/* ============================================
   ALLSUN NATURE — SCROLL ANIMATIONS
   Solar Flow Floating Badge + Scroll Effects
   
   <link rel="stylesheet" href="css/scroll-animations.css">
============================================ */

/* ============================================
   1. SCROLL REVEAL ANIMATIONS
============================================ */
.scroll-reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s cubic-bezier(0.25,0.46,0.45,0.94), transform 0.8s cubic-bezier(0.25,0.46,0.45,0.94);
}
.scroll-reveal.revealed { opacity: 1; transform: translateY(0); }

.scroll-reveal-left {
    opacity: 0; transform: translateX(-60px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}
.scroll-reveal-left.revealed { opacity: 1; transform: translateX(0); }

.scroll-reveal-right {
    opacity: 0; transform: translateX(60px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}
.scroll-reveal-right.revealed { opacity: 1; transform: translateX(0); }

.scroll-reveal-scale {
    opacity: 0; transform: scale(0.85);
    transition: opacity 0.7s ease, transform 0.7s ease;
}
.scroll-reveal-scale.revealed { opacity: 1; transform: scale(1); }

.stagger-children > * {
    opacity: 0; transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}
.stagger-children.revealed > *:nth-child(1) { transition-delay: 0.05s; }
.stagger-children.revealed > *:nth-child(2) { transition-delay: 0.12s; }
.stagger-children.revealed > *:nth-child(3) { transition-delay: 0.19s; }
.stagger-children.revealed > *:nth-child(4) { transition-delay: 0.26s; }
.stagger-children.revealed > *:nth-child(5) { transition-delay: 0.33s; }
.stagger-children.revealed > *:nth-child(6) { transition-delay: 0.40s; }
.stagger-children.revealed > * { opacity: 1; transform: translateY(0); }


/* ============================================
   2. SCROLL PROGRESS BAR
============================================ */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: linear-gradient(90deg, #1b5e20, #28a745, #66bb6a);
    z-index: 9999;
    width: 0%;
    transition: width 0.1s linear;
    box-shadow: 0 0 8px rgba(40,167,69,0.4);
}


/* ============================================
   3. SOLAR FLOW FLOATING BADGE
   Fixed on right side, vertical layout
   Scroll reveals step-by-step
============================================ */
.solar-flow-float {
    position: fixed;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 50;
    pointer-events: none;
    width: 70px;
}

.solar-flow-float svg {
    width: 70px;
    height: auto;
    filter: drop-shadow(0 4px 15px rgba(0,0,0,0.08));
    overflow: visible;
}

/* --- Each element starts hidden --- */
.sf-b-sun,
.sf-b-rays,
.sf-b-panel,
.sf-b-cable1,
.sf-b-inverter,
.sf-b-cable2,
.sf-b-house,
.sf-b-label {
    opacity: 0;
    transition: opacity 0.6s ease;
}

/* --- Scroll progress steps reveal --- */
.solar-flow-float[data-step="1"] .sf-b-sun { opacity: 1; }

.solar-flow-float[data-step="2"] .sf-b-sun { opacity: 1; }
.solar-flow-float[data-step="2"] .sf-b-rays { opacity: 1; }

.solar-flow-float[data-step="3"] .sf-b-sun { opacity: 1; }
.solar-flow-float[data-step="3"] .sf-b-rays { opacity: 1; }
.solar-flow-float[data-step="3"] .sf-b-panel { opacity: 1; }

.solar-flow-float[data-step="4"] .sf-b-sun { opacity: 1; }
.solar-flow-float[data-step="4"] .sf-b-rays { opacity: 1; }
.solar-flow-float[data-step="4"] .sf-b-panel { opacity: 1; }
.solar-flow-float[data-step="4"] .sf-b-cable1 { opacity: 1; }
.solar-flow-float[data-step="4"] .sf-b-inverter { opacity: 1; }

.solar-flow-float[data-step="5"] .sf-b-sun { opacity: 1; }
.solar-flow-float[data-step="5"] .sf-b-rays { opacity: 1; }
.solar-flow-float[data-step="5"] .sf-b-panel { opacity: 1; }
.solar-flow-float[data-step="5"] .sf-b-cable1 { opacity: 1; }
.solar-flow-float[data-step="5"] .sf-b-inverter { opacity: 1; }
.solar-flow-float[data-step="5"] .sf-b-cable2 { opacity: 1; }
.solar-flow-float[data-step="5"] .sf-b-house { opacity: 1; }
.solar-flow-float[data-step="5"] .sf-b-label { opacity: 1; }

/* --- Sun animations --- */
.solar-flow-float[data-step] .sf-b-sun {
    animation: sfbSunPulse 3s ease-in-out infinite;
}

@keyframes sfbSunPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.04); }
}

/* --- Energy dots on cables --- */
.sf-b-dot {
    opacity: 0;
}

.solar-flow-float[data-step="4"] .sf-b-dot-1,
.solar-flow-float[data-step="5"] .sf-b-dot-1 {
    opacity: 1;
}

.solar-flow-float[data-step="5"] .sf-b-dot-2 {
    opacity: 1;
}

/* --- Window glow --- */
.sf-b-win-glow {
    opacity: 0;
}

.solar-flow-float[data-step="5"] .sf-b-win-glow {
    animation: sfbWinGlow 2.5s ease-in-out infinite;
}

@keyframes sfbWinGlow {
    0%, 100% { opacity: 0; }
    50% { opacity: 0.6; }
}

/* --- LED blink --- */
.sf-b-led {
    opacity: 0;
}

.solar-flow-float[data-step="4"] .sf-b-led,
.solar-flow-float[data-step="5"] .sf-b-led {
    animation: sfbLed 1.5s ease-in-out infinite;
}

@keyframes sfbLed {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 1; }
}

/* --- Step label at bottom --- */
.sf-step-label {
    text-align: center;
    margin-top: 8px;
    font-family: 'Outfit', sans-serif;
    font-size: 0.6rem;
    font-weight: 700;
    color: #28a745;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    opacity: 0.8;
    white-space: nowrap;
}


/* ============================================
   4. SOLAR DIVIDER
============================================ */
.solar-divider {
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, transparent 0%, rgba(40,167,69,0.1) 15%, rgba(40,167,69,0.4) 35%, #28a745 50%, rgba(40,167,69,0.4) 65%, rgba(40,167,69,0.1) 85%, transparent 100%);
    position: relative;
    overflow: hidden;
}

.solar-divider::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 60%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.5), transparent);
    animation: shimmerLine 3s ease-in-out infinite;
}

@keyframes shimmerLine {
    0% { left: -60%; }
    100% { left: 100%; }
}


/* ============================================
   5. RESPONSIVE
============================================ */
@media (max-width: 1199px) {
    .solar-flow-float {
        right: 8px;
        width: 55px;
    }
    .solar-flow-float svg {
        width: 55px;
    }
}

@media (max-width: 991px) {
    .solar-flow-float {
        display: none;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    .scroll-reveal, .scroll-reveal-left, .scroll-reveal-right,
    .scroll-reveal-scale, .stagger-children > * {
        animation: none !important;
        transition: none !important;
        opacity: 1 !important;
        transform: none !important;
    }
    .solar-flow-float { display: none; }
}