/* ========================================
   Rhythmwalker - Animation Styles
   ======================================== */

/* ========================================
   Keyframe Animations
   ======================================== */

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

/* Fade In Up */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Fade In Down */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Slide In Left */
@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Slide In Right */
@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

/* ========================================
   Animation Classes
   ======================================== */

/* Initial state - hidden */
.animate-on-scroll {
    opacity: 0;
}

/* Visible state - animated */
.animate-on-scroll.visible {
    animation-duration: 0.8s;
    animation-fill-mode: both;
    animation-timing-function: ease-out;
}

/* Animation types */
.fade-in.visible {
    animation-name: fadeIn;
}

.fade-in-up.visible {
    animation-name: fadeInUp;
}

.fade-in-down.visible {
    animation-name: fadeInDown;
}

.slide-in-left.visible {
    animation-name: slideInLeft;
}

.slide-in-right.visible {
    animation-name: slideInRight;
}

.scale-in.visible {
    animation-name: scaleIn;
}

/* ========================================
   Page Load Animations
   ======================================== */

/* Delay classes for staggered animations */
.delay-1 {
    animation-delay: 0.1s;
}

.delay-2 {
    animation-delay: 0.2s;
}

.delay-3 {
    animation-delay: 0.3s;
}

.delay-4 {
    animation-delay: 0.4s;
}

.delay-5 {
    animation-delay: 0.5s;
}

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

.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: #ffffff;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

/* ========================================
   Smooth Transitions
   ======================================== */

/* Links */
a {
    transition: color var(--transition-speed), opacity var(--transition-speed);
}

/* Buttons */
button {
    transition: all var(--transition-speed);
}

/* Form controls */
.form-control {
    transition: border-color var(--transition-speed), box-shadow var(--transition-speed);
}

/* Images */
img {
    transition: opacity var(--transition-speed);
}

img[loading="lazy"] {
    opacity: 0;
}

img[loading="lazy"].loaded {
    opacity: 1;
}

/* ========================================
   Hover Effects
   ======================================== */

/* Navigation hover effect */
.nav-link {
    position: relative;
    overflow: hidden;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 80%;
    height: 1px;
    background-color: var(--color-text-light);
    transition: transform var(--transition-speed);
}

.nav-link:hover::after {
    transform: translateX(-50%) scaleX(1);
}

/* Button hover effect */
.submit-btn {
    position: relative;
    overflow: hidden;
}

.submit-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0);
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transition: transform 0.5s;
}

.submit-btn:hover::before {
    transform: translate(-50%, -50%) scale(2);
}

/* Image hover effect */
.service-icon img,
.hero-image img {
    transition: transform var(--transition-speed);
}

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

/* ========================================
   Modal Animations
   ======================================== */
.modal {
    transition: opacity 0.3s ease;
}

.modal.active {
    animation: fadeIn 0.3s ease;
}

.modal.active .modal-content {
    animation: scaleIn 0.3s ease;
}

/* ========================================
   Pulse Animation (for attention)
   ======================================== */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

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

/* ========================================
   Skeleton Loading (for lazy loaded images)
   ======================================== */
@keyframes skeleton-loading {
    0% {
        background-position: -200px 0;
    }
    100% {
        background-position: calc(200px + 100%) 0;
    }
}

.skeleton {
    background-color: #e0e0e0;
    background-image: linear-gradient(
        90deg,
        #e0e0e0 0px,
        #f0f0f0 40px,
        #e0e0e0 80px
    );
    background-size: 200px 100%;
    animation: skeleton-loading 1.5s infinite;
}