:root {
    --primary-color: #174ea6;
    --secondary-color: #0f2f63;
    --accent-color: #2f80ed;
    --background-color: #f5f7fb;
    --card-color: #ffffff;
    --text-color: #172033;
    --muted-text-color: #667085;
    --border-color: #e2e7ef;
    --shadow: 0 10px 30px rgba(23, 32, 51, 0.08);
    --shadow-hover: 0 16px 40px rgba(23, 32, 51, 0.13);
    --border-radius: 14px;
    --content-width: 1180px;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-width: 320px;
    overflow-x: hidden;
    background: var(--background-color);
    color: var(--text-color);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.6;
}

button,
input,
select,
textarea {
    font: inherit;
}

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

.container {
    width: min(calc(100% - 40px), var(--content-width));
    margin: 0 auto;
}

h1,
h2,
h3,
p {
    margin-top: 0;
}

h1,
h2,
h3 {
    line-height: 1.2;
}

h1 {
    margin-bottom: 22px;
    font-size: clamp(2.4rem, 5vw, 4.5rem);
    letter-spacing: -0.04em;
}

h2 {
    margin-bottom: 16px;
    font-size: clamp(2rem, 3.5vw, 3rem);
    letter-spacing: -0.025em;
}

h3 {
    margin-bottom: 10px;
    font-size: 1.15rem;
}

p {
    color: var(--muted-text-color);
}

.eyebrow {
    margin-bottom: 12px;
    color: var(--primary-color);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.section-heading {
    max-width: 760px;
    margin: 0 auto 55px;
    text-align: center;
}

.section-heading p:last-child {
    max-width: 680px;
    margin-right: auto;
    margin-left: auto;
}

.primary-button,
.secondary-button,
.profile-button {
    display: inline-flex;
    min-height: 48px;
    align-items: center;
    justify-content: center;
    padding: 12px 22px;
    border: 1px solid transparent;
    border-radius: 10px;
    font-size: 0.95rem;
    font-weight: 700;
    line-height: 1.2;
    cursor: pointer;
    transition:
        background-color 0.2s ease,
        border-color 0.2s ease,
        color 0.2s ease,
        box-shadow 0.2s ease,
        transform 0.2s ease;
}

.primary-button {
    background: var(--primary-color);
    color: #fff;
    box-shadow: 0 8px 20px rgba(23, 78, 166, 0.2);
}

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

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

.secondary-button:hover {
    border-color: var(--primary-color);
    background: #f0f5ff;
    transform: translateY(-2px);
}

.primary-button:focus-visible,
.secondary-button:focus-visible,
.profile-button:focus-visible,
.nav-login:focus-visible,
.nav-register:focus-visible,
.main-navigation a:focus-visible,
.logo:focus-visible,
.footer-logo:focus-visible,
.footer-column a:focus-visible,
.hamburger-button:focus-visible,
.customer-tools input:focus-visible,
.customer-tools select:focus-visible {
    outline: 3px solid rgba(47, 128, 237, 0.4);
    outline-offset: 3px;
}

.site-header {
    position: sticky;
    z-index: 1000;
    top: 0;
    border-bottom: 1px solid rgba(226, 231, 239, 0.9);
    background: rgba(255, 255, 255, 0.97);
    box-shadow: 0 3px 18px rgba(23, 32, 51, 0.04);
    backdrop-filter: blur(12px);
}

.header-container {
    position: relative;
    min-height: 76px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 30px;
}

.logo,
.footer-logo {
    display: inline-flex;
    align-items: center;
    color: var(--secondary-color);
    font-size: 1.25rem;
    font-weight: 800;
}

.hamburger-button {
    display: none;
    width: 46px;
    height: 46px;
    flex: 0 0 46px;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    padding: 0;
    border: 1px solid var(--border-color);
    border-radius: 9px;
    background: #fff;
    cursor: pointer;
}

.hamburger-button span {
    display: block;
    width: 21px;
    height: 2px;
    border-radius: 2px;
    background: var(--secondary-color);
}

.main-navigation {
    display: flex;
    align-items: center;
    gap: 7px;
}

.main-navigation a {
    display: inline-flex;
    min-height: 44px;
    align-items: center;
    justify-content: center;
    padding: 10px 14px;
    border-radius: 8px;
    color: #475467;
    font-size: 0.92rem;
    font-weight: 600;
}

.main-navigation a:hover {
    background: #f1f5fa;
    color: var(--primary-color);
}

.main-navigation .nav-login {
    margin-left: 8px;
    border: 1px solid var(--border-color);
    background: #fff;
    color: var(--primary-color);
}

.main-navigation .nav-login:hover {
    border-color: var(--primary-color);
    background: #f0f5ff;
}

.main-navigation .nav-register {
    margin-left: 2px;
    padding-right: 18px;
    padding-left: 18px;
    background: var(--primary-color);
    color: #fff;
}

.main-navigation .nav-register:hover {
    background: var(--secondary-color);
    color: #fff;
}

.hero-section {
    padding: 100px 0 110px;
    background:
        radial-gradient(circle at 85% 15%, rgba(47, 128, 237, 0.1), transparent 28%),
        linear-gradient(180deg, #fff 0%, #f5f8fd 100%);
}

.hero-content {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(420px, 0.95fr);
    align-items: center;
    gap: 70px;
}

.hero-text {
    max-width: 650px;
}

.hero-text h1 {
    color: var(--secondary-color);
}

.hero-description {
    max-width: 610px;
    margin-bottom: 30px;
    font-size: 1.08rem;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.preview-window {
    padding: 26px;
    border: 1px solid var(--border-color);
    border-radius: 20px;
    background: #fff;
    box-shadow: 0 24px 60px rgba(23, 32, 51, 0.12);
}

.preview-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.preview-header h2 {
    margin: 3px 0 0;
    font-size: 1.25rem;
}

.preview-label {
    color: var(--primary-color);
    font-size: 0.68rem;
    font-weight: 800;
    letter-spacing: 0.1em;
}

.preview-status {
    padding: 6px 10px;
    border-radius: 20px;
    background: #edf8f1;
    color: #237a45;
    font-size: 0.7rem;
    font-weight: 700;
}

.preview-summary {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    padding: 20px 0;
}

.preview-card {
    padding: 15px;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    background: #f9fafc;
}

.preview-card span,
.preview-card strong {
    display: block;
}

.preview-card span {
    margin-bottom: 4px;
    color: var(--muted-text-color);
    font-size: 0.7rem;
}

.preview-card strong {
    color: var(--secondary-color);
    font-size: 1.3rem;
}

.preview-search {
    margin-bottom: 12px;
    padding: 12px 14px;
    border: 1px solid var(--border-color);
    border-radius: 9px;
    color: #98a2b3;
    font-size: 0.78rem;
}

.preview-customer {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 0;
    border-top: 1px solid var(--border-color);
}

.customer-avatar,
.sample-avatar {
    display: flex;
    width: 42px;
    height: 42px;
    flex: 0 0 42px;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: #e9f0ff;
    color: var(--primary-color);
    font-size: 0.8rem;
    font-weight: 800;
}

.customer-preview-info {
    min-width: 0;
    flex: 1;
}

.customer-preview-info strong,
.customer-preview-info span {
    display: block;
}

.customer-preview-info strong {
    font-size: 0.88rem;
}

.customer-preview-info span {
    color: var(--muted-text-color);
    font-size: 0.72rem;
}

.customer-status {
    color: #287a46;
    font-size: 0.7rem;
    font-weight: 700;
}

.problem-section {
    padding: 105px 0;
    background: #eef3f9;
}

.problem-content {
    display: grid;
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
    gap: 70px;
}

.problem-text h3 {
    color: var(--secondary-color);
    font-size: 1.55rem;
}

.problem-text p {
    max-width: 520px;
}

.problem-list {
    display: grid;
    gap: 14px;
}

.problem-item {
    display: flex;
    align-items: flex-start;
    gap: 17px;
    padding: 19px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: #fff;
    box-shadow: 0 5px 18px rgba(23, 32, 51, 0.045);
}

.problem-marker {
    display: flex;
    width: 40px;
    height: 40px;
    flex: 0 0 40px;
    align-items: center;
    justify-content: center;
    border-radius: 9px;
    background: #edf3ff;
    color: var(--primary-color);
    font-size: 0.7rem;
    font-weight: 800;
}

.problem-item h3 {
    margin-bottom: 3px;
    font-size: 1rem;
}

.problem-item p {
    margin-bottom: 0;
    font-size: 0.88rem;
}

.features-section,
.dashboard-preview-section {
    padding: 110px 0;
    background: #fff;
}

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

.feature-card {
    padding: 30px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: #fff;
    box-shadow: var(--shadow);
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.feature-card:hover {
    border-color: #d0dcf2;
    box-shadow: var(--shadow-hover);
    transform: translateY(-5px);
}

.feature-label {
    display: flex;
    width: 42px;
    height: 42px;
    align-items: center;
    justify-content: center;
    margin-bottom: 22px;
    border-radius: 9px;
    background: #edf3ff;
    color: var(--primary-color);
    font-size: 0.75rem;
    font-weight: 800;
}

.feature-card h3,
.step-card h3 {
    color: var(--secondary-color);
}

.feature-card p,
.step-card p {
    margin-bottom: 0;
    font-size: 0.9rem;
}

.how-it-works-section {
    padding: 110px 0;
    background: var(--background-color);
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.step-card {
    padding: 30px 24px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: #fff;
    box-shadow: var(--shadow);
}

.step-number {
    display: flex;
    width: 48px;
    height: 48px;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    border-radius: 50%;
    background: var(--primary-color);
    color: #fff;
    font-size: 0.8rem;
    font-weight: 800;
}

.dashboard-preview {
    padding: 30px;
    border: 1px solid var(--border-color);
    border-radius: 20px;
    background: #f8fafc;
    box-shadow: 0 20px 55px rgba(23, 32, 51, 0.09);
}

.dashboard-summary {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 22px;
}

.summary-card {
    padding: 22px;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    background: #fff;
}

.summary-card span,
.summary-card small {
    display: block;
}

.summary-card span {
    margin-bottom: 7px;
    color: var(--muted-text-color);
    font-size: 0.75rem;
    font-weight: 600;
}

.summary-card strong {
    display: block;
    margin-bottom: 5px;
    color: var(--secondary-color);
    font-size: 1.8rem;
    line-height: 1;
}

.summary-card small {
    color: #98a2b3;
    font-size: 0.7rem;
}

.customer-tools {
    display: grid;
    grid-template-columns: minmax(0, 1.5fr) minmax(160px, 0.7fr) minmax(160px, 0.7fr);
    gap: 14px;
    margin-bottom: 22px;
    padding: 18px;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    background: #fff;
}

.customer-tools label {
    display: block;
    margin-bottom: 6px;
    color: var(--text-color);
    font-size: 0.75rem;
    font-weight: 700;
}

.customer-tools input,
.customer-tools select {
    width: 100%;
    min-height: 44px;
    padding: 9px 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    outline: none;
    background: #fff;
    color: var(--text-color);
    font-size: 0.82rem;
}

.customer-tools input:focus,
.customer-tools select:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(47, 128, 237, 0.1);
}

.sample-customer-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}

.sample-customer-card {
    display: flex;
    min-width: 0;
    flex-direction: column;
    padding: 23px;
    border: 1px solid var(--border-color);
    border-radius: 13px;
    background: #fff;
    box-shadow: 0 7px 20px rgba(23, 32, 51, 0.05);
}

.sample-customer-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding-bottom: 18px;
    border-bottom: 1px solid var(--border-color);
}

.sample-customer-header h3 {
    margin-bottom: 2px;
    color: var(--secondary-color);
    font-size: 1rem;
}

.sample-customer-header span {
    color: var(--muted-text-color);
    font-size: 0.7rem;
}

.customer-details {
    flex: 1;
    padding: 17px 0;
}

.customer-details p {
    margin-bottom: 8px;
    font-size: 0.78rem;
    word-break: break-word;
}

.customer-details p:last-child {
    margin-bottom: 0;
}

.customer-details strong {
    color: var(--text-color);
}

.profile-button {
    width: 100%;
    border-color: var(--border-color);
    background: #f7f9fc;
    color: var(--primary-color);
}

.profile-button:hover {
    border-color: var(--primary-color);
    background: #edf3ff;
}

.cta-section {
    padding: 95px 0;
    background: var(--secondary-color);
}

.cta-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 50px;
}

.cta-text {
    max-width: 720px;
}

.cta-section .eyebrow {
    color: #9fc0ff;
}

.cta-section h2 {
    color: #fff;
}

.cta-section p:not(.eyebrow) {
    margin-bottom: 0;
    color: #c8d4e8;
}

.cta-action {
    flex: 0 0 auto;
}

.cta-action .primary-button {
    min-width: 190px;
    background: #fff;
    color: var(--secondary-color);
    box-shadow: none;
}

.cta-action .primary-button:hover {
    background: #f0f5ff;
}

.site-footer {
    background: #0a1d3a;
    color: #fff;
}

.footer-container {
    display: grid;
    grid-template-columns: minmax(0, 1.4fr) minmax(300px, 0.8fr);
    gap: 70px;
    padding-top: 65px;
    padding-bottom: 50px;
}

.footer-brand {
    max-width: 500px;
}

.footer-logo {
    margin-bottom: 15px;
    color: #fff;
}

.footer-brand p {
    max-width: 470px;
    margin-bottom: 0;
    color: #aebcd0;
    font-size: 0.88rem;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.footer-column h2 {
    margin-bottom: 15px;
    color: #fff;
    font-size: 0.95rem;
}

.footer-column a {
    display: block;
    width: fit-content;
    margin-bottom: 9px;
    color: #aebcd0;
    font-size: 0.85rem;
}

.footer-column a:hover {
    color: #fff;
}

.footer-bottom {
    padding-top: 22px;
    padding-bottom: 25px;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.footer-bottom p {
    margin-bottom: 0;
    color: #8495ae;
    font-size: 0.78rem;
}

@media (max-width: 1024px) {
    .container {
        width: min(calc(100% - 32px), var(--content-width));
    }

    .hero-content {
        grid-template-columns: minmax(0, 1fr) minmax(360px, 0.9fr);
        gap: 40px;
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .steps-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .dashboard-summary {
        grid-template-columns: repeat(2, 1fr);
    }

    .sample-customer-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .sample-customer-card:last-child {
        grid-column: 1 / -1;
    }
}

@media (max-width: 800px) {
    .header-container {
        min-height: 68px;
    }

    .hamburger-button {
        display: flex;
    }

    .main-navigation {
        position: absolute;
        top: calc(100% + 1px);
        right: 0;
        width: min(320px, calc(100vw - 28px));
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 4px;
        padding: 12px;
        border: 1px solid var(--border-color);
        border-radius: 12px;
        background: #fff;
        box-shadow: 0 15px 35px rgba(23, 32, 51, 0.12);
    }

    .main-navigation.active {
        display: flex;
    }

    .main-navigation a {
        width: 100%;
        justify-content: flex-start;
    }

    .main-navigation .nav-login {
        margin-left: 0;
    }

    .main-navigation .nav-register {
        justify-content: center;
    }

    .hero-section {
        padding: 75px 0 85px;
    }

    .hero-content {
        grid-template-columns: 1fr;
    }

    .hero-text {
        max-width: none;
        text-align: center;
    }

    .hero-description {
        margin-right: auto;
        margin-left: auto;
    }

    .hero-actions {
        justify-content: center;
    }

    .problem-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .problem-text {
        text-align: center;
    }

    .problem-text p {
        margin-right: auto;
        margin-left: auto;
    }

    .customer-tools {
        grid-template-columns: 1fr 1fr;
    }

    .customer-search {
        grid-column: 1 / -1;
    }

    .cta-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 600px) {
    .container {
        width: min(calc(100% - 28px), var(--content-width));
    }

    h1 {
        font-size: 2.35rem;
    }

    h2 {
        font-size: 1.9rem;
    }

    .hero-section,
    .problem-section,
    .features-section,
    .how-it-works-section,
    .dashboard-preview-section {
        padding: 75px 0;
    }

    .hero-actions {
        flex-direction: column;
        width: 100%;
    }

    .hero-actions a {
        width: 100%;
    }

    .preview-window {
        padding: 18px;
        border-radius: 15px;
    }

    .preview-header {
        flex-direction: column;
        gap: 10px;
    }

    .preview-summary {
        grid-template-columns: 1fr;
    }

    .features-grid,
    .steps-grid,
    .sample-customer-grid {
        grid-template-columns: 1fr;
    }

    .sample-customer-card:last-child {
        grid-column: auto;
    }

    .dashboard-preview {
        padding: 15px;
        border-radius: 15px;
    }

    .dashboard-summary {
        grid-template-columns: 1fr 1fr;
        gap: 10px;
    }

    .summary-card {
        padding: 16px;
    }

    .summary-card strong {
        font-size: 1.45rem;
    }

    .customer-tools {
        grid-template-columns: 1fr;
        padding: 14px;
    }

    .customer-search {
        grid-column: auto;
    }

    .cta-section {
        padding: 75px 0;
    }

    .cta-action,
    .cta-action .primary-button {
        width: 100%;
    }

    .footer-container {
        grid-template-columns: 1fr;
        gap: 40px;
        padding-top: 50px;
    }

    .footer-links {
        gap: 25px;
    }
}

@media (max-width: 400px) {
    .dashboard-summary {
        grid-template-columns: 1fr;
    }

    .footer-links {
        grid-template-columns: 1fr;
    }

    .preview-customer {
        align-items: flex-start;
    }

    .customer-status {
        display: none;
    }

    .main-navigation {
        right: -2px;
        width: calc(100vw - 28px);
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

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