.2s; display: inline-flex; align-items: center; gap: 6px; font-weight: 500; position: relative; z-index: 5; }
.action-btn:hover { background-color: var(--accent-transparent); color: var(--accent-color); }
.action-btn.delete-btn:hover { background-color: var(--danger-transparent); color: var(--danger-color); }

.reactions-display { display: flex; flex-wrap: wrap; gap: 6px; position: relative; z-index: 5;}
.reaction-chip { background-color: var(--bg-main); border: 1px solid var(--border-color); color: var(--text-secondary); padding: 4px 10px; border-radius: var(--radius-pill); font-size: 0.85rem; font-weight: 600; cursor: pointer; display: inline-flex; align-items: center; gap: 4px; transition: all 0.2s; }
.reaction-chip:hover { background-color: var(--bg-surface-hover); border-color: var(--text-muted); }
.reaction-chip.reacted { background-color: var(--accent-transparent); border-color: transparent; color: var(--accent-color); }
.reaction-chip .count { opacity: 0.8; }

.thread-divider { font-size: 0.85rem; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; padding: 16px 20px 8px 20px; }

.popover { position: absolute; background-color: var(--bg-surface); border: 1px solid var(--border-color); border-radius: var(--radius-pill); box-shadow: var(--shadow-lg); padding: 6px; display: flex; gap: 4px; z-index: 100; opacity: 1; transition: opacity 0.2s, transform 0.2s; }
.popover.hidden { opacity: 0; pointer-events: none; transform: translateY(5px); }
.reaction-emoji { font-size: 1.4rem; padding: 6px; border-radius: 50%; cursor: pointer; transition: transform 0.2s, background-color 0.2s; }
.reaction-emoji:hover { transform: scale(1.2); background-color: var(--bg-surface-hover); }

.composer-area { background-color: var(--bg-main); border-top: 1px solid var(--border-color); flex-shrink: 0; z-index: 20; padding: 0; display: flex; flex-direction: column; width: 100%; box-shadow: 0 -4px 10px rgba(0,0,0,0.1); }

.typing-indicator { font-size: 0.8rem; color: var(--accent-color); padding: 6px 16px; display: flex; align-items: center; gap: 6px; font-weight: 500; }
.typing-text { margin-right: 4px; }
.typing-dot { width: 4px; height: 4px; border-radius: 50%; background-color: var(--accent-color); animation: typing-wave 1.4s infinite ease-in-out both; }
.typing-dot:nth-child(2) { animation-delay: 0.2s; } .typing-dot:nth-child(3) { animation-delay: 0.4s; }
@keyframes typing-wave { 0%, 100% { transform: translateY(0); opacity: 0.5; } 50% { transform: translateY(-3px); opacity: 1; } }

.composer-preview { display: flex; justify-content: space-between; align-items: center; padding: 10px 16px; background-color: var(--bg-surface); border-bottom: 1px solid var(--border-color); font-size: 0.85rem; }
.whisper-theme { background-color: var(--whisper-transparent); color: var(--whisper-color); }
.preview-content { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; flex-grow: 1; margin-right: 10px; }
#image-preview { height: 40px; width: 40px; object-fit: cover; border-radius: var(--radius-sm); margin-right: 10px; border: 1px solid var(--border-color); }

.composer-tools { display: flex; gap: 8px; padding: 10px 16px 0 16px; overflow-x: auto; }
.tool-pill { background-color: var(--bg-surface); color: var(--text-secondary); border: 1px solid var(--border-color); border-radius: var(--radius-pill); padding: 4px 12px; font-size: 0.75rem; font-weight: 600; text-transform: uppercase; cursor: pointer; transition: all 0.2s; white-space: nowrap; }
.tool-pill:hover { background-color: var(--bg-surface-hover); color: var(--text-primary); }
#pill-crisis-btn.active { background-color: var(--danger-transparent); border-color: var(--danger-color); color: var(--danger-color); }
#pill-ttl-btn.active { background-color: var(--accent-transparent); border-color: var(--accent-color); color: var(--accent-color); }

.composer-input-row { display: flex; align-items: flex-end; gap: 8px; padding: 10px 16px 16px 16px; }
#message-input { flex-grow: 1; background-color: var(--bg-surface); border: 1px solid var(--border-color); color: var(--text-primary); border-radius: 20px; padding: 10px 16px; font-size: 0.95rem; line-height: 1.4; resize: none; overflow-y: hidden; max-height: 120px; transition: border-color 0.2s, box-shadow 0.2s; }
#message-input:focus { outline: none; border-color: var(--accent-color); box-shadow: 0 0 0 1px var(--accent-color); background-color: var(--bg-surface-hover); }
#message-input::placeholder { color: var(--text-muted); }

.send-btn { position: relative; background-color: var(--accent-color); color: #fff; border: none; border-radius: 50%; width: 40px; height: 40px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; cursor: pointer; transition: all 0.2s; }
.send-btn:hover { background-color: var(--accent-hover); transform: scale(1.05); }
.send-btn.is-sending { pointer-events: none; opacity: 0.8; transform: none; background-color: var(--bg-surface-hover); }
.send-btn .spinner-icon { display: none; width: 18px; height: 18px; border: 2px solid rgba(255,255,255,0.3); border-top-color: #fff; border-radius: 50%; animation: spin 1s linear infinite; }
.send-btn.is-sending .send-icon { display: none; }
.send-btn.is-sending .spinner-icon { display: block; }

#emoji-picker { position: absolute; bottom: calc(100% + 10px); right: 16px; background-color: var(--bg-surface); border: 1px solid var(--border-color); border-radius: var(--radius-md); box-shadow: var(--shadow-lg); padding: 8px; display: grid; grid-template-columns: repeat(5, 1fr); gap: 4px; z-index: 100; }
#emoji-picker button { background: transparent; border: none; font-size: 1.4rem; padding: 6px; border-radius: var(--radius-sm); cursor: pointer; transition: background-color 0.2s; }
#emoji-picker button:hover { background-color: var(--bg-surface-hover); }

.sidebar-header { padding: 16px; border-bottom: 1px solid var(--border-color); display: flex; justify-content: space-between; align-items: center; }
.sidebar-header h2 { font-size: 1.1rem; font-weight: 600; margin: 0; }
.gallery-grid { padding: 16px; display: grid; grid-template-columns: repeat(auto-fill, minmax(var(--gallery-item-size), 1fr)); gap: 10px; overflow-y: auto; align-content: start; touch-action: pan-y; }
.gallery-item { aspect-ratio: 1/1; border-radius: var(--radius-md); overflow: hidden; background-color: var(--bg-surface); border: 1px solid var(--border-color); display: block; transition: transform 0.2s, box-shadow 0.2s; }
.gallery-item img { width: 100%; height: 100%; object-fit: cover; transition: opacity 0.2s; }
.gallery-item:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); border-color: var(--text-muted); }

.modal-hidden { opacity: 0; visibility: hidden; pointer-events: none; }
.modal-hidden, .modal-visible { position: fixed; inset: 0; z-index: 5000; background-color: rgba(15, 23, 42, 0.85); backdrop-filter: blur(4px); display: flex; justify-content: center; align-items: center; padding: 16px; transition: opacity 0.3s, visibility 0.3s; }
.modal-visible { opacity: 1; visibility: visible; pointer-events: auto; }

.welcome-modal-content, .modal-content { background-color: var(--bg-main); border: 1px solid var(--border-color); border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); width: 100%; max-width: 480px; display: flex; flex-direction: column; max-height: 90vh; transform: scale(0.95); transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275); }
.modal-visible .welcome-modal-content, .modal-visible .modal-content { transform: scale(1); }

.welcome-modal-content { padding: 32px 24px; text-align: center; }
.logo-placeholder { font-size: 3rem; margin-bottom: 16px; }
.welcome-modal-content h2 { font-size: 1.5rem; font-weight: 700; margin-bottom: 8px; }
.app-subtitle { color: var(--text-secondary); font-size: 1rem; margin-bottom: 24px; }
#welcome-form { display: flex; flex-direction: column; gap: 16px; }
#welcome-form input { background-color: var(--bg-surface); border: 1px solid var(--border-color); color: var(--text-primary); border-radius: var(--radius-md); padding: 12px 16px; font-size: 1rem; text-align: center; transition: border-color 0.2s; }
#welcome-form input:focus { outline: none; border-color: var(--accent-color); }

.modal-header { padding: 16px 20px; border-bottom: 1px solid var(--border-color); display: flex; justify-content: space-between; align-items: center; }
.modal-header h2 { font-size: 1.1rem; font-weight: 600; margin: 0; }
.modal-body { padding: 20px; overflow-y: auto; touch-action: pan-y; }

.profile-tabs { display: flex; border-bottom: 1px solid var(--border-color); margin-bottom: 15px; }
.profile-tab { flex: 1; text-align: center; padding: 10px 15px; cursor: pointer; color: var(--text-secondary); border-bottom: 2px solid transparent; font-weight: 600; transition: all 0.2s; font-size: 0.9rem; }
.profile-tab.active { color: var(--accent-color); border-bottom-color: var(--accent-color); }
.profile-tab-content { display: none; }
.profile-tab-content.active { display: block; animation: fade-in 0.3s ease; }
@keyframes fade-in { from { opacity: 0; transform: translateY(5px); } to { opacity: 1; transform: translateY(0); } }

.avatar-upload-label { cursor: pointer; display: inline-block; position: relative; border-radius: 50%; overflow: hidden; margin-bottom: 10px; border: 2px solid var(--border-color); }
.avatar-upload-label:hover::after { content: '✏️'; position: absolute; inset:0; background: rgba(0,0,0,0.5); border-radius: 50%; display:flex; align-items:center; justify-content:center; font-size: 1.5rem; }
.bio-input { width: 100%; background-color: var(--bg-surface); border: 1px solid var(--border-color); color: var(--text-primary); border-radius: var(--radius-md); padding: 12px; font-size: 0.95rem; resize: vertical; min-height: 80px; margin-top: 10px; margin-bottom: 15px; }
.bio-input:focus { outline: none; border-color: var(--accent-color); }

.dashboard-content { max-width: 400px; }
.dash-section { border-bottom: 1px solid var(--border-color); padding-bottom: 16px; margin-bottom: 16px; }
.dash-section.no-border { border-bottom: none; padding-bottom: 0; }
.dash-section h3 { font-size: 0.95rem; font-weight: 600; color: var(--text-primary); margin-bottom: 12px; display: flex; align-items: center; gap: 8px; }
.dash-list { list-style: none; padding: 0; margin: 0; max-height: 160px; overflow-y: auto; display: flex; flex-direction: column; gap: 8px; touch-action: pan-y; }
.dash-list li { background-color: var(--bg-surface); padding: 10px 14px; border-radius: var(--radius-md); font-size: 0.9rem; color: var(--text-secondary); border: 1px solid var(--border-color); display: flex; align-items: center; gap: 10px; }
.dash-list li.empty-list { background: transparent; border: none; font-style: italic; padding: 4px 0; }
.whisper-jump-item { cursor: pointer; border-color: rgba(139, 92, 246, 0.3) !important; background-color: var(--whisper-transparent) !important; color: var(--text-primary) !important; transition: transform 0.2s; }
.whisper-jump-item:hover { transform: translateX(4px); border-color: var(--whisper-color) !important; }

.text-content p { margin-bottom: 1rem; line-height: 1.6; color: var(--text-secondary); }
.text-content strong { color: var(--text-primary); }

.user-profile-content { max-width: 600px; height: 85vh; }
.profile-header-info { display: flex; flex-direction: column; align-items: center; gap: 12px; width: 100%; margin-top: 10px; }
.user-bio-display { font-size: 0.9rem; color: var(--text-secondary); text-align: center; margin: 0 10px 10px 10px; font-style: italic; max-width: 80%; line-height: 1.4; }
.section-title { font-size: 0.9rem; font-weight: 600; text-transform: uppercase; color: var(--text-muted); letter-spacing: 0.5px; margin-bottom: 12px; border-bottom: 1px solid var(--border-color); padding-bottom: 8px; }
#user-profile-messages { display: flex; flex-direction: column; gap: 8px; } /* Změněno z listu na flex pro sub-karty */

#image-modal { flex-direction: column; z-index: 6000; touch-action: none; }
.image-modal-content { max-width: 95vw; max-height: 80vh; object-fit: contain; border-radius: var(--radius-md); box-shadow: var(--shadow-lg); transition: transform 0.2s ease-out; }
#modal-caption { margin-top: 20px; text-align: center; width: 100%; max-width: 600px; transition: opacity 0.2s; }
#modal-text { font-size: 1rem; color: #fff; margin-bottom: 16px; line-height: 1.5; text-shadow: 0 1px 3px rgba(0,0,0,0.8); }

.pwa-banner { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%) translateY(100px); background-color: var(--bg-surface); border: 1px solid var(--border-color); border-radius: var(--radius-lg); padding: 16px; box-shadow: var(--shadow-lg); display: flex; justify-content: space-between; align-items: center; width: 90%; max-width: 400px; z-index: 10000; transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1); }
.pwa-banner:not(.hidden) { transform: translateX(-50%) translateY(0); }
.pwa-info { display: flex; flex-direction: column; gap: 4px; }
.pwa-info strong { font-size: 0.95rem; color: var(--text-primary); }
.pwa-info span { font-size: 0.8rem; color: var(--text-secondary); }
.pwa-actions { display: flex; align-items: center; gap: 12px; margin-left: 16px; }

.toast { position: fixed; bottom: 80px; left: 50%; transform: translateX(-50%); background-color: var(--text-primary); color: var(--bg-main); padding: 10px 20px; border-radius: var(--radius-pill); font-size: 0.9rem; font-weight: 600; box-shadow: var(--shadow-lg); z-index: 11000; transition: opacity 0.3s, transform 0.3s; }
.toast.hidden { opacity: 0; transform: translateX(-50%) translateY(20px); pointer-events: none; }