/* ==========================================================================
   AtListen Animations - Refined
   Clean, purposeful animations without overlap
   ========================================================================== */

/* Opening Sequence
   ========================================================================== */
.opening-sequence {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: var(--z-max);
    background: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.dotted-surface {
    position: absolute;
    inset: 0;
    z-index: 0;
    pointer-events: none;
}

.dotted-surface canvas {
    display: block;
}

.opening-sequence.complete {
    animation: sequenceExit 0.4s ease forwards;
}

@keyframes sequenceExit {
    to {
        opacity: 0;
        visibility: hidden;
    }
}

/* Infinity Stage */
.infinity-stage {
    position: absolute;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    animation: fadeIn 0.8s ease forwards;
}

.infinity-stage.exit {
    opacity: 0;
    transform: scale(0.9);
    filter: blur(20px);
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    pointer-events: none;
}

.infinity-loop {
    width: 280px;
    height: 140px;
    opacity: 0;
    transform: scale(0.9);
    animation: 
        scaleIn 0.3s cubic-bezier(0.34, 1.56, 0.64, 1) 0.15s forwards,
        gentleFloat 1.5s ease-in-out 0.75s infinite;
}

.infinity-path {
    fill: none;
    stroke: url(#infinityGradient);
    stroke-width: 10;
    stroke-linecap: round;
    stroke-linejoin: round;
    filter: url(#infinityGlow);
    stroke-dasharray: 580;
    stroke-dashoffset: 580;
    animation: 
        draw 1s ease 0.25s forwards,
        gentleGlow 1s ease-in-out 1.25s infinite;
}

@keyframes fadeIn {
    to { opacity: 1; }
}

@keyframes scaleIn {
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes gentleFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

@keyframes draw {
    to { stroke-dashoffset: 0; }
}

@keyframes gentleGlow {
    0%, 100% { filter: url(#infinityGlow) drop-shadow(0 0 10px rgba(139, 92, 246, 0.3)); }
    50% { filter: url(#infinityGlow) drop-shadow(0 0 20px rgba(59, 130, 246, 0.5)); }
}

/* Logo Reveal Stage */
.logo-reveal-stage {
    position: absolute;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transform: scale(0.95);
    pointer-events: none;
}

.logo-reveal-stage.active {
    opacity: 1;
    transform: scale(1);
    transition: opacity 0.4s ease, transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.logo-reveal-stage.exit {
    opacity: 0;
    transform: scale(1.05);
    filter: blur(8px);
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal-logo {
    width: 280px;
    height: auto;
    opacity: 0;
    transform: scale(0.98);
}

.logo-reveal-stage.active .reveal-logo {
    opacity: 1;
    transform: scale(1);
    transition: opacity 0.8s ease 0.1s, transform 0.8s cubic-bezier(0.34, 1.56, 0.64, 1) 0.1s;
}

/* Scroll Reveal - Clean and Simple */
.scroll-reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.scroll-reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger delays for grids */
.scroll-reveal[data-delay="100"] { transition-delay: 100ms; }
.scroll-reveal[data-delay="200"] { transition-delay: 200ms; }
.scroll-reveal[data-delay="300"] { transition-delay: 300ms; }
.scroll-reveal[data-delay="400"] { transition-delay: 400ms; }
.scroll-reveal[data-delay="500"] { transition-delay: 500ms; }
.scroll-reveal[data-delay="600"] { transition-delay: 600ms; }

/* Navigation */
.main-nav {
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.main-nav.scrolled {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.nav-link {
    position: relative;
    transition: color 0.2s ease;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-brand);
    transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

/* Button Animations */
.btn {
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px -8px rgba(139, 92, 246, 0.4);
}

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

.btn-primary {
    background-size: 200% auto;
    animation: gradientMove 3s ease infinite;
}

@keyframes gradientMove {
    0%, 100% { background-position: 0% center; }
    50% { background-position: 100% center; }
}

/* Card Hover Effects */
.problem-card,
.use-case-card,
.pricing-card,
.testimonial-card,
.blog-card,
.depth-option {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.problem-card:hover,
.use-case-card:hover,
.pricing-card:hover,
.testimonial-card:hover,
.blog-card:hover,
.depth-option:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px -12px rgba(0, 0, 0, 0.12);
}

/* Input Cards */
.input-card {
    transition: all 0.25s ease;
}

.input-card:hover {
    transform: translateY(-3px);
    border-color: var(--color-purple);
    box-shadow: 0 8px 24px -8px rgba(139, 92, 246, 0.15);
}

/* Output Cards */
.output-card {
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.output-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px -8px rgba(0, 0, 0, 0.08);
}

/* Depth Control Card */
.depth-control-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.depth-control-card:hover {
    transform: translateY(-2px);
}

.depth-stat {
    transition: background-color 0.2s ease;
}

.depth-stat:hover {
    background-color: rgba(139, 92, 246, 0.03);
}

.stat-value {
    transition: color 0.2s ease;
}

/* Carousel - Smooth */
.carousel-card.active {
    animation: cardFloat 4s ease-in-out infinite;
    box-shadow: 
        0 20px 40px -12px rgba(0, 0, 0, 0.12),
        0 0 0 1px rgba(139, 92, 246, 0.08);
}

@keyframes cardFloat {
    0%, 100% { 
        transform: translateX(0) rotateY(0) scale(1) translateY(0);
    }
    50% { 
        transform: translateX(0) rotateY(0) scale(1.01) translateY(-5px);
    }
}

/* Step Cards */
.step-card {
    transition: transform 0.3s ease, border-color 0.3s ease;
}

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

.step-icon {
    transition: transform 0.3s ease;
}

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

/* Footer Links */
.footer-links a {
    transition: color 0.2s ease;
}

.footer-links a:hover {
    color: var(--color-purple);
}

/* Social Links */
.social-link {
    transition: transform 0.2s ease, color 0.2s ease, background-color 0.2s ease;
}

.social-link:hover {
    transform: translateY(-3px);
    color: var(--color-purple);
    background-color: rgba(139, 92, 246, 0.08);
}

.social-link:focus-visible {
    outline: 2px solid var(--color-purple);
    outline-offset: 2px;
}

/* Form Inputs */
.form-group input,
.form-group textarea,
.form-group select {
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    border-color: var(--color-purple);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.1);
}

/* Hero Content Fade In (staggered per-element entrance) */
.hero-eyebrow,
.hero-title .title-line,
.hero-title-particle,
.hero-subtitle,
.hero-cta-group,
.hero-trust,
.hero-visual {
    opacity: 0;
}

.opening-complete .hero-eyebrow {
    animation: fadeIn 0.7s ease forwards;
}

.opening-complete .hero-title .title-line:nth-child(1) {
    animation: fadeIn 0.7s ease 0.16s forwards;
}

.opening-complete .hero-title .title-line:nth-child(2) {
    animation: fadeIn 0.7s ease 0.28s forwards;
}

.opening-complete .hero-title-particle {
    animation: fadeIn 0.7s ease 0.42s forwards;
}

.opening-complete .hero-subtitle {
    animation: fadeIn 0.7s ease 0.56s forwards;
}

.opening-complete .hero-cta-group {
    animation: fadeIn 0.7s ease 0.7s forwards;
}

.opening-complete .hero-trust {
    animation: fadeIn 0.7s ease 0.82s forwards;
}

.opening-complete .hero-visual {
    animation: fadeIn 0.8s ease 0.3s forwards;
}

@media (prefers-reduced-motion: reduce) {
    .hero-eyebrow,
    .hero-title .title-line,
    .hero-title-particle,
    .hero-subtitle,
    .hero-cta-group,
    .hero-trust,
    .hero-visual {
        opacity: 1;
        animation: none !important;
    }
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Blog Image Hover */
.blog-image {
    overflow: hidden;
}

.blog-image-placeholder {
    transition: transform 0.5s ease;
}

.blog-card:hover .blog-image-placeholder {
    transform: scale(1.03);
}

/* Mobile Menu */
.mobile-menu-toggle span {
    transition: transform 0.3s ease;
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    transform: rotate(-45deg);
}

.mobile-nav-overlay {
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.mobile-nav-overlay.active {
    opacity: 1;
    visibility: visible;
}

.mobile-nav-link {
    opacity: 0;
    transform: translateX(-16px);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.mobile-nav-overlay.active .mobile-nav-link {
    opacity: 1;
    transform: translateX(0);
}

.mobile-nav-overlay.active .mobile-nav-link:nth-child(1) { transition-delay: 50ms; }
.mobile-nav-overlay.active .mobile-nav-link:nth-child(2) { transition-delay: 100ms; }
.mobile-nav-overlay.active .mobile-nav-link:nth-child(3) { transition-delay: 150ms; }
.mobile-nav-overlay.active .mobile-nav-link:nth-child(4) { transition-delay: 200ms; }
.mobile-nav-overlay.active .mobile-nav-link:nth-child(5) { transition-delay: 250ms; }
.mobile-nav-overlay.active .mobile-nav-link:nth-child(6) { transition-delay: 300ms; }
.mobile-nav-overlay.active .mobile-nav-link:nth-child(7) { transition-delay: 350ms; }
.mobile-nav-overlay.active .mobile-nav-link:nth-child(8) { transition-delay: 400ms; }

/* Pricing Featured */
.pricing-card.featured {
    position: relative;
}

.pricing-card.featured::before {
    content: '';
    position: absolute;
    inset: -2px;
    background: var(--gradient-brand);
    border-radius: inherit;
    z-index: -1;
    opacity: 0.5;
    animation: borderGlow 2s ease-in-out infinite;
}

@keyframes borderGlow {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 0.6; }
}

/* Founder Card photo border — the line draws clockwise from the top-left corner
   (the browser's own start point/winding for a rounded <rect> path) until the
   full box is outlined, holds, then fades for the next pass. The checkmark pops
   in right as the loop closes. Same duration on both keeps them phase-locked.
   The resting styles for .founder-checkmark (pages.css) already describe the
   fully-visible end state, so the sitewide reduced-motion rule below (which caps
   iteration-count at 1 with no fill-mode) naturally lands there on its own. */
.founder-checkmark {
    animation: founderCheckPop 4.5s ease-in-out infinite;
}

@keyframes founderOutlineDraw {
    0%      { stroke-dashoffset: 100; opacity: 1; }
    45%     { stroke-dashoffset: 0; opacity: 1; }
    80%     { stroke-dashoffset: 0; opacity: 1; }
    92%     { stroke-dashoffset: 0; opacity: 0; }
    92.01%  { stroke-dashoffset: 100; opacity: 0; }
    100%    { stroke-dashoffset: 100; opacity: 0; }
}

@keyframes founderCheckPop {
    0%, 40%   { opacity: 0; transform: scale(0.4); }
    50%       { opacity: 1; transform: scale(1.15); }
    56%, 80%  { opacity: 1; transform: scale(1); }
    92%, 100% { opacity: 0; transform: scale(0.4); }
}

/* Founder Card throw-in — plays once when .founder-visual (main.js FounderCard)
   scrolls into view. The card flies in small/rotated/motion-blurred from off the
   section's edge (clipped by .founder-section's overflow:hidden, so it reads as
   entering the frame rather than overflowing the page), spins through an
   overshoot past its resting size/angle, and settles with a bounce — landing
   exactly on the card's normal static styles so nothing needs a forwards-frozen
   approximation of them. The glow pulse + trail streaks are keyed to the same
   landing moment for one cohesive "thud" instead of independent effects. */
.founder-visual.is-thrown .founder-card {
    animation: founderCardThrow 1.25s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.founder-visual.is-thrown::before {
    animation: founderTrailA 1.15s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.founder-visual.is-thrown::after {
    animation: founderTrailB 1.15s cubic-bezier(0.16, 1, 0.3, 1) both;
    animation-delay: 0.03s;
}

.founder-visual.is-thrown .founder-glow {
    animation: founderGlowPulse 1.25s cubic-bezier(0.16, 1, 0.3, 1) both;
}

@keyframes founderCardThrow {
    0% {
        opacity: 0;
        transform: translate3d(48%, -36%, 0) scale(0.5) rotate(28deg) rotateY(-62deg);
        filter: blur(9px) brightness(1.35) saturate(1.2);
    }
    5%  { opacity: 1; }
    16% {
        transform: translate3d(24%, -20%, 0) scale(0.72) rotate(20deg) rotateY(-40deg);
        filter: blur(5px) brightness(1.2);
    }
    38% {
        transform: translate3d(-6%, 8%, 0) scale(1.06) rotate(-13deg) rotateY(9deg);
        filter: blur(1.5px) brightness(1.05);
    }
    56% {
        transform: translate3d(1.8%, -3.5%, 0) scale(0.98) rotate(5deg) rotateY(-3deg);
        filter: blur(0) brightness(1.02);
    }
    72% {
        transform: translate3d(-0.8%, 1.6%, 0) scale(1.015) rotate(-2deg) rotateY(1deg);
        filter: blur(0) brightness(1);
    }
    86% {
        transform: translate3d(0.3%, -0.6%, 0) scale(0.996) rotate(0.8deg) rotateY(0deg);
    }
    100% {
        opacity: 1;
        transform: translate3d(0, 0, 0) scale(1) rotate(0deg) rotateY(0deg);
        filter: blur(0) brightness(1);
    }
}

@keyframes founderTrailA {
    0%   { opacity: 0; transform: translate3d(60px, -60px, 0) rotate(28deg) scaleX(0.4); }
    12%  { opacity: 0.9; transform: translate3d(10px, -14px, 0) rotate(24deg) scaleX(1); }
    30%  { opacity: 0.5; transform: translate3d(-30px, 20px, 0) rotate(16deg) scaleX(0.85); }
    45%  { opacity: 0; transform: translate3d(-50px, 34px, 0) rotate(10deg) scaleX(0.6); }
    100% { opacity: 0; }
}

@keyframes founderTrailB {
    0%   { opacity: 0; transform: translate3d(50px, -50px, 0) rotate(28deg) scaleX(0.4); }
    16%  { opacity: 0.75; transform: translate3d(4px, -8px, 0) rotate(22deg) scaleX(1); }
    34%  { opacity: 0.4; transform: translate3d(-26px, 22px, 0) rotate(14deg) scaleX(0.8); }
    50%  { opacity: 0; transform: translate3d(-40px, 32px, 0) rotate(8deg) scaleX(0.55); }
    100% { opacity: 0; }
}

@keyframes founderGlowPulse {
    0%, 40% { opacity: 0; transform: translateX(-50%) scale(0.55); filter: brightness(1); }
    56%     { opacity: 1; transform: translateX(-50%) scale(1.35); filter: brightness(1.6); }
    100%    { opacity: 1; transform: translateX(-50%) scale(1); filter: brightness(1); }
}

/* Replay button feedback — a quick icon spin on click, independent of the card's
   own throw animation (main.js toggles .is-spinning for the click duration). */
.founder-replay-btn.is-spinning svg {
    animation: founderReplaySpin 0.6s ease;
}

@keyframes founderReplaySpin {
    from { transform: rotate(0deg); }
    to   { transform: rotate(-360deg); }
}

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