/* ==========================================================================
   Animations
   Transitions, scroll-triggered effects, hover states, keyframe animations
   ========================================================================== */

/* ==========================================================================
   SCROLL ANIMATIONS - Multiple Variants
   Triggered by Intersection Observer in JavaScript
   ========================================================================== */

/* Default hidden state for all animated elements (prevents flash before JS) */
[data-animate] {
    opacity: 0 !important;
    transform: translateY(20px) !important;
    transition: opacity 0.6s ease-out, transform 0.6s ease-out !important;
}

/* Visible state - applied by JS when element enters viewport */
[data-animate].animate--visible {
    opacity: 1 !important;
    transform: translateY(0) !important;
}

/* ============================================
   Staggered delays for sequential animations
   ============================================ */
[data-animate-delay="100"].animate--visible {
    transition-delay: 80ms !important;
}

[data-animate-delay="200"].animate--visible {
    transition-delay: 160ms !important;
}

[data-animate-delay="300"].animate--visible {
    transition-delay: 240ms !important;
}

[data-animate-delay="400"].animate--visible {
    transition-delay: 320ms !important;
}

[data-animate-delay="500"].animate--visible {
    transition-delay: 400ms !important;
}

/* ==========================================================================
   HOVER ANIMATIONS - Cards
   ========================================================================== */

/* Card hover - lift effect */
.card {
    transition: transform var(--transition-slow) var(--ease-out),
                box-shadow var(--transition-slow) var(--ease-out),
                border-color var(--transition-base);
}

.card:hover {
    transform: translateY(-8px);
}

/* Card icon scale on hover */
.card__icon {
    transition: transform var(--transition-base) var(--ease-out),
                background-color var(--transition-base);
}

.card:hover .card__icon {
    transform: scale(1.1);
}

/* Stat card hover */
.stat-card {
    transition: transform var(--transition-slow) var(--ease-out),
                box-shadow var(--transition-slow) var(--ease-out);
}

.stat-card:hover {
    transform: translateY(-4px);
}

/* Case card hover */
.case-card {
    transition: transform var(--transition-slow) var(--ease-out),
                box-shadow var(--transition-slow) var(--ease-out);
}

.case-card:hover {
    transform: translateY(-4px);
}

/* Capability card hover */
.capability-card {
    transition: transform var(--transition-slow) var(--ease-out),
                box-shadow var(--transition-slow) var(--ease-out),
                border-color var(--transition-base);
}

.capability-card:hover {
    transform: translateY(-4px);
}

.capability-card__icon {
    transition: transform var(--transition-base) var(--ease-out);
}

.capability-card:hover .capability-card__icon {
    transform: scale(1.1);
}

/* Monitoring card hover */
.monitoring-card {
    transition: transform var(--transition-slow) var(--ease-out),
                box-shadow var(--transition-slow) var(--ease-out);
}

.monitoring-card:hover {
    transform: translateY(-4px);
}

.monitoring-card__icon {
    transition: transform var(--transition-base) var(--ease-out);
}

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

/* ==========================================================================
   HOVER ANIMATIONS - Buttons
   ========================================================================== */

/* Button hover lift */
.btn {
    transition: background-color var(--transition-base),
                border-color var(--transition-base),
                color var(--transition-base),
                transform var(--transition-base) var(--ease-out),
                box-shadow var(--transition-base);
}

.btn:hover {
    transform: translateY(-2px);
}

.btn:active {
    transform: translateY(0);
}

/* Button icon arrow animation */
.btn__icon {
    transition: transform var(--transition-base) var(--ease-out);
}

.btn:hover .btn__icon {
    transform: translateX(4px);
}

/* ==========================================================================
   HOVER ANIMATIONS - Links
   ========================================================================== */

/* Underline animation */
.link-underline {
    position: relative;
    display: inline-block;
}

.link-underline::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: currentColor;
    transition: width var(--transition-slow) var(--ease-out);
}

.link-underline:hover::after {
    width: 100%;
}

/* Nav link underline */
.nav__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-primary);
    transition: width var(--transition-slow) var(--ease-out);
}

.nav__link:hover::after {
    width: 100%;
}

/* ==========================================================================
   HEADER ANIMATIONS
   ========================================================================== */

/* Sticky header background transition */
.header {
    transition: background-color var(--transition-slow),
                box-shadow var(--transition-slow),
                backdrop-filter var(--transition-slow);
}

.header--scrolled {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow:
        0 1px 3px rgba(0, 0, 0, 0.05),
        0 4px 20px rgba(0, 0, 0, 0.03);
}

/* Mobile menu toggle animation */
.nav__toggle-bar {
    transition: transform var(--transition-base) var(--ease-out),
                opacity var(--transition-base);
}

.nav__toggle--active .nav__toggle-bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav__toggle--active .nav__toggle-bar:nth-child(2) {
    opacity: 0;
}

.nav__toggle--active .nav__toggle-bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Mobile menu slide animation */
.nav__menu--open {
    animation: slideDown var(--transition-slow) var(--ease-out);
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==========================================================================
   FORM ANIMATIONS
   ========================================================================== */

/* Input focus animation */
.form__input,
.form__textarea {
    transition: border-color var(--transition-base),
                box-shadow var(--transition-base);
}

.form__input:focus,
.form__textarea:focus {
    border-color: var(--color-primary-light);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
}

/* Submit button loading state */
.btn[disabled] {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none !important;
}

/* ==========================================================================
   LOGO AND BRAND ANIMATIONS
   ========================================================================== */

/* Logo hover */
.nav__logo {
    transition: color var(--transition-base),
                transform var(--transition-base);
}

.nav__logo:hover {
    color: var(--color-primary);
}

/* Footer logo hover */
.footer__logo {
    transition: opacity var(--transition-base);
}

.footer__logo:hover {
    opacity: 0.8;
}

/* Logo placeholder hover */
.logo-placeholder {
    transition: border-color var(--transition-base),
                color var(--transition-base),
                transform var(--transition-base);
}

.logo-item:hover .logo-placeholder {
    border-color: var(--color-primary-light);
    color: var(--color-gray-600);
    transform: translateY(-2px);
}

/* ==========================================================================
   SCREENSHOT PLACEHOLDER ANIMATIONS
   ========================================================================== */

.screenshot-placeholder {
    transition: border-color var(--transition-base),
                background-color var(--transition-base);
}

.screenshot-placeholder:hover {
    border-color: var(--color-gray-400);
    background-color: var(--color-gray-200);
}

.screenshot-placeholder__icon {
    transition: transform var(--transition-base);
}

.screenshot-placeholder:hover .screenshot-placeholder__icon {
    transform: scale(1.1);
}

/* ==========================================================================
   TESTIMONIAL ANIMATIONS
   ========================================================================== */

.testimonial {
    transition: transform var(--transition-slow),
                box-shadow var(--transition-slow);
}

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

/* ==========================================================================
   STEP ANIMATIONS
   ========================================================================== */

.step__number {
    transition: transform var(--transition-base),
                background-color var(--transition-base);
}

.step:hover .step__number {
    transform: scale(1.1);
    background-color: var(--color-primary-hover);
}

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

/* Pulse animation for badges or highlights */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

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

/* Float animation for hero elements */
@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

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

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

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

/* Slide up animation */
@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-slide-up {
    animation: slideUp var(--transition-slower) var(--ease-out);
}

/* Scale in animation */
@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

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

/* ==========================================================================
   REDUCED MOTION
   Respect user preferences for reduced motion
   ========================================================================== */

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

    .animate--hidden {
        opacity: 1;
        transform: none;
    }

    .animate--visible {
        transition: none;
    }

    .card:hover,
    .stat-card:hover,
    .case-card:hover,
    .btn:hover,
    .testimonial:hover {
        transform: none;
    }
}

/* ==========================================================================
   LOADING STATES
   ========================================================================== */

/* Skeleton loading animation */
@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }
    100% {
        background-position: 200% 0;
    }
}

.skeleton {
    background: linear-gradient(
        90deg,
        var(--color-gray-200) 25%,
        var(--color-gray-100) 50%,
        var(--color-gray-200) 75%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-md);
}

/* ==========================================================================
   FOCUS ANIMATIONS
   ========================================================================== */

/* Focus ring animation */
:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
    transition: outline-offset var(--transition-fast);
}

/* Button focus */
.btn:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 4px;
}

/* Input focus */
.form__input:focus-visible,
.form__textarea:focus-visible {
    outline: none;
}

/* ==========================================================================
   MARQUEE ANIMATION - Trusted By Logo Scroll
   ========================================================================== */

@keyframes marquee {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-50%);
    }
}

.trusted-by__track {
    animation: marquee 25s linear infinite;
}

@media (prefers-reduced-motion: reduce) {
    .trusted-by__track {
        animation: none;
    }
}