/* =====================================================
   ROOT
===================================================== */

:root {
    --primary: #1f3f72;
    --primary-dark: #132b50;

    --orange: #ff7a00;
    --green: #138808;

    --text-primary: #1f2937;
    --text-secondary: #64748b;

    --background: #ffffff;
    --background-soft: #f6f8fb;

    --border: #e2e8f0;

    --footer: #152033;

    --shadow:
        0 10px 30px rgba(15, 23, 42, 0.08);

    --radius: 12px;

    --container-width: 1100px;
}


/* =====================================================
   RESET
===================================================== */

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


html {
    scroll-behavior: smooth;
}


body {
    font-family:
        Inter,
        system-ui,
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        sans-serif;

    color: var(--text-primary);
    background: var(--background);

    line-height: 1.6;
}


/* =====================================================
   CONTAINER
===================================================== */

.container {
    width: min(90%, var(--container-width));
    margin: 0 auto;
}


/* =====================================================
   NAVBAR
===================================================== */

.navbar {
    position: sticky;
    top: 0;

    z-index: 100;

    background: rgba(255, 255, 255, 0.96);

    border-bottom: 1px solid var(--border);

    backdrop-filter: blur(10px);
}


.nav-container {
    height: 78px;

    display: flex;
    align-items: center;
    justify-content: space-between;
}


/* Brand */

.brand {
    display: flex;
    align-items: center;

    gap: 10px;

    text-decoration: none;

    color: var(--text-primary);
}


.brand-icon {
    width: 38px;
    height: 38px;

    object-fit: contain;
}


.brand-name {
    font-size: 20px;
    font-weight: 700;

    color: var(--primary-dark);
}


/* Navigation */

.nav-links {
    display: flex;
    gap: 30px;
}


.nav-links a {
    text-decoration: none;

    font-size: 14px;
    font-weight: 500;

    color: var(--text-secondary);

    transition: color 0.2s ease;
}


.nav-links a:hover {
    color: var(--primary);
}


/* Actions */

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


/* =====================================================
   BUTTONS
===================================================== */

.btn {
    display: inline-flex;

    align-items: center;
    justify-content: center;

    padding: 12px 22px;

    border-radius: 10px;

    text-decoration: none;

    font-size: 14px;
    font-weight: 600;

    transition:
        transform 0.2s ease,
        box-shadow 0.2s ease,
        background 0.2s ease;
}


.btn:hover {
    transform: translateY(-2px);
}


/* Primary */

.btn-primary {
    color: #ffffff;

    background: var(--primary);

    box-shadow:
        0 6px 16px rgba(31, 63, 114, 0.25);
}


.btn-primary:hover {
    background: var(--primary-dark);
}


/* Secondary */

.btn-secondary {
    color: var(--primary);

    background: #ffffff;

    border: 1px solid var(--border);
}


.btn-secondary:hover {
    border-color: var(--primary);
}


/* Large */

.btn-large {
    padding:
        14px
        24px;
}


/* =====================================================
   HERO
===================================================== */

.hero {
    padding:
        100px
        0
        80px;

    background:
        linear-gradient(
            135deg,
            #ffffff 0%,
            #f3f6fb 100%
        );
}


.hero-container {
    display: grid;

    grid-template-columns:
        1.1fr
        0.9fr;

    align-items: center;

    gap: 80px;
}


/* Badge */

.hero-badge {
    display: inline-block;

    padding:
        8px
        14px;

    margin-bottom: 24px;

    border-radius: 999px;

    background: #edf3fb;

    color: var(--primary);

    font-size: 12px;
    font-weight: 700;

    letter-spacing: 0.5px;
}


/* Hero Heading */

.hero h1 {
    font-size: clamp(
        44px,
        6vw,
        72px
    );

    line-height: 1.05;

    letter-spacing: -2px;

    margin-bottom: 24px;

    color: var(--text-primary);
}


.hero h1 span {
    display: block;

    color: var(--primary);
}


/* Hero Description */

.hero-description {
    max-width: 620px;

    font-size: 17px;

    color: var(--text-secondary);

    margin-bottom: 30px;
}


/* Hero Buttons */

.hero-actions {
    display: flex;

    gap: 14px;

    flex-wrap: wrap;
}


/* =====================================================
   HERO LOGO
===================================================== */

.hero-visual {
    display: flex;

    justify-content: center;
    align-items: center;
}


/*
   White card ensures the brand logo
   remains clearly visible.
*/

.hero-logo-card {
    width: 100%;
    max-width: 420px;

    min-height: 340px;

    display: flex;

    align-items: center;
    justify-content: center;

    background: #ffffff;

    border-radius: 24px;

    padding: 40px;

    border-top: 4px solid var(--orange);
    border-bottom: 4px solid var(--green);

    box-shadow:
        0 25px 60px rgba(31, 63, 114, 0.18);
}


.hero-logo {
    width: 100%;
    max-width: 320px;

    height: auto;

    object-fit: contain;

    display: block;
}


/* =====================================================
   STANDARDS
===================================================== */

.standards {
    padding:
        35px
        0;

    border-top:
        1px solid var(--border);

    border-bottom:
        1px solid var(--border);

    background: #ffffff;
}


.standards-container {
    text-align: center;
}


.standards-title {
    margin-bottom: 14px;

    font-size: 10px;

    font-weight: 800;

    letter-spacing: 2px;

    color: var(--text-secondary);
}


.standards-list {
    display: flex;

    justify-content: center;

    align-items: center;

    flex-wrap: wrap;

    gap: 16px;

    font-size: 14px;

    font-weight: 700;

    color: var(--primary);
}


.standards-list i {
    color: var(--orange);

    font-style: normal;
}


/* =====================================================
   GENERIC SECTIONS
===================================================== */

.section {
    padding:
        100px
        0;
}


.section-alt {
    background: var(--background-soft);
}


.section-header {
    max-width: 700px;

    margin:
        0
        auto
        60px;

    text-align: center;
}


.section-label {
    display: block;

    margin-bottom: 15px;

    font-size: 11px;

    font-weight: 800;

    letter-spacing: 2px;

    color: var(--orange);
}


.section-header h2,
.security-section h2,
.developers-content h2 {
    font-size: 42px;

    line-height: 1.2;

    margin-bottom: 18px;

    color: var(--text-primary);
}


.section-header p,
.security-section p,
.developers-content p {
    font-size: 16px;

    color: var(--text-secondary);
}


/* =====================================================
   FEATURES
===================================================== */

.feature-grid {
    display: grid;

    grid-template-columns:
        repeat(3, 1fr);

    gap: 28px;
}


.feature-card {
    padding: 35px;

    border-radius: var(--radius);

    background: #ffffff;

    border:
        1px solid var(--border);

    transition:
        transform 0.25s ease,
        box-shadow 0.25s ease;
}


.feature-card:hover {
    transform: translateY(-6px);

    box-shadow: var(--shadow);
}


.feature-number {
    margin-bottom: 20px;

    font-size: 13px;

    font-weight: 800;

    color: var(--orange);
}


.feature-card h3 {
    margin-bottom: 12px;

    font-size: 21px;

    color: var(--primary-dark);
}


.feature-card p {
    font-size: 15px;

    color: var(--text-secondary);
}


/* =====================================================
   ARCHITECTURE
===================================================== */

.architecture-grid {
    display: grid;

    grid-template-columns:
        repeat(3, 1fr);

    gap: 25px;
}


.architecture-card {
    padding: 32px;

    background: #ffffff;

    border-radius: var(--radius);

    border:
        1px solid var(--border);
}


.architecture-card h3 {
    margin-bottom: 12px;

    color: var(--primary-dark);

    font-size: 20px;
}


.architecture-card p {
    color: var(--text-secondary);

    font-size: 15px;
}


/* =====================================================
   SECURITY
===================================================== */

.security-section {
    background:
        linear-gradient(
            135deg,
            #1f3f72,
            #132b50
        );

    color: #ffffff;
}


.security-container {
    display: grid;

    grid-template-columns:
        1fr
        1fr;

    gap: 80px;

    align-items: center;
}


.security-section h2 {
    color: #ffffff;
}


.security-section p {
    color:
        rgba(255, 255, 255, 0.72);
}


.security-list {
    display: flex;

    flex-direction: column;

    gap: 16px;
}


.security-item {
    display: flex;

    align-items: center;

    gap: 14px;

    padding: 16px 20px;

    border-radius: 10px;

    background:
        rgba(255, 255, 255, 0.08);

    border:
        1px solid
        rgba(255, 255, 255, 0.12);
}


.security-item span {
    color: #6ee07b;

    font-weight: bold;
}


/* =====================================================
   DEVELOPERS
===================================================== */

.developers-section {
    text-align: center;

    background: #ffffff;
}


.developers-content {
    max-width: 700px;

    margin: auto;
}


.developer-actions {
    display: flex;

    justify-content: center;

    gap: 14px;

    margin-top: 30px;
}


/* =====================================================
   FOOTER
===================================================== */

.footer {
    background: var(--footer);

    color: #ffffff;

    padding-top: 55px;
}


.footer-container {
    display: flex;

    align-items: center;

    justify-content: space-between;

    gap: 40px;

    padding-bottom: 45px;
}


/* -----------------------------------------------------
   FOOTER BRAND
----------------------------------------------------- */

.footer-brand {
    display: flex;

    align-items: center;

    gap: 15px;
}


/*
   Important:
   White logo background improves visibility
   of the detailed TSCloak icon on dark footer.
*/

.footer-logo-box {
    width: 58px;
    height: 58px;

    display: flex;

    align-items: center;
    justify-content: center;

    background: #ffffff;

    border-radius: 14px;

    padding: 6px;

    box-shadow:
        0 6px 18px
        rgba(0, 0, 0, 0.25);
}


.footer-logo {
    width: 46px;
    height: 46px;

    object-fit: contain;

    display: block;
}


.footer-brand-text h3 {
    margin-bottom: 3px;

    font-size: 21px;

    font-weight: 700;

    color: #ffffff;
}


.footer-brand-text p {
    font-size: 13px;

    color:
        rgba(255, 255, 255, 0.6);
}


/* -----------------------------------------------------
   FOOTER LINKS
----------------------------------------------------- */

.footer-links {
    display: flex;

    gap: 28px;

    flex-wrap: wrap;
}


.footer-links a {
    color:
        rgba(255, 255, 255, 0.65);

    text-decoration: none;

    font-size: 14px;

    transition:
        color 0.2s ease;
}


.footer-links a:hover {
    color: #ffffff;
}


/* -----------------------------------------------------
   FOOTER BOTTOM
----------------------------------------------------- */

.footer-bottom {
    text-align: center;

    padding:
        22px
        0;

    border-top:
        1px solid
        rgba(255, 255, 255, 0.08);
}


.footer-bottom p {
    font-size: 13px;

    color:
        rgba(255, 255, 255, 0.5);
}


/* =====================================================
   RESPONSIVE
===================================================== */

@media (max-width: 900px) {

    .nav-links {
        display: none;
    }


    .hero-container {
        grid-template-columns: 1fr;

        gap: 50px;
    }


    .hero-content {
        text-align: center;
    }


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


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


    .feature-grid,
    .architecture-grid {
        grid-template-columns: 1fr;
    }


    .security-container {
        grid-template-columns: 1fr;

        gap: 50px;
    }


    .footer-container {
        flex-direction: column;

        align-items: flex-start;
    }

}


/* =====================================================
   MOBILE
===================================================== */

@media (max-width: 600px) {

    .nav-container {
        height: 68px;
    }


    .nav-actions .btn-secondary {
        display: none;
    }


    .brand-name {
        font-size: 18px;
    }


    .brand-icon {
        width: 34px;
        height: 34px;
    }


    .hero {
        padding:
            70px
            0
            60px;
    }


    .hero h1 {
        font-size: 45px;
    }


    .hero-logo-card {
        min-height: 280px;

        padding: 30px;

        max-width: 100%;
    }


    .hero-logo {
        max-width: 260px;
    }


    .section {
        padding:
            70px
            0;
    }


    .section-header h2,
    .security-section h2,
    .developers-content h2 {
        font-size: 34px;
    }


    .footer-links {
        gap: 18px;
    }


    .developer-actions {
        flex-direction: column;

        align-items: center;
    }

}