/* ========================================
   Background Gradient Flow Animation
   ======================================== */
@keyframes gradientFlow {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

.gradient-animated {
    background: linear-gradient(-45deg, #2563eb, #8b5cf6, #06b6d4, #10b981);
    background-size: 400% 400%;
    animation: gradientFlow 15s ease infinite;
}

/* ========================================
   Fade In/Out Animations
   ======================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes fadeOut {
    from {
        opacity: 1;
    }
    to {
        opacity: 0;
    }
}

.fade-in {
    animation: fadeIn var(--transition-normal) ease-in-out;
}

.fade-out {
    animation: fadeOut var(--transition-normal) ease-in-out;
}

.fade-in-fast {
    animation: fadeIn var(--transition-fast) ease-in-out;
}

.fade-in-slow {
    animation: fadeIn var(--transition-slow) ease-in-out;
}

/* ========================================
   Slide In Animations
   ======================================== */
@keyframes slideInLeft {
    from {
        transform: translateX(-100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideInUp {
    from {
        transform: translateY(100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes slideInDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.slide-in-left {
    animation: slideInLeft var(--transition-normal) ease-out;
}

.slide-in-right {
    animation: slideInRight var(--transition-normal) ease-out;
}

.slide-in-up {
    animation: slideInUp var(--transition-normal) ease-out;
}

.slide-in-down {
    animation: slideInDown var(--transition-normal) ease-out;
}

/* ========================================
   Avatar Float Animation
   ======================================== */
@keyframes avatarFloat {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

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

/* ========================================
   Typewriter Effect
   ======================================== */
@keyframes typewriter {
    from {
        width: 0;
    }
    to {
        width: 100%;
    }
}

@keyframes blink {
    0%, 50% {
        border-color: transparent;
    }
    51%, 100% {
        border-color: var(--color-text-primary);
    }
}

.typewriter {
    overflow: hidden;
    white-space: nowrap;
    border-right: 3px solid var(--color-text-primary);
    animation:
        typewriter 3s steps(40) 1s forwards,
        blink 0.75s step-end infinite;
}

/* ========================================
   Blink Animation
   ======================================== */
@keyframes blink {
    0%, 50% {
        opacity: 1;
    }
    51%, 100% {
        opacity: 0;
    }
}

.blink {
    animation: blink 1s step-end infinite;
}

.blink-slow {
    animation: blink 2s step-end infinite;
}

.blink-cursor {
    display: inline-block;
    width: 2px;
    height: 1em;
    background-color: var(--color-text-primary);
    animation: blink 1s step-end infinite;
    vertical-align: text-bottom;
}

/* ========================================
   Scale Animations
   ======================================== */
@keyframes scaleIn {
    from {
        transform: scale(0.9);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

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

.scale-in {
    animation: scaleIn var(--transition-normal) ease-out;
}

.scale-out {
    animation: scaleOut var(--transition-normal) ease-in;
}

/* ========================================
   Rotate Animations
   ======================================== */
@keyframes rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.rotate {
    animation: rotate 2s linear infinite;
}

.rotate-slow {
    animation: rotate 4s linear infinite;
}

/* ========================================
   Bounce Animation
   ======================================== */
@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-20px);
    }
    60% {
        transform: translateY(-10px);
    }
}

.bounce {
    animation: bounce 2s infinite;
}

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

.shake {
    animation: shake 0.5s;
}

/* ========================================
   Pulse Animation
   ======================================== */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

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

/* ========================================
   Scroll Triggered Animations
   ======================================== */
.scroll-animate {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.scroll-animate.visible {
    opacity: 1;
    transform: translateY(0);
}

.scroll-animate-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.scroll-animate-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.scroll-animate-right {
    opacity: 0;
    transform: translateX(50px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.scroll-animate-right.visible {
    opacity: 1;
    transform: translateX(0);
}

.scroll-animate-scale {
    opacity: 0;
    transform: scale(0.9);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.scroll-animate-scale.visible {
    opacity: 1;
    transform: scale(1);
}

/* ========================================
   Staggered 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; }
.stagger-7 { animation-delay: 0.7s; }
.stagger-8 { animation-delay: 0.8s; }
.stagger-9 { animation-delay: 0.9s; }
.stagger-10 { animation-delay: 1s; }

/* ========================================
   Hover Animations
   ======================================== */
.hover-lift {
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.hover-lift:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.hover-grow {
    transition: transform var(--transition-base);
}

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

.hover-shrink {
    transition: transform var(--transition-base);
}

.hover-shrink:hover {
    transform: scale(0.95);
}

/* ========================================
   Loading Animations
   ======================================== */
@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    border-top-color: var(--color-primary);
    animation: spin 1s linear infinite;
}

.spinner-lg {
    width: 40px;
    height: 40px;
    border-width: 4px;
}

@keyframes loadingDots {
    0%, 80%, 100% {
        transform: scale(0);
    }
    40% {
        transform: scale(1);
    }
}

.loading-dots {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

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

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

/* ========================================
   Animation Utility Classes
   ======================================== */
.animate-none { animation: none !important; }
.animate-paused { animation-play-state: paused !important; }
.animate-running { animation-play-state: running !important; }

.transition-all { transition: all var(--transition-base); }
.transition-opacity { transition: opacity var(--transition-base); }
.transition-transform { transition: transform var(--transition-base); }
.transition-colors { transition: color var(--transition-base), background-color var(--transition-base), border-color var(--transition-base); }