/* =========================================
   Shanu AI — Premium Glassmorphism UI v3
   Developer: Shiva Saini
   Upgrades: Markdown Tables, Code Blocks, Copy Buttons, Z-index Fixes
========================================= */

/* ---- Variables & Reset ---- */
:root {
    --bg-dark:          #06080E;
    --primary:          #00E5FF;
    --primary-dim:      rgba(0, 229, 255, 0.15);
    --primary-glow:     rgba(0, 229, 255, 0.45);
    --secondary:        #6366f1;
    --secondary-dim:    rgba(99, 102, 241, 0.2);
    --accent-green:     #10B981;
    --accent-red:       #F43F5E;
    --text-main:        #F0F4FF;
    --text-muted:       #6B7280;
    --text-sub:         #9CA3AF;
    --glass-bg:         rgba(14, 20, 34, 0.65);
    --glass-bg-light:   rgba(255, 255, 255, 0.04);
    --glass-border:     rgba(255, 255, 255, 0.07);
    --glass-border-h:   rgba(255, 255, 255, 0.14);
    --user-msg:         linear-gradient(135deg, #00D4F5 0%, #0062FF 100%);
    --bot-msg:          rgba(22, 31, 50, 0.85);
    --shadow-sm:        0 4px 16px rgba(0, 0, 0, 0.25);
    --shadow-md:        0 8px 32px rgba(0, 0, 0, 0.35);
    --shadow-lg:        0 20px 60px rgba(0, 0, 0, 0.5);
    --radius-sm:        10px;
    --radius-md:        16px;
    --radius-lg:        24px;
    --radius-xl:        32px;
    --transition:       all 0.25s cubic-bezier(0.4, 0, 0.2, 1);

    /* Code block theme */
    --code-bg:          #0D1117;
    --code-header-bg:   rgba(255, 255, 255, 0.04);
    --code-border:      rgba(255, 255, 255, 0.08);
}

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

html { scroll-behavior: smooth; }

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    height: 100dvh;
    overflow: hidden;
    position: relative;
    font-family: 'Plus Jakarta Sans', sans-serif;
    -webkit-font-smoothing: antialiased;
}

/* ---- Noise Texture Overlay ---- */
.noise-overlay {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    opacity: 0.025;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    background-repeat: repeat;
    background-size: 128px 128px;
}

/* ---- Animated Background Blobs ---- */
.bg-blobs {
    position: fixed;
    inset: 0;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}

.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(90px);
    will-change: transform;
}

.blob-1 {
    width: 500px; height: 500px;
    background: radial-gradient(circle, rgba(0,229,255,0.35) 0%, transparent 70%);
    top: -150px; left: -150px;
    animation: floatBlob1 20s infinite alternate ease-in-out;
}

.blob-2 {
    width: 600px; height: 600px;
    background: radial-gradient(circle, rgba(99,102,241,0.3) 0%, transparent 70%);
    bottom: -200px; right: -150px;
    animation: floatBlob2 25s infinite alternate ease-in-out;
}

.blob-3 {
    width: 350px; height: 350px;
    background: radial-gradient(circle, rgba(16,185,129,0.15) 0%, transparent 70%);
    top: 40%; left: 40%;
    animation: floatBlob3 18s infinite alternate ease-in-out;
}

@keyframes floatBlob1 {
    0%   { transform: translate(0, 0) scale(1); }
    50%  { transform: translate(60px, 40px) scale(1.15); }
    100% { transform: translate(30px, 80px) scale(0.9); }
}
@keyframes floatBlob2 {
    0%   { transform: translate(0, 0) scale(1); }
    50%  { transform: translate(-50px, -40px) scale(1.1); }
    100% { transform: translate(-80px, 30px) scale(1.2); }
}
@keyframes floatBlob3 {
    0%   { transform: translate(0, 0) scale(1); opacity: 0.5; }
    100% { transform: translate(-40px, -60px) scale(1.3); opacity: 0.2; }
}

/* ---- Layout ---- */
.app-container {
    display: flex;
    height: 100dvh;
    width: 100%;
    position: relative;
    z-index: 1;
}

/* ========== SIDEBAR ========== */
.sidebar {
    width: 275px;
    flex-shrink: 0;
    background: rgba(8, 12, 22, 0.75);
    border-right: 1px solid var(--glass-border);
    display: flex;
    flex-direction: column;
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 200;
}

.sidebar-header {
    padding: 22px 20px;
    display: flex;
    align-items: center;
    gap: 14px;
    border-bottom: 1px solid var(--glass-border);
}

.logo-box {
    width: 46px; height: 46px;
    background: linear-gradient(135deg, #00E5FF, #6366f1);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 22px;
    color: #000;
    box-shadow: 0 0 20px var(--primary-glow);
    position: relative;
    flex-shrink: 0;
}

.logo-pulse {
    position: absolute;
    inset: -3px;
    border-radius: 16px;
    border: 1.5px solid rgba(0, 229, 255, 0.35);
    animation: logoPulse 2.5s infinite;
}

@keyframes logoPulse {
    0%, 100% { opacity: 0.6; transform: scale(1); }
    50%       { opacity: 0;   transform: scale(1.18); }
}

.brand-info h2 {
    font-size: 15px;
    font-weight: 700;
    letter-spacing: 0.3px;
    color: var(--text-main);
}

.brand-info p {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 1px;
}

.sidebar-nav {
    flex: 1;
    padding: 20px 16px;
    overflow-y: auto;
    overflow-x: hidden;
}

.nav-item {
    width: 100%;
    padding: 11px 14px;
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-sub);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    transition: var(--transition);
    font-size: 13.5px;
    font-weight: 600;
    font-family: inherit;
    text-align: left;
}

.nav-item:hover {
    background: var(--glass-bg-light);
    border-color: var(--glass-border);
    color: var(--text-main);
    transform: translateX(2px);
}

.nav-item.active {
    background: var(--primary-dim);
    border-color: rgba(0, 229, 255, 0.2);
    color: var(--primary);
}

.history-label {
    font-size: 10.5px;
    color: var(--text-muted);
    margin: 22px 0 10px 6px;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.mood-history {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.sidebar-footer {
    padding: 14px 20px;
    border-top: 1px solid var(--glass-border);
    display: flex;
    justify-content: flex-end;
    gap: 8px;
}

.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    z-index: 190;
    backdrop-filter: blur(4px);
}

/* ========== CHAT WRAPPER ========== */
.chat-wrapper {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
    position: relative;
}

/* ---- Header ---- */
.chat-header {
    height: 68px;
    padding: 0 28px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--glass-border);
    background: rgba(0, 0, 0, 0.15);
    backdrop-filter: blur(8px);
    flex-shrink: 0;
    position: relative;
    z-index: 100; /* below mood dropdown */
}

.header-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.mobile-menu-btn { display: none; }

.mood-selector-wrapper { position: relative; }

.glass-btn {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--glass-border);
    color: var(--text-main);
    padding: 8px 16px 8px 14px;
    border-radius: var(--radius-xl);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13.5px;
    font-weight: 600;
    font-family: inherit;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.glass-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--glass-border-h);
}

.chev-icon {
    font-size: 10px;
    transition: transform 0.25s ease;
    color: var(--text-muted);
}

.glass-btn.open .chev-icon { transform: rotate(180deg); }

/* ---- Mood Dropdown ---- */
/* FIXED: z-index raised to 9999 to always appear above all content */
.mood-dropdown {
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    width: 190px;
    background: rgba(10, 14, 26, 0.96);
    border: 1px solid var(--glass-border-h);
    border-radius: var(--radius-md);
    padding: 6px;
    display: none;
    z-index: 9999; /* FIX: was 300, now 9999 — always on top */
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(20px);
    animation: dropIn 0.2s ease forwards;
}

.mood-dropdown.show { display: block; }

@keyframes dropIn {
    from { opacity: 0; transform: translateY(-8px) scale(0.97); }
    to   { opacity: 1; transform: translateY(0)   scale(1); }
}

.mood-item {
    padding: 10px 13px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 13.5px;
    font-weight: 500;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.mood-item:hover {
    background: var(--primary-dim);
    color: var(--primary);
    transform: translateX(3px);
}

/* Status Indicator */
.status-indicator {
    display: flex;
    align-items: center;
    gap: 7px;
    font-size: 12.5px;
    color: var(--text-muted);
    font-weight: 500;
}

.dot {
    width: 7px; height: 7px;
    background: var(--accent-green);
    border-radius: 50%;
}

.pulse-dot {
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.6);
    animation: statusPulse 2.5s infinite;
}

@keyframes statusPulse {
    0%   { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.6); }
    70%  { box-shadow: 0 0 0 6px rgba(16, 185, 129, 0);  }
    100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0);   }
}

/* ========== CHAT DISPLAY ========== */
.chat-display {
    flex: 1;
    overflow-y: auto;
    padding: 28px 32px;
    display: flex;
    flex-direction: column;
    scroll-behavior: smooth;
    overscroll-behavior: contain;
}

/* Welcome Screen */
.welcome-screen {
    margin: auto;
    text-align: center;
    max-width: 460px;
    animation: fadeSlideUp 0.8s ease both;
}

.welcome-icon-wrap {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 80px; height: 80px;
    margin: 0 auto 20px;
}

.welcome-icon {
    font-size: 38px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    z-index: 1;
    animation: starSpin 6s linear infinite;
}

@keyframes starSpin {
    0%   { transform: rotate(0deg)   scale(1);   }
    50%  { transform: rotate(180deg) scale(1.1); }
    100% { transform: rotate(360deg) scale(1);   }
}

.welcome-ring {
    position: absolute;
    inset: 0;
    border-radius: 50%;
    border: 1.5px solid rgba(0, 229, 255, 0.2);
    animation: ringExpand 2.5s ease-in-out infinite;
}

@keyframes ringExpand {
    0%   { transform: scale(1);   opacity: 0.6; }
    100% { transform: scale(1.6); opacity: 0;   }
}

.welcome-screen h1 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 10px;
    background: linear-gradient(to right, #F0F4FF, #9CA3AF);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.welcome-screen p {
    font-size: 13.5px;
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 24px;
}

.feature-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
}

.pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 13px;
    background: var(--glass-bg-light);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    font-size: 12px;
    color: var(--text-sub);
    font-weight: 500;
    transition: var(--transition);
}

.pill:hover {
    border-color: rgba(0,229,255,0.25);
    color: var(--primary);
    background: var(--primary-dim);
}

.pill i { font-size: 10px; }

/* ========== MESSAGE BUBBLES ========== */
.msg {
    max-width: 76%;
    padding: 14px 18px;
    border-radius: 18px;
    margin-bottom: 16px;
    font-size: 14.5px;
    line-height: 1.7;
    animation: popIn 0.35s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
    opacity: 0;
    transform: translateY(12px) scale(0.95);
    word-break: break-word;
}

.msg.user {
    align-self: flex-end;
    background: var(--user-msg);
    color: #fff;
    border-bottom-right-radius: 4px;
    font-weight: 600;
    box-shadow: 0 4px 20px rgba(0, 149, 255, 0.25);
}

.msg.bot {
    align-self: flex-start;
    background: var(--bot-msg);
    border: 1px solid var(--glass-border);
    border-bottom-left-radius: 4px;
    backdrop-filter: blur(12px);
    box-shadow: var(--shadow-sm);
    /* No white-space: pre-wrap — markdown handles line breaks */
}

/* File message variant */
.msg.file-msg {
    padding: 0;
    background: transparent;
    border: none;
    box-shadow: none;
    max-width: 340px;
}

.file-msg-card {
    background: rgba(20, 28, 48, 0.85);
    border: 1px solid var(--glass-border-h);
    border-radius: 16px;
    border-bottom-right-radius: 4px;
    padding: 14px 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    backdrop-filter: blur(10px);
}

.file-msg-icon {
    width: 42px; height: 42px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
}

.file-msg-icon.image { background: rgba(0, 229, 255, 0.12); color: var(--primary);      }
.file-msg-icon.pdf   { background: rgba(244, 63, 94, 0.12); color: var(--accent-red);   }
.file-msg-icon.text  { background: rgba(99, 102, 241, 0.12); color: var(--secondary);   }

.file-msg-info { min-width: 0; }

.file-msg-name {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-main);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.file-msg-sub {
    font-size: 11.5px;
    color: var(--text-muted);
    margin-top: 2px;
}

/* Typing Indicator */
.typing-indicator {
    display: flex;
    gap: 5px;
    padding: 14px 18px;
    background: var(--bot-msg);
    border: 1px solid var(--glass-border);
    border-radius: 18px;
    border-bottom-left-radius: 4px;
    width: fit-content;
    margin-bottom: 16px;
    align-self: flex-start;
    backdrop-filter: blur(12px);
    animation: popIn 0.3s ease forwards;
    opacity: 0;
}

.typing-dot {
    width: 6px; height: 6px;
    background: var(--text-muted);
    border-radius: 50%;
    animation: typingBounce 1.2s infinite;
}

.typing-dot:nth-child(1) { animation-delay: 0s;    }
.typing-dot:nth-child(2) { animation-delay: 0.18s; }
.typing-dot:nth-child(3) { animation-delay: 0.36s; }

@keyframes typingBounce {
    0%, 60%, 100% { transform: translateY(0);   opacity: 0.35; }
    30%            { transform: translateY(-5px); opacity: 1;    }
}

/* ========================================
   MARKDOWN STYLING — Bot Messages
   Tables, Bold, Italic, Lists, Headings
======================================== */

/* Headings inside bot messages */
.msg.bot h1, .msg.bot h2, .msg.bot h3,
.msg.bot h4, .msg.bot h5, .msg.bot h6 {
    color: var(--text-main);
    font-weight: 700;
    margin: 14px 0 6px;
    line-height: 1.3;
}

.msg.bot h1 { font-size: 18px; }
.msg.bot h2 { font-size: 16px; }
.msg.bot h3 { font-size: 14.5px; }

/* Paragraphs */
.msg.bot p {
    margin: 6px 0;
    line-height: 1.7;
}

.msg.bot p:first-child { margin-top: 0; }
.msg.bot p:last-child  { margin-bottom: 0; }

/* Bold & Italic */
.msg.bot strong { color: var(--primary); font-weight: 700; }
.msg.bot em     { color: var(--text-sub); font-style: italic; }

/* Inline code */
.msg.bot :not(pre) > code {
    background: rgba(0, 229, 255, 0.1);
    border: 1px solid rgba(0, 229, 255, 0.15);
    color: var(--primary);
    padding: 2px 7px;
    border-radius: 6px;
    font-size: 13px;
    font-family: 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
}

/* Lists */
.msg.bot ul, .msg.bot ol {
    padding-left: 22px;
    margin: 8px 0;
}

.msg.bot li {
    margin: 4px 0;
    line-height: 1.6;
}

.msg.bot ul li::marker { color: var(--primary); }
.msg.bot ol li::marker { color: var(--primary); font-weight: 700; }

/* Blockquote */
.msg.bot blockquote {
    border-left: 3px solid var(--primary);
    margin: 10px 0;
    padding: 8px 14px;
    background: rgba(0, 229, 255, 0.05);
    border-radius: 0 8px 8px 0;
    color: var(--text-sub);
    font-style: italic;
}

/* Horizontal Rule */
.msg.bot hr {
    border: none;
    border-top: 1px solid var(--glass-border-h);
    margin: 14px 0;
}

/* ========================================
   TABLE STYLING — Markdown Tables
======================================== */
.msg.bot .table-wrapper {
    overflow-x: auto; /* Responsive horizontal scroll */
    margin: 12px 0;
    border-radius: var(--radius-md);
    border: 1px solid var(--glass-border-h);
}

.msg.bot table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13.5px;
    min-width: 300px;
}

.msg.bot thead {
    background: rgba(0, 229, 255, 0.1);
}

.msg.bot th {
    padding: 10px 14px;
    text-align: left;
    font-weight: 700;
    color: var(--primary);
    border-bottom: 1px solid var(--glass-border-h);
    white-space: nowrap;
    font-size: 12.5px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.msg.bot td {
    padding: 9px 14px;
    border-bottom: 1px solid var(--glass-border);
    color: var(--text-main);
    vertical-align: top;
}

/* Zebra striping */
.msg.bot tbody tr:nth-child(even) {
    background: rgba(255, 255, 255, 0.025);
}

.msg.bot tbody tr:last-child td {
    border-bottom: none;
}

.msg.bot tbody tr:hover {
    background: rgba(0, 229, 255, 0.05);
    transition: background 0.15s ease;
}

/* ========================================
   CODE BLOCK STYLING
   Dark theme, rounded, scrollable
======================================== */

/* Wrapper with relative positioning for header */
.msg.bot pre.code-block-wrap {
    position: relative;
    background: var(--code-bg) !important;
    border: 1px solid var(--code-border);
    border-radius: var(--radius-md);
    margin: 12px 0;
    overflow: hidden;
    padding: 0 !important; /* Header handles top padding */
}

/* Code block header bar */
.code-block-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 14px;
    background: var(--code-header-bg);
    border-bottom: 1px solid var(--code-border);
}

.code-lang-label {
    font-size: 11px;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    font-family: 'Fira Code', monospace;
}

/* The actual code element */
.msg.bot pre.code-block-wrap code {
    display: block;
    padding: 16px 18px;
    overflow-x: auto;
    font-size: 13px;
    line-height: 1.65;
    font-family: 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
    background: transparent !important;
    color: #e6edf3;
    border-radius: 0;
    border: none;
}

/* Scrollbar for code blocks */
.msg.bot pre.code-block-wrap code::-webkit-scrollbar {
    height: 4px;
}
.msg.bot pre.code-block-wrap code::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.12);
    border-radius: 4px;
}

/* ========================================
   COPY CODE BUTTON — Glassmorphism style
======================================== */
.copy-code-btn {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--glass-border-h);
    color: var(--text-sub);
    padding: 4px 10px;
    border-radius: 8px;
    font-size: 11.5px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 5px;
    transition: var(--transition);
    font-family: inherit;
    white-space: nowrap;
    flex-shrink: 0;
}

.copy-code-btn:hover {
    background: rgba(0, 229, 255, 0.12);
    border-color: rgba(0, 229, 255, 0.3);
    color: var(--primary);
}

.copy-code-btn i { font-size: 10px; }

/* ========================================
   MESSAGE ACTION BAR — Copy Response
======================================== */
.msg-actions {
    display: flex;
    gap: 8px;
    margin-top: 10px;
    padding-top: 10px;
    border-top: 1px solid var(--glass-border);
    flex-wrap: wrap;
}

.msg-action-btn {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--glass-border);
    color: var(--text-muted);
    padding: 5px 12px;
    border-radius: var(--radius-xl);
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition);
    font-family: inherit;
}

.msg-action-btn:hover {
    background: var(--primary-dim);
    border-color: rgba(0, 229, 255, 0.25);
    color: var(--primary);
    transform: translateY(-1px);
}

.msg-action-btn i { font-size: 11px; }

/* ========== INPUT SECTION ========== */
.input-section {
    padding: 0 24px 20px;
    flex-shrink: 0;
}

/* ---- File Preview Bar ---- */
.file-preview-bar {
    display: none;
    margin-bottom: 10px;
    animation: slideDown 0.3s ease;
}

.file-preview-bar.show { display: block; }

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-8px); }
    to   { opacity: 1; transform: translateY(0); }
}

.file-chip {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    background: rgba(14, 20, 34, 0.7);
    border: 1px solid var(--glass-border-h);
    border-radius: var(--radius-md);
    backdrop-filter: blur(12px);
}

.file-chip-icon {
    width: 36px; height: 36px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    flex-shrink: 0;
}

.file-chip-icon.image { background: var(--primary-dim);      color: var(--primary);    }
.file-chip-icon.pdf   { background: rgba(244,63,94,0.12);    color: var(--accent-red); }
.file-chip-icon.txt   { background: var(--secondary-dim);    color: var(--secondary);  }

.file-chip-info { flex: 1; min-width: 0; }

.file-chip-name {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-main);
    display: block;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.file-chip-status {
    font-size: 11px;
    color: var(--text-muted);
    display: block;
    margin-top: 2px;
}

.file-chip-remove {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 5px;
    border-radius: 6px;
    font-size: 13px;
    transition: var(--transition);
    line-height: 1;
    flex-shrink: 0;
}

.file-chip-remove:hover { color: var(--accent-red); background: rgba(244,63,94,0.1); }

/* OCR Progress Bar */
.ocr-progress-bar {
    height: 3px;
    background: rgba(255,255,255,0.05);
    border-radius: 4px;
    margin-top: 6px;
    overflow: hidden;
    display: none;
}

.ocr-progress-bar.show { display: block; }

.ocr-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius: 4px;
    width: 0%;
    transition: width 0.4s ease;
    position: relative;
}

.ocr-progress-fill::after {
    content: '';
    position: absolute;
    top: 0; right: 0;
    width: 60px; height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4));
    animation: shimmer 1s infinite;
}

@keyframes shimmer {
    from { opacity: 0; }
    50%  { opacity: 1; }
    to   { opacity: 0; }
}

/* ---- Input Bar ---- */
.input-container {}

.input-bar {
    display: flex;
    align-items: flex-end;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border-h);
    border-radius: var(--radius-xl);
    padding: 10px 12px 10px 10px;
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-md), inset 0 1px 0 rgba(255,255,255,0.05);
    transition: border-color 0.25s ease, box-shadow 0.25s ease;
    gap: 4px;
}

.input-bar:focus-within {
    border-color: rgba(0, 229, 255, 0.3);
    box-shadow: var(--shadow-md), 0 0 0 3px rgba(0, 229, 255, 0.06), inset 0 1px 0 rgba(255,255,255,0.05);
}

#inputBox {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-main);
    font-size: 14.5px;
    font-family: inherit;
    resize: none;
    outline: none;
    max-height: 130px;
    min-height: 26px;
    padding: 6px 4px;
    line-height: 1.55;
    align-self: flex-end;
}

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

/* ---- Icon Action Buttons ---- */
.icon-action-btn {
    width: 38px; height: 38px;
    border-radius: 50%;
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    transition: var(--transition);
    flex-shrink: 0;
    position: relative;
    font-family: inherit;
}

.icon-action-btn:hover {
    color: var(--text-main);
    background: var(--glass-bg-light);
    border-color: var(--glass-border);
}

.attach-btn:hover { color: var(--primary); }

/* Mic Button */
.mic-btn { overflow: visible; }

.mic-btn.recording {
    color: #fff;
    background: var(--accent-red);
    border-color: transparent;
    animation: micPulse 1.2s infinite;
}

.mic-btn.recording .mic-ring {
    position: absolute;
    inset: -6px;
    border-radius: 50%;
    border: 2px solid rgba(244, 63, 94, 0.5);
    animation: micRing 1.2s infinite;
    pointer-events: none;
}

@keyframes micPulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(244, 63, 94, 0.5); }
    50%       { box-shadow: 0 0 0 8px rgba(244, 63, 94, 0); }
}

@keyframes micRing {
    0%   { transform: scale(1);   opacity: 0.7; }
    100% { transform: scale(1.5); opacity: 0;   }
}

/* Send Button */
.action-buttons {
    display: flex;
    align-items: center;
    gap: 5px;
    flex-shrink: 0;
}

.send-btn {
    width: 40px; height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), #007BFF);
    border: none;
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    transition: var(--transition);
    box-shadow: 0 4px 16px rgba(0, 180, 255, 0.35);
    flex-shrink: 0;
}

.send-btn:hover {
    transform: scale(1.08);
    box-shadow: 0 6px 22px rgba(0, 200, 255, 0.5);
}

.send-btn:disabled {
    background: rgba(255,255,255,0.08);
    box-shadow: none;
    cursor: not-allowed;
    transform: none;
    color: var(--text-muted);
}

.disclaimer {
    text-align: center;
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 10px;
}

/* ---- Icon Buttons (sidebar) ---- */
.icon-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 17px;
    cursor: pointer;
    transition: var(--transition);
    padding: 8px;
    border-radius: 8px;
    line-height: 1;
}

.icon-btn:hover {
    color: var(--text-main);
    background: var(--glass-bg-light);
}

/* ========== TOAST ========== */
.toast {
    position: fixed;
    bottom: 90px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: rgba(14, 20, 34, 0.92);
    border: 1px solid var(--glass-border-h);
    backdrop-filter: blur(16px);
    color: var(--text-main);
    padding: 10px 18px;
    border-radius: var(--radius-xl);
    font-size: 13px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
    box-shadow: var(--shadow-md);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease, transform 0.3s ease;
    z-index: 9999;
    white-space: nowrap;
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.toast i { color: var(--primary); }

/* ========== SCROLLBAR ========== */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.08);
    border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.15); }

/* ========== ANIMATIONS ========== */
@keyframes popIn {
    to { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes fadeSlideUp {
    from { opacity: 0; transform: translateY(16px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ========== MOBILE RESPONSIVE ========== */
@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        top: 0; left: 0; bottom: 0;
        transform: translateX(-100%);
        z-index: 200;
    }

    .sidebar.open { transform: translateX(0); }
    .sidebar-overlay.show { display: block; }
    .mobile-menu-btn { display: flex; }

    .chat-header { padding: 0 16px; }

    .chat-display { padding: 18px 16px; }

    .input-section { padding: 0 14px 16px; }

    .msg { max-width: 88%; }

    .feature-pills { gap: 6px; }
    .pill { font-size: 11px; padding: 5px 10px; }

    /* Smaller code blocks on mobile */
    .msg.bot pre.code-block-wrap code {
        font-size: 12px;
        padding: 12px 14px;
    }

    /* Table scrolls on mobile */
    .msg.bot .table-wrapper {
        max-width: calc(88vw - 48px);
    }
}

@media (max-width: 480px) {
    .msg { max-width: 94%; font-size: 14px; }
    .welcome-screen h1 { font-size: 19px; }
    .send-btn, .icon-action-btn { width: 36px; height: 36px; }
    .msg-actions { gap: 6px; }
    .msg-action-btn { font-size: 11px; padding: 4px 10px; }
}
/* ============================================================
   Shanu AI v3 — APPEND THIS TO THE END OF style.css
   New: Multi-file chips, Chart wrap, Preview Modal, Action pills
   ============================================================ */

/* ---- Multi-File List ---- */
.multi-file-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 4px;
}

.multi-file-list .file-chip {
    animation: slideDown 0.2s ease both;
}

/* File type icon overrides */
.file-chip-icon.code {
    background: rgba(99, 102, 241, 0.12);
    color: var(--secondary);
}

/* ---- Chart Container (appears as a bot message) ---- */
.chart-wrap {
    align-self: flex-start;
    background: var(--bot-msg);
    border: 1px solid var(--glass-border);
    border-radius: 18px;
    border-bottom-left-radius: 4px;
    padding: 16px;
    max-width: 520px;
    width: 95%;
    margin-bottom: 16px;
    backdrop-filter: blur(12px);
    box-shadow: var(--shadow-sm);
    animation: popIn 0.35s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
    opacity: 0;
}

.chart-wrap-label {
    font-size: 10.5px;
    color: var(--text-muted);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 6px;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
}

/* ---- Action Result Pill (shown after PDF/PPT/Preview) ---- */
.action-result-pill {
    align-self: flex-start;
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 7px 16px;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.22);
    border-radius: var(--radius-xl);
    font-size: 12px;
    font-weight: 600;
    color: var(--accent-green);
    margin-bottom: 14px;
    animation: fadeSlideUp 0.3s ease both;
}

.action-result-pill i { font-size: 11px; }

/* ---- Live Preview Modal ---- */
.preview-modal {
    position: fixed;
    inset: 0;
    z-index: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.preview-modal.show {
    opacity: 1;
    pointer-events: all;
}

.preview-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.78);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.preview-modal-inner {
    position: relative;
    width: 100%;
    max-width: 960px;
    height: 87vh;
    display: flex;
    flex-direction: column;
    background: rgba(8, 12, 24, 0.95);
    border: 1px solid var(--glass-border-h);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg), 0 0 0 1px rgba(0,229,255,0.06);
    transform: translateY(20px) scale(0.97);
    transition: transform 0.35s cubic-bezier(0.175, 0.885, 0.32, 1.275),
                opacity 0.35s ease;
    opacity: 0;
}

.preview-modal.show .preview-modal-inner {
    transform: translateY(0) scale(1);
    opacity: 1;
}

.preview-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 13px 18px;
    border-bottom: 1px solid var(--glass-border);
    flex-shrink: 0;
    background: rgba(0,0,0,0.2);
}

.preview-modal-title {
    display: flex;
    align-items: center;
    gap: 9px;
    font-size: 13.5px;
    font-weight: 700;
    color: var(--text-main);
}

.preview-badge {
    font-size: 10px;
    font-weight: 600;
    padding: 2px 8px;
    background: var(--primary-dim);
    color: var(--primary);
    border-radius: 20px;
    letter-spacing: 0.4px;
    border: 1px solid rgba(0,229,255,0.2);
}

.preview-modal-actions {
    display: flex;
    gap: 2px;
}

.preview-frame-wrap {
    flex: 1;
    overflow: hidden;
    background: #ffffff;
    position: relative;
}

#previewFrame {
    width: 100%;
    height: 100%;
    border: none;
    display: block;
}

/* ---- Inline code in bot messages ---- */
.msg.bot code {
    background: rgba(0, 229, 255, 0.08);
    border: 1px solid rgba(0, 229, 255, 0.12);
    border-radius: 5px;
    padding: 1px 5px;
    font-family: 'Courier New', monospace;
    font-size: 12.5px;
    color: var(--primary);
}

/* ---- Processing status badge in chip ---- */
.file-chip-status.processing {
    color: var(--primary);
    animation: statusBlink 1s infinite;
}

.file-chip-status.done { color: var(--accent-green); }
.file-chip-status.error { color: var(--accent-red); }

@keyframes statusBlink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* ---- Mobile adjustments ---- */
@media (max-width: 768px) {
    .preview-modal {
        padding: 0;
        align-items: flex-end;
    }

    .preview-modal-inner {
        height: 90vh;
        max-width: 100%;
        border-radius: var(--radius-lg) var(--radius-lg) 0 0;
        border-bottom: none;
    }

    .chart-wrap {
        max-width: 100%;
        width: 100%;
    }
   }
/* ============================================================
   Shanu AI v3 — APPEND THIS TO THE END OF style.css
   New: Multi-file chips, Chart wrap, Preview Modal, Action pills
   ============================================================ */
/* ============================================================
   Shanu AI v4 — CSS PATCH
   INSTRUCTIONS: Paste this at the very END of your style.css.
   First DELETE any existing blocks for: .multi-file-list,
   .chart-wrap, .preview-modal, .action-result-pill
   (They may appear twice from previous style-additions.css paste)
   ============================================================ */

/* ── Multi-File List ─────────────────────────────────────── */
.multi-file-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 6px;
}

.file-chip-icon.code {
    background: rgba(99, 102, 241, 0.12);
    color: var(--secondary);
}

.file-chip-status.processing { color: var(--primary); animation: statusBlink 1s infinite; }
.file-chip-status.done       { color: var(--accent-green); }
.file-chip-status.error      { color: var(--accent-red); }

@keyframes statusBlink {
    0%, 100% { opacity: 1; }
    50%       { opacity: 0.45; }
}

/* ── Chart Container ─────────────────────────────────────── */
.chart-wrap {
    align-self: flex-start;
    background: var(--bot-msg);
    border: 1px solid var(--glass-border);
    border-radius: 18px;
    border-bottom-left-radius: 4px;
    padding: 16px;
    max-width: 520px;
    width: 95%;
    margin-bottom: 16px;
    backdrop-filter: blur(12px);
    box-shadow: var(--shadow-sm);
    animation: popIn 0.35s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
    opacity: 0;
}

.chart-wrap-label {
    font-size: 10.5px;
    color: var(--text-muted);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 6px;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
}

/* ── Action Result Pill ──────────────────────────────────── */
.action-result-pill {
    align-self: flex-start;
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 7px 16px;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.22);
    border-radius: var(--radius-xl);
    font-size: 12px;
    font-weight: 600;
    color: var(--accent-green);
    margin-bottom: 14px;
    animation: fadeSlideUp 0.3s ease both;
}

/* ── Live Preview Modal ──────────────────────────────────── */
.preview-modal {
    position: fixed;
    inset: 0;
    z-index: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.preview-modal.show {
    opacity: 1;
    pointer-events: all;
}

.preview-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.78);
    backdrop-filter: blur(10px);
}

.preview-modal-inner {
    position: relative;
    width: 100%;
    max-width: 960px;
    height: 87vh;
    display: flex;
    flex-direction: column;
    background: rgba(8, 12, 24, 0.96);
    border: 1px solid var(--glass-border-h);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transform: translateY(20px) scale(0.97);
    transition: transform 0.35s cubic-bezier(0.175, 0.885, 0.32, 1.275), opacity 0.35s ease;
    opacity: 0;
}

.preview-modal.show .preview-modal-inner {
    transform: translateY(0) scale(1);
    opacity: 1;
}

.preview-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 13px 18px;
    border-bottom: 1px solid var(--glass-border);
    flex-shrink: 0;
    background: rgba(0, 0, 0, 0.2);
}

.preview-modal-title {
    display: flex;
    align-items: center;
    gap: 9px;
    font-size: 13.5px;
    font-weight: 700;
    color: var(--text-main);
}

.preview-badge {
    font-size: 10px;
    font-weight: 600;
    padding: 2px 8px;
    background: var(--primary-dim);
    color: var(--primary);
    border-radius: 20px;
    letter-spacing: 0.4px;
    border: 1px solid rgba(0, 229, 255, 0.2);
}

.preview-modal-actions { display: flex; gap: 2px; }

.preview-frame-wrap {
    flex: 1;
    overflow: hidden;
    background: #ffffff;
}

#previewFrame {
    width: 100%;
    height: 100%;
    border: none;
    display: block;
}

/* ── Bot message markdown styling ────────────────────────── */
/* Tables from marked.js */
.msg.bot table {
    width: 100%;
    border-collapse: collapse;
    margin: 10px 0;
    font-size: 13px;
}

.msg.bot th,
.msg.bot td {
    padding: 7px 12px;
    border: 1px solid var(--glass-border-h);
    text-align: left;
}

.msg.bot th {
    background: var(--primary-dim);
    color: var(--primary);
    font-weight: 700;
}

.msg.bot tr:nth-child(even) td {
    background: rgba(255, 255, 255, 0.02);
}

/* Bullet & numbered lists */
.msg.bot ul,
.msg.bot ol {
    padding-left: 20px;
    margin: 6px 0;
}

.msg.bot li { margin: 3px 0; line-height: 1.6; }

.msg.bot ul li::marker { color: var(--primary); }
.msg.bot ol li::marker { color: var(--primary); font-weight: 700; }

/* Blockquotes */
.msg.bot blockquote {
    border-left: 3px solid var(--primary);
    margin: 8px 0;
    padding: 6px 14px;
    background: var(--primary-dim);
    border-radius: 0 8px 8px 0;
    color: var(--text-sub);
    font-style: italic;
}

/* Headings inside bot messages */
.msg.bot h1, .msg.bot h2, .msg.bot h3,
.msg.bot h4, .msg.bot h5, .msg.bot h6 {
    color: var(--text-main);
    margin: 10px 0 4px;
    font-weight: 700;
    line-height: 1.3;
}

.msg.bot h1 { font-size: 18px; }
.msg.bot h2 { font-size: 16px; }
.msg.bot h3 { font-size: 14.5px; }
.msg.bot h4, .msg.bot h5, .msg.bot h6 { font-size: 13.5px; }

/* Links */
.msg.bot a {
    color: var(--primary);
    text-decoration: underline;
    text-decoration-color: rgba(0, 229, 255, 0.35);
    text-underline-offset: 2px;
}

/* ── Mobile adjustments ──────────────────────────────────── */
@media (max-width: 768px) {
    .preview-modal { padding: 0; align-items: flex-end; }
    .preview-modal-inner { height: 90vh; max-width: 100%; border-radius: var(--radius-lg) var(--radius-lg) 0 0; }
    .chart-wrap { max-width: 100%; width: 100%; }
    .msg.bot table { font-size: 11.5px; }
    .msg.bot th, .msg.bot td { padding: 5px 8px; }
       }