/* -------------------------------------------------------------
 * SpaiApps - CapCut & TikTok Subtitle Motion FX Engine
 * Hardware-Accelerated CSS3 Transitions (60fps requestAnimationFrame, Zero Server Load)
 * ------------------------------------------------------------- */

:root {
    --active-color: #FFE600;
    --text-color: #FFFFFF;
    --box-bg-color: rgba(124, 58, 237, 0.85);
    --stroke-color: #000000;
    --morph-speed: 0.16s;
    --popup-speed: 0.22s;
    --font-size-val: 24px;
    --font-family-val: 'Montserrat', sans-serif;
}

/* 1. Subtitle Container & Overlay Wrapper */
.sub-overlay-container {
    position: relative;
    display: inline-flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    max-width: 94%;
    margin: 0 auto;
    row-gap: 6px;
    z-index: 10;
    pointer-events: none;
    font-family: var(--font-family-val, 'Montserrat', sans-serif);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

/* Uppercase Mode for TikTok / Shorts */
.sub-uppercase .sub-word {
    text-transform: uppercase !important;
}

/* 2. Individual Subtitle Words */
.sub-word {
    display: inline-block;
    position: relative;
    z-index: 3;
    margin: 0 4px;
    font-size: var(--font-size-val);
    font-weight: 800;
    line-height: 1.25;
    white-space: nowrap;
    transform-origin: center bottom;
    color: var(--text-color);
    transition: transform var(--popup-speed) cubic-bezier(0.175, 0.885, 0.32, 1.275), color 0.12s ease, opacity 0.15s ease;
}

/* --- EFFECT 1: TikTok / Hormozi Elastic Spring Pop (Overshoot + Tilt) --- */
@keyframes spring-pop {
    0% { transform: scale(0.92) rotate(0deg); opacity: 0.8; }
    45% { transform: scale(1.45) rotate(-2.5deg); opacity: 1; }
    75% { transform: scale(1.28) rotate(1deg); }
    100% { transform: scale(1.35) rotate(0deg); opacity: 1; }
}

.sub-fx-bounce .sub-word.active {
    animation: spring-pop var(--popup-speed) cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
    color: var(--active-color) !important;
}
.sub-fx-bounce .sub-word.read {
    transform: scale(1.0);
    color: var(--text-color);
}

/* --- EFFECT 2: Progressive Karaoke Color Fill (Tô màu 60fps theo audio) --- */
.sub-fx-karaoke-fill .sub-word {
    background: linear-gradient(to right, var(--active-color) var(--progress, 0%), var(--text-color) var(--progress, 0%));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    transition: transform 0.18s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
.sub-fx-karaoke-fill .sub-word.active {
    transform: scale(1.26);
}
.sub-fx-karaoke-fill .sub-word.read {
    transform: scale(1.0);
}

/* --- EFFECT 3: Kinetic Tilt & Shake (Rung giật nghiêng năng lượng cao) --- */
@keyframes kinetic-shake-tilt {
    0% { transform: scale(1.0) translateY(0) rotate(0deg); }
    20% { transform: scale(1.42) translateY(-6px) rotate(6deg); }
    45% { transform: scale(1.32) translateY(-3px) rotate(-5deg); }
    70% { transform: scale(1.22) translateY(-1px) rotate(2deg); }
    100% { transform: scale(1.25) translateY(0) rotate(0deg); }
}

.sub-fx-shake .sub-word.active {
    animation: kinetic-shake-tilt 0.3s cubic-bezier(0.2, 0.68, 0.76, 1.2) forwards;
    color: var(--active-color) !important;
    filter: drop-shadow(0 0 6px var(--active-color));
}

/* --- EFFECT 4: Cyberpunk Neon Pulse (Phát quang Neon tỏa sáng) --- */
@keyframes neon-glow-pulse {
    0% { text-shadow: 0 0 4px var(--active-color), 0 0 10px var(--active-color); }
    50% { text-shadow: 0 0 16px var(--active-color), 0 0 30px var(--active-color), 0 0 45px #a855f7; }
    100% { text-shadow: 0 0 4px var(--active-color), 0 0 10px var(--active-color); }
}

.sub-fx-glow .sub-word.active {
    animation: neon-glow-pulse 0.9s infinite ease-in-out;
    color: var(--active-color) !important;
    transform: scale(1.28);
}

/* --- EFFECT 5: Pop Art Comic 3D Punch (Bóng đổ 3D truyện tranh hoạt hình) --- */
.sub-fx-comic .sub-word {
    font-weight: 900;
    text-transform: uppercase;
    text-shadow: 3px 3px 0px #000, -1.5px -1.5px 0 #000, 1.5px -1.5px 0 #000, -1.5px 1.5px 0 #000, 0 2px 0 #000;
}
.sub-fx-comic .sub-word.active {
    transform: scale(1.4) translateY(-4px) rotate(-1.5deg);
    color: var(--active-color) !important;
    text-shadow: 4px 4px 0px #000, -1.5px -1.5px 0 #000, 1.5px -1.5px 0 #000, -1.5px 1.5px 0 #000, 0 3px 0 #000;
}

/* --- EFFECT 6: Glitch RGB Aberration (Nhiễu quang sai viễn tưởng) --- */
@keyframes glitch-rgb-text {
    0% { text-shadow: 2px 0 0 #ff0055, -2px 0 0 #00ffcc; transform: translate(0, 0) scale(1.25); }
    25% { text-shadow: -2.5px 1.5px 0 #ff0055, 2.5px -1.5px 0 #00ffcc; transform: translate(-1.5px, 1px) scale(1.28); }
    50% { text-shadow: 2.5px -1.5px 0 #ff0055, -2.5px 1.5px 0 #00ffcc; transform: translate(1.5px, -1px) scale(1.25); }
    75% { text-shadow: -2px 0 0 #ff0055, 2px 0 0 #00ffcc; transform: translate(-1px, 0.5px) scale(1.26); }
    100% { text-shadow: 2px 0 0 #ff0055, -2px 0 0 #00ffcc; transform: translate(0, 0) scale(1.25); }
}

.sub-fx-glitch .sub-word.active {
    animation: glitch-rgb-text 0.16s infinite linear;
    color: var(--active-color) !important;
}

/* --- EFFECT 7: Wave Bounce --- */
@keyframes wave-bounce {
    0% { transform: translateY(0); }
    35% { transform: translateY(-9px) scale(1.2); }
    70% { transform: translateY(2px) scale(0.96); }
    100% { transform: translateY(0); }
}

.sub-fx-wave .sub-word.active {
    animation: wave-bounce var(--popup-speed) ease-in-out forwards;
    color: var(--active-color) !important;
}

/* --- EFFECT 8: Fade-in Slide Up (Tối giản Clean) --- */
.sub-fx-slide .sub-word {
    opacity: 0.4;
    transform: translateY(4px);
}
.sub-fx-slide .sub-word.active,
.sub-fx-slide .sub-word.read {
    opacity: 1;
    transform: translateY(0);
}
.sub-fx-slide .sub-word.active {
    color: var(--active-color) !important;
    transform: scale(1.16) translateY(-2px);
}

/* --- Stroke Styles --- */
.sub-stroke-none .sub-word {
    -webkit-text-stroke: 0 !important;
}
.sub-stroke-thin .sub-word {
    -webkit-text-stroke: 1px var(--stroke-color, #000000);
}
.sub-stroke-medium .sub-word {
    -webkit-text-stroke: 2px var(--stroke-color, #000000);
}
.sub-stroke-heavy .sub-word {
    -webkit-text-stroke: 3.5px var(--stroke-color, #000000);
    paint-order: stroke fill;
}

/* --- Shadow Styles --- */
.sub-shadow-none .sub-word {
    text-shadow: none !important;
}
.sub-shadow-soft .sub-word {
    text-shadow: 0 2px 6px rgba(0, 0, 0, 0.8), 0 0 12px rgba(0, 0, 0, 0.4);
}
.sub-shadow-3d .sub-word {
    text-shadow: 3px 3px 0px #000000, -1px -1px 0 #000000, 1px -1px 0 #000000, -1px 1px 0 #000000;
}
.sub-shadow-neon .sub-word.active {
    text-shadow: 0 0 10px var(--active-color), 0 0 22px var(--active-color);
}

/* 3. Dynamic Morphing Bounding Box (Hộp nền viên thuốc bám đuổi theo từ) */
.sub-morph-box {
    position: absolute;
    background-color: var(--box-bg-color);
    border: 1.5px solid rgba(255, 255, 255, 0.25);
    border-radius: 9999px;
    z-index: 1;
    pointer-events: none;
    opacity: 0;
    box-shadow: 0 4px 18px rgba(0, 0, 0, 0.35), 0 0 12px rgba(255, 255, 255, 0.12) inset;
    backdrop-filter: blur(4px);
    transition: left var(--morph-speed) cubic-bezier(0.2, 0.8, 0.25, 1),
                top var(--morph-speed) cubic-bezier(0.2, 0.8, 0.25, 1),
                width var(--morph-speed) cubic-bezier(0.2, 0.8, 0.25, 1),
                height var(--morph-speed) cubic-bezier(0.2, 0.8, 0.25, 1),
                opacity var(--morph-speed) ease;
}

.sub-morph-box.visible {
    opacity: 1;
}

/* ==========================================================================
   4. SLEEK TIMELINE-STYLE DARK SCROLLBAR (Siêu mảnh 4-5px, nền xám tiệp màu)
   ========================================================================== */
.custom-scrollbar-dark::-webkit-scrollbar,
#ws-subtitle-generator *::-webkit-scrollbar,
#editorTimelineScroll::-webkit-scrollbar,
.sub-dark-scroll::-webkit-scrollbar {
    width: 5px;
    height: 5px;
}

.custom-scrollbar-dark::-webkit-scrollbar-track,
#ws-subtitle-generator *::-webkit-scrollbar-track,
#editorTimelineScroll::-webkit-scrollbar-track,
.sub-dark-scroll::-webkit-scrollbar-track {
    background: #0f172a; /* Nền tối tiệp màu với container nền */
    border-radius: 9999px;
}

.custom-scrollbar-dark::-webkit-scrollbar-thumb,
#ws-subtitle-generator *::-webkit-scrollbar-thumb,
#editorTimelineScroll::-webkit-scrollbar-thumb,
.sub-dark-scroll::-webkit-scrollbar-thumb {
    background: #334155; /* Xám slate-700 trùng border của frame setting */
    border-radius: 9999px;
    border: 1px solid #1e293b;
}

.custom-scrollbar-dark::-webkit-scrollbar-thumb:hover,
#ws-subtitle-generator *::-webkit-scrollbar-thumb:hover,
#editorTimelineScroll::-webkit-scrollbar-thumb:hover,
.sub-dark-scroll::-webkit-scrollbar-thumb:hover {
    background: #475569;
}

/* Triệt tiêu hoàn toàn nút mũi tên < và > thô kệch mặc định của Windows */
.custom-scrollbar-dark::-webkit-scrollbar-button,
#ws-subtitle-generator *::-webkit-scrollbar-button,
#editorTimelineScroll::-webkit-scrollbar-button,
.sub-dark-scroll::-webkit-scrollbar-button {
    display: none !important;
    width: 0 !important;
    height: 0 !important;
}

/* Chuẩn Firefox */
#ws-subtitle-generator *,
#editorTimelineScroll,
.custom-scrollbar-dark,
.sub-dark-scroll {
    scrollbar-width: thin;
    scrollbar-color: #334155 #0f172a;
}

/* Chống tràn chữ cho các ô Select trong Dark Studio */
#ws-subtitle-generator select {
    text-overflow: ellipsis;
    white-space: nowrap;
    overflow: hidden;
}