/* =========================================================
   FIT50PLUS
   Global Design System
   ========================================================= */


/* ---------------------------------------------------------
   1. DESIGN VARIABLES
   --------------------------------------------------------- */

:root {

    /* Brand */
    --color-primary: #173F35;
    --color-primary-dark: #0F3028;
    --color-primary-light: #EAF3EF;

    /* Supporting colors */
    --color-accent: #C58A3A;
    --color-accent-light: #F6EBDD;

    /* Neutral colors */
    --color-white: #FFFFFF;
    --color-background: #F8F7F3;
    --color-surface: #FFFFFF;
    --color-surface-soft: #F1F3EF;

    --color-text: #1D2925;
    --color-text-soft: #5D6863;
    --color-text-muted: #7A837F;

    --color-border: #DDE3DE;

    /* Typography */
    --font-primary:
        Inter,
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        sans-serif;

    --font-display:
        Georgia,
        "Times New Roman",
        serif;

    /* Layout */
    --container-width: 1200px;

    /* Radius */
    --radius-small: 8px;
    --radius-medium: 14px;
    --radius-large: 22px;

    /* Shadows */
    --shadow-soft:
        0 8px 30px rgba(23, 63, 53, 0.07);

    --shadow-medium:
        0 15px 45px rgba(23, 63, 53, 0.11);

    /* Transitions */
    --transition:
        180ms ease;
}


/* ---------------------------------------------------------
   2. RESET
   --------------------------------------------------------- */

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

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    padding: 0;

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

    font-family: var(--font-primary);
    font-size: 17px;
    line-height: 1.7;

    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

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

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

button {
    cursor: pointer;
}

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


/* ---------------------------------------------------------
   3. TYPOGRAPHY
   --------------------------------------------------------- */

h1,
h2,
h3,
h4,
h5,
h6 {
    margin-top: 0;

    color: var(--color-primary);

    line-height: 1.2;
    letter-spacing: -0.02em;
}

h1,
h2 {
    font-family: var(--font-display);
}

h1 {
    font-size: clamp(2.4rem, 5vw, 4.5rem);
}

h2 {
    font-size: clamp(2rem, 3.5vw, 3rem);
}

h3 {
    font-size: 1.35rem;
}

p {
    margin-top: 0;
}


/* ---------------------------------------------------------
   4. CONTAINER
   --------------------------------------------------------- */

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

    margin-inline: auto;
}


/* ---------------------------------------------------------
   5. BUTTONS
   --------------------------------------------------------- */

.button {
    display: inline-flex;

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

    min-height: 50px;
    padding: 12px 22px;

    border: 0;
    border-radius: 999px;

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

    font-weight: 700;

    transition:
        transform var(--transition),
        background var(--transition),
        box-shadow var(--transition);
}

.button:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-soft);
}

.button:focus-visible,
a:focus-visible,
button:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 4px;
}


/* ---------------------------------------------------------
   6. HEADER
   --------------------------------------------------------- */

.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;

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

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

    backdrop-filter: blur(12px);
}

.header-inner {
    min-height: 78px;

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

    gap: 30px;
}


/* Logo */

.site-logo,
.footer-logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;

    white-space: nowrap;
}

.logo-mark {
    display: inline-flex;

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

    width: 43px;
    height: 43px;

    border-radius: 12px;

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

    font-size: 0.9rem;
    font-weight: 800;
}

.logo-text {
    color: var(--color-primary);

    font-size: 1.35rem;
    font-weight: 700;

    letter-spacing: -0.04em;
}

.logo-text strong {
    font-weight: 800;
}


/* Navigation */

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

.main-navigation a {
    position: relative;

    color: var(--color-text-soft);

    font-size: 0.95rem;
    font-weight: 600;

    transition:
        color var(--transition);
}

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


/* Mobile menu button */

.mobile-menu-toggle {
    display: none;

    width: 46px;
    height: 46px;

    padding: 10px;

    border: 1px solid var(--color-border);
    border-radius: 10px;

    background: var(--color-white);
}

.mobile-menu-toggle span {
    display: block;

    width: 100%;
    height: 2px;

    margin: 5px 0;

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


/* ---------------------------------------------------------
   7. FOOTER
   --------------------------------------------------------- */

.site-footer {
    margin-top: 80px;

    padding: 70px 0 25px;

    background: var(--color-primary);
    color: rgba(255, 255, 255, 0.78);
}

.footer-main {
    display: grid;

    grid-template-columns:
        minmax(240px, 1.2fr)
        minmax(0, 2fr);

    gap: 70px;

    padding-bottom: 50px;

    border-bottom:
        1px solid rgba(255, 255, 255, 0.14);
}

.footer-brand p {
    max-width: 390px;

    margin-top: 20px;

    line-height: 1.7;
}

.footer-logo .logo-text {
    color: var(--color-white);
}

.footer-logo .logo-mark {
    background: var(--color-white);
    color: var(--color-primary);
}

.footer-links {
    display: grid;

    grid-template-columns:
        repeat(3, minmax(0, 1fr));

    gap: 35px;
}

.footer-column {
    display: flex;
    flex-direction: column;
    align-items: flex-start;

    gap: 9px;
}

.footer-column h3 {
    margin-bottom: 8px;

    color: var(--color-white);

    font-family: var(--font-primary);
    font-size: 1rem;
}

.footer-column a {
    color: rgba(255, 255, 255, 0.72);

    font-size: 0.92rem;

    transition:
        color var(--transition);
}

.footer-column a:hover {
    color: var(--color-white);
}

.footer-bottom {
    display: flex;

    justify-content: space-between;
    gap: 30px;

    padding-top: 25px;

    color: rgba(255, 255, 255, 0.55);

    font-size: 0.82rem;
}

.footer-bottom p {
    margin: 0;
}


/* ---------------------------------------------------------
   8. RESPONSIVE
   --------------------------------------------------------- */

@media (max-width: 1050px) {

    .main-navigation {
        gap: 17px;
    }

    .main-navigation a {
        font-size: 0.88rem;
    }
}


@media (max-width: 900px) {

    .mobile-menu-toggle {
        display: block;
    }

    .main-navigation {
        position: absolute;

        top: 78px;
        left: 0;
        right: 0;

        display: none;
        flex-direction: column;
        align-items: stretch;

        padding: 12px 20px 22px;

        background: var(--color-white);

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

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

    .main-navigation.is-open {
        display: flex;
    }

    .main-navigation a {
        padding: 14px 8px;

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

        font-size: 1rem;
    }

    .main-navigation a:last-child {
        border-bottom: 0;
    }

    .footer-main {
        grid-template-columns: 1fr;
        gap: 45px;
    }
}


@media (max-width: 650px) {

    body {
        font-size: 16px;
    }

    .container {
        width: min(
            calc(100% - 28px),
            var(--container-width)
        );
    }

    .header-inner {
        min-height: 70px;
    }

    .main-navigation {
        top: 70px;
    }

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

    .footer-bottom {
        flex-direction: column;
        gap: 8px;
    }
}


@media (max-width: 430px) {

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

    .logo-text {
        font-size: 1.2rem;
    }

    .logo-mark {
        width: 39px;
        height: 39px;
    }
}


/* ---------------------------------------------------------
   9. REDUCED MOTION
   --------------------------------------------------------- */

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

    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
    }
}