/* ===================================
   KEYFRAME ANIMATIONS
   =================================== */

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

@keyframes scroll {
    0% { opacity: 1; transform: translateX(-50%) translateY(0); }
    100% { opacity: 0; transform: translateX(-50%) translateY(15px); }
}

@keyframes heartbeat {
    0%, 100% { transform: scale(1); }
    10%, 30% { transform: scale(1.1); }
    20%, 40% { transform: scale(1); }
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

@keyframes glow {
    0%, 100% { box-shadow: 0 0 20px rgba(0, 212, 255, 0.3); }
    50% { box-shadow: 0 0 40px rgba(0, 212, 255, 0.6); }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.05); opacity: 0.8; }
}

@keyframes slideInFromLeft {
    0% {
        opacity: 0;
        transform: translateX(-100px);
    }
    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInFromRight {
    0% {
        opacity: 0;
        transform: translateX(100px);
    }
    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInFromBottom {
    0% {
        opacity: 0;
        transform: translateY(50px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    0% { opacity: 0; }
    100% { opacity: 1; }
}

@keyframes scaleUp {
    0% {
        opacity: 0;
        transform: scale(0.8);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes rotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes shimmer {
    0% { background-position: -1000px 0; }
    100% { background-position: 1000px 0; }
}

@keyframes ripple {
    0% {
        transform: scale(0);
        opacity: 1;
    }
    100% {
        transform: scale(4);
        opacity: 0;
    }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-10px); }
    60% { transform: translateY(-5px); }
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
    20%, 40%, 60%, 80% { transform: translateX(5px); }
}

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

/* ===================================
   ENTRANCE ANIMATIONS
   =================================== */

.fade-in {
    animation: fadeIn 0.8s ease-out;
}

.slide-in-left {
    animation: slideInFromLeft 0.8s ease-out;
}

.slide-in-right {
    animation: slideInFromRight 0.8s ease-out;
}

.slide-in-bottom {
    animation: slideInFromBottom 0.8s ease-out;
}

.scale-up {
    animation: scaleUp 0.6s ease-out;
}

/* ===================================
   INTERACTIVE ANIMATIONS
   =================================== */

.hover-lift {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hover-lift:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 212, 255, 0.3);
}

.hover-glow {
    transition: box-shadow 0.3s ease;
}

.hover-glow:hover {
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.6);
}

.hover-scale {
    transition: transform 0.3s ease;
}

.hover-scale:hover {
    transform: scale(1.05);
}

.hover-rotate {
    transition: transform 0.3s ease;
}

.hover-rotate:hover {
    transform: rotate(5deg);
}

/* ===================================
   BUTTON RIPPLE EFFECT
   =================================== */

.btn {
    position: relative;
    overflow: hidden;
}

.btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:active::after {
    width: 300px;
    height: 300px;
}

/* ===================================
   LOADING ANIMATIONS
   =================================== */

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(0, 212, 255, 0.2);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: rotate 1s linear infinite;
}

.dots-loading {
    display: flex;
    gap: 5px;
}

.dots-loading span {
    width: 8px;
    height: 8px;
    background: var(--color-primary);
    border-radius: 50%;
    animation: bounce 1.4s infinite ease-in-out both;
}

.dots-loading span:nth-child(1) { animation-delay: -0.32s; }
.dots-loading span:nth-child(2) { animation-delay: -0.16s; }

/* ===================================
   TEXT ANIMATIONS
   =================================== */

.gradient-text {
    background: var(--gradient-primary);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientShift 3s ease infinite;
}

.shimmer-text {
    background: linear-gradient(
        90deg,
        var(--color-text-primary) 0%,
        var(--color-primary) 50%,
        var(--color-text-primary) 100%
    );
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: shimmer 3s linear infinite;
}

/* ===================================
   SCROLL ANIMATIONS
   =================================== */

.reveal {
    opacity: 0;
    transform: translateY(50px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

.reveal-left {
    opacity: 0;
    transform: translateX(-100px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal-left.active {
    opacity: 1;
    transform: translateX(0);
}

.reveal-right {
    opacity: 0;
    transform: translateX(100px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal-right.active {
    opacity: 1;
    transform: translateX(0);
}

.reveal-scale {
    opacity: 0;
    transform: scale(0.8);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal-scale.active {
    opacity: 1;
    transform: scale(1);
}

/* ===================================
   PARTICLE BACKGROUND
   =================================== */

#particles-js {
    position: absolute;
    width: 100%;
    height: 100%;
    background: var(--gradient-bg);
}

/* ===================================
   CARD FLIP ANIMATION
   =================================== */

.flip-card {
    perspective: 1000px;
}

.flip-card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.8s;
    transform-style: preserve-3d;
}

.flip-card:hover .flip-card-inner {
    transform: rotateY(180deg);
}

.flip-card-front,
.flip-card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
}

.flip-card-back {
    transform: rotateY(180deg);
}

/* ===================================
   PROGRESS BAR ANIMATION
   =================================== */

.progress-bar {
    position: relative;
    width: 100%;
    height: 8px;
    background: rgba(0, 212, 255, 0.1);
    border-radius: 10px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 10px;
    width: 0;
    transition: width 1.5s ease-in-out;
}

.progress-fill.animate {
    animation: fillProgress 1.5s ease-in-out forwards;
}

@keyframes fillProgress {
    from { width: 0; }
    to { width: var(--progress-width); }
}

/* ===================================
   COUNTER ANIMATION
   =================================== */

.counter {
    display: inline-block;
    transition: transform 0.3s ease;
}

.counter.counting {
    animation: pulse 0.5s ease;
}

/* ===================================
   MODAL ANIMATIONS
   =================================== */

@keyframes modalFadeIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes modalFadeOut {
    from {
        opacity: 1;
        transform: scale(1);
    }
    to {
        opacity: 0;
        transform: scale(0.9);
    }
}

.modal.show {
    animation: modalFadeIn 0.3s ease;
}

.modal.hide {
    animation: modalFadeOut 0.3s ease;
}

/* ===================================
   TYPING INDICATOR
   =================================== */

.typing-indicator {
    display: flex;
    gap: 4px;
}

.typing-indicator span {
    width: 8px;
    height: 8px;
    background: var(--color-primary);
    border-radius: 50%;
    animation: typing 1.4s infinite ease-in-out;
}

.typing-indicator span:nth-child(1) { animation-delay: 0s; }
.typing-indicator span:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.4s; }

@keyframes typing {
    0%, 60%, 100% { transform: translateY(0); opacity: 0.7; }
    30% { transform: translateY(-10px); opacity: 1; }
}

/* ===================================
   GLOW EFFECT
   =================================== */

.glow-effect {
    position: relative;
}

.glow-effect::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.4) 0%, transparent 70%);
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.glow-effect:hover::before {
    opacity: 1;
    animation: glow 2s ease-in-out infinite;
}

/* ===================================
   STAGGER ANIMATION DELAYS
   =================================== */

.stagger-1 { animation-delay: 0.1s; }
.stagger-2 { animation-delay: 0.2s; }
.stagger-3 { animation-delay: 0.3s; }
.stagger-4 { animation-delay: 0.4s; }
.stagger-5 { animation-delay: 0.5s; }
.stagger-6 { animation-delay: 0.6s; }

/* ===================================
   INFINITE ANIMATIONS
   =================================== */

.float-animation {
    animation: float 3s ease-in-out infinite;
}

.pulse-animation {
    animation: pulse 2s ease-in-out infinite;
}

.glow-animation {
    animation: glow 2s ease-in-out infinite;
}

.rotate-animation {
    animation: rotate 20s linear infinite;
}

/* ===================================
   PAGE TRANSITIONS
   =================================== */

.page-transition {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--color-bg-dark);
    z-index: 9999;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.5s ease;
}

.page-transition.active {
    opacity: 1;
    pointer-events: all;
}

/* ===================================
   TOOLTIP ANIMATIONS
   =================================== */

.tooltip {
    position: relative;
}

.tooltip::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(-10px);
    padding: 0.5rem 1rem;
    background: var(--color-bg-card);
    color: var(--color-text-primary);
    border: 1px solid var(--color-primary);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.tooltip:hover::after {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* ===================================
   ACCESSIBILITY - REDUCED MOTION
   =================================== */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}