/* ==========================================================================
 *  Input Area - Modern Design with Improved Alignment
 *  ========================================================================== */
.input-area {
    padding: 10px;
    background: var(--bg-primary);
    display: flex;
    gap: 12px;
    align-items: center;
    flex-shrink: 0;
    border-top: none; /* Removed default border to be replaced by token bar when visible */
    box-sizing: border-box;
}

/* Restore normal border & adjust padding when token bar is hidden */
body.token-bar-hidden .input-area {
    border-top: 1px solid var(--border-color);
}

/* Upload Button */
#upload {
    padding: 0;
    width: 48px;
    height: 48px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-sizing: border-box;
    position: relative;
    overflow: hidden;
}

#upload::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at center, var(--accent) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

#upload:hover {
    background: var(--bg-tertiary);
    color: var(--accent);
    border-color: var(--accent);
    box-shadow: 0 4px 12px rgba(var(--accent-rgb, 171, 171, 171), 0.3);
}

#upload:hover::before {
    opacity: 0.1;
}

#upload svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    transition: transform 0.2s ease;
}

#file-input {
    display: none;
}

/* Message Input - Pill Shape */
#message {
    flex: 1;
    padding: 14px 20px;
    height: 48px; 
    min-height: auto;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    background: var(--bg-input);
    color: var(--text-primary);
    font-size: 1rem;
    outline: none;
    transition: all 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
    resize: none;
    max-height: 200px;
    font-family: inherit;
    line-height: 1.5;
    box-sizing: border-box;
    vertical-align: middle;
    
    /* Hide Scrollbar */
    scrollbar-width: none; 
    -ms-overflow-style: none;
}

#message::-webkit-scrollbar { 
    display: none; 
}

#message:focus {
    border-color: var(--accent);
}

#message::placeholder {
    color: var(--text-muted);
    transition: opacity 0.2s ease;
}

#message:focus::placeholder {
    opacity: 0.6;
}

#message:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

#message::placeholder {
    color: var(--text-muted);
}

#message:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Send Button */
#send, #stop {
    padding: 0 24px; 
    height: 48px; 
    border-radius: var(--radius-lg);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-sizing: border-box;
    vertical-align: middle;
    color: var(--text-primary);
    position: relative;
    overflow: hidden;
}

#send {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
}
#send:hover {
    background: var(--bg-tertiary);
    color: var(--accent);
    border-color: var(--accent);
    box-shadow: 0 4px 12px rgba(var(--accent-rgb, 171, 171, 171), 0.3);
}

#send::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(45deg, transparent 30%, rgba(255,255,255,0.1) 50%, transparent 70%);
    transform: translateX(-100%);
    transition: transform 0.6s ease;
}

#send:hover::after {
    transform: translateX(100%);
}

#send.hidden { display: none; }

#stop:hover {
    background: var(--button-stop-hover);
    box-shadow: 0 0 15px var(--button-stop-glow);
    border-color: var(--accent);
    transform: translateY(-2px);
}

#send:active, #stop:active { 
    transform: scale(0.96) translateY(0); 
}
#send:disabled { 
    opacity: 0.5; 
    cursor: not-allowed; 
    transform: none; 
}

#stop {
    background: var(--error-bg);
    border: 1px solid var(--error-border);
    color: var(--error);
    display: none;
}

#stop:hover {
    background: linear-gradient(135deg, #5a2a2a 0%, #4a1a1a 100%);
    box-shadow: 0 0 15px rgba(248, 113, 113, 0.3);
}

#stop.show {
    display: inline-flex !important;
    animation: buttonPopIn 0.3s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
    min-width: 48px;
    min-height: 48px;
    overflow: visible;
}

/* Stop button content: "Stop" text visible by default, streaming icons hidden */
#stop .stop-text {
    display: block;
    font-size: 0.95rem;
    font-weight: 600;
    line-height: 1;
}

/* Streaming icon - hidden by default */
#stop .streaming-icon {
    display: none;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

#stop .streaming-icon svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    stroke: currentColor;
    stroke-width: 2;
    fill: none;
}

/* Streaming indicator - hidden by default (THIS WAS THE PROBLEM) */
.streaming-indicator {
    display: none;
    align-items: center;
}


/* Hide all streaming sub-icons by default */
#stop .streaming-icon .icon-streaming,
#stop .streaming-icon .icon-typing,
#stop .streaming-icon .icon-skip {
    display: none;
}

/* Streaming states: hide "Stop" text, show streaming icon */
#stop.streaming .stop-text {
    display: none !important;
}
#stop.streaming .streaming-icon {
    display: inline-flex !important;
}

/* Typing: both tokens + typewriter running - show typing icon ONLY */
#stop.typing .streaming-icon .icon-typing {
    display: block !important;
}
#stop.typing .streaming-icon .icon-streaming {
    display: none !important;
}
#stop.typing .streaming-indicator {
    display: inline-flex !important;
}

/* Skip: tokens done, typewriter still running - show skip icon ONLY */
#stop.skip .streaming-icon .icon-skip {
    display: block !important;
}
#stop.skip .streaming-icon .icon-streaming {
    display: none !important;
}

/* Streaming only: tokens streaming, typewriter not started */
#stop.streaming:not(.typing):not(.skip) .streaming-icon .icon-streaming {
    display: block !important;
}

/* Ensure SVGs render on mobile */
@media (max-width: 768px) {
    #stop svg {
        width: 20px !important;
        height: 20px !important;
        stroke: var(--error, #f87171) !important;
        fill: none !important;
    }
}

/* Streaming indicator dots */
.streaming-indicator {
    display: inline-flex;
    align-items: center;
    margin-left: 6px;
}
/* Only position absolutely when actually visible (during streaming states) */
#stop.streaming .streaming-indicator {
    position: absolute;
    bottom: 10px;
    left: 2px;
    right: 0;
    margin: 0;
    justify-content: center;
}

.indicator-dot {
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--error);
    margin-right: 3px;
    animation: dotPulse 1.4s infinite ease-in-out;
}

.indicator-dot:nth-child(1) {
    animation-delay: 0s;
}

.indicator-dot:nth-child(2) {
    animation-delay: 0.2s;
}

.indicator-dot:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes dotPulse {
    0%, 80%, 100% {
        opacity: 0.3;
        transform: scale(0.8);
    }
    40% {
        opacity: 1;
        transform: scale(1.2);
    }
}

@keyframes buttonPopIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Token Usage Bar - Slim & Replaces Top Border */
.token-usage-container {
    align-items: center;
    justify-content: space-between;
    background: var(--bg-primary); /* Blends seamlessly with input area */
    font-size: 0.7rem;
    color: var(--text-secondary);
    box-sizing: border-box;
}

.token-usage-bar-bg {
    width: 100%;
    height: 1px; /* Ultra-slim track */
    background: var(--border-color);
    overflow: hidden;
}

.token-usage-bar-fill {
    height: 100%;
    width: 0%;
    background: var(--accent) !important; /* Sleek gradient */
    transition: width 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    position: relative;
    overflow: hidden;
}

.token-usage-bar-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transform: translateX(-100%);
    animation: shimmer 2s infinite;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.token-usage-container.shimmer-active .token-usage-bar-fill::after {
    opacity: 1;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.token-usage-text {
    position: relative;
    height: 0px;
    white-space: nowrap;
    font-size: 0.65rem;
    color: var(--text-muted);
    transition: color 0.2s ease;
    text-align: right;
    margin-right: 15px;
    bottom: 0.45rem;
    z-index: 1;
}

/* Warning state for high token usage */
.token-usage-container.warning .token-usage-bar-fill {
    background: linear-gradient(90deg, #f59e0b, #ef4444);
}

.token-usage-container.warning .token-usage-text {
    color: var(--error);
}

body.token-bar-hidden .input-area {
    border-top: 1px solid var(--border-color);
}

/* Streaming Status Indicator */
.streaming-status-indicator {
    font-size: 0.8rem;
    color: var(--text-secondary, #888);
    font-style: italic;
    margin: 4px 0 0 0; 
    padding: 2px 8px;
    animation: streamingFadeIn 0.3s ease-out;
    display: inline-block;
    width: 100%;
    box-sizing: border-box;
    text-align: left;
}

@keyframes streamingFadeIn {
    from { opacity: 0; transform: translateY(-4px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Optimistic UI Styles */
.user-placeholder {
    opacity: 0.7;
    filter: grayscale(0.5);
}

.placeholder-status {
    font-size: 0.75rem;
    color: var(--text-secondary, #888);
    margin-top: 4px;
    font-style: italic;
    text-align: left;
}

.typing-status-text {
    display: block;
    text-align: left; 
    font-size: 0.75rem;
    color: var(--text-secondary, #888);
    margin-bottom: 4px;
    margin-top: 0;
    font-style: italic;
    width: 100%;
    box-sizing: border-box;
    animation: statusFadeIn 0.2s ease-out;
}

.typing-status-text.hidden {
    display: none;
}

@keyframes statusFadeIn {
    from { opacity: 0; transform: translateY(2px); }
    to { opacity: 1; transform: translateY(0); }
}