@import url('https://fonts.googleapis.com/css2?family=Work+Sans:ital,wght@0,100..900;1,100..900&display=swap');

:root {
    --sand-50: #fdf8f1;
    --sand-100: #f6ecdc;
    --sand-200: #ecd7b9;
    --slate-700: #3f4a56;
    --slate-900: #1c2733;
    --amber-500: #c27a2c;
    --amber-600: #a96218;
    --teal-500: #2f6574;
    --shadow-soft: 0 18px 50px rgba(30, 38, 45, 0.12);
    --shadow-card: 0 14px 34px rgba(23, 33, 43, 0.08);
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    color: var(--slate-900);
    background:
    radial-gradient(circle at 10% 15%, rgba(194, 122, 44, 0.11), transparent 34%),
    radial-gradient(circle at 90% 8%, rgba(47, 101, 116, 0.07), transparent 30%),
    linear-gradient(160deg, #fefcf8 0%, #f6efe3 100%);
}

.work-sans-font {
  font-family: "Work Sans", sans-serif;
  font-optical-sizing: auto;
  font-weight: 400;
  font-style: normal;
}

/* shared styles */
.display-flex{
    display: flex;
}

.text-primary{
    color: var(--amber-500);
}

/* dark 02 */
.text-gray{
    color: var(--slate-700);
}

/* dark03 */
.text-light-gray{
    color: #727272;
}

.bg-light{
    background: linear-gradient(180deg, rgba(253, 248, 241, 0.95) 0%, rgba(246, 236, 220, 0.5) 100%);
}

.btn-primary{
    background-color: var(--amber-500);
    color: white;
    padding: 16px 24px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 999px;
    border: none;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.25s ease, box-shadow 0.25s ease, background-color 0.25s ease;
    box-shadow: 0 10px 22px rgba(169, 98, 24, 0.24);
    cursor: pointer;
}

.btn-primary:hover{
    background-color: var(--amber-600);
    transform: translateY(-2px);
}

.btn-secondary{
    color: var(--slate-900);
    text-decoration: none;
    border: 1px solid rgba(57, 68, 79, 0.25);
    padding: 14px 22px;
    border-radius: 999px;
    font-weight: 600;
    background: rgba(255, 255, 255, 0.85);
    transition: transform 0.25s ease, background-color 0.25s ease;
}

.btn-secondary:hover{
    background-color: rgba(255, 255, 255, 0.98);
    transform: translateY(-2px);
}

main{
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 20px;
}

main > section{
    margin-top: 130px;
}

.section-title{
    font-size: 2.8rem;
    font-weight: 700;
    margin-bottom: 16px;
}

/* header styles */
.hero-shell{
    position: relative;
    overflow: hidden;
    padding-bottom: 72px;
}

/* navbar related styles */
.navbar{
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    position: sticky;
    top: 18px;
    z-index: 20;
    padding: 14px 22px;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.58);
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.62);
    box-shadow: 0 8px 26px rgba(57, 68, 79, 0.07);
    transition: background-color 0.25s ease, box-shadow 0.25s ease;
}

.navbar.scrolled{
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 12px 28px rgba(23, 33, 43, 0.12);
}

.brand{
    font-weight: 700;
    font-size: 2rem;
    margin: 0;
}

.brand span{
    color: var(--amber-500);
}

.nav-links{
    padding: 0;
    margin: 0;
}

.nav-item{
    list-style: none;
    margin-right: 22px;
}

.nav-link{
    text-decoration: none;
    font-weight: 600;
    transition: color 0.2s ease, opacity 0.2s ease;
}

.nav-link.active{
    color: var(--amber-500);
}

.nav-link:hover{
    color: var(--amber-500);
}

.menu-toggle{
    display: none;
    border: 1px solid rgba(63, 74, 86, 0.22);
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.78);
    padding: 10px 12px;
    font-weight: 600;
    color: var(--slate-900);
    cursor: pointer;
}

.nav-cta{
    white-space: nowrap;
}

.navbar, .banner{
    max-width: 1440px;
    margin: 0 auto;
}

/* banner related styles */
.banner-content{
    max-width: 850px;
    margin: 0 auto;
    text-align: center;
    margin-bottom: 50px;
    position: relative;
    z-index: 2;
}

.banner-title{
    font-weight: 700;
    font-size: 3.7rem;
    margin-bottom: 18px;
    line-height: 1.12;
}

.banner-description{
    font-size: 1.05rem;
    color: #56606a;
    max-width: 760px;
    margin: 0 auto;
    line-height: 1.7;
}

.banner{
    position: relative;
    padding-top: 54px;
}

.hero-actions{
    display: flex;
    justify-content: center;
    gap: 14px;
    margin-top: 24px;
}

.banner-glow{
    position: absolute;
    width: 340px;
    height: 340px;
    border-radius: 50%;
    filter: blur(24px);
    pointer-events: none;
}

.banner-glow-left{
    left: -80px;
    top: 40px;
    background: rgba(194, 122, 44, 0.16);
    animation: floatGlow 8s ease-in-out infinite;
}

.banner-glow-right{
    right: -80px;
    top: 120px;
    background: rgba(47, 101, 116, 0.12);
    animation: floatGlow 9s ease-in-out infinite reverse;
}

.banner-image{
    width: 100%;
    border-radius: 18px;
    box-shadow: var(--shadow-soft);
    position: relative;
    z-index: 2;
}

/* team and feature related styles */
.teams{
    align-items: center;
}

.team-img-container{
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.team-img-container img{
    width: 100%;
    border-radius: 18px;
    box-shadow: var(--shadow-card);
    transition: transform 0.25s ease;
}

.team-img-container img:hover{
    transform: translateY(-6px);
}

.our-features{
    margin-left: 130px;
    max-width: 530px;
}

#quick-list{
    font-weight: 500;
}

/* features section related styles */

.features{
    gap: 140px;
}

#feature-section-title{
    border-left: 5px solid var(--amber-500);
    padding-left: 20px;
}

.feature-card{
    padding: 30px;
    border-radius: 14px;
    background-color: rgba(255, 255, 255, 0.85);
    border: 1px solid rgba(57, 68, 79, 0.08);
    box-shadow: var(--shadow-card);
    margin-bottom: 20px;
    transition: transform 0.25s ease;
}

.feature-card:hover{
    transform: translateX(4px);
}

.feature-card .feature-title{
    font-weight: 600;
    font-size: 1.25rem;
    margin-top: 0px;
    margin-bottom: 0px;
}

#experience-badge{
    padding: 45px 42px;
    font-size: 1.5rem;
    font-weight: 500;
    margin-left: -100px;
    margin-top: -100px;
    border: 6px solid rgba(255, 255, 255, 0.7);
}

#experience-year{
    font-size: 4rem;
    font-weight: 700;
}

.featured-architect img{
    width: 100%;
    border-radius: 20px;
}

/* some facts related styles */
.facts-container{
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 22px;
}
.fact-card{
    border: 1px solid rgba(231, 131, 37, 0.35);
    width: 240px;
    height: 240px;
    border-radius: 14px;
    text-align: center;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.8);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.fact-card:hover{
    transform: translateY(-6px);
    box-shadow: var(--shadow-card);
}

.fact-number{
    font-size: 2.8rem;
    font-weight: 600;
    margin-top: 5px;
    margin-bottom: 10px;
}

.fact-name{
    font-size: 1.25rem;
    font-weight: 600;
    margin-top: 10px;
}

.fact-description{
    max-width: 540px;
}


/* sponsor related styles */
.sponsor-info{
    max-width: 540px;
    margin: 50px auto;
    text-align: center;
}

.sponsor-companies{
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 14px;
    align-items: center;
}

.sponsor-companies img{
    filter: grayscale(100%);
    opacity: 0.7;
    transition: opacity 0.2s ease, filter 0.2s ease, transform 0.2s ease;
}

.sponsor-companies img:hover{
    opacity: 1;
    filter: grayscale(0);
    transform: translateY(-2px);
}

/* Footer */
.site-footer{
    margin-top: 140px;
    padding: 62px 20px 20px;
    background:
        radial-gradient(circle at 12% 12%, rgba(194, 122, 44, 0.2), transparent 30%),
        radial-gradient(circle at 88% 0%, rgba(47, 101, 116, 0.22), transparent 26%),
        linear-gradient(135deg, #1f2b37 0%, #19242f 40%, #204153 100%);
    color: #e8eef3;
}

.footer-content{
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 36px;
    align-items: start;
    padding: 0 0 28px;
    border-bottom: 1px solid rgba(232, 238, 243, 0.2);
}

.footer-brand{
    margin-top: 0;
    margin-bottom: 12px;
    font-size: 2rem;
    letter-spacing: 0.4px;
}

.footer-title{
    margin-top: 0;
    margin-bottom: 14px;
    font-size: 1.08rem;
    letter-spacing: 0.3px;
}

.footer-intro,
.footer-contact{
    display: grid;
    gap: 8px;
}

.footer-links{
    display: grid;
    gap: 10px;
}

.footer-links a{
    color: #e8eef3;
    text-decoration: none;
    opacity: 0.9;
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.footer-links a:hover{
    color: var(--sand-200);
    opacity: 1;
    transform: translateX(2px);
}

.footer-copy{
    color: #d4dde5;
    font-size: 1rem;
    font-weight: 400;
    margin-top: 0;
    margin-bottom: 0;
    line-height: 1.6;
}

.footer-chip{
    display: inline-flex;
    width: fit-content;
    margin-top: 8px;
    color: #f7efe2;
    text-decoration: none;
    border: 1px solid rgba(232, 238, 243, 0.34);
    border-radius: 999px;
    padding: 8px 16px;
    font-size: 0.9rem;
    font-weight: 600;
    transition: background-color 0.2s ease, border-color 0.2s ease;
}

.footer-chip:hover{
    background-color: rgba(255, 255, 255, 0.1);
    border-color: rgba(232, 238, 243, 0.58);
}

.footer-bottom{
    max-width: 1200px;
    margin: 0 auto;
    padding-top: 18px;
}

.footer-legal{
    text-align: center;
    font-size: 0.95rem;
    color: #bfccd9;
}

/* reveal animation */
[data-reveal]{
    opacity: 0;
    transform: translateY(34px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-reveal].revealed{
    opacity: 1;
    transform: translateY(0);
}

@keyframes floatGlow {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-18px); }
}

/* responsive media query */
@media screen and (max-width: 576px) {
    .navbar,
    .features,
    .teams{
        flex-direction: column;
    }

    .navbar{
        position: relative;
        top: 0;
        border-radius: 0;
        border-left: none;
        border-right: none;
        padding: 18px;
    }

    .menu-toggle{
        display: inline-flex;
        align-self: flex-end;
    }

    .nav-links{
        width: 100%;
        display: none;
        flex-direction: column;
        margin-top: 8px;
        border-top: 1px solid rgba(63, 74, 86, 0.12);
        padding-top: 12px;
    }

    .nav-links.open{
        display: flex;
    }

    .nav-item{
        margin-right: 0;
        margin-bottom: 10px;
    }

    .nav-cta{
        width: 100%;
    }

    .banner-title{
        font-size: 2.35rem;
    }

    .hero-actions{
        flex-direction: column;
        align-items: center;
    }

    .team-img-container, 
    .facts-container, 
    .sponsor-companies
    {
        grid-template-columns: 1fr;
    }

    .facts-container{
        justify-items: center;
        gap: 24px;
    }

    .sponsor-companies{
        justify-items: center;
        gap: 50px;
    }

    .our-features{
        margin-left: 20px;
    }

    .section-title{
        font-size: 2.2rem;
    }

    #experience-badge{
        margin-top: 20px;
        margin-left: 20px;
        font-size: 1.2rem;
        padding: 28px 26px;
    }

    #experience-year{
        font-size: 2.5rem;
    }

    .footer-content{
        grid-template-columns: 1fr;
        text-align: center;
        gap: 26px;
    }

    .footer-links{
        justify-items: center;
    }

    .footer-intro,
    .footer-contact{
        justify-items: center;
    }

    .footer-chip{
        margin-top: 12px;
    }
}

/* medium size device */
@media screen and (min-width: 576px) and (max-width: 992px) {
    .teams, .features{
        flex-direction: column;
    }
    .our-features{
        margin: 50px auto;
    }

    .sponsor-companies, .facts-container {
        grid-template-columns: repeat(2, 1fr);
        gap: 50px;
        justify-items: center;
    }

    #experience-badge{
        margin-top: 20px;
        margin-left: 20px;
    }

    .banner-title{
        font-size: 3rem;
    }

    .footer-content{
        grid-template-columns: 1fr 1fr;
        row-gap: 28px;
    }
}