* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
 
body {
    font-family: Inter, -apple-system, Roboto, Helvetica, sans-serif;
    background-color: #121b2d;
    color: white;
    line-height: 1.6;
    padding-top: 90px;
}
 
/* Header Styles */
.main-header {
    width: 100%;
    height: 90px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.17);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 92px;
    background-color: #121b2d;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1000;
}
 
.logo {
    width: 158px;
    height: 52px;
    flex-shrink: 0;
}
 
.nav-menu {
    display: flex;
    align-items: center;
    gap: 40px;
}
 
.nav-link {
    color: rgba(255, 255, 255, 1);
    font: 400 16px Inter, -apple-system, Roboto, Helvetica, sans-serif;
    text-decoration: none;
}
 
.auth-buttons {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    width: 298px;
    height: 44px;
}
 
.register-btn {
    display: flex;
    width: 143px;
    padding: 10px 12px;
    justify-content: center;
    align-items: center;
    gap: 10px;
    border-radius: 30px;
    border: 2px solid #08c076;
    color: #08c076;
    font: 500 16px/150% Inter;
    text-decoration: none;
    background: transparent;
    cursor: pointer;
}
 
.login-btn {
    display: flex;
    width: 143px;
    padding: 10px 24px;
    justify-content: center;
    align-items: center;
    gap: 10px;
    border-radius: 30px;
    color: #121b2d;
    background-color: #08c076;
    font: 600 16px/150% Inter;
    text-decoration: none;
    border: none;
    cursor: pointer;
}
 
.mobile-menu-btn {
    display: none;
    color: #fff;
    font-size: 24px;
    background: none;
    border: none;
    cursor: pointer;
}
 
/* Hero Section */
.hero-section {
    width: 100%;
    min-height: 260px;
    position: relative;
    overflow: hidden;
    background-color: #1D2B48;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 32px 24px;
    transition: min-height 0.4s ease, padding 0.4s ease, box-shadow 0.3s ease, backdrop-filter 0.3s ease;
}
 
.hero-bg-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: absolute;
    left: 0;
    top: 0;
    z-index: 0;
}
 
.hero-title {
    color: #FFF;
    text-align: center;
    position: relative;
    z-index: 2;
    font: 400 48px Roboto, -apple-system, Roboto, Helvetica, sans-serif;
    transition: font-size 0.3s ease, text-align 0.3s ease, transform 0.3s ease;
}
 
.hero-section.hero-sticky {
    position: sticky;
    top: var(--hero-offset, 90px);
    min-height: 90px;
    padding: 16px 80px;
    backdrop-filter: blur(10px);
    z-index: 900;
}
 
.hero-section.hero-sticky .hero-title {
    text-align: left;
    width: 100%;
    transform: translateY(-4px);
    font-size: 36px;
}
 
/* Main Content */
.main-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 24px 20px;
}
 
.content-wrapper {
    display: flex;
    width: 100%;
    max-width: 1240px;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
}
 
.section-title {
    color: #08c076;
    font: 500 24px/130% Inter, -apple-system, Roboto, Helvetica, sans-serif;
}
 
.section-description {
    align-self: stretch;
    color: #fff;
    font: 400 16px/160% Inter, -apple-system, Roboto, Helvetica, sans-serif;
}
 
.subsection-title {
    align-self: stretch;
    color: #08c076;
    font: 600 18px/160% Inter, -apple-system, Roboto, Helvetica, sans-serif;
}
 
.content-text {
    align-self: stretch;
    color: #fff;
    font: 400 16px/160% Inter, -apple-system, Roboto, Helvetica, sans-serif;
}
 
/* Sidebar Layout */
.sidebar-layout {
    display: flex;
    padding: 24px 100px 0 100px;
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    align-self: stretch;
    min-height: 100vh;
    background-color: #151e32;
}
 
.sidebar-container {
    display: flex;
    align-items: flex-start;
    gap: 24px;
    align-self: stretch;
    margin-bottom: 24px;
}
 
.sidebar {
    display: flex;
    width: 315px;
    padding: 12px 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    align-self: stretch;
    border-right: 1px solid rgba(255, 255, 255, 0.2);
    position: sticky;
    top: var(--sidebar-sticky-top, 280px);
    align-self: flex-start;
}
 
.sidebar-header {
    color: #a4a4a4;
    font: 500 12px/130% Lato;
}
 
.sidebar-item {
    display: flex;
    align-items: center;
    gap: 10px;
    align-self: stretch;
    transition: color 0.2s ease;
}
 
.sidebar-item.active {
    color: #08c076;
    font: 600 18px/130% Roboto;
    cursor: pointer;
}
 
.sidebar-item:not(.active) {
    color: rgba(255, 255, 255, 0.53);
    font: 400 18px/130% Roboto;
    cursor: pointer;
}

.sidebar-item:not(.active):hover {
    color: rgba(255, 255, 255, 0.8);
}
 
.content-area {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    flex: 1 0 0;
}

.content-area img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
}
 
.content-title {
    color: #08c076;
    font: 400 24px/130% Inter;
}
 
.validation-step-title {
    align-self: stretch;
    color: #fff;
    font: 600 16px/160% Inter;
    margin-top: 8px;
}
 
.validation-step-content {
    align-self: stretch;
    color: #fff;
    font: 400 16px/160% Inter;
}

.benefit-list {
    color: #fff;
    font: 400 16px/160% Inter;
    padding-left: 24px;
    margin: 8px 0;
}

.benefit-list li {
    margin-bottom: 8px;
}
 
/* AI Content Section Transitions */
.ai-content-section {
    opacity: 1;
    transition: opacity 0.3s ease-in-out;
    display: flex;
    flex-direction: column;
    gap: 16px;
}
 
.ai-content-section[style*="display: none"] {
    opacity: 0;
}
 
/* Mobile Drawer and overlay styles */
.mobile-menu-toggle {
    display: none;
    background: transparent;
    border: none;
    padding: 8px;
    cursor: pointer;
    color: #FFFFFF;
}
 
.mobile-menu-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    justify-content: flex-end;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
    z-index: 1000;
}
 
.mobile-menu-overlay.open {
    opacity: 1;
    pointer-events: auto;
}
 
.mobile-menu {
    width: 320px;
    max-width: 86vw;
    height: 100%;
    background: #121214;
    color: #FFFFFF;
    box-shadow: -8px 0 24px rgba(0,0,0,0.4);
    transform: translateX(100%);
    transition: transform 0.25s ease;
    display: flex;
    flex-direction: column;
}
 
.mobile-menu-overlay.open .mobile-menu {
    transform: translateX(0);
}
 
.mobile-menu-header {
    display: flex;
    justify-content: flex-end;
    padding: 16px 16px 0 16px;
}
 
.mobile-menu-close {
    background: transparent;
    border: 1px solid rgba(255,255,255,0.18);
    border-radius: 10px;
    padding: 6px;
    color: #FFFFFF;
    cursor: pointer;
}
 
.mobile-nav {
    display: flex;
    flex-direction: column;
    padding: 8px 16px;
}
 
.mobile-nav-link {
    color: #FFFFFF;
    text-decoration: none;
    padding: 12px 10px;
    border-radius: 10px;
    margin: 4px 0;
    transition: background 0.15s ease;
}
 
.mobile-nav-link:hover {
    background: rgba(255, 255, 255, 0.08);
}
 
.mobile-auth {
    margin-top: auto;
    padding: 16px;
    display: flex;
    gap: 12px;
}
 
.mobile-auth .register-btn, 
.mobile-auth .login-btn {
    font-family: inherit;
    font-size: 14px;
    padding: 10px 14px;
    border-radius: 30px;
    cursor: pointer;
    flex: 1;
}
 
.mobile-auth .register-btn {
    background: transparent;
    color: #08c076;
    border: 2px solid #08c076;
}
 
.mobile-auth .login-btn {
    background: #08c076;
    color: #121b2d;
    border: none;
}
 
body.no-scroll { 
    overflow: hidden; 
}

@media (max-width: 991px) {
    body {
        padding-top: 70px;
    }

    .main-header {
        height: 70px;
        padding: 0 40px;
    }

    .logo {
        width: 130px;
        height: 42px;
    }
 
    .nav-menu {
        display: none;
    }
 
    .auth-buttons {
        width: auto;
        gap: 8px;
    }
 
    .register-btn, .login-btn {
        width: 110px;
        padding: 8px 10px;
        font-size: 14px;
    }
 
    .login-btn {
        padding: 8px 16px;
    }

    .hero-section {
        min-height: 200px;
        padding: 24px 20px;
    }
 
    .hero-title {
        font-size: 36px;
    }

    .hero-section.hero-sticky {
        min-height: 70px;
        padding: 12px 40px;
    }

    .hero-section.hero-sticky .hero-title {
        font-size: 28px;
    }
 
    .main-content {
        padding: 20px 24px;
    }
 
    .content-wrapper {
        padding: 0 16px;
    }
 
    .section-title {
        font-size: 22px;
    }
 
    .section-description, .content-text {
        font-size: 15px;
    }
 
    .subsection-title {
        font-size: 17px;
    }

    .sidebar-layout {
        padding: 24px 40px 0 40px;
    }
 
    .sidebar-container {
        gap: 20px;
    }
 
    .sidebar {
        width: 240px;
    }
 
    .sidebar-item.active, .sidebar-item:not(.active) {
        font-size: 16px;
    }
 
    .content-title {
        font-size: 22px;
    }
 
    .validation-step-content, 
    .validation-step-title {
        font-size: 15px;
    }
}


@media (max-width: 767px) {
    body {
        padding-top: 60px;
    }

    .main-header {
        height: 60px;
        padding: 0 20px;
    }

    .logo {
        width: 110px;
        height: 36px;
    }
 
    .auth-buttons {
        display: none;
    }
 
    .mobile-menu-toggle {
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    .hero-section {
        min-height: 160px;
        padding: 20px 16px;
    }
 
    .hero-title {
        font-size: 28px;
        line-height: 1.3;
    }

    .hero-section.hero-sticky {
        min-height: 60px;
        padding: 10px 20px;
        top: 60px;
    }

    .hero-section.hero-sticky .hero-title {
        font-size: 20px;
        text-align: center;
    }

    .main-content {
        padding: 16px 12px;
    }

    .content-wrapper {
        padding: 0 8px;
        gap: 16px;
    }
 
    .section-title {
        font-size: 20px;
        line-height: 1.3;
    }
 
    .section-description, 
    .content-text {
        font-size: 14px;
        line-height: 1.6;
    }
 
    .subsection-title {
        font-size: 16px;
        line-height: 1.5;
    }

    .sidebar-layout {
        padding: 20px 16px 0 16px;
    }
 
    .sidebar-container {
        flex-direction: column;
        gap: 16px;
    }
 
    .sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.2);
        padding: 12px 0 16px 0;
        position: static;
        top: auto;
    }

    .sidebar-header {
        font-size: 11px;
        margin-bottom: 4px;
    }

    .sidebar-item {
        padding: 8px 0;
    }

    .sidebar-item.active {
        font-size: 16px;
    }

    .sidebar-item:not(.active) {
        font-size: 15px;
    }

    .content-area {
        gap: 16px;
    }

    .content-area img {
        border-radius: 8px;
    }
 
    .content-title {
        font-size: 20px;
    }
 
    .validation-step-title {
        font-size: 15px;
        margin-top: 12px;
    }
 
    .validation-step-content {
        font-size: 14px;
    }

    .benefit-list {
        font-size: 14px;
        padding-left: 20px;
    }

    .benefit-list li {
        margin-bottom: 6px;
    }
}


@media (max-width: 480px) {
    .main-header {
        padding: 0 16px;
    }

    .logo {
        width: 100px;
        height: 32px;
    }

    .hero-section {
        min-height: 140px;
        padding: 16px 12px;
    }

    .hero-title {
        font-size: 24px;
    }

    .hero-section.hero-sticky .hero-title {
        font-size: 18px;
    }

    .main-content {
        padding: 12px 8px;
    }

    .section-title {
        font-size: 18px;
    }

    .section-description,
    .content-text,
    .validation-step-content {
        font-size: 13px;
    }

    .subsection-title {
        font-size: 15px;
    }

    .sidebar-layout {
        padding: 16px 12px 0 12px;
    }

    .content-title {
        font-size: 18px;
    }

    .validation-step-title {
        font-size: 14px;
    }

    .benefit-list {
        font-size: 13px;
        padding-left: 18px;
    }

    .mobile-menu {
        width: 280px;
    }
}


@media (max-height: 500px) and (orientation: landscape) {
    body {
        padding-top: 50px;
    }

    .main-header {
        height: 50px;
    }

    .hero-section {
        min-height: 100px;
    }

    .hero-section.hero-sticky {
        min-height: 50px;
    }
}