/* -------------------------------------------------------------------------
   MICRO-ANIMATIONS & TRANSITIONS
   Subtle, fast (150-300ms), performance-optimized with GPU acceleration
   ------------------------------------------------------------------------- */

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

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

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes messageInSent {
    from {
        opacity: 0;
        transform: translateY(12px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes messageInReceived {
    from {
        opacity: 0;
        transform: translateY(12px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes typingPulse {
    0%, 60%, 100% {
        transform: translateY(0);
        opacity: 0.4;
    }
    30% {
        transform: translateY(-5px);
        opacity: 1;
    }
}

@keyframes toastSlideIn {
    from {
        opacity: 0;
        transform: translateY(24px) scale(0.96);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes toastSlideOut {
    from {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
    to {
        opacity: 0;
        transform: translateY(24px) scale(0.96);
    }
}

@keyframes pulseOnline {
    0% {
        box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.7);
    }
    70% {
        box-shadow: 0 0 0 6px rgba(34, 197, 94, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(34, 197, 94, 0);
    }
}

@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }
    100% {
        background-position: 200% 0;
    }
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* -------------------------------------------------------------------------
   FRANK 8-STEP LOGO ENTRANCE ANIMATION SYSTEM
   Think
   Sequence:
   Step 1: Light streak appears
   Step 2: F symbol begins drawing (spine + speech notch)
   Step 3: F shape completes (top & mid chat beams)
   Step 4: Gradient blooms (Blue -> Cyan -> Violet -> Magenta)
   Step 5: Subtle glow & spark dot appear
   Step 6: "FRANK" wordmark appears (opacity 0->1, translateY 10px->0)
   Step 7: Tagline "Think" appears (fade-up)
   Step 8: Settles into final pristine state (~2.2s total duration)
   ------------------------------------------------------------------------- */

.frank-logo-anim-stage {
    position: relative;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 24px;
    user-select: none;
    overflow: visible;
}

/* STEP 1: Light Streak Sweeping Across Stage */
.frank-light-streak {
    position: absolute;
    top: 36%;
    left: 50%;
    width: 140px;
    height: 3px;
    border-radius: 9999px;
    background: linear-gradient(90deg, transparent, #3B82F6, #8B5CF6, #22D3EE, #D946EF, transparent);
    filter: drop-shadow(0 0 8px rgba(34, 211, 238, 0.9));
    pointer-events: none;
    z-index: 3;
    opacity: 0;
    transform: translate(-50%, -50%) scaleX(0.2);
    animation: frankLightStreakSweep 0.55s cubic-bezier(0.16, 1, 0.3, 1) 0.05s forwards;
}

@keyframes frankLightStreakSweep {
    0% {
        opacity: 0;
        transform: translate(-90%, -50%) scaleX(0.2);
    }
    30% {
        opacity: 1;
        transform: translate(-50%, -50%) scaleX(1.1);
    }
    70% {
        opacity: 0.9;
        transform: translate(-10%, -50%) scaleX(0.8);
    }
    100% {
        opacity: 0;
        transform: translate(40%, -50%) scaleX(0.1);
    }
}

/* STEP 5: Ambient Glow Backdrop */
.frank-anim-glow {
    position: absolute;
    top: 38%;
    left: 50%;
    width: 130px;
    height: 130px;
    transform: translate(-50%, -50%) scale(0.7);
    background: radial-gradient(circle, rgba(34, 211, 238, 0.28) 0%, rgba(124, 58, 237, 0.2) 45%, rgba(217, 70, 239, 0.1) 70%, transparent 80%);
    filter: blur(28px);
    pointer-events: none;
    z-index: 0;
    opacity: 0;
    animation: frankGlowBloom 0.8s ease-out 1.25s forwards;
}

@keyframes frankGlowBloom {
    0% {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.6);
    }
    100% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1.1);
    }
}

/* FRANK Animated Emblem Container */
.frank-anim-emblem {
    position: relative;
    z-index: 2;
    width: 92px;
    height: 92px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transform: scale(0.9);
    animation: frankEmblemEntrance 0.6s cubic-bezier(0.16, 1, 0.3, 1) 0.15s forwards,
               frankEmblemGlowPulse 0.9s ease-out 1.35s forwards;
}

@keyframes frankEmblemEntrance {
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes frankEmblemGlowPulse {
    0% {
        filter: drop-shadow(0 0 0 rgba(34, 211, 238, 0));
    }
    50% {
        filter: drop-shadow(0 0 24px rgba(34, 211, 238, 0.75)) drop-shadow(0 0 36px rgba(124, 58, 237, 0.5));
    }
    100% {
        filter: drop-shadow(0 0 16px rgba(59, 130, 246, 0.45));
    }
}

/* STEP 2: F Symbol Begins Drawing (Spine + Chat Notch) */
.frank-draw-spine {
    stroke-dasharray: 105;
    stroke-dashoffset: 105;
    animation: frankDrawSpine 0.65s cubic-bezier(0.65, 0, 0.35, 1) 0.35s forwards;
}

@keyframes frankDrawSpine {
    to {
        stroke-dashoffset: 0;
    }
}

/* STEP 3: F Shape Completes (Top & Middle Chat Beams) */
.frank-draw-top {
    stroke-dasharray: 55;
    stroke-dashoffset: 55;
    animation: frankDrawTop 0.5s cubic-bezier(0.16, 1, 0.3, 1) 0.75s forwards;
}

@keyframes frankDrawTop {
    to {
        stroke-dashoffset: 0;
    }
}

.frank-draw-mid {
    stroke-dasharray: 38;
    stroke-dashoffset: 38;
    animation: frankDrawMid 0.45s cubic-bezier(0.16, 1, 0.3, 1) 0.88s forwards;
}

@keyframes frankDrawMid {
    to {
        stroke-dashoffset: 0;
    }
}

/* Base tile background */
.frank-svg-bg {
    opacity: 0;
    animation: frankFadeIn 0.5s ease 0.2s forwards;
}

@keyframes frankFadeIn {
    to { opacity: 1; }
}

/* STEP 5: Communication Spark Dot with Glow */
.frank-svg-spark {
    opacity: 0;
    transform: scale(0.2);
    transform-origin: 74px 26px;
    animation: frankSparkPop 0.45s cubic-bezier(0.34, 1.56, 0.64, 1) 1.25s forwards;
}

@keyframes frankSparkPop {
    0% {
        opacity: 0;
        transform: scale(0.2);
    }
    70% {
        opacity: 1;
        transform: scale(1.35);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

/* STEP 6: Wordmark "FRANK" Reveal (opacity 0->1, translateY 10px->0) */
.frank-anim-wordmark {
    position: relative;
    z-index: 2;
    margin-top: 16px;
    font-family: var(--font-sans);
    font-size: 26px;
    font-weight: 900;
    letter-spacing: 2px;
    color: var(--showcase-wordmark, var(--theme-text));
    opacity: 0;
    transform: translateY(10px);
    animation: frankTextReveal 0.65s cubic-bezier(0.16, 1, 0.3, 1) 1.55s forwards;
}

/* STEP 7: Tagline Reveal (subtle fade-up) */
.frank-anim-tagline {
    position: relative;
    z-index: 2;
    margin-top: 6px;
    font-family: var(--font-sans);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.5px;
    color: var(--showcase-subtitle, var(--theme-text-secondary));
    opacity: 0;
    transform: translateY(8px);
    animation: frankTextReveal 0.65s cubic-bezier(0.16, 1, 0.3, 1) 1.85s forwards;
}

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

/* Compact Variant for Auth Screens */
.frank-logo-anim-stage.compact {
    padding: 8px 0;
}
.frank-logo-anim-stage.compact .frank-anim-emblem {
    width: 68px;
    height: 68px;
}
.frank-logo-anim-stage.compact .frank-anim-wordmark {
    font-size: 21px;
    margin-top: 10px;
}
.frank-logo-anim-stage.compact .frank-anim-tagline {
    font-size: 11.5px;
}
.frank-logo-anim-stage.compact .frank-light-streak {
    width: 100px;
}

/* Instant Visibility & Smooth Loading Bar for Splash & Compact */
.frank-logo-anim-stage.splash .frank-anim-emblem,
.frank-logo-anim-stage.compact .frank-anim-emblem {
    opacity: 1 !important;
    transform: none !important;
    animation: none !important;
}

.frank-logo-anim-stage.splash .frank-anim-wordmark,
.frank-logo-anim-stage.compact .frank-anim-wordmark {
    opacity: 1 !important;
    transform: none !important;
    animation: none !important;
}

.frank-logo-anim-stage.splash .frank-anim-tagline,
.frank-logo-anim-stage.compact .frank-anim-tagline {
    opacity: 1 !important;
    transform: none !important;
    animation: none !important;
}

@keyframes frankBarShimmer {
    0% {
        transform: translateX(-100%);
    }
    100% {
        transform: translateX(200%);
    }
}

/* Section 13: Dashboard Static Logo Hover Micro-Interaction */
.sidebar-brand a.brand-text,
.dashboard-brand-hover {
    display: inline-flex;
    align-items: center;
    transition: transform 180ms cubic-bezier(0.16, 1, 0.3, 1),
                filter 180ms ease;
    cursor: pointer;
}

.sidebar-brand a.brand-text:hover,
.dashboard-brand-hover:hover {
    transform: scale(1.03);
    filter: drop-shadow(0 0 10px rgba(59, 130, 246, 0.5)) drop-shadow(0 0 18px rgba(34, 211, 238, 0.35));
}

/* -------------------------------------------------------------------------
   SHOWCASE LIGHTING & AMBIENT EFFECTS (Theme Responsive)
   Seamlessly adapts between Monochrome (classic luxury) and Sandstone (warm editorial).
   Zero hardcoded dark navy or neon leakage in Sandstone mode.
   ------------------------------------------------------------------------- */
.frank-showcase-bg {
    background: var(--showcase-bg, linear-gradient(160deg, #0A0A0A 0%, #111111 60%, #171717 100%)) !important;
    position: relative;
    overflow: hidden;
}

.frank-light-ring {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
    z-index: 1;
}

.frank-light-ring-1 {
    width: 380px;
    height: 380px;
    top: -60px;
    left: -80px;
    border: 1px solid var(--showcase-ring-1, rgba(255, 255, 255, 0.07));
    box-shadow: 0 0 35px var(--showcase-logo-glow, rgba(255, 255, 255, 0.05));
}

.frank-light-ring-2 {
    width: 500px;
    height: 500px;
    bottom: -100px;
    right: -120px;
    border: 1px solid var(--showcase-ring-2, rgba(255, 255, 255, 0.04));
    box-shadow: 0 0 45px var(--showcase-logo-glow, rgba(255, 255, 255, 0.04));
}

.frank-glow-streak {
    position: absolute;
    width: 140%;
    height: 1px;
    background: var(--showcase-streak, linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.12) 50%, transparent 100%));
    transform: rotate(-25deg);
    top: 35%;
    left: -20%;
    pointer-events: none;
    filter: blur(0.5px);
    opacity: 0.55;
    z-index: 1;
}

/* -------------------------------------------------------------------------
   STANDARD NATIVE SYSTEM CURSOR
   Restored standard native operating system cursor.
   ------------------------------------------------------------------------- */
html, body {
    cursor: default;
}

a, button, [role="button"], .btn, .conversation-card, .filter-chip, .clickable, .tab-btn, .action-btn {
    cursor: pointer;
}

input, textarea, [contenteditable="true"], .composer-textarea, .form-input, .form-textarea {
    cursor: text;
}


/* Accessibility: Respect Reduced Motion Preferences (Section 24) */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    .frank-anim-emblem,
    .frank-draw-spine,
    .frank-draw-top,
    .frank-draw-mid,
    .frank-svg-spark,
    .frank-anim-wordmark,
    .frank-anim-tagline,
    .frank-svg-bg,
    .sidebar-brand a.brand-text,
    .dashboard-brand-hover {
        animation: none !important;
        opacity: 1 !important;
        transform: none !important;
        filter: none !important;
        stroke-dashoffset: 0 !important;
    }
    .frank-light-streak,
    .frank-anim-glow,
    .frank-cursor-ripple,
    .frank-cursor-particle {
        display: none !important;
        animation: none !important;
    }
    .custom-cursor {
        transition: none !important;
    }
}