/* 
*font*
*/
@font-face {
    font-family: "vazir";
    src: url(../fonts/Farsi-Digits-Without-Latin/Vazir-FD-WOL.ttf) format(truetype),
        url(../fonts/Farsi-Digits-Without-Latin/Vazir-FD-WOL.woff) format(woff),
        url(../fonts/Farsi-Digits-Without-Latin/Vazir-FD-WOL.woff2) format(woff2),
        url(../fonts/Farsi-Digits-Without-Latin/Vazir-FD-WOL.eot) format(eot);
}

/* 
*variable*
*/
:root {
    --clr-primary-1: #2a2f61;
    --clr-primary-2: #43476e;
    --clr-primary-3: #5a5f92;
    --clr-primary-4: #888bad;
    --clr-primary-5: #a1a6cc;
    --clr-gray-1: #102a42;
    --clr-gray-2: #617d98;
    --clr-gray-3: #f1f5f8;
    --clr-white: #fff;
    --ff-vazir: "vazir", sans-serif;
    --transition: all 0.5s linear;
    --b-radius: 0.7rem;
    --light-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    --dark-shadow: 0 5px 15px rgba(0, 0, 0, 0.5);
    --max-width: 1170px;
}

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

body {
    font-family: var(--ff-vazir);
    background: var(--clr-white);
    color: var(--clr-gray-1);
    line-height: 1.5;
    font-size: 0.9rem;
}

ul {
    list-style-type: none;
}

a {
    text-decoration: none;
}

img {
    display: block;
    width: 100%;
}

h1,
h2,
h3,
h4 {
    line-height: 1.3;
    margin-bottom: 0.8rem;
    font-family: var(--ff-vazir);
}

h1 {
    font-size: 3rem;
}

h2 {
    font-size: 2.1rem;
}

h3 {
    font-size: 1.4rem;
}

h4 {
    font-size: 0.9rem;
}

p {
    margin-bottom: 0.8rem;
    color: var(--clr-gray-2);
}

.btn {
    background: var(--clr-primary-2);
    color: var(--clr-white);
    padding: 0.4rem 0.8rem;
    display: inline-block;
    transition: var(--transition);
    font-size: 0.9rem;
    font-family: var(--ff-vazir);
    border: 2px solid transparent;
    border-radius: var(--b-radius);
    box-shadow: var(--light-shadow);
    cursor: pointer;
}

.btn:hover {
    background: var(--clr-primary-3);
    color: var(--clr-primary-1);
}

.section {
    padding: 4rem 0;
}

.bg_section {
    background: var(--clr-gray-3);
}

.section_center {
    width: 90vw;
    margin: 0 auto;
    max-width: var(--max-width);
}

.section_title {
    text-align: center;
    margin-bottom: 4rem;
}

.underline {
    width: 5rem;
    height: 0.3rem;
    background: var(--clr-primary-2);
    margin: 0 auto 1.3rem auto;
}

.social_icons {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    justify-items: center;
    column-gap: 1.5rem;
    margin-top: 3rem;
}

.social_icons a {
    color: var(--clr-primary-1);
    font-size: 1.5rem;
    transition: var(--transition);
}

.social_icons a:hover {
    color: var(--clr-primary-4);
}

/* 
*navbar*
*/
.nav {
    background: var(--clr-primary-5);
    height: 5rem;
    padding: 1rem;
    transition: var(--transition);
    z-index: 3;
}

.navbar_fixed {
    position: fixed;
    top: 0;
    right: 0;
    width: 100%;
    background: var(--clr-white);
    box-shadow: var(--light-shadow);
}

.nav_section {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
}

.nav_header {
    display: grid;
    grid-template-columns: auto 1fr;
    align-items: center;
}

.nav_header h3 {
    font-size: 2rem;
}

.nav_btn {
    justify-self: end;
    background: transparent;
    border-color: transparent;
    color: var(--clr-primary-2);
    font-size: 2rem;
    cursor: pointer;
}

.nav_links {
    display: none;
}

/* 
*sidebar*
*/
.sidebar {
    position: fixed;
    top: 0;
    right: 0;
    width: 100%;
    height: 100%;
    background: var(--clr-gray-3);
    display: grid;
    place-content: center;
    z-index: 4;
    transform: translateX(100%);
    transition: var(--transition);
}

.show_sidebar {
    transform: translateX(0);
}

.close_btn {
    position: absolute;
    top: 1rem;
    left: 1rem;
    font-size: 3rem;
    background: transparent;
    border: transparent;
    color: red;
    cursor: pointer;
    transition: var(--transition);
}

.close_btn:hover {
    color: pink;
}

.sidebar_links {
    text-align: center;
}

.sidebar_links a {
    font-size: 1.5rem;
    color: var(--clr-primary-1);
    display: inline-block;
    margin-bottom: 1.5rem;
}

.sidebar_links a:hover {
    color: var(--clr-primary-3);
}

/* 
*hero*
*/
.hero {
    background: var(--clr-primary-5);
}

.hero_section {
    min-height: calc(100vh - 5rem);
    display: grid;
    place-items: center;
}

.hero_info h4 {
    color: var(--clr-gray-2);
    margin-top: 2rem;
}

.hero_btn {
    margin-top: 1.3rem;
}

.hero_icons {
    justify-items: start;
}

.hero_img {
    display: none;
}

.hero .underline {
    margin-right: 0;
    margin-bottom: 1rem;
}

/* 
*about*
*/
.about_section {
    display: grid;
    gap: 3rem;
}

.about_img {
    justify-self: center;
}

.about_img img {
    max-width: 25rem;
    max-height: 30rem;
    object-fit: cover;
    border-radius: var(--b-radius);
    position: relative;
}

.about_title .underline {
    margin-right: 0;
}

/* 
*services*
*/
.service {
    background: var(--clr-white);
    padding: 3rem 1.5rem;
    border-radius: var(--b-radius);
    text-align: center;
    margin-bottom: 2rem;
}

.service,
.service p,
.service .underline {
    transition: var(--transition);
}

.service:hover {
    background: var(--clr-primary-2);
    color: var(--clr-white);
}

.service:hover p {
    color: var(--clr-white);
}

.service:hover .underline {
    background: var(--clr-white);
}

.service .underline {
    width: 3rem;
    height: 0.2rem;
}

/* 
*projcts*
*/
.project {
    background: var(--clr-primary-2);
    position: relative;
    margin-bottom: 3rem;
    border-radius: var(--b-radius);
    overflow: hidden;
}

.project::after {
    content: "";
    position: absolute;
    top: 0;
    right: 0;
    width: 100%;
    height: 100%;
    border: 0.3rem solid var(--clr-white);
    transition: var(--transition);
    border-radius: var(--b-radius);
    opacity: 0;
}

.project:hover::after {
    opacity: 1;
    transform: scale(0.7);
}

.project_info {
    position: absolute;
    top: 50%;
    right: 50%;
    transform: translate(50%, -50%);
    color: var(--clr-white);
    opacity: 0;
    transition: var(--transition);
}

.project:hover .project_info {
    opacity: 1;
}

.img_project {
    transition: var(--transition);
    height: 15rem;
    object-fit: cover;
}

.project:hover .img_project {
    opacity: 0.1;
}

.project_info p {
    color: var(--clr-white);
}

.project_text {
    width: 85vw;
    max-width: 30rem;
    margin: 0 auto;
}

/* 
*connect*
*/
.connect {
    display: grid;
    place-items: center;
    background: var(--clr-primary-1);
    position: relative;
    min-height: 40rem;
    padding: 10rem 0 5rem 0;
    margin: 5rem 0;
    -webkit-clip-path: polygon(50% 0%,
            100% 10%,
            100% 90%,
            50% 100%,
            0 90%,
            0 10%);
    clip-path: polygon(50% 0%,
            100% 10%,
            100% 90%,
            50% 100%,
            0 90%,
            0 10%);
}

.connect::after {
    content: "";
    position: absolute;
    top: 0;
    right: 0;
    width: 100%;
    height: 100%;
    background: var(--clr-white);
    opacity: 0.5;
    z-index: -1;
}

.video_container {
    position: absolute;
    top: 0;
    right: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: -2;
}

.video_banner {
    background: var(--clr-primary-5);
    text-align: center;
    padding: 3rem 5rem 12rem 5rem;
    clip-path: polygon(0% 0%,
            100% 0%,
            100% 75%,
            75% 75%,
            75% 100%,
            50% 75%,
            0% 75%);
}

.video_text {
    max-width: 30rem;
}

/* 
*skills*
*/
.skills {
    background: var(--clr-primary-4);
}

.skills h3 {
    color: var(--clr-primary-1);
    margin: 1.5rem 0;
}

.skill {
    margin-bottom: 1.5rem;
}

.skill p {
    color: var(--clr-primary-2);
    margin-bottom: 1rem;
}

.skill_container {
    background: var(--clr-white);
    height: 1rem;
    width: 100%;
    border-radius: var(--b-radius);
    position: relative;
}

.skill_value {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 50%;
    border-radius: var(--b-radius);
    background: var(--clr-primary-1);

}

.value_50 {
    width: 50%;
}

.value_60 {
    width: 60%;
}

.value_40 {
    width: 40%;
}

.value_90 {
    width: 90%;
}

.skill_text {
    position: absolute;
    top: -1.5rem;
    transform: translateX(-50%)
}

.text_40 {
    left: 40%;
}

.text_50 {
    left: 50%;
}

.text_60 {
    left: 60%;
}

.text_90 {
    left: 90%;
}

/* 
**timeline
*/
.timeline_section {
    width: 80vw;
    max-width: 40rem;
}

.timeline_item {
    padding: 4rem 2rem;
    margin: 0;
    border-top: 2px dashed var(--clr-primary-2);
    position: relative;
}

.timeline_item p {
    margin-bottom: 0;
}

.timeline_item:nth-child(even) {
    border-left: 2px dashed var(--clr-primary-2);
    border-top-left-radius: 2rem;
    border-bottom-left-radius: 2rem;
    margin-right: 2rem;
    padding-right: 0;
}

.timeline_item:nth-child(odd) {
    border-right: 2px dashed var(--clr-primary-2);
    border-top-right-radius: 2rem;
    border-bottom-right-radius: 2rem;
    margin-left: 2rem;
    padding-left: 0;
}

.timeline_item:first-child {
    border-top: 0;
    border-top-right-radius: 0;
}

.timeline_item:last-child {
    border-bottom-left-radius: 0;
}

.number {
    position: absolute;
    top: 50%;
    transform: translate(-50%, -50%);
    background: var(--clr-primary-2);
    color: var(--clr-white);
    display: grid;
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    place-items: center;
}

.timeline_item:nth-child(even) .number {
    left: 0;
}

.timeline_item:nth-child(odd) .number {
    right: 0;
    transform: translate(50%, -50%);
}

/* 
blog
*/
.blog {
    background: var(--clr-gray-3);
}

.blog_section {
    display: grid;
    grid-template-columns: repeat(auto-fill,minmax(330px , 1fr));
    gap: 3rem 1rem;
}

.card {
    height: 27rem;
    perspective: 100rem;
    position: relative;
}

.card_side {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    transition: all 1.5S linear;
    border-radius: var(--b-radius);
    overflow: hidden;
}

.card_info {
    padding: 1rem 1.5rem;
}

.card_front {
    background: var(--clr-white);
}

.card_front img {
    height: 13rem;
    object-fit: cover;
}

.card_footer {
    display: grid;
    grid-template-columns: auto 1fr;
    align-items: center;
}

.card_footer img {
    height: 2rem;
    width: 2rem;
    border-radius: var(--b-radius);
}

.card_footer p {
    margin-bottom: 0;
    justify-self: end;
    font-size: 0.9rem;
    color: var(--clr-primary-2);
}

.card:hover .card_front {
    transform: rotateY(-180deg);
}

.card_back {
    transform: rotateY(180deg);
    background: var(--clr-primary-5);
    display: grid;
    place-items: center;
}

.card:hover .card_back {
    transform: rotateY(0);
}

/* 
*footer*
*/

footer {
    background: var(--clr-gray-1);
    padding-bottom: 2rem;
    display: grid;
    place-items: center;
}

footer .social_icons {
    margin-bottom: 2rem;
}

footer .social_icons a {
    color: var(--clr-primary-2);
}

footer .social_icons a:hover {
    color: var(--clr-primary-5);
}

footer p {
    font-size: 1.2rem;
}

/* 
*responsive*
*/
@media screen and (min-width:676px) {

    /* 
    *services*
    */
    .services_section {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        column-gap: 2rem;
    }

    /* 
    *projcets*
    */
    .projects_section {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        column-gap: 2rem;
    }
}

@media screen and (min-width:768px) {

    /* 
    *public styles*
    */
    body {
        font-size: 1rem;
    }

    h1 {
        font-size: 4rem;
    }

    h2 {
        font-size: 2.6rem;
    }

    h3 {
        font-size: 2rem;
    }

    h4 {
        font-size: 1.2rem;
    }

    h1,
    h2,
    h3,
    h4 {
        line-height: 1;
    }

    /* 
    *navbar*
    */
    .nav_section {
        display: grid;
        grid-template-columns: auto 1fr;
        align-items: center;
    }

    .nav_links {
        display: grid;
        justify-self: end;
        column-gap: 2rem;
        justify-items: center;
        grid-template-columns: repeat(5, 1fr);
    }

    .nav_links a {
        color: var(--clr-primary-1);
        transition: var(--transition);
        padding-bottom: 0.5rem;
        position: relative;
    }

    .nav_links a::before {
        content: "";
        position: absolute;
        bottom: 0px;
        top: auto;
        width: 0;
        height: 2px;
        background: var(--clr-primary-1);
        transition: var(--transition);
    }

    .nav_links a:hover::before {
        width: 100%;
    }

    .nav_links a:hover {
        color: var(--clr-primary-4);
    }

    .nav_btn {
        display: none;
    }

    /* 
    *skills*
    */
    .skills_section {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        column-gap: 2rem;
    }
}

@media screen and (min-width:992px) {
    .section_center {
        width: 95vw;
    }

    /* 
    *hero*
    */
    .hero_section {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
    }

    .hero_img {
        display: block;
        position: relative;
    }

    .hero_img img {
        max-width: 25rem;
        max-height: 30rem;
        object-fit: cover;
        border-radius: var(--b-radius);
        position: relative;
    }

    .hero_img::before,
    .about_img::before {
        content: " ";
        position: absolute;
        width: 100%;
        height: 100%;
        border: 0.3rem solid var(--clr-primary-2);
        border-radius: var(--b-radius);
        top: 2rem;
        right: -2rem;
    }

    /* 
    *about*
    */
    .about_section {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
    }

    .about_img {
        position: relative;
    }

    .about_ {
        align-self: center;
    }

    /* 
    *services*
    */
    .services_section {
        grid-template-columns: repeat(3, 1fr);
    }

    /* 
    *projcets*
    */
    .projects_section {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media screen and (min-width:1170px) {

    /* 
    *projects*
    */
    .projects_section {
        grid-template-rows: repeat(2, 13rem);
        gap: 1rem;
        grid-template-areas:
            "a b b"
            "a c d"
        ;
    }

    .project,
    .img_project {
        height: 100%;
    }

    .project_1 {
        grid-area: a;
    }

    .project_2 {
        grid-area: b;
    }

    .project_3 {
        grid-area: c;
    }

    .project_4 {
        grid-area: d;
    }
}