/* ═══════════════════════════════════════════════════════════════
   VYOMA AI — ThinkAI Homepage Layout v2.1
   
   Balanced layout: content up top, input centered, aura glow.
   Clean, minimal, no heavy decorations.
   ═══════════════════════════════════════════════════════════════ */

/* ─── HOMEPAGE MODE — balanced vertical distribution ── */
.main-area:has(.welcome-screen:not(.hidden)) {
    display: flex !important;
    flex-direction: column !important;
    height: calc(var(--vh, 1vh) * 100) !important;
    justify-content: flex-start !important;
    align-items: center !important;
    overflow: hidden !important;
    position: relative !important;
}

/* ─── TOP AURA — subtle radial glow from the top ── */
.main-area:has(.welcome-screen:not(.hidden))::before {
    content: '' !important;
    position: absolute !important;
    top: -120px !important;
    left: 50% !important;
    transform: translateX(-50%) !important;
    width: 900px !important;
    height: 500px !important;
    background: radial-gradient(ellipse at center top,
            var(--aura-color, rgba(255, 255, 255, 0.06)) 0%,
            transparent 70%) !important;
    pointer-events: none !important;
    z-index: 0 !important;
}

/* Dark mode aura */
:root.dark .main-area:has(.welcome-screen:not(.hidden))::before,
:root:not(.light) .main-area:has(.welcome-screen:not(.hidden))::before {
    --aura-color: rgba(255, 255, 255, 0.05);
}

/* Light mode aura */
:root.light .main-area:has(.welcome-screen:not(.hidden))::before {
    --aura-color: rgba(0, 0, 0, 0.025);
}

/* Header — minimal transparent bar */
.main-area:has(.welcome-screen:not(.hidden)) .main-header {
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    z-index: 50 !important;
    border-bottom: none !important;
    background: transparent !important;
    box-shadow: none !important;
}

/* Messages container — takes only as much height as the welcome content needs */
.main-area:has(.welcome-screen:not(.hidden)) .messages-container {
    display: flex !important;
    flex-direction: column !important;
    justify-content: flex-end !important;
    align-items: center !important;
    flex: 0 0 auto !important;
    overflow: visible !important;
    padding: 0 !important;
    padding-top: 60px !important;
    z-index: 1 !important;
}

/* Input bar — margin-top:auto eats all remaining space above, 
   pushing input+pills+disclaimer to the lower-center area */
.main-area:has(.welcome-screen:not(.hidden)) .input-bar {
    position: relative !important;
    width: 100% !important;
    max-width: 760px !important;
    margin: auto !important;
    padding: 12px 24px !important;
    background: transparent !important;
    border: none !important;
    box-shadow: none !important;
    z-index: 10 !important;
    flex-shrink: 0 !important;
}

/* Scroll-to-bottom — hide on home */
.main-area:has(.welcome-screen:not(.hidden)) .scroll-down-btn {
    display: none !important;
}

/* ─── WELCOME SCREEN — UPPER AREA ─────────────────────────── */

.welcome-screen {
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    justify-content: flex-end !important;
    text-align: center !important;
    padding: 0 24px !important;
    width: 100% !important;
    max-width: 900px !important;
    margin: 0 auto 32px !important;
    min-height: auto !important;
    position: relative !important;
    overflow: visible !important;
    isolation: auto !important;
    background: transparent !important;
    z-index: 1 !important;
}

/* [FIX] Welcome screen must hide when .hidden is added (after first message) */
.welcome-screen.hidden {
    display: none !important;
}

/* Logo wrapper — clean */
.welcome-screen .hero-logo-wrapper {
    margin-bottom: 24px !important;
    position: relative !important;
    inset: auto !important;
    width: 48px !important;
    height: 48px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
}

.hero-logo-img,
.welcome-logo-img {
    width: 48px !important;
    height: 48px !important;
    border-radius: 12px !important;
    filter: none !important;
    box-shadow: none !important;
}

.hero-logo-ring {
    display: none !important;
}

/* Greeting */
.welcome-screen .hero-headline {
    font-size: 32px !important;
    font-weight: 600 !important;
    color: var(--text-primary) !important;
    letter-spacing: -0.02em !important;
    line-height: 1.3 !important;
    margin-bottom: 8px !important;
    background: none !important;
    background-clip: unset !important;
    -webkit-background-clip: unset !important;
    -webkit-text-fill-color: unset !important;
    text-shadow: none !important;
}

.welcome-screen .hero-subtitle {
    font-size: 15px !important;
    color: var(--text-muted) !important;
    margin-bottom: 32px !important;
    max-width: 480px !important;
    line-height: 1.5 !important;
    background: none !important;
    background-clip: unset !important;
    -webkit-background-clip: unset !important;
    -webkit-text-fill-color: unset !important;
}

/* Suggestion Chips — Responsive grid: desktop 4 cols, tablet 2 cols (see media queries) */
.welcome-screen .suggestions,
.welcome-screen .hero-suggestions {
    display: grid !important;
    grid-template-columns: repeat(4, minmax(260px, 1fr)) !important;
    gap: 18px !important;
    justify-content: center !important;
    max-width: 100% !important;
    margin-bottom: 24px !important;
    padding: 0 16px !important;
}

.welcome-screen .suggestions::-webkit-scrollbar,
.welcome-screen .hero-suggestions::-webkit-scrollbar {
    display: none !important;
}

.welcome-screen .suggestion-chip,
.welcome-screen .hero-chip {
    min-width: 260px !important;
    width: 100% !important;
    max-width: 100% !important;
    padding: 14px 18px !important;
    background: var(--bg-surface) !important;
    border: 1px solid var(--border) !important;
    border-radius: 14px !important;
    color: var(--text-secondary) !important;
    text-align: left !important;
    cursor: pointer !important;
    transition: all 0.15s ease !important;
    box-shadow: none !important;
}

.welcome-screen .suggestion-chip:hover,
.welcome-screen .hero-chip:hover {
    background: var(--bg-surface-hover) !important;
    border-color: var(--border-hover) !important;
    color: var(--text-primary) !important;
    transform: none !important;
    box-shadow: none !important;
}

/* ═══════════════════════════════════════════════════════════════
   INPUT — LARGE CENTERED INPUT BOX
   ═══════════════════════════════════════════════════════════════ */

.main-area:has(.welcome-screen:not(.hidden)) .input-wrapper {
    background: var(--bg-input) !important;
    border: 1px solid var(--border) !important;
    border-radius: 16px !important;
    padding: 14px 16px !important;
    max-width: 100% !important;
    box-shadow: none !important;
    transition: border-color 0.15s ease !important;
}

.main-area:has(.welcome-screen:not(.hidden)) .input-wrapper:focus-within {
    border-color: var(--border-hover) !important;
    box-shadow: none !important;
}

.main-area:has(.welcome-screen:not(.hidden)) .input-wrapper textarea,
.main-area:has(.welcome-screen:not(.hidden)) #message-input {
    font-size: 16px !important;
}

.main-area:has(.welcome-screen:not(.hidden)) .input-wrapper textarea::placeholder,
.main-area:has(.welcome-screen:not(.hidden)) #message-input::placeholder {
    color: var(--text-muted) !important;
    font-size: 16px !important;
}

/* ═══════════════════════════════════════════════════════════════
   SQM PILLS — ACTION BUTTONS BELOW INPUT
   ═══════════════════════════════════════════════════════════════ */

.main-area:has(.welcome-screen:not(.hidden)) .sqm-bar {
    max-width: 760px !important;
    margin: 10px auto 0 auto !important;
    padding: 0 !important;
    background: transparent !important;
    border: none !important;
    box-shadow: none !important;
    justify-content: center !important;
    flex-shrink: 0 !important;
    z-index: 10 !important;
}

.main-area:has(.welcome-screen:not(.hidden)) .sqm-scroll {
    justify-content: center !important;
    gap: 8px !important;
}

.main-area:has(.welcome-screen:not(.hidden)) .sqm-pill {
    background: transparent !important;
    border: 1px solid var(--border) !important;
    border-radius: 20px !important;
    color: var(--text-muted) !important;
    font-size: 12px !important;
    padding: 6px 14px !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    box-shadow: none !important;
    transform: none !important;
}

.main-area:has(.welcome-screen:not(.hidden)) .sqm-pill::after {
    display: none !important;
}

.main-area:has(.welcome-screen:not(.hidden)) .sqm-pill:hover {
    background: var(--bg-surface-hover) !important;
    border-color: var(--border-hover) !important;
    color: var(--text-primary) !important;
    transform: none !important;
    box-shadow: none !important;
}

.main-area:has(.welcome-screen:not(.hidden)) .sqm-pill.active {
    background: var(--bg-surface-hover) !important;
    border-color: var(--border-hover) !important;
    color: var(--text-primary) !important;
}

/* Auto label & Suggestions */
.main-area:has(.welcome-screen:not(.hidden)) .sqm-auto-label {
    max-width: 760px !important;
    margin: 0 auto !important;
    padding: 0 !important;
    justify-content: center !important;
}

.main-area:has(.welcome-screen:not(.hidden)) .sqm-suggestions {
    max-width: 760px !important;
    margin: 10px auto 0 !important;
    padding: 0 !important;
    justify-content: center !important;
}

.main-area:has(.welcome-screen:not(.hidden)) .sqm-suggestions .sqm-suggestion-btn {
    background: var(--bg-surface) !important;
    border: 1px solid var(--border) !important;
    border-radius: 10px !important;
    color: var(--text-muted) !important;
    box-shadow: none !important;
}

.main-area:has(.welcome-screen:not(.hidden)) .sqm-suggestions .sqm-suggestion-btn:hover {
    background: var(--bg-surface-hover) !important;
    border-color: var(--border-hover) !important;
    color: var(--text-primary) !important;
}

/* ═══════════════════════════════════════════════════════════════
   HIDE EXTRA PROMPTS ON HOMEPAGE
   Only the 4 hero suggestion cards + mode pills should be visible.
   ═══════════════════════════════════════════════════════════════ */

.main-area:has(.welcome-screen:not(.hidden)) .random-suggestions,
.main-area:has(.welcome-screen:not(.hidden)) .sqm-suggestions,
.main-area:has(.welcome-screen:not(.hidden)) .sqm-auto-label {
    display: none !important;
}

/* ═══════════════════════════════════════════════════════════════
   DISCLAIMER
   ═══════════════════════════════════════════════════════════════ */

.main-area:has(.welcome-screen:not(.hidden)) .input-disclaimer {
    max-width: 760px !important;
    width: 100% !important;
    margin: 8px auto 16px auto !important;
    text-align: center !important;
    color: var(--text-faint) !important;
    font-size: 11px !important;
    flex-shrink: 0 !important;
    z-index: 10 !important;
}

.main-area:has(.welcome-screen:not(.hidden)) .file-preview-bar.hidden {
    display: none !important;
}

/* ═══════════════════════════════════════════════════════════════
   FAST MESSAGE RENDERING
   ═══════════════════════════════════════════════════════════════ */

.message {
    animation: msgFade 150ms ease-out !important;
}

.message.vyoma-fade-in {
    animation: vyomaFadeIn 150ms ease-out !important;
}

@keyframes vyomaFadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes msgFade {
    from {
        opacity: 0;
        transform: translateY(4px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.akira-typing-cursor {
    display: none !important;
}

/* ═══════════════════════════════════════════════════════════════
   RANDOM SUGGESTIONS — Dynamic prompt cards
   ═══════════════════════════════════════════════════════════════ */

.random-suggestions {
    max-width: 760px !important;
    width: 100% !important;
    display: flex !important;
    flex-wrap: wrap !important;
    gap: 10px !important;
    margin-top: 16px !important;
    justify-content: center !important;
}

.random-suggestions.hidden {
    display: none !important;
}

.rs-chip {
    display: flex !important;
    align-items: center !important;
    gap: 10px !important;
    background: var(--bg-surface) !important;
    border: 1px solid var(--border) !important;
    border-radius: 12px !important;
    padding: 12px 14px !important;
    color: var(--text-muted) !important;
    font-family: 'Inter', system-ui, -apple-system, sans-serif !important;
    font-size: 14px !important;
    font-weight: 400 !important;
    cursor: pointer !important;
    transition: all 0.15s ease !important;
    text-align: left !important;
    line-height: 1.4 !important;
    flex: 0 1 auto !important;
    max-width: 100% !important;
}

.rs-chip:hover {
    background: var(--bg-surface-hover) !important;
    border-color: var(--border-hover) !important;
    color: var(--text-primary) !important;
}

.rs-chip:active {
    background: var(--bg-surface-hover) !important;
    transform: scale(0.98) !important;
}

.rs-chip-text {
    flex: 1 !important;
    min-width: 0 !important;
    overflow: hidden !important;
    text-overflow: ellipsis !important;
    white-space: nowrap !important;
}

.rs-chip-arrow {
    width: 14px !important;
    height: 14px !important;
    flex-shrink: 0 !important;
    opacity: 0 !important;
    transition: opacity 0.15s ease, transform 0.15s ease !important;
    color: var(--text-muted) !important;
}

.rs-chip:hover .rs-chip-arrow {
    opacity: 1 !important;
    transform: translateX(2px) !important;
}

/* Hide random suggestions when not on home */
.main-area:has(.welcome-screen.hidden) .random-suggestions {
    display: none !important;
}

/* ═══════════════════════════════════════════════════════════════
   KILL REMAINING DECORATION
   ═══════════════════════════════════════════════════════════════ */

.welcome-screen [class*="glow"],
.welcome-screen [class*="ring"],
.welcome-screen [class*="particle"],
.welcome-screen [class*="shimmer"],
.welcome-screen [class*="aurora"] {
    display: none !important;
    opacity: 0 !important;
    visibility: hidden !important;
}

/* ═══════════════════════════════════════════════════════════════
   GENERATING LOCK BANNER
   ═══════════════════════════════════════════════════════════════ */

.generating-lock-banner {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 0 0 8px 0;
    padding: 10px 16px;
    background: rgba(234, 179, 8, 0.08);
    border: 1px solid rgba(234, 179, 8, 0.25);
    border-radius: 10px;
    color: #d4a017;
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.01em;
    animation: glbSlideIn 200ms ease-out;
    overflow: hidden;
}

.generating-lock-banner.hidden {
    display: none;
}

.generating-lock-banner svg {
    flex-shrink: 0;
    width: 15px;
    height: 15px;
    color: #d4a017;
    animation: glbPulse 1.4s ease-in-out infinite;
}

.glb-label {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

@keyframes glbSlideIn {
    from {
        opacity: 0;
        transform: translateY(-6px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes glbPulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.4;
    }
}

/* ═══════════════════════════════════════════════════════════════
   RESPONSIVE — Tablet (2 rows) & Mobile
   ═══════════════════════════════════════════════════════════════ */

/* Tablet: 2x2 grid for prompt cards */
@media (min-width: 768px) and (max-width: 1023px) {
    .welcome-screen .suggestions,
    .welcome-screen .hero-suggestions {
        grid-template-columns: repeat(2, minmax(260px, 1fr)) !important;
        gap: 18px !important;
    }

    .welcome-screen .suggestion-chip,
    .welcome-screen .hero-chip {
        min-width: 0 !important;
    }
}

@media (max-width: 768px) {
    .welcome-screen {
        padding-left: 16px !important;
        padding-right: 16px !important;
    }

    .hero-headline {
        font-size: 26px !important;
    }

    .hero-logo-wrapper {
        width: 40px !important;
        height: 40px !important;
        margin-bottom: 20px !important;
    }

    .hero-logo-img,
    .welcome-logo-img {
        width: 40px !important;
        height: 40px !important;
    }

    /* Mobile: single column — overridden by mobile-enhancements.css for full vertical stack */
    .welcome-screen .hero-suggestions {
        gap: 16px !important;
    }

    .welcome-screen .hero-chip,
    .welcome-screen .suggestion-chip {
        padding: 12px 16px !important;
        font-size: 13px !important;
        border-radius: 12px !important;
    }

    .main-area:has(.welcome-screen:not(.hidden)) .sqm-scroll {
        gap: 6px !important;
    }

    .main-area:has(.welcome-screen:not(.hidden)) .sqm-pill {
        padding: 5px 12px !important;
        font-size: 11px !important;
    }

    .random-suggestions {
        gap: 8px !important;
        margin-top: 14px !important;
        padding: 0 16px !important;
    }

    .rs-chip {
        padding: 10px 12px !important;
        font-size: 13px !important;
        border-radius: 10px !important;
    }
}

@media (max-width: 480px) {
    .hero-headline {
        font-size: 22px !important;
    }

    .hero-logo-wrapper {
        width: 36px !important;
        height: 36px !important;
        margin-bottom: 16px !important;
    }

    .hero-logo-img,
    .welcome-logo-img {
        width: 36px !important;
        height: 36px !important;
    }

    .hero-subtitle {
        font-size: 13px !important;
        margin-bottom: 24px !important;
    }

    .welcome-screen .hero-suggestions {
        gap: 10px !important;
        justify-content: flex-start !important;
    }

    .welcome-screen .hero-chip,
    .welcome-screen .suggestion-chip {
        flex: 0 0 160px !important;
        width: 160px !important;
        min-width: 160px !important;
        max-width: 160px !important;
    }

    .random-suggestions {
        gap: 6px !important;
        margin-top: 12px !important;
        padding: 0 12px !important;
        flex-direction: column !important;
    }

    .rs-chip {
        padding: 10px 12px !important;
        font-size: 12.5px !important;
        width: 100% !important;
        max-width: 100% !important;
    }

    .rs-chip-text {
        white-space: normal !important;
    }

    .rs-chip-arrow {
        opacity: 0.5 !important;
    }

    .main-area:has(.welcome-screen:not(.hidden)) .input-bar {
        padding: 0 12px !important;
    }
}

/* ═══════════════════════════════════════════════════════════════
   SIDEBAR TRANSITION — smooth expand/collapse
   ═══════════════════════════════════════════════════════════════ */

.sidebar {
    transition: width 0.25s cubic-bezier(0.4, 0, 0.2, 1) !important;
}

/* When sidebar is hidden on mobile, handle properly */
@media (max-width: 768px) {
    .sidebar.collapsed {
        width: 0 !important;
        min-width: 0 !important;
        padding: 0 !important;
        border: none !important;
    }
}