/* Process: этапы работы и их анимация появления. */

/* Каркас секции */
#how-it-works-section {
    padding-block: clamp(6.5rem, 10vw, 8rem);
    scroll-margin-top: 5rem;
    isolation: isolate;
    overflow: hidden;
}

#how-it-works-section .how-it-works {
    width: 100%;
    padding: 0;
    background: transparent;
}

#how-it-works-section .container {
    max-width: 1320px;
}

/* Заголовок */
#how-it-works-section .section-header {
    max-width: 680px;
    margin: 0 auto;
    padding: 0;
}

#how-it-works-section .section-header h2 {
    font-size: clamp(2.35rem, 4vw, 3.35rem);
    letter-spacing: -0.045em;
    text-wrap: balance;
}

#how-it-works-section .section-header p {
    max-width: 52ch;
    font-size: clamp(1rem, 1.25vw, 1.12rem);
    line-height: 1.6;
    text-wrap: pretty;
}

/* Линия процесса */
#how-it-works-section .process-steps {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: clamp(1rem, 2vw, 1.6rem);
    margin-top: clamp(3.25rem, 5vw, 4.5rem);
    position: relative;
    list-style: none;
}

#how-it-works-section .process-steps.is-reveal-ready::before {
    transform: scaleX(0);
    transform-origin: left center;
}

#how-it-works-section .process-steps.is-reveal-ready.visible::before {
    transform: scaleX(1);
    transition: transform 760ms cubic-bezier(0.22, 1, 0.36, 1);
}

#how-it-works-section .process-steps::before {
    content: '';
    position: absolute;
    top: 30px;
    left: 10%;
    right: 10%;
    height: 2px;
    z-index: 0;
    background: linear-gradient(90deg, transparent, var(--border), transparent);
}

/* Карточки этапов */
#how-it-works-section .step-card {
    min-width: 0;
    position: relative;
    z-index: 1;
    text-align: center;
}

#how-it-works-section .step-content {
    padding: 0 0.75rem 1rem;
}

#how-it-works-section .step-number {
    width: 60px;
    height: 60px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    background: var(--bg-card);
    border: 2px solid var(--accent);
    border-radius: 50%;
    box-shadow: 0 0 10px rgba(96, 165, 250, 0.18);
    font-size: 1.5rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    transition: color 0.15s ease, background-color 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease;
}

#how-it-works-section .step-card:hover .step-number {
    color: white;
    background: var(--accent);
    box-shadow: 0 0 15px rgba(0, 119, 255, 0.28);
    transform: scale(1.1);
}

#how-it-works-section .step-card h3 {
    margin-bottom: 0.7rem;
    color: var(--text-primary);
    font-size: clamp(1.08rem, 1.3vw, 1.22rem);
    line-height: 1.25;
    text-wrap: balance;
}

#how-it-works-section .step-card p {
    max-width: 31ch;
    margin-inline: auto;
    color: var(--text-secondary);
    font-size: 0.94rem;
    line-height: 1.62;
    text-wrap: pretty;
}

/* Состояния появления */
#how-it-works-section .process-steps.is-reveal-ready .step-card {
    opacity: 0;
    transform: translateY(24px);
    filter: blur(4px);
}

#how-it-works-section .process-steps.is-reveal-ready .step-number {
    opacity: 0;
    transform: scale(0.78);
}

#how-it-works-section .process-steps.is-reveal-ready.visible .step-card {
    opacity: 1;
    transform: translateY(0);
    filter: blur(0);
    transition-property: opacity, transform, filter;
    transition-duration: 520ms;
    transition-timing-function: cubic-bezier(0.22, 1, 0.36, 1);
    transition-delay: var(--step-delay, 0ms);
}

#how-it-works-section .process-steps.is-reveal-ready.visible .step-number {
    opacity: 1;
    transform: scale(1);
    transition-property: opacity, transform, box-shadow, color, background-color;
    transition-duration: 520ms;
    transition-timing-function: cubic-bezier(0.22, 1, 0.36, 1);
    transition-delay: calc(var(--step-delay, 0ms) + 90ms);
}

/* Адаптивная компоновка */
@media (max-width: 1080px) {
    #how-it-works-section {
        padding-block: clamp(5.75rem, 9vw, 7rem);
    }

    #how-it-works-section .process-steps {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 3.5rem 2rem;
    }

    #how-it-works-section .process-steps::before {
        display: none;
    }

    #how-it-works-section .step-content {
        padding: 0 1rem 0.5rem;
    }

    #how-it-works-section .step-number {
        margin-bottom: 1.1rem;
    }

    #how-it-works-section .step-card p {
        max-width: 40ch;
    }
}

@media (max-width: 600px) {
    #how-it-works-section {
        padding-block: 5.25rem;
    }

    #how-it-works-section .container {
        padding-inline: 1rem;
    }

    #how-it-works-section .section-header {
        padding-inline: 0.45rem;
    }

    #how-it-works-section .section-header h2 {
        margin-bottom: 0.8rem;
        font-size: clamp(2.05rem, 10vw, 2.55rem);
    }

    #how-it-works-section .section-header p {
        font-size: 0.96rem;
        line-height: 1.55;
    }

    #how-it-works-section .process-steps {
        grid-template-columns: 1fr;
        gap: 3.5rem;
        margin-top: 3.25rem;
    }

    #how-it-works-section .process-steps::before {
        display: none;
    }

    #how-it-works-section .step-card {
        text-align: center;
    }

    #how-it-works-section .process-steps.is-reveal-ready .step-card {
        transform: translateY(24px);
    }

    #how-it-works-section .process-steps.is-reveal-ready.visible .step-card {
        transform: translateY(0);
    }

    #how-it-works-section .step-content {
        min-height: 0;
        padding: 0 0.5rem;
    }

    #how-it-works-section .step-number {
        position: static;
        width: 50px;
        height: 50px;
        margin: 0 auto 1rem;
        font-size: 1.3rem;
    }

    #how-it-works-section .process-steps.is-reveal-ready .step-number {
        transform: translateY(10px) scale(0.78);
    }

    #how-it-works-section .process-steps.is-reveal-ready.visible .step-number {
        transform: translateY(0) scale(1);
    }

    #how-it-works-section .step-card h3 {
        margin-bottom: 0.6rem;
        font-size: 1.07rem;
        text-align: center;
    }

    #how-it-works-section .step-card p {
        max-width: 34ch;
        margin: 0 auto;
        font-size: 0.9rem;
        line-height: 1.55;
        text-align: center;
    }
}

/* Уменьшенное движение */
@media (prefers-reduced-motion: reduce) {
    #how-it-works-section .process-steps.is-reveal-ready .step-card,
    #how-it-works-section .process-steps.is-reveal-ready.visible .step-card {
        opacity: 1;
        transform: none;
        filter: none;
        transition: none;
    }

    #how-it-works-section .process-steps.is-reveal-ready .step-number,
    #how-it-works-section .process-steps.is-reveal-ready.visible .step-number {
        opacity: 1;
        transform: none;
        transition: none;
    }

    #how-it-works-section .process-steps.is-reveal-ready::before,
    #how-it-works-section .process-steps.is-reveal-ready.visible::before {
        transform: none;
        transition: none;
    }

    #how-it-works-section .step-number {
        transition: none;
    }
}