/* ==========================================
   CHAT MESSAGES CONTAINER
   ========================================== */

.chat-messages {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 24px 0 120px 0;
    display: flex;
    flex-direction: column;
    gap: 20px;
    scroll-behavior: smooth;
    scroll-padding-top: 70px;
}

/* ==========================================
   MESSAGE STYLES – CLEAN & MINIMAL WITH SUBTLE COLOR
   ========================================== */

.message {
    display: flex;
    width: 100%;
    padding: 0 20px;
    animation: fadeIn 0.2s ease-out;
}

.message.slide-up {
    animation: slideUp 0.25s ease-out forwards;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message-inner {
    display: flex;
    flex-direction: column;
    width: 100%;
    max-width: 760px;
    margin: 0 auto;
    gap: 4px;
}

.message-row {
    display: flex;
    gap: 12px;
    width: 100%;
}

/* User message alignment */
.message.user .message-row {
    flex-direction: row-reverse;
    justify-content: flex-start;
}

.message.ai .message-row {
    flex-direction: row;
    justify-content: flex-start;
}

/* Avatars hidden – clean UI */
.msg-avatar {
    display: none !important;
}

/* Message content base */
.msg-content {
    font-size: 0.95rem;
    line-height: 1.6;
    min-width: 0;
    max-width: 100%;
    word-wrap: break-word;
}

/* ===== USER MESSAGE – subtle blue‑gray tint ===== */
.message.user .msg-content {
    background: #2a2e3c;
    color: #f0f0f5;
    padding: 10px 18px;
    border-radius: 20px;
    border-bottom-right-radius: 4px;
    border: 1px solid #3e4455;
    width: auto;
    max-width: 75%;
    margin-left: auto;
    font-weight: 400;
    transition: border-color 0.2s ease;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.message.user .msg-content:hover {
    transform: none;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
    background: #2e3240;
    border-color: #4a5163;
}

/* ===== AI MESSAGE – clean dark neutral ===== */
.message.ai .msg-content {
    background: #1c1c24;
    color: #e0e0e8;
    padding: 12px 20px;
    border-radius: 20px;
    border-top-left-radius: 4px;
    border: 1px solid #2e2e38;
    width: 100%;
    box-sizing: border-box;
    transition: none;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.message.ai .msg-content:hover {
    border-color: #3a3a46;
    background: #1f1f28;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
}

/* Remove extra gap when avatar hidden */
.message.user .message-row {
    gap: 0;
}

/* ==========================================
   MESSAGE ACTIONS (Copy, Edit, Regenerate)
   ========================================== */

.message-actions {
    display: flex;
    gap: 8px;
    margin-top: 6px;
    opacity: 0;
    transition: opacity 0.15s ease;
}

.message:hover .message-actions,
.message .message-actions:hover {
    opacity: 1;
}

.message.user .message-actions {
    justify-content: flex-end;
}

.message.ai .message-actions {
    justify-content: flex-start;
    margin-left: 0;
}

.message-action-btn {
    background: transparent;
    border: 1px solid #3a3a44;
    color: #b0b0b8;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 12px;
    border-radius: 30px;
    font-size: 0.75rem;
    font-weight: 500;
    transition: background 0.15s, border-color 0.15s, color 0.15s;
    font-family: inherit;
}

.message-action-btn:hover {
    background: #2a2a34;
    color: #f0f0f0;
    border-color: #50505c;
    transform: none;
}

/* ==========================================
   LOADING & ERROR STATES
   ========================================== */

.loading-message,
.error-message {
    text-align: center;
    padding: 1.5rem;
    color: #9a9aa8;
    font-size: 0.9rem;
}

/* ==========================================
   BACK TO BOTTOM BUTTON – fixed & clean
   ========================================== */

.back-to-bottom {
    position: fixed;
    bottom: 140px;
    right: 320px;
    width: 44px;
    height: 44px;
    background: #1e1e26;
    color: #c0c0cc;
    border: 1px solid #3a3a44;
    border-radius: 50%;
    cursor: pointer;
    z-index: 100;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s, visibility 0.2s, background 0.15s, border-color 0.15s, transform 0.15s;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.back-to-bottom:hover {
    background: #2a2a36;
    border-color: #50505c;
    color: #ffffff;
    transform: translateY(-2px);
}

.back-to-bottom.show {
    opacity: 1;
    visibility: visible;
}

@media (max-width: 640px) {
    .back-to-bottom {
        right: 16px;
        bottom: 90px;
        width: 40px;
        height: 40px;
    }
}

/* ==========================================
   FILE PREVIEW – minimal attachment display
   ========================================== */

.message-files {
    max-width: 760px;
    margin: 0 auto;
    width: 100%;
    padding: 0 20px;
    display: flex;
    justify-content: flex-end;
}

.files-preview-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: flex-end;
    max-width: 75%;
}

.file-preview-item {
    background: #1e1e26;
    border: 1px solid #3a3a44;
    border-radius: 30px;
    padding: 5px 14px 5px 10px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    font-weight: 400;
    color: #d0d0d8;
    transition: border-color 0.15s;
    cursor: default;
    box-shadow: none;
}

.file-preview-item:hover {
    transform: none;
    border-color: #5a5a6a;
    background: #1e1e26;
    box-shadow: none;
}

.file-icon {
    font-size: 1.1rem;
}

.file-name {
    max-width: 140px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-family: monospace;
    font-size: 0.75rem;
}

.file-size {
    font-size: 0.65rem;
    color: #9a9aa8;
    margin-left: 4px;
}

.files-preview-header {
    display: none;
}

@keyframes premiumFadeIn {
    0% { opacity: 0; transform: translateY(6px); }
    100% { opacity: 1; transform: translateY(0); }
}

.file-preview-item {
    animation: premiumFadeIn 0.2s ease-out forwards;
}

/* ==========================================
   CHAT HEADER – clean, centered title
   ========================================== */

.chat-header {
    position: sticky;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(9, 9, 11, 0.98);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid #2a2a32;
    padding: 12px 24px;
    z-index: 45;
    margin: 0;
}

.chat-title {
    font-size: 0.95rem;
    font-weight: 500;
    color: #e0e0e8;
    margin: 0;
    padding: 0;
    text-align: center;
    letter-spacing: -0.2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

/* Hide header when welcome screen is visible */
.welcome-screen:not(.hidden) ~ .chat-header,
.chat-messages.hidden + .chat-header {
    display: none;
}

/* ==========================================
   PREVENT OVERLAP WITH STICKY HEADER
   ========================================== */

.chat-messages .message:first-child {
    scroll-margin-top: 70px;
}

.chat-area {
    padding-top: 0 !important;
    position: relative;
}

.floating-navbar {
    z-index: 1000;
}

/* ==========================================
   CODE BLOCKS – minimal monochrome
   ========================================== */

.message.ai .msg-content pre,
.message.ai .msg-content code {
    background: #121218;
    border-radius: 8px;
    padding: 0.2em 0.4em;
    font-family: 'SF Mono', 'JetBrains Mono', monospace;
    font-size: 0.9em;
    border: 1px solid #2e2e38;
}

.message.ai .msg-content pre {
    padding: 14px;
    overflow-x: auto;
}

/* ==========================================
   RESPONSIVE TWEAKS
   ========================================== */

@media (max-width: 600px) {
    .message {
        padding: 0 12px;
    }
    .message.user .msg-content {
        max-width: 85%;
        padding: 8px 16px;
    }
    .message.ai .msg-content {
        padding: 10px 16px;
    }
}

/* ==========================================
   INLINE EDIT MODE – NO RESIZE, SAME SIZE
   ========================================== */

/* Edit mode: parent div ki padding hatao, border cyan */
.message.user.editing .msg-content {
    padding: 0;
    border-color: var(--accent-cyan, #06b6d4);
    transition: border-color 0.2s ease;
}

/* Textarea: same padding, background, NO min-height, height auto */
.inline-edit-textarea {
    width: 100%;
    padding: 10px 18px;           /* same as original bubble padding */
    border-radius: 20px;
    border-bottom-right-radius: 4px;
    background: #2a2e3c;
    color: #f0f0f5;
    border: none;
    font-family: inherit;
    font-size: 0.95rem;
    line-height: 1.6;
    resize: vertical;
    outline: none;
    box-sizing: border-box;
    height: auto;                 /* important: height auto, no min-height */
    overflow-y: auto;
}

.inline-edit-textarea:focus {
    outline: none;
}