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

body {
    background: #1a1a2e;
    color: #e0e0e0;
    font-family: 'Segoe UI', sans-serif;
    height: 100vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

header {
    width: 100%;
    padding: 12px 20px;
    background: #16213e;
    border-bottom: 1px solid #0f3460;
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
    z-index: 10;
}

header h1 { font-size: 1.1rem; color: #e94560; }

#sidebarToggle {
    background: none;
    border: 1px solid #0f3460;
    border-radius: 8px;
    color: #888;
    padding: 4px 10px;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.2s;
}
#sidebarToggle:hover { border-color: #e94560; color: #e94560; }

.header-title {
    flex: 1;
    font-size: 0.9rem;
    color: #ccc;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.app-body { display: flex; flex: 1; overflow: hidden; }

.sidebar {
    width: 260px;
    background: #16213e;
    border-right: 1px solid #0f3460;
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    transition: width 0.25s ease, opacity 0.25s ease;
    overflow: hidden;
}
.sidebar.collapsed { width: 0; opacity: 0; pointer-events: none; }

.sidebar-header {
    padding: 12px 14px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid #0f3460;
}
.sidebar-header span {
    font-size: 0.8rem;
    color: #888;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

#newChatBtn {
    background: #e94560;
    border: none;
    border-radius: 8px;
    color: white;
    padding: 5px 12px;
    font-size: 0.8rem;
    cursor: pointer;
}
#newChatBtn:hover { background: #c73652; }

.session-list { flex: 1; overflow-y: auto; padding: 8px 0; }
.session-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 9px 14px;
    cursor: pointer;
    border-left: 3px solid transparent;
}
.session-item:hover { background: #1a1a2e; }
.session-item.active { background: #1a1a2e; border-left-color: #e94560; }
.session-item .s-title { flex: 1; font-size: 0.82rem; color: #ccc; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.session-item .s-meta { font-size: 0.7rem; color: #555; }
.session-item .s-del { background: none; border: none; color: #555; cursor: pointer; opacity: 0; }
.session-item:hover .s-del { opacity: 1; }
.session-item .s-del:hover { color: #e94560; }

.main { flex: 1; display: flex; flex-direction: column; overflow: hidden; }

.persona-bar {
    display: flex;
    gap: 8px;
    padding: 8px 16px;
    overflow-x: auto;
    border-bottom: 1px solid #0f3460;
}

.persona-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: 6px 12px;
    background: #16213e;
    border: 1px solid #0f3460;
    border-radius: 10px;
    cursor: pointer;
    position: relative;
    flex-shrink: 0;
}
.persona-card:hover { border-color: #e94560; }
.persona-card.active { border-color: #e94560; background: #1f1535; }
.persona-card .emoji { font-size: 1.2rem; }
.persona-card .pname { font-size: 0.7rem; color: #ccc; }
.persona-card .del-btn {
    position: absolute; top: -5px; right: -5px;
    width: 14px; height: 14px;
    background: #e94560; border: none; border-radius: 50%;
    color: white; font-size: 0.55rem; cursor: pointer;
    display: none;
}
.persona-card .edit-btn {
    position: absolute; top: -5px; left: -5px;
    width: 16px; height: 16px;
    background: #0f3460; border: 1px solid #e94560; border-radius: 50%;
    color: white; font-size: 0.55rem; cursor: pointer;
    display: none; align-items: center; justify-content: center;
}
.persona-card:hover .del-btn { display: flex; align-items: center; justify-content: center; }
.persona-card:hover .edit-btn { display: flex; }

.persona-add, .card-import-btn {
    display: flex; flex-direction: column; align-items: center;
    padding: 6px 12px;
    background: transparent;
    border: 1px dashed #0f3460; border-radius: 10px;
    cursor: pointer; color: #555; font-size: 0.7rem;
    flex-shrink: 0;
}
.persona-add:hover, .card-import-btn:hover { border-color: #e94560; color: #e94560; }

.messages {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 16px;
}

.message { display: flex; flex-direction: column; max-width: 75%; animation: fadeIn 0.2s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }
.message.user { align-self: flex-end; }
.message.assistant { align-self: flex-start; }

.bubble {
    padding: 10px 14px;
    border-radius: 16px;
    line-height: 1.5;
    font-size: 0.95rem;
    white-space: pre-wrap;
    word-break: break-word;
}
.bubble.typing-active::after { content: '▋'; animation: blink 0.7s infinite; color: #e94560; }
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }

.message.user .bubble { background: #0f3460; border-bottom-right-radius: 4px; }
.message.assistant .bubble { background: #16213e; border: 1px solid #0f3460; border-bottom-left-radius: 4px; }

.label { font-size: 0.7rem; color: #888; margin-bottom: 4px; padding: 0 4px; }
.message.user .label { text-align: right; }

.image-prompt-block {
    margin-top: 8px; padding: 8px 12px;
    background: #1a1a2e;
    border: 1px dashed #e94560;
    border-radius: 8px;
    font-size: 0.8rem; color: #e94560;
}
.image-prompt-header { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.image-prompt-block .prompt-text { display: block; color: #aaa; margin-top: 4px; font-style: italic; white-space: pre-wrap; }

.copy-prompt-btn, .gen-image-btn {
    background: #0f3460;
    border: 1px solid #e94560;
    border-radius: 6px;
    color: #e94560;
    font-size: 0.7rem;
    padding: 2px 8px;
    cursor: pointer;
}
.copy-prompt-btn:hover, .gen-image-btn:hover { background: #e94560; color: white; }

.translate-btn {
    align-self: flex-end;
    background: #0f3460;
    border: 1px solid #4a90d9;
    border-radius: 6px;
    color: #4a90d9;
    font-size: 0.7rem;
    padding: 2px 8px;
    cursor: pointer;
    margin-top: 4px;
}
.translate-btn:hover { background: #4a90d9; color: white; }
.translate-btn:disabled { opacity: 0.5; cursor: default; }

.chat-image { margin-top: 8px; max-width: 100%; border-radius: 8px; border: 1px solid #0f3460; }
.image-error { margin-top: 6px; font-size: 0.75rem; color: #888; }

.typing {
    align-self: flex-start;
    display: flex; gap: 4px;
    padding: 12px 16px;
    background: #16213e;
    border: 1px solid #0f3460;
    border-radius: 16px;
}
.typing span { width: 6px; height: 6px; background: #888; border-radius: 50%; animation: bounce 1.2s infinite; }
.typing span:nth-child(2) { animation-delay: 0.2s; }
.typing span:nth-child(3) { animation-delay: 0.4s; }
@keyframes bounce { 0%, 60%, 100% { transform: translateY(0); } 30% { transform: translateY(-6px); } }

.input-area {
    display: flex; gap: 10px;
    padding: 12px 16px;
    border-top: 1px solid #0f3460;
}

textarea {
    flex: 1;
    background: #16213e;
    border: 1px solid #0f3460;
    border-radius: 12px;
    color: #e0e0e0;
    font-size: 0.95rem;
    padding: 10px 14px;
    resize: none; outline: none;
    font-family: inherit;
    max-height: 120px;
}
textarea:focus { border-color: #e94560; }

#sendBtn {
    background: #e94560; border: none;
    border-radius: 12px; color: white;
    padding: 0 20px; cursor: pointer;
}
#sendBtn:disabled { background: #555; cursor: not-allowed; }

#clearBtn {
    background: transparent;
    border: 1px solid #0f3460;
    border-radius: 12px; color: #888;
    padding: 0 14px; cursor: pointer;
}
#clearBtn:hover { border-color: #e94560; color: #e94560; }

.modal-overlay {
    display: none; position: fixed; inset: 0;
    background: rgba(0,0,0,0.7);
    z-index: 100; align-items: center; justify-content: center;
}
.modal-overlay.open { display: flex; }

.modal {
    background: #16213e; border: 1px solid #0f3460;
    border-radius: 16px; padding: 24px;
    width: 100%; max-width: 440px;
    display: flex; flex-direction: column; gap: 12px;
}
.modal h2 { font-size: 1.1rem; color: #e94560; }
.modal label { display: flex; flex-direction: column; gap: 4px; font-size: 0.8rem; color: #888; }
.modal input, .modal textarea {
    background: #1a1a2e; border: 1px solid #0f3460;
    border-radius: 8px; color: #e0e0e0;
    padding: 8px 10px; outline: none; font-family: inherit;
}
.modal-buttons { display: flex; gap: 8px; justify-content: flex-end; }
.modal-buttons button { padding: 8px 18px; border-radius: 8px; border: none; cursor: pointer; }
#modalCancel, #cardModalCancel { background: #0f3460; color: #aaa; }
#modalSave, #cardModalImport { background: #e94560; color: white; }

.empty-state {
    flex: 1; display: flex;
    align-items: center; justify-content: center;
    color: #444; flex-direction: column; gap: 8px;
}
.empty-state .big { font-size: 2.5rem; }
.hidden { display: none !important; }