/**
 * VTOWP Loader Styles
 * File: assets/css/vtowp-client-loader.css
 * Version: 1.0.0.0
 * 
 * @package VTOWP_Client
 * @since   1.0.0.0
 * 
 * 🔧 CHANGELOG:
 * - Already following vtowp-client pattern ✅
 * - No changes needed
 */

/* ============================================
   LOADER OVERLAY
   ============================================ */
.vtowp-client-loader-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 999999;
    animation: vtowp-client-loader-fade-in 0.3s ease;
}

.vtowp-client-loader-overlay.active {
    display: flex;
}

@keyframes vtowp-client-loader-fade-in {
    0% { opacity: 0; }
    100% { opacity: 1; }
}

/* ============================================
   LOADER BOX - GLASS DESIGN
   ============================================ */
.vtowp-client-loader-box {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 40px 48px;
    border-radius: 24px;
    text-align: center;
    box-shadow: 
        0 32px 80px rgba(0, 0, 0, 0.2),
        0 8px 32px rgba(0, 0, 0, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.3);
    min-width: 280px;
    max-width: 400px;
    animation: vtowp-client-loader-scale-in 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes vtowp-client-loader-scale-in {
    0% { transform: scale(0.8); opacity: 0; }
    100% { transform: scale(1); opacity: 1; }
}

/* ============================================
   SPINNER - MODERN RING DESIGN
   ============================================ */
.vtowp-client-loader-spinner {
    position: relative;
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
}

.vtowp-client-loader-spinner-ring {
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    border: 4px solid transparent;
    animation: vtowp-client-loader-spin 1.2s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

.vtowp-client-loader-spinner-ring:nth-child(1) {
    border-top-color: #3B82F6;
    animation-delay: 0s;
}

.vtowp-client-loader-spinner-ring:nth-child(2) {
    border-right-color: #8B5CF6;
    animation-delay: 0.2s;
    width: 75%;
    height: 75%;
    top: 12.5%;
    left: 12.5%;
}

.vtowp-client-loader-spinner-ring:nth-child(3) {
    border-bottom-color: #10B981;
    animation-delay: 0.4s;
    width: 50%;
    height: 50%;
    top: 25%;
    left: 25%;
}

@keyframes vtowp-client-loader-spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ============================================
   LOADER TEXT
   ============================================ */
.vtowp-client-loader-title {
    color: #1e293b;
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 6px;
    letter-spacing: -0.3px;
}

.vtowp-client-loader-sub {
    color: #64748b;
    font-size: 14px;
    font-weight: 400;
    opacity: 0.8;
}

/* Pulse dots animation for subtitle */
.vtowp-client-loader-sub::after {
    content: '';
    animation: vtowp-client-loader-dots 1.5s steps(4) infinite;
}

@keyframes vtowp-client-loader-dots {
    0% { content: ''; }
    25% { content: '.'; }
    50% { content: '..'; }
    75% { content: '...'; }
    100% { content: ''; }
}

/* ============================================
   MOBILE RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
    .vtowp-client-loader-box {
        padding: 28px 32px;
        min-width: 220px;
        max-width: 320px;
        border-radius: 20px;
    }
    
    .vtowp-client-loader-spinner {
        width: 48px;
        height: 48px;
        margin: 0 auto 16px;
    }
    
    .vtowp-client-loader-spinner-ring {
        border-width: 3px;
    }
    
    .vtowp-client-loader-title {
        font-size: 16px;
    }
    
    .vtowp-client-loader-sub {
        font-size: 13px;
    }
}

@media (max-width: 480px) {
    .vtowp-client-loader-box {
        padding: 20px 24px;
        min-width: 180px;
        max-width: 280px;
        border-radius: 16px;
    }
    
    .vtowp-client-loader-spinner {
        width: 40px;
        height: 40px;
        margin: 0 auto 12px;
    }
    
    .vtowp-client-loader-spinner-ring {
        border-width: 2.5px;
    }
    
    .vtowp-client-loader-title {
        font-size: 15px;
    }
    
    .vtowp-client-loader-sub {
        font-size: 12px;
    }
}