/* ================================================
   DESIGN SYSTEM — CSS VARIABLES
   ================================================ */
:root {
    --primary:      #cb2937;
    --secondary:    #ee7900;
    --dark:         #080808;
    --dark-light:   #272727;
    --light:        #dedede;
    --white:        #ffffff;
    --text-muted:   #bfbfbf;

    --space-xs:  8px;
    --space-sm:  16px;
    --space-md:  24px;
    --space-lg:  40px;
    --space-xl:  80px;

    --max-width: 1200px;
    --radius:    10px;
    --transition: 0.4s ease;
}


/* ================================================
   RESET & BASE
   ================================================ */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Montserrat', sans-serif;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--dark);
    color: var(--light);
    line-height: 1.6;
}

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

h1, h2, h3 {
    line-height: 1.2;
    letter-spacing: -0.5px;
}

p {
    color: var(--text-muted);
    font-size: 16px;
}

a {
    text-decoration: none;
}


/* ================================================
   UTILITY CLASSES
   ================================================ */

/* Backgrounds */
.bg-dark       { background-color: var(--dark); }
.bg-dark-light { background-color: var(--dark-light); }
.bg-prim       { background-color: var(--primary); }
.bg-sec        { background-color: var(--secondary); }
.bg-light      { background-color: var(--light); }

/* Foregrounds */
.fg-dark  { color: var(--dark); }
.fg-white { color: var(--white); }
.fg-light { color: var(--light); }
.fg-prim  { color: var(--primary); }
.fg-sec   { color: var(--secondary); }


/* ================================================
   LAYOUT
   ================================================ */
.container {
    max-width: var(--max-width);
    margin: auto;
    padding: 20px 8%;
}

.row {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
}

section,
#about,
#services,
#portfolio,
#contact {
    padding: var(--space-xl) 0;
}


/* ================================================
   TYPOGRAPHY
   ================================================ */
.sub-title {
    font-size: clamp(30px, 4vw, 60px);
    font-weight: 600;
    color: var(--white);
    text-align: center;
    margin-bottom: var(--space-lg);
}


/* ================================================
   NAV LINKS
   ================================================ */
.nav-a {
    color: var(--white);
    font-size: 18px;
    position: relative;
}

.nav-a::after {
    content: "";
    width: 0;
    height: 3px;
    background: var(--primary);
    position: absolute;
    left: 0;
    bottom: -6px;
    transition: width var(--transition);
}

.nav-a:hover::after {
    width: 100%;
}


/* ================================================
   HEADER
   ================================================ */
#header {
    width: 100%;
    min-height: 100vh;
    background-image: url('img/idris/bg-header.jpg');
    background-size: cover;
    background-position: center;
}

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

.logo {
    width: 80px;
}

nav ul {
    list-style: none;
}

nav ul li {
    display: inline-block;
    margin: 10px 20px;
}

.header-text {
    margin-top: 15%;
    font-size: clamp(18px, 2.5vw, 30px);
}

.header-text h1 {
    font-size: clamp(32px, 5vw, 60px);
    margin-top: 20px;
}

/* Mobile menu toggle — hidden on desktop */
.menu-icon {
    display: none;
    font-size: 25px;
    cursor: pointer;
}


/* ================================================
   ABOUT
   ================================================ */
.about-col-1 { flex-basis: 35%; }
.about-col-2 { flex-basis: 60%; }

.about-col-1 img {
    width: 100%;
    border-radius: 15px;
}

/* Tabs */
.tab-titles {
    display: flex;
    margin: 20px 0 40px;
}

.tab-links {
    margin-right: 50px;
    font-size: 18px;
    font-weight: 500;
    cursor: pointer;
    position: relative;
    color: var(--light);
}

.tab-links::after {
    content: "";
    width: 0;
    height: 3px;
    background: var(--primary);
    position: absolute;
    left: 0;
    bottom: -8px;
    transition: width var(--transition);
}

.tab-links.active-link::after {
    width: 50%;
}

.tab-content {
    display: none;
}

.tab-content.active-tab {
    display: block;
}

.tab-content ul li {
    list-style: none;
    margin: 10px 0;
}

.tab-content ul li span {
    font-size: 14px;
}


/* ================================================
   SERVICES
   ================================================ */
.services-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-top: 50px;
}

.services-list div {
    background-color: var(--dark-light);
    padding: 40px;
    font-size: 13px;
    font-weight: 300;
    border-radius: var(--radius);
    transition: background var(--transition), transform var(--transition);
}

.services-list div .icons {
    font-size: 50px;
    margin-bottom: 30px;
    color: var(--primary);
}

.services-list div h2 {
    font-weight: 500;
    font-size: 30px;
    margin-bottom: 15px;
    color: var(--white);
}

.services-list div p {
    color: var(--text-muted);
}

.services-list div a {
    font-size: 12px;
    margin-top: 20px;
    color: var(--primary);
    display: inline-block;
}

.services-list div:hover {
    background-color: var(--primary);
    transform: translateY(-10px);
    color: var(--white);
}

.services-list div:hover p {
    color: var(--white);
}

.services-list div:hover a,
.services-list div:hover .icons {
    color: var(--white);
}


/* ================================================
   PORTFOLIO
   ================================================ */
.work-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-top: 50px;
}

.work {
    position: relative;
    border-radius: var(--radius);
    overflow: hidden;
}

.work img {
    width: 100%;
    border-radius: var(--radius);
    transition: transform var(--transition);
}

.work:hover img {
    transform: scale(1.1);
}

.layer {
    width: 100%;
    height: 0;
    background: linear-gradient(rgba(0, 0, 0, 0.6), var(--primary));
    border-radius: var(--radius);
    position: absolute;
    left: 0;
    bottom: 0;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    padding: 0 40px;
    text-align: center;
    font-size: 14px;
    transition: height var(--transition);
}

.layer h3 {
    font-weight: 500;
    margin-bottom: 20px;
    color: var(--white);
}

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

.layer a {
    margin-top: 20px;
    color: var(--primary);
    font-size: 18px;
    line-height: 60px;
    background: var(--white);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    text-align: center;
}

.work:hover .layer {
    height: 100%;
}

/* Shared button */
.btn {
    display: block;
    margin: 50px auto;
    width: fit-content;
    border: 1px solid var(--primary);
    padding: 14px 50px;
    border-radius: 6px;
    color: var(--white);
    transition: background var(--transition);
}

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

.btn.btn2 {
    display: inline-block;
    background: var(--primary);
}


/* ================================================
   CONTACT
   ================================================ */
.contact-left  { flex-basis: 35%; }
.contact-right { flex-basis: 60%; }

.contact-left p {
    margin-top: 30px;
}

.con-icons {
    color: var(--primary);
    margin-right: 15px;
    font-size: 25px;
}

.social-icons {
    margin-top: 30px;
}

.social-icons a {
    font-size: 30px;
    margin-right: 15px;
    display: inline-block;
    color: var(--light);
    transition: color var(--transition), transform var(--transition);
}

.social-icons a:hover {
    color: var(--primary);
    transform: translateY(-5px);
}

.contact-right form {
    width: 100%;
}

form input,
form textarea {
    width: 100%;
    border: 0;
    outline: none;
    background: var(--dark-light);
    padding: 15px;
    margin: 15px 0;
    color: var(--white);
    font-size: 18px;
    border-radius: 6px;
    transition: background var(--transition);
}

form input:focus,
form textarea:focus {
    background: #333333;
}

form .btn2 {
    padding: 14px 60px;
    font-size: 18px;
    margin-top: 20px;
    cursor: pointer;
    border: none;
}

#msg {
    color: #61b752;
    margin-top: -30px;
    display: block;
    font-size: 14px;
}

/* Footer */
.copy {
    width: 100%;
    text-align: center;
    padding: 25px 0;
    background: var(--dark-light);
    margin-top: 20px;
    font-weight: 300;
}

.lg-down {
    max-height: 15px;
    display: inline;
}


/* ================================================
   TABLET  (max-width: 1024px)
   ================================================ */
@media only screen and (max-width: 1024px) {

    .container {
        padding: 20px 5%;
    }

    .row {
        flex-direction: column;
    }

    .about-col-1,
    .about-col-2 {
        flex-basis: 100%;
    }

    .about-col-1 {
        margin-bottom: 30px;
    }

    .header-text {
        margin-top: 25%;
        text-align: center;
    }

    nav ul li {
        margin: 10px;
    }

    .services-list,
    .work-list {
        grid-template-columns: repeat(2, 1fr);
    }
}


/* ================================================
   MOBILE  (max-width: 768px)
   ================================================ */
@media only screen and (max-width: 768px) {

    .logo {
        width: 50px;
    }

    #header {
        min-height: 100vh;
        background-image: url('img/idris/portrait.jpg');
    }

    .header-text {
        margin-top: 80%;
        font-size: 16px;
        text-align: center;
    }

    .header-text h1 {
        font-size: 28px;
    }

    /* Show hamburger */
    .menu-icon {
        display: block;
    }

    /* Slide-in sidebar */
    nav ul {
        background: var(--primary);
        position: fixed;
        top: 0;
        right: -220px;
        width: 220px;
        height: 100vh;
        padding-top: 60px;
        z-index: 1000;
        transition: right var(--transition);
    }

    nav ul li {
        display: block;
        margin: 20px;
    }

    /* Close icon inside menu */
    nav ul .menu-icon {
        position: absolute;
        top: 20px;
        left: 20px;
    }

    .sub-title {
        font-size: 28px;
    }

    .about-col-2 {
        font-size: 14px;
        text-align: center;
    }

    .tab-titles {
        justify-content: center;
        flex-wrap: wrap;
    }

    .tab-links {
        font-size: 14px;
        margin: 10px;
    }

    .services-list,
    .work-list {
        grid-template-columns: 1fr;
    }

    .contact-left,
    .contact-right {
        flex-basis: 100%;
    }

    .btn {
        padding: 12px 30px;
        font-size: 14px;
    }

    .copy {
        font-size: 12px;
    }
}


/* ================================================
   SMALL MOBILE  (max-width: 480px)
   ================================================ */
@media only screen and (max-width: 480px) {

    .header-text {
        margin-top: 90%;
        font-size: 14px;
    }

    .header-text h1 {
        font-size: 24px;
    }

    .sub-title {
        font-size: 24px;
    }

    .services-list div {
        padding: 25px;
    }

    .layer {
        padding: 0 20px;
        font-size: 12px;
    }

    .layer h3 {
        font-size: 16px;
    }

    .btn {
        padding: 10px 25px;
        font-size: 13px;
    }
}