/* =========================
   1. ОСНОВНЫЕ НАСТРОЙКИ
========================= */

:root {
    --color-bg: #ffffff;
    --color-bg-soft: #f5f8ff;
    --color-primary: #2864e8;
    --color-primary-dark: #174bc0;
    --color-text: #172033;
    --color-muted: #68738a;
    --color-border: #e4eaf4;
    --color-card: #ffffff;

    --shadow-small: 0 8px 24px rgba(23, 43, 77, 0.06);
    --shadow-large: 0 22px 60px rgba(23, 43, 77, 0.12);

    --radius-small: 12px;
    --radius-medium: 20px;
    --radius-large: 30px;

    --container-width: 1120px;
    --transition: 0.25s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 100px;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

body.menu-open {
    overflow: hidden;
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    font: inherit;
}

button,
a {
    -webkit-tap-highlight-color: transparent;
}

button:focus-visible,
a:focus-visible {
    outline: 3px solid rgba(40, 100, 232, 0.4);
    outline-offset: 4px;
}

button:disabled {
    cursor: not-allowed;
    opacity: 0.6;
}

img {
    display: block;
    max-width: 100%;
}

.container {
    width: min(var(--container-width), calc(100% - 40px));
    margin-inline: auto;
}

.section {
    padding: 100px 0;
}

.section-heading {
    max-width: 650px;
    margin: 0 auto 48px;
    text-align: center;
}

.section-heading__label {
    margin-bottom: 12px;
    color: var(--color-primary);
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.section-heading h2,
.contacts__box h2 {
    margin-bottom: 16px;
    font-size: clamp(2rem, 4vw, 3rem);
    line-height: 1.15;
    letter-spacing: -0.045em;
}

.section-heading>p:last-child {
    color: var(--color-muted);
    font-size: 1rem;
}


/* =========================
   2. ШАПКА И НАВИГАЦИЯ
========================= */

.header {
    position: sticky;
    z-index: 100;
    top: 0;
    background: rgba(255, 255, 255, 0.92);
    border-bottom: 1px solid rgba(228, 234, 244, 0.8);
    backdrop-filter: blur(16px);
}

.header__inner {
    min-height: 78px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.logo {
    flex-shrink: 0;
    font-size: 1.65rem;
    font-weight: 800;
    letter-spacing: -0.07em;
}

.logo span {
    color: var(--color-primary);
}

.navigation {
    display: flex;
    align-items: center;
    gap: 26px;
}

.navigation__link {
    color: var(--color-muted);
    font-size: 0.92rem;
    transition: color var(--transition);
}

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

.header__contact {
    padding: 11px 17px;
    color: #fff;
    background: var(--color-primary);
    border-radius: 10px;
    font-size: 0.9rem;
    font-weight: 700;
    transition:
        background var(--transition),
        transform var(--transition);
}

.header__contact:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
}

.menu-toggle {
    display: none;
    width: 44px;
    height: 44px;
    padding: 10px;
    background: var(--color-bg-soft);
    border: 1px solid var(--color-border);
    border-radius: 10px;
    cursor: pointer;
}

.menu-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    margin: 5px 0;
    background: var(--color-text);
    border-radius: 5px;
    transition: transform var(--transition), opacity var(--transition);
}

.menu-toggle.is-active span:first-child {
    transform: translateY(7px) rotate(45deg);
}

.menu-toggle.is-active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.is-active span:last-child {
    transform: translateY(-7px) rotate(-45deg);
}


/* =========================
   3. ГЛАВНЫЙ ЭКРАН
========================= */

.hero {
    position: relative;
    overflow: hidden;
    padding: 100px 0 110px;
    background:
        radial-gradient(circle at 80% 25%,
            rgba(40, 100, 232, 0.09),
            transparent 32%),
        linear-gradient(180deg, #fff 0%, #f8faff 100%);
}

.hero__inner {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    align-items: center;
    gap: 64px;
}

.hero__content {
    max-width: 620px;
}

.hero__label {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    margin-bottom: 24px;
    padding: 9px 13px;
    color: #2453ad;
    background: #eaf1ff;
    border: 1px solid #dce7ff;
    border-radius: 100px;
    font-size: 0.83rem;
    font-weight: 700;
}

.status-dot {
    width: 8px;
    height: 8px;
    flex-shrink: 0;
    background: #20b981;
    border-radius: 50%;
    box-shadow: 0 0 0 4px rgba(32, 185, 129, 0.12);
}

.hero h1 {
    max-width: 650px;
    margin-bottom: 24px;
    font-size: clamp(2.8rem, 6vw, 4.7rem);
    line-height: 1.05;
    letter-spacing: -0.065em;
}

.hero h1 span {
    color: var(--color-primary);
}

.hero__description {
    max-width: 550px;
    margin-bottom: 30px;
    color: var(--color-muted);
    font-size: 1.08rem;
    line-height: 1.85;
}

.hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 13px;
}

.button {
    display: inline-flex;
    min-height: 50px;
    align-items: center;
    justify-content: center;
    padding: 13px 21px;
    border: 1px solid transparent;
    border-radius: 12px;
    font-size: 0.94rem;
    font-weight: 700;
    text-align: center;
    cursor: pointer;
    transition:
        transform var(--transition),
        background var(--transition),
        box-shadow var(--transition);
}

.button:hover {
    transform: translateY(-3px);
}

.button--primary {
    color: #fff;
    background: var(--color-primary);
    box-shadow: 0 8px 22px rgba(40, 100, 232, 0.2);
}

.button--primary:hover {
    background: var(--color-primary-dark);
    box-shadow: 0 12px 28px rgba(40, 100, 232, 0.28);
}

.button--secondary {
    color: var(--color-text);
    background: #fff;
    border-color: var(--color-border);
}

.button--secondary:hover {
    border-color: #b8cbf7;
    box-shadow: var(--shadow-small);
}

.hero__technologies {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 34px;
}

.hero__technologies span,
.project-card__tags span {
    padding: 6px 11px;
    color: #4f5e78;
    background: #edf2fa;
    border-radius: 7px;
    font-size: 0.8rem;
    font-weight: 700;
}


/* Иллюстрация с кодом */

.hero__visual {
    position: relative;
    width: 100%;
    max-width: 460px;
    justify-self: end;
    padding: 24px;
}

.visual-card {
    position: relative;
    overflow: hidden;
    color: #dce8ff;
    background: #101a2d;
    border: 1px solid #263751;
    border-radius: var(--radius-medium);
    box-shadow: 0 28px 70px rgba(17, 31, 56, 0.2);
    transform: rotate(1.5deg);
    transition: transform 0.4s ease;
}

.hero__visual:hover .visual-card {
    transform: rotate(0deg) translateY(-4px);
}

.visual-card__top {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 16px 18px;
    background: #17243a;
    border-bottom: 1px solid #28364d;
}

.visual-card__top>span {
    width: 9px;
    height: 9px;
    background: #fa6d75;
    border-radius: 50%;
}

.visual-card__top>span:nth-child(2) {
    background: #f6c65b;
}

.visual-card__top>span:nth-child(3) {
    background: #4bd49b;
}

.visual-card__top p {
    margin-left: 10px;
    color: #9aacc8;
    font-size: 0.77rem;
}

.visual-card__code {
    min-height: 245px;
    padding: 28px;
    font-family: Consolas, Monaco, monospace;
    font-size: 0.94rem;
    line-height: 1.9;
}

.code-indent {
    padding-left: 24px;
}

.code-blue {
    color: #76b9ff;
}

.code-purple {
    color: #c3a0ff;
}

.code-green {
    color: #7ee2b8;
}

.visual-card__footer {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 15px 20px;
    color: #9aacc8;
    background: #17243a;
    border-top: 1px solid #28364d;
    font-size: 0.77rem;
}

.floating-badge {
    position: absolute;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 62px;
    height: 62px;
    color: #fff;
    background: var(--color-primary);
    border: 4px solid #fff;
    border-radius: 18px;
    box-shadow: var(--shadow-large);
    font-weight: 800;
}

.floating-badge--html {
    top: 0;
    right: 0;
    transform: rotate(9deg);
}

.floating-badge--js {
    bottom: 0;
    left: 0;
    color: #202b3d;
    background: #ffdf69;
    transform: rotate(-9deg);
}


/* =========================
   4. ОБО МНЕ
========================= */

.about {
    background: #fff;
}

.about__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: start;
    gap: 60px;
}

.about__text h3,
.skills-card h3 {
    margin-bottom: 18px;
    font-size: 1.45rem;
    letter-spacing: -0.03em;
}

.about__text p {
    margin-bottom: 17px;
    color: var(--color-muted);
    line-height: 1.9;
}

.text-link {
    display: inline-block;
    margin-top: 8px;
    color: var(--color-primary);
    font-weight: 700;
}

.text-link:hover {
    color: var(--color-primary-dark);
}

.skills-card {
    padding: 30px;
    background: var(--color-bg-soft);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-medium);
}

.skill {
    margin-top: 23px;
}

.skill__info {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 10px;
    font-size: 0.9rem;
}

.skill__info span:first-child {
    font-weight: 700;
}

.skill__info span:last-child {
    color: var(--color-muted);
    font-size: 0.8rem;
    text-align: right;
}

.skill__bar {
    height: 8px;
    overflow: hidden;
    background: #e0e8f5;
    border-radius: 20px;
}

.skill__progress {
    height: 100%;
    background: linear-gradient(90deg, #2864e8, #6ca4ff);
    border-radius: inherit;
}

/* Декоративные индикаторы — не объективная оценка навыков */
.skill__progress--html {
    width: 80%;
}

.skill__progress--css {
    width: 70%;
}

.skill__progress--js {
    width: 45%;
}

.skills-card__note {
    margin-top: 24px;
    color: var(--color-muted);
    font-size: 0.83rem;
    line-height: 1.7;
}


/* =========================
   5. ПРОЕКТЫ И ФИЛЬТР
========================= */

.projects {
    background: var(--color-bg-soft);
}

.project-filters {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin-bottom: 36px;
}

.filter-button {
    padding: 10px 17px;
    color: var(--color-muted);
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: 100px;
    cursor: pointer;
    transition:
        color var(--transition),
        background var(--transition),
        border-color var(--transition);
}

.filter-button:hover {
    color: var(--color-primary);
    border-color: #b8cbf7;
}

.filter-button.is-active {
    color: #fff;
    background: var(--color-primary);
    border-color: var(--color-primary);
}

.projects__grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: stretch;
    gap: 24px;
}

.project-card {
    overflow: hidden;
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-medium);
    box-shadow: var(--shadow-small);
    transition:
        transform var(--transition),
        box-shadow var(--transition);
}

.project-card:hover {
    transform: translateY(-7px);
    box-shadow: var(--shadow-large);
}

.project-card.is-hidden {
    display: none;
}

.project-card__preview {
    position: relative;
    display: flex;
    min-height: 205px;
    flex-direction: column;
    justify-content: space-between;
    overflow: hidden;
    padding: 22px;
}

.project-card__preview::after {
    position: absolute;
    right: -45px;
    bottom: -80px;
    width: 200px;
    height: 200px;
    content: "";
    background: rgba(255, 255, 255, 0.16);
    border: 1px solid rgba(255, 255, 255, 0.4);
    border-radius: 50%;
}

.project-card__preview--one {
    color: #fff;
    background: linear-gradient(135deg, #2864e8, #8bafff);
}

.project-card__preview--two {
    color: #fff;
    background: linear-gradient(135deg, #172033, #53647f);
}

.project-card__preview--three {
    color: #203354;
    background: linear-gradient(135deg, #d9e9ff, #a6c9ff);
}

.project-card__number {
    position: relative;
    z-index: 1;
    font-size: 2.7rem;
    font-weight: 800;
    letter-spacing: -0.06em;
}

.preview-label {
    position: relative;
    z-index: 1;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.1em;
}

.project-card__content {
    padding: 25px;
}

.project-card__type {
    margin-bottom: 7px;
    color: var(--color-primary);
    font-size: 0.8rem;
    font-weight: 700;
}

.project-card__content h3 {
    margin-bottom: 12px;
    font-size: 1.3rem;
    letter-spacing: -0.03em;
}

.project-card__content>p:not(.project-card__type) {
    min-height: 78px;
    color: var(--color-muted);
    font-size: 0.92rem;
    line-height: 1.75;
}

.project-card__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
    margin: 18px 0 21px;
}

.project-card__tags span {
    padding: 5px 9px;
    font-size: 0.73rem;
}

.project-card__link {
    display: inline-block;
    color: var(--color-primary);
    font-size: 0.9rem;
    font-weight: 700;
    transition: color var(--transition);
}

.project-card__link:hover {
    color: var(--color-primary-dark);
}


/* =========================
   6. УСЛУГИ
========================= */

.services {
    background: #fff;
}

.services__grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
}

.service-card {
    padding: 30px;
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-medium);
    transition:
        transform var(--transition),
        border-color var(--transition),
        box-shadow var(--transition);
}

.service-card:hover {
    transform: translateY(-5px);
    border-color: #c3d5ff;
    box-shadow: var(--shadow-small);
}

.service-card__icon {
    display: flex;
    width: 54px;
    height: 54px;
    align-items: center;
    justify-content: center;
    margin-bottom: 23px;
    color: var(--color-primary);
    background: #eaf1ff;
    border-radius: 15px;
    font-family: Consolas, Monaco, monospace;
    font-size: 1.15rem;
    font-weight: 800;
}

.service-card h3 {
    margin-bottom: 12px;
    font-size: 1.15rem;
}

.service-card p {
    color: var(--color-muted);
    font-size: 0.93rem;
    line-height: 1.8;
}


/* =========================
   7. КОНТАКТЫ
========================= */

.contacts {
    background: var(--color-bg-soft);
}

.contacts__box {
    position: relative;
    overflow: hidden;
    max-width: 900px;
    margin: 0 auto;
    padding: 65px 30px;
    background:
        radial-gradient(circle at 90% 0%,
            rgba(98, 151, 255, 0.3),
            transparent 35%),
        #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-large);
    text-align: center;
    box-shadow: var(--shadow-small);
}

.contacts__box h2 {
    max-width: 650px;
    margin-inline: auto;
}

.contacts__box>p:not(.section-heading__label):not(.copy-status) {
    max-width: 570px;
    margin: 0 auto 26px;
    color: var(--color-muted);
}

.contacts__box .button {
    margin: 0 auto;
}

.copy-button {
    display: block;
    margin: 18px auto 0;
    padding: 8px 12px;
    color: var(--color-muted);
    background: transparent;
    border: 0;
    border-radius: 8px;
    font-size: 0.86rem;
    cursor: pointer;
    transition: color var(--transition);
}

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

.copy-status {
    min-height: 24px;
    margin-top: 8px;
    color: #16845e;
    font-size: 0.85rem;
}


/* =========================
   8. ПОДВАЛ
========================= */

.footer {
    padding: 28px 0;
    background: #fff;
    border-top: 1px solid var(--color-border);
}

.footer__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.footer .logo {
    font-size: 1.4rem;
}

.footer p,
.footer__inner>a:last-child {
    color: var(--color-muted);
    font-size: 0.85rem;
}

.footer__inner>a:last-child:hover {
    color: var(--color-primary);
}


/* =========================
   9. АНИМАЦИИ ПОЯВЛЕНИЯ
========================= */

.js-ready .reveal {
    opacity: 0;
    transform: translateY(22px);
    transition:
        opacity 0.65s ease,
        transform 0.65s ease;
}

.js-ready .reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}


/* =========================
   10. ПЛАНШЕТЫ
========================= */

@media (max-width: 1000px) {
    .navigation {
        gap: 15px;
    }

    .navigation__link {
        font-size: 0.86rem;
    }

    .header__inner {
        gap: 16px;
    }

    .hero__inner {
        gap: 25px;
    }

    .hero h1 {
        font-size: clamp(2.6rem, 5vw, 3.8rem);
    }

    .projects__grid,
    .services__grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}


/* =========================
   11. МОБИЛЬНЫЕ УСТРОЙСТВА
========================= */

@media (max-width: 760px) {
    .container {
        width: min(100% - 32px, var(--container-width));
    }

    .section {
        padding: 72px 0;
    }

    .header__inner {
        min-height: 70px;
    }

    .menu-toggle {
        display: block;
        order: 3;
    }

    .header__contact {
        margin-left: auto;
        padding: 10px 12px;
        font-size: 0.8rem;
    }

    .navigation {
        position: fixed;
        top: 70px;
        right: 0;
        left: 0;
        display: flex;
        visibility: hidden;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: 14px 20px 22px;
        background: #fff;
        border-bottom: 1px solid var(--color-border);
        box-shadow: var(--shadow-large);
        opacity: 0;
        transform: translateY(-8px);
        transition:
            opacity var(--transition),
            transform var(--transition),
            visibility var(--transition);
    }

    .navigation.is-open {
        visibility: visible;
        opacity: 1;
        transform: translateY(0);
    }

    .navigation__link {
        padding: 13px 4px;
        border-bottom: 1px solid var(--color-border);
        font-size: 0.96rem;
    }

    .navigation__link:last-child {
        border-bottom: 0;
    }

    .hero {
        padding: 75px 0 80px;
    }

    .hero__inner {
        grid-template-columns: 1fr;
        gap: 50px;
    }

    .hero__content {
        max-width: 100%;
    }

    .hero h1 {
        font-size: clamp(2.65rem, 11vw, 4rem);
    }

    .hero__description {
        font-size: 1rem;
    }

    .hero__visual {
        width: min(100%, 440px);
        justify-self: center;
        padding: 18px;
    }

    .visual-card__code {
        min-height: 215px;
        padding: 22px;
        font-size: 0.83rem;
    }

    .about__grid {
        grid-template-columns: 1fr;
        gap: 35px;
    }

    .section-heading {
        margin-bottom: 35px;
    }

    .projects__grid,
    .services__grid {
        grid-template-columns: 1fr;
    }

    .project-card__content>p:not(.project-card__type) {
        min-height: auto;
    }

    .project-card__preview {
        min-height: 185px;
    }

    .contacts__box {
        padding: 48px 22px;
    }

    .footer__inner {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
}


/* =========================
   12. МАЛЕНЬКИЕ ЭКРАНЫ
========================= */

@media (max-width: 420px) {
    .header__inner {
        gap: 10px;
    }

    .logo {
        font-size: 1.45rem;
    }

    .header__contact {
        padding: 9px 10px;
        font-size: 0.74rem;
    }

    .hero__actions {
        flex-direction: column;
    }

    .hero__actions .button {
        width: 100%;
    }

    .floating-badge {
        width: 51px;
        height: 51px;
        border-radius: 15px;
    }

    .skills-card {
        padding: 22px;
    }

    .skill__info {
        align-items: flex-start;
        flex-direction: column;
        gap: 3px;
    }

    .skill__info span:last-child {
        text-align: left;
    }

    .project-card__content,
    .service-card {
        padding: 23px;
    }
}


/* Учитываем системную настройку уменьшения анимации */

@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .js-ready .reveal {
        opacity: 1;
        transform: none;
    }
}

.navigation__link.is-current {
    color: var(--color-primary);
    font-weight: 700;
}