/**
 * WebLab PWA Suite - Loading Icons Library
 * 4 stiluri de încărcare: spinner, dots, pulse, bars
 *
 * @package WebLabPWASuite
 */

/* ============================================
   VARIABILE GLOBALE
   ============================================ */
:root {
    --afpwa-loader-color: #2271b1;
    --afpwa-loader-size: 40px;
}

/* ============================================
   CONTAINER GENERAL
   ============================================ */
.afpwa-loader {
    display: inline-block;
    vertical-align: middle;
    line-height: 1;
    color: var(--afpwa-loader-color);
}

/* ============================================
   1. SPINNER (cerc rotativ)
   ============================================ */
.afpwa-loader-spinner {
    width: var(--afpwa-loader-size);
    height: var(--afpwa-loader-size);
    position: relative;
}

.afpwa-loader-spinner > span {
    display: block;
    width: 100%;
    height: 100%;
    border: 3px solid rgba(0, 0, 0, 0.1);
    border-top-color: var(--afpwa-loader-color);
    border-radius: 50%;
    animation: afpwa-loader-spin 0.8s linear infinite;
}

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

/* ============================================
   2. DOTS (3 puncte pulsatile)
   ============================================ */
.afpwa-loader-dots {
    display: inline-flex;
    align-items: center;
    gap: calc(var(--afpwa-loader-size) * 0.15);
    height: var(--afpwa-loader-size);
}

.afpwa-loader-dots > span {
    display: block;
    width: calc(var(--afpwa-loader-size) * 0.28);
    height: calc(var(--afpwa-loader-size) * 0.28);
    background: var(--afpwa-loader-color);
    border-radius: 50%;
    animation: afpwa-loader-dots-bounce 1.4s ease-in-out infinite both;
}

.afpwa-loader-dots > span:nth-child(1) { animation-delay: -0.32s; }
.afpwa-loader-dots > span:nth-child(2) { animation-delay: -0.16s; }
.afpwa-loader-dots > span:nth-child(3) { animation-delay: 0s; }

@keyframes afpwa-loader-dots-bounce {
    0%, 80%, 100% { transform: scale(0.6); opacity: 0.5; }
    40%           { transform: scale(1);   opacity: 1;   }
}

/* ============================================
   3. PULSE (cerc pulsant)
   ============================================ */
.afpwa-loader-pulse {
    width: var(--afpwa-loader-size);
    height: var(--afpwa-loader-size);
    position: relative;
}

.afpwa-loader-pulse > span {
    display: block;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: var(--afpwa-loader-color);
    opacity: 1;
    animation: afpwa-loader-pulse 1.2s cubic-bezier(0, 0, 0.2, 1) infinite;
}

.afpwa-loader-pulse > span::before,
.afpwa-loader-pulse > span::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 50%;
    background: var(--afpwa-loader-color);
    opacity: 0.6;
}

.afpwa-loader-pulse > span::before { animation: afpwa-loader-pulse 1.2s 0.2s cubic-bezier(0, 0, 0.2, 1) infinite; }
.afpwa-loader-pulse > span::after  { animation: afpwa-loader-pulse 1.2s 0.4s cubic-bezier(0, 0, 0.2, 1) infinite; }

@keyframes afpwa-loader-pulse {
    0%   { transform: scale(0.4); opacity: 0.9; }
    80%, 100% { transform: scale(1); opacity: 0; }
}

/* ============================================
   4. BARS (4 bare verticale)
   ============================================ */
.afpwa-loader-bars {
    display: inline-flex;
    align-items: flex-end;
    gap: calc(var(--afpwa-loader-size) * 0.15);
    height: var(--afpwa-loader-size);
}

.afpwa-loader-bars > span {
    display: block;
    width: calc(var(--afpwa-loader-size) * 0.18);
    height: 100%;
    background: var(--afpwa-loader-color);
    border-radius: 2px;
    transform-origin: bottom;
    animation: afpwa-loader-bars 1s ease-in-out infinite;
}

.afpwa-loader-bars > span:nth-child(1) { animation-delay: -0.4s; }
.afpwa-loader-bars > span:nth-child(2) { animation-delay: -0.3s; }
.afpwa-loader-bars > span:nth-child(3) { animation-delay: -0.2s; }
.afpwa-loader-bars > span:nth-child(4) { animation-delay: -0.1s; }

@keyframes afpwa-loader-bars {
    0%, 100% { transform: scaleY(0.3); opacity: 0.6; }
    50%      { transform: scaleY(1);   opacity: 1;   }
}

/* ============================================
   OVERLAY FULLSCREEN (opțional)
   ============================================ */
.afpwa-loader-overlay {
    position: fixed;
    inset: 0;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(2px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 999999;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, visibility 0.2s ease;
}

.afpwa-loader-overlay.afpwa-loader-active {
    opacity: 1;
    visibility: visible;
}

.afpwa-loader-overlay .afpwa-loader {
    --afpwa-loader-size: 60px;
}

/* ============================================
   INLINE (în butoane, lângă text)
   ============================================ */
.afpwa-loader-inline {
    --afpwa-loader-size: 16px;
    vertical-align: -2px;
    margin-right: 6px;
}

.afpwa-loader-inline.afpwa-loader-dots,
.afpwa-loader-inline.afpwa-loader-bars {
    --afpwa-loader-size: 12px;
}

/* ============================================
   DARK MODE
   ============================================ */
@media (prefers-color-scheme: dark) {
    .afpwa-loader-spinner > span {
        border-color: rgba(255, 255, 255, 0.15);
        border-top-color: var(--afpwa-loader-color);
    }

    .afpwa-loader-overlay {
        background: rgba(0, 0, 0, 0.75);
    }
}

/* ============================================
   REDUCED MOTION (accesibilitate)
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    .afpwa-loader-spinner > span,
    .afpwa-loader-dots > span,
    .afpwa-loader-pulse > span,
    .afpwa-loader-bars > span {
        animation-duration: 2s;
    }
}