/* ===== PREMIUM LOADER ===== */
.loader-wrapper {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #0a0a0f 0%, #1a1a2e 50%, #16213e 100%);
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    transition: opacity 1.2s cubic-bezier(0.4, 0, 0.2, 1), visibility 1.2s;
}

.loader-wrapper::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(0, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 0, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 20%, rgba(0, 255, 255, 0.05) 0%, transparent 50%);
    animation: backgroundShift 8s ease-in-out infinite;
    z-index: 0;
}

@keyframes backgroundShift {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.8;
        transform: scale(1.1);
    }
}

.loader-wrapper.hide {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.loader {
    text-align: center;
    z-index: 10000;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 50px;
}

/* Контейнер букв с градиентной рамкой */
.loader .letters-container {
    position: relative;
    padding: 30px 50px;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.02);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 
        0 8px 32px rgba(0, 0, 0, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.loader .letters-container::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(135deg, #00FFFF, #FF00FF, #FFFF00, #00FFFF);
    background-size: 300% 300%;
    border-radius: 20px;
    z-index: -1;
    opacity: 0.5;
    animation: gradientRotate 3s ease infinite;
    filter: blur(8px);
}

@keyframes gradientRotate {
    0%, 100% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
}

.loader .letters {
    display: flex;
    gap: 8px;
    align-items: center;
    justify-content: center;
    position: relative;
}

.loader .letters span {
    display: inline-block;
    font-size: clamp(48px, 5vw, 72px);
    font-weight: 800;
    text-transform: uppercase;
    font-family: "SF Pro Display", sans-serif;
    letter-spacing: 4px;
    opacity: 0;
    transform: translateY(50px) scale(0.5) rotateX(90deg);
    background: linear-gradient(135deg, #FFFFFF 0%, #00FFFF 50%, #FF00FF 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 0 20px rgba(0, 255, 255, 0.5));
    perspective: 1000px;
    transition: all 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.loader .letters span.show {
    opacity: 1;
    transform: translateY(0) scale(1) rotateX(0deg);
    filter: drop-shadow(0 0 30px rgba(0, 255, 255, 0.8));
}

/* Анимация градиента для букв */
@keyframes gradientFlow {
    0%, 100% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
}

.loader .letters span.show {
    background-size: 200% 200%;
    animation: gradientFlow 3s ease infinite, letterFloat 3s ease-in-out infinite;
}

@keyframes letterFloat {
    0%, 100% {
        transform: translateY(0) scale(1) rotateX(0deg);
    }
    50% {
        transform: translateY(-10px) scale(1.05) rotateX(5deg);
    }
}

/* Премиум круг загрузки */
.loader .circle {
    position: relative;
    width: 100px;
    height: 100px;
}

.loader .circle::before,
.loader .circle::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    border: 3px solid transparent;
}

.loader .circle::before {
    border-top-color: #00FFFF;
    border-right-color: #00FFFF;
    animation: spinDouble 2s linear infinite;
    box-shadow: 
        0 0 20px rgba(0, 255, 255, 0.5),
        inset 0 0 20px rgba(0, 255, 255, 0.1);
}

.loader .circle::after {
    border-bottom-color: #FF00FF;
    border-left-color: #FF00FF;
    animation: spinDoubleReverse 1.5s linear infinite;
    box-shadow: 
        0 0 20px rgba(255, 0, 255, 0.5),
        inset 0 0 20px rgba(255, 0, 255, 0.1);
}

@keyframes spinDouble {
    0% {
        transform: rotate(0deg);
        border-top-color: #00FFFF;
        border-right-color: #00FFFF;
    }
    25% {
        border-top-color: #FF00FF;
    }
    50% {
        border-right-color: #FF00FF;
    }
    75% {
        border-top-color: #FFFF00;
    }
    100% {
        transform: rotate(360deg);
        border-top-color: #00FFFF;
        border-right-color: #00FFFF;
    }
}

@keyframes spinDoubleReverse {
    0% {
        transform: rotate(360deg);
        border-bottom-color: #FF00FF;
        border-left-color: #FF00FF;
    }
    25% {
        border-bottom-color: #FFFF00;
    }
    50% {
        border-left-color: #FFFF00;
    }
    75% {
        border-bottom-color: #00FFFF;
    }
    100% {
        transform: rotate(0deg);
        border-bottom-color: #FF00FF;
        border-left-color: #FF00FF;
    }
}

/* Частицы вокруг loader */
.loader .particles {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    pointer-events: none;
}

.loader .particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: #00FFFF;
    border-radius: 50%;
    opacity: 0;
    animation: particleFloat 3s ease-in-out infinite;
    box-shadow: 0 0 10px rgba(0, 255, 255, 0.8);
}

@keyframes particleFloat {
    0% {
        opacity: 0;
        transform: translateY(0) translateX(0) scale(0);
    }
    50% {
        opacity: 1;
        transform: translateY(-100px) translateX(50px) scale(1);
    }
    100% {
        opacity: 0;
        transform: translateY(-200px) translateX(100px) scale(0);
    }
}

/* Анимация скрытия loader */
.loader-wrapper.hide .loader {
    opacity: 0;
    transform: scale(0.8) translateY(-50px);
    transition: all 1s cubic-bezier(0.4, 0, 0.2, 1);
}

.loader-wrapper.hide .loader .circle::before,
.loader-wrapper.hide .loader .circle::after {
    animation: none;
    border-color: rgba(255, 255, 255, 0.1);
}

.loader-wrapper.hide .loader .letters span {
    animation: none;
    transform: translateY(-30px) scale(0.9);
    opacity: 0;
}

/* Дополнительные эффекты свечения */
.loader .letters span::before {
    content: attr(data-letter);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #00FFFF, #FF00FF);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: blur(15px);
    opacity: 0.5;
    z-index: -1;
    animation: glowPulse 2s ease-in-out infinite;
}

@keyframes glowPulse {
    0%, 100% {
        opacity: 0.3;
        transform: scale(1);
    }
    50% {
        opacity: 0.7;
        transform: scale(1.1);
    }
}