/* ===========================
   ADVANCED UI FEATURES
   Page Transitions, Custom Cursor, Particles
   =========================== */

/* ===== PAGE TRANSITION ANIMATIONS ===== */
.page-transition {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-700) 100%);
    z-index: 99999;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.5s var(--ease-out);
}

.page-transition.active {
    opacity: 1;
}

/* Fade transition */
body.fade-transition {
    animation: fadeIn 0.5s var(--ease-out);
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

/* Slide transition */
.slide-transition-enter {
    animation: slideInFromRight 0.6s var(--ease-smooth);
}

.slide-transition-exit {
    animation: slideOutToLeft 0.6s var(--ease-smooth);
}

@keyframes slideInFromRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }

    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOutToLeft {
    from {
        transform: translateX(0);
        opacity: 1;
    }

    to {
        transform: translateX(-100%);
        opacity: 0;
    }
}

/* ===== ENHANCED THEME TOGGLE ANIMATION ===== */
.theme-toggle-label {
    position: relative;
    overflow: hidden;
}

.theme-toggle-label::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: var(--primary-500);
    transform: translate(-50%, -50%);
    transition: width 0.6s var(--ease-out), height 0.6s var(--ease-out);
}

.toggle-checkbox:checked+.theme-toggle-label::before {
    width: 300px;
    height: 300px;
}

/* Animated sun and moon */
.sun-icon,
.moon-icon {
    transition: all 0.4s var(--ease-bounce);
}

.toggle-checkbox:checked+.toggle-label .sun-icon {
    transform: rotate(180deg) scale(0.8);
}

.toggle-checkbox:checked+.toggle-label .moon-icon {
    transform: rotate(-180deg) scale(1.2);
}

/* ===== CUSTOM CURSOR ===== */
.custom-cursor {
    position: fixed;
    width: 20px;
    height: 20px;
    border: 2px solid var(--primary-500);
    border-radius: 50%;
    pointer-events: none;
    z-index: 9999;
    transition: transform 0.15s ease, opacity 0.15s ease;
    opacity: 0;
    mix-blend-mode: difference;
}

.custom-cursor.active {
    opacity: 1;
}

.custom-cursor-dot {
    position: fixed;
    width: 6px;
    height: 6px;
    background: var(--primary-500);
    border-radius: 50%;
    pointer-events: none;
    z-index: 10000;
    transition: transform 0.1s ease;
    opacity: 0;
}

.custom-cursor-dot.active {
    opacity: 1;
}

/* Cursor states */
.custom-cursor.hover {
    transform: scale(2);
    background: rgba(25, 210, 124, 0.1);
}

.custom-cursor.click {
    transform: scale(0.8);
}

/* Hide default cursor when custom cursor is active */
body.custom-cursor-enabled {
    cursor: none;
}

body.custom-cursor-enabled a,
body.custom-cursor-enabled button,
body.custom-cursor-enabled .portfolio-category,
body.custom-cursor-enabled .view-button {
    cursor: none;
}

/* ===== PARTICLE BACKGROUND ===== */
.particles-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
    overflow: hidden;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--primary-400);
    border-radius: 50%;
    opacity: 0.3;
    animation: float-particle linear infinite;
}

@keyframes float-particle {
    0% {
        transform: translateY(0) translateX(0);
        opacity: 0;
    }

    10% {
        opacity: 0.3;
    }

    90% {
        opacity: 0.3;
    }

    100% {
        transform: translateY(-100vh) translateX(var(--particle-drift));
        opacity: 0;
    }
}

/* Particle glow effect */
.particle::after {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: radial-gradient(circle, var(--primary-400), transparent);
    border-radius: 50%;
    opacity: 0.5;
}

/* ===== SOUND WAVE VISUALIZER ===== */
.sound-wave {
    position: fixed;
    bottom: 20px;
    right: 80px;
    display: flex;
    gap: 3px;
    align-items: flex-end;
    height: 30px;
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 1000;
}

.sound-wave.active {
    opacity: 1;
}

.sound-wave-bar {
    width: 3px;
    background: linear-gradient(to top, var(--primary-500), var(--primary-300));
    border-radius: 2px;
    animation: wave-pulse 0.6s ease-in-out infinite;
}

.sound-wave-bar:nth-child(1) {
    animation-delay: 0s;
}

.sound-wave-bar:nth-child(2) {
    animation-delay: 0.1s;
}

.sound-wave-bar:nth-child(3) {
    animation-delay: 0.2s;
}

.sound-wave-bar:nth-child(4) {
    animation-delay: 0.3s;
}

.sound-wave-bar:nth-child(5) {
    animation-delay: 0.2s;
}

.sound-wave-bar:nth-child(6) {
    animation-delay: 0.1s;
}

@keyframes wave-pulse {

    0%,
    100% {
        height: 8px;
    }

    50% {
        height: 24px;
    }
}

/* ===== PARALLAX LAYERS ===== */
.parallax-layer {
    position: absolute;
    width: 100%;
    height: 100%;
    transition: transform 0.1s ease-out;
}

.parallax-layer-1 {
    transform: translateZ(-100px) scale(2);
}

.parallax-layer-2 {
    transform: translateZ(-200px) scale(3);
}

/* ===== LOADING SCREEN ===== */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #000 0%, #1a1a1a 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 99999;
    opacity: 1;
    transition: opacity 0.5s ease;
}

.loading-screen.hidden {
    opacity: 0;
    pointer-events: none;
}

.loading-logo {
    width: 100px;
    height: 100px;
    margin-bottom: 30px;
    animation: pulse-logo 2s ease-in-out infinite;
}

@keyframes pulse-logo {

    0%,
    100% {
        transform: scale(1);
        opacity: 1;
    }

    50% {
        transform: scale(1.1);
        opacity: 0.8;
    }
}

.loading-bar {
    width: 200px;
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 2px;
    overflow: hidden;
    position: relative;
}

.loading-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-500), var(--primary-300));
    border-radius: 2px;
    animation: loading-progress 2s ease-in-out infinite;
}

@keyframes loading-progress {
    0% {
        width: 0%;
        transform: translateX(0);
    }

    50% {
        width: 100%;
        transform: translateX(0);
    }

    100% {
        width: 100%;
        transform: translateX(100%);
    }
}

.loading-text {
    margin-top: 20px;
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 2px;
    text-transform: uppercase;
}

/* ===== RESPONSIVE ADJUSTMENTS ===== */
@media (max-width: 768px) {

    /* Disable custom cursor on mobile */
    .custom-cursor,
    .custom-cursor-dot {
        display: none !important;
    }

    /* Reduce particle count on mobile */
    .particle:nth-child(n+20) {
        display: none;
    }

    /* Simplify animations on mobile */
    .page-transition {
        animation-duration: 0.3s;
    }
}

/* ===== ACCESSIBILITY ===== */
@media (prefers-reduced-motion: reduce) {

    .particle,
    .page-transition,
    .loading-screen,
    .sound-wave-bar {
        animation: none !important;
    }

    .custom-cursor {
        display: none !important;
    }
}

/* Dark mode adjustments */
body.light-mode .particles-container {
    opacity: 0.5;
}

body.light-mode .particle {
    background: var(--primary-600);
}

body.light-mode .loading-screen {
    background: linear-gradient(135deg, #ffffff 0%, #f5f5f5 100%);
}

body.light-mode .loading-text {
    color: rgba(0, 0, 0, 0.7);
}