:root {
/* colors */
    --russian-violet: hsl(269, 36%, 22%);
    --dark-purple: hsl(268, 22%, 15%);
    --eerie-black: hsl(240, 4%, 10%);
    --davys-gray: hsl(0, 0%, 34%);
    --light-gray: hsl(0, 0%, 84%);
    --cultured-1: hsl(0, 0%, 98%);
    --cultured-2: hsl(280, 14%, 96%);
    --cultured-3: hsl(280, 9%, 94%);
    --gainsboro: hsl(0, 1%, 85%);
    --black_10: hsla(0, 0%, 0%, 0.1);
    --black_5: hsla(0, 0%, 0%, 0.05);
    --pumpkin: hsl(22, 90%, 56%);
    --white: hsl(0, 0%, 100%);
    --black: hsl(0, 0%, 0%);

/* typography */

    --ff-poppins: 'Poppins', sans-serif;
    --ff-roboto: 'Roboto', sans-serif;

    --fs-1: 3rem;
    --fs-2: 2rem;
    --fs-3: 1.5rem;
    --fs-4: 1.4rem;
    --fs-5: 1.3rem;

    --fw-900: 900;
    --fw-700: 700;
    --fw-600: 600;
    --fw-500: 500;

/* spacing */
    --section-padding: 25px;

/* boz shadow */
    --shadow-1: 0px 0px 20px var(--black_10);
    --shadow-2: 0 0 20px 4px var(--black_5);

/* border radius */
    --radius-6: 6px;
    --radius-10: 10px;

/* transition */
    --transition-1: 0.25s ease;
    --transition-2: 0.5s ease;
    --cubic-in: cubic-bezier(0.51, 0.03, 0.64, 0.28);
    --cubic-out: cubic-bezier(0.33, 0.85, 0.4, 0.96);

}

/*-----------------------------------*\
  #RESET
\*-----------------------------------*/

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

li { list-style: none; }

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

a,
span,
button,
ion-icon { display: block; }

button {
    background: none;
    border: none;
    font: inherit;
    cursor: pointer;
}

ion-icon { pointer-events: none; }

address { font-style: normal; }

html {
    font-family: var(--ff-poppins);
    font-size: 10px;
    scroll-behavior: smooth;
}

body {
    background-color: var(--white);
    font-size: var(--fs-3);
    color: var(--davys-gray);
}

:focus-visible { outline-offset: 4px; }

::-webkit-scrollbar { width: 10px; }

::-webkit-scrollbar-track { background-color: hsl(0, 0%, 98%); }

::-webkit-scrollbar-thumb { background-color: hsl(0, 0%, 80%); }

::-webkit-scrollbar-thumb:hover { background-color: hsl(0, 0%, 70%); }

/*-----------------------------------*\
  #REUSED STYLE
\*-----------------------------------*/

.container { padding-inline: 15px; }

.btn {
    color: var(--color, var(--white));
    font-size: var(--fs-4);
    max-width: var(--width, max-content);
    padding: 10px 20px;
    border-radius: var(--radius-10);
    transition: var(--transition-1);
}

.btn-primary,
.btn-secondary:is(:hover, :focus) { background-color: var(--pumpkin); }

.btn-primary:is(:hover, :focus),
.btn-secondary { background-color: var(--russian-violet); }

.btn-outline {
    --color: var(--pumpkin);
    --width: 100%;
    text-align: center;
    font-weight: var(--fw-500);
    border: 1px solid var(--cultured-3);
}

.btn-outline:is(:hover, :focus) {
    background-color: var(--pumpkin);
    color: var(--white);
}

.section { padding-block: var(--section-padding); }

.section-subtitle {
    color: var(--pumpkin);
    font-size: var(--fs-2);
    margin-block-end: 5px;
}
.section-subtitle-text {
    font-size: var(--fs-3);
    margin-block-end: 5px;
    text-align: center;
}

.h1,
.h2,
.h3 { font-family: var(--ff-roboto); }

.h1,
.h2 { font-size: var(--fs-1); }

.h2,
.h3 { color: var(--eerie-black); }

.h3 { font-size: var(--fs-2); }

.section-text,
.card-text {
    font-size: var(--fs-3);
    line-height: 1.8;
}

.btn-list {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
}

.btn-item-link {
    overflow: hidden;
    border-radius: var(--radius-10);
}

.btn-item-link .img { width: 136px; }

.section-title { margin-block: 10px 20px; }

:is(.about, .blog) :is(.section-subtitle, .section-title) {
    text-align: center;
}

.img-holder {
    aspect-ratio: var(--width) / var(--height);
    background-color: var(--light-gray);
}

.img-cover {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-2);
}

/*-----------------------------------*\
  #HEADER
\*-----------------------------------*/

.header {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    background-color: var(--russian-violet);
    z-index: 4;
}

.header.active {
    position: fixed;
    transform: translateY(-100%);
    filter: drop-shadow(var(--shadow-1));
    animation: slideIn 0.5s ease forwards;
}

@keyframes slideIn {
    0% { transform: translateY(-100%); }
    100% { transform: translateY(0); }
}

.header > .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-toggle-btn {
    background-color: var(--pumpkin);
    color: var(--white);
    font-size: 35px;
    padding: 2px 8px;
}

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

.navbar {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: var(--white);
    padding-inline: 15px;
    overflow: hidden;
    max-height: 0;
    visibility: hidden;
    transition: 0.25s var(--cubic-out);
}

.navbar.active {
    max-height: 340px;
    visibility: visible;
    transition-duration: 0.5s;
}

.logo-img {
    height: 60px;
    width: auto;
    display: block;
}

.navbar-list {
    background-color: var(--russian-violet);
    margin-block-end: 15px;
    padding: 20px 30px;
}

.navbar-link {
    color: var(--white);
    font-size: var(--fs-3);
    font-weight: var(--fw-600);
    padding-block: 7px;
    transition: var(--transition-1);
}

.navbar-link:is(:hover, :focus, .active) { color: var(--pumpkin); }

.navbar .btn { margin-block: 8px; }


/*-----------------------------------*\
  #Banner
\*-----------------------------------*/

.banner {
    background-color: var(--russian-violet);
    color: var(--white);
    padding-block-start: calc(var(--section-padding) + 25px);
}

.banner-content { margin-block-end: 20px; }

.banner-title { margin-block: 15px 20px; }

.banner .section-text { margin-block-end: 30px; }

.hero-img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
}


/*-----------------------------------*\
  #ABOUT
\*-----------------------------------*/

.about .section-title { margin-block-end: 30px; }

.about-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 10px;
    list-style: none;
    padding: 0;
}

.about-item {
    position: relative;
    transition: var(--transition-2);
    align-items: center;
}

.about-item::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 40%;
    background-color: var(--cultured-2);
    border-radius: var(--radius-10);
    z-index: -1;
}

.about-item:hover { transform: translateY(-10px); }

.about-card {
    background-color: var(--white);
    box-shadow: var(--shadow-2);
    margin: 20px;
    padding: 20px;
    border-radius: var(--radius-10);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
}

.about-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.35);
}

.about-card .card-icon {
    color: var(--pumpkin);
    font-size: 35px;
    max-width: max-content;
    margin-inline: auto;
}

.about-card .card-icon ion-icon { --ionicon-stroke-width: 35px; }

.about-card .card-title { margin-block: 18px 15px; }

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10000;
}
.modal-box {
    background-color: var(--white);
    padding: 20px;
    border-radius: 12px;
    width: 90%;
    max-width: 700px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.2);
}
.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.modal-summary {
    margin-top: 15px;
    line-height: 1.5;
}
.modal-close {
    border: none;
    background: none;
    font-size: 1.5rem;
    cursor: pointer;
}



/*-----------------------------------*\
  #FEATURES
\*-----------------------------------*/

.features { background-color: var(--cultured-3); }

.features .features-banner,
.features-2 .features-banner {
    margin-block-end: 20px;
    max-width: 350px;
    width: 100%;
    margin-inline: auto;
}

.features .section-text,
.features-item:not(:last-child) { margin-block-end: 25px; }

.features .section-subtitle {
    text-align: center;
}

.features-list { margin-block-end: 35px; }

.features-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
}

.features-item .item-icon {
    background-color: var(--pumpkin);
    color: var(--white);
    font-size: 20px;
    padding: 12px;
    border-radius: 50%;
}

.features-item .item-title { margin-block-end: 10px; }

.features-banner .features-img {
    width: 100%;
    height: auto;
    object-fit: contain;
    display: block;
}

/*-----------------------------------*\
  #FEATURES 2
\*-----------------------------------*/

.features-2 .section-text:last-of-type { margin-block: 30px; }

.features-2 .features-content { margin-block-end: 30px; }

.features-2 .features-banner .features-img {
    width: 100%;
    height: auto;
    object-fit: contain;
    display: block;
}


/*-----------------------------------*\
  #FOOTER
\*-----------------------------------*/

.footer {
    background-color: var(--russian-violet);
    padding-block: 0;
}

.footer-top .container {
    display: flex;                 /* row layout */
    justify-content: space-between;
    align-items: center;
    gap: 30px;

    flex-direction: row;
    flex-wrap: nowrap;
}

.footer-top .section-text {
    color: var(--white);
    margin-block: 15px 22px;
}

.footer-img {
    height: 80px;
    width: auto;
    display: block;
    margin-block: 10px;
}

.social-list {
    display: flex;
    gap: 12px;
}

.social-link {
    background-color: var(--white);
    padding: 12px;
    border-radius: 50%;
    transition: var(--transition-1);
}

.social-link:is(:hover, :focus) {
    background-color: var(--pumpkin);
    color: var(--white);
    transform: translateY(-2px);
}

.footer-list-title {
    color: var(--white);
    font-family: var(--ff-roboto);
    font-size: var(--fs-2);
    font-weight: var(--fw-700);
    margin-block: 0 10px;
}

.footer-link {
    color: var(--white);
    font-size: var(--fs-4);
    margin-block-start: 10px;
    transition: var(--transition-1);
}

.footer-link:is(:hover, :focus),
.footer-item .item-link:not(.address):is(:hover, :focus) {
    color: var(--pumpkin);
}

.footer-item {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    margin-block-start: 10px;
}

.footer-item ion-icon {
    flex-shrink: 0;
    color: var(--pumpkin);
    font-size: 17px;
    margin-block-start: 2px;
}

.footer-item .item-link {
    font-size: var(--fs-4);
    transition: var(--transition-1);
}

.footer-bottom {
    padding-block: 12px;
    border-block-start: 1px solid var(--gainsboro);
}

.copyright {
    color: var(--white);
    font-size: var(--fs-4);
    text-align: center;
}

.copyright-link {
    color: var(--pumpkin);
    display: inline-block;
}

/*-----------------------------------*\
  #BACK TO TOP
\*-----------------------------------*/

.back-top-btn {
    position: fixed;
    bottom: 30px;
    right: -36px;
    background-color: var(--pumpkin);
    color: var(--white);
    padding: 10px;
    border-radius: 50%;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-1);
}

.back-top-btn.active {
    opacity: 1;
    visibility: visible;
    transform: translateX(-51px);
}

/*-----------------------------------*\
  #MEDIA QUERIES
\*-----------------------------------*/

/* responsive for larger than 575px screen */
@media (min-width: 575px) {

/* reused style */
    .container {
        max-width: 540px;
        width: 100%;
        margin-inline: auto;
    }


/* features/ about */

    .features-list {
        grid-template-columns: 1fr 1fr;
        column-gap: 20px;
    }


/* footer */

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

}

/* responsive for larger than 768px screen */
@media (min-width: 768px) {

/* custom property */

    :root {
    /* typography */

        --fs-1: 4.5rem;

    }

/* reused styles */

    .container { max-width: 720px; }

    .h2 { --fs-1: 3.5rem; }

    .btn {
        font-size: unset;
        padding: 15px 30px;
    }

    .btn-list { gap: 20px; }

    .btn-item-link .img { width: 150px; }

/* header */
    .navbar .btn {
        font-size: var(--fs-4);
        padding: 10px 20px;
    }

/* responsive for larger than 992px screen */
@media (min-width: 992px) {

/* custom property */

    :root {

/* spacing */
        --section-padding: 100px;

    }

/* reused styles */
    .container { max-width: 960px; }

    .btn-item-link .img { width: 185px; }

/* header */
    .nav-toggle-btn { display: none; }

    .navbar,
    .navbar.active,
    .navbar-list { all: unset; }

    .navbar-list {
        display: flex;
        align-items: center;
        gap: 30px;
    }

/* banner */
    .banner .container {
        display: grid;
        grid-template-columns: 1fr 1fr;
        align-items: center;
    }

    .banner-content { margin-block-end: 0; }

/* about */
    .about .section-title { margin-block-end: 40px; }

    .about-list { grid-template-columns: repeat(4, 1fr); }

/* features, features 2 */
    :is(.features, .features-2) .container {
        display: grid;
        grid-template-columns: 1fr 1fr;
        align-items: center;
        gap: 60px;
    }

    .features-banner { margin-block-end: 0; }

/* footer */

    .footer-top .container {
        grid-template-columns: 1fr 0.5fr 0.5fr 0.5fr;
        gap: 50px;
    }

}

/* responsive for larger than 1200px screen */
@media (min-width: 1200px) {

/* custom property */
    :root {

/* typography */
        --fs-1: 5rem;

    }

/* reused style */

    .container { max-width: 1180px; }

    .section-text { --fs-4: 1.5rem; }

    .h2 { --fs-1: 4rem; }

    .h3 { --fs-2: 2.2rem; }

/* header */
    .header { padding-block: 20px; }

    :is(.header, .banner) .container {
        max-width: unset;
        padding-inline: 25px;
    }

    .header .btn {
        font-size: var(--fs-3);
        padding: 14px 30px;
        border-radius: var(--radius-6);
        margin-block: 0;
    }

/* banner */
    .banner { --section-padding: 30px; }

/* about */
    .about-list { gap: 25px; }

    .about-card { padding: 30px; }

/* footer */
    .footer-list-title { --fs-2: 2.2rem; }

    .social-link {
        font-size: 18px;
        padding: 14px;
    }

    .footer-link,
    .copyright { --fs-4: 1.5rem; }

/* back to the top */
    .back-top-btn {
        font-size: 24px;
        padding: 13px;
        bottom: 40px;
    }

    .back-top-btn.active { transform: translateX(-80px); }

}