/* ==================== VARIABLES ==================== */
:root {
    /* Colors */
    --hue-color: 210;
    /* Blue hue */
    --first-color: hsl(var(--hue-color), 60%, 35%);
    --first-color-alt: hsl(var(--hue-color), 60%, 25%);
    --first-color-light: hsl(var(--hue-color), 60%, 85%);
    --second-color: hsl(180, 70%, 45%);
    /* Cyan/Turquoise */
    --title-color: hsl(var(--hue-color), 15%, 15%);
    --text-color: hsl(var(--hue-color), 8%, 45%);
    --text-color-light: hsl(var(--hue-color), 8%, 65%);
    --body-color: hsl(var(--hue-color), 60%, 98%);
    --container-color: #FFF;
    --white-color: #FFF;

    /* Fonts */
    --body-font: 'Inter', sans-serif;
    --h1-font-size: 2.25rem;
    --h2-font-size: 1.5rem;
    --h3-font-size: 1.25rem;
    --normal-font-size: 1rem;
    --small-font-size: 0.875rem;

    /* Spacing */
    --header-height: 4.5rem;
    --mb-0-5: 0.5rem;
    --mb-1: 1rem;
    --mb-1-5: 1.5rem;
    --mb-2: 2rem;
    --mb-3: 3rem;

    /* Z-index */
    --z-fixed: 100;
}

/* Responsive Typography */
@media screen and (min-width: 968px) {
    :root {
        --h1-font-size: 3.5rem;
        --h2-font-size: 2rem;
        --h3-font-size: 1.5rem;
        --normal-font-size: 1.125rem;
        --small-font-size: 1rem;
    }
}

/* ==================== BASE ==================== */
* {
    box-sizing: border-box;
    padding: 0;
    margin: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--body-font);
    font-size: var(--normal-font-size);
    background-color: var(--body-color);
    color: var(--text-color);
    line-height: 1.6;
}

h1,
h2,
h3,
h4 {
    color: var(--title-color);
    font-weight: 700;
    line-height: 1.2;
}

ul {
    list-style: none;
}

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

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

/* ==================== REUSABLE CSS CLASSES ==================== */
.container {
    max-width: 1140px;
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--mb-1-5);
    padding-right: var(--mb-1-5);
}

.section {
    padding: 4rem 0 2rem;
}

.section__header {
    text-align: center;
    margin-bottom: var(--mb-3);
}

.section__title {
    font-size: var(--h2-font-size);
    margin-bottom: var(--mb-0-5);
    position: relative;
    display: inline-block;
}

.section__title::after {
    content: '';
    position: absolute;
    width: 40%;
    height: 3px;
    background-color: var(--second-color);
    bottom: -8px;
    left: 30%;
    border-radius: 2px;
}

.section__title--left {
    text-align: left;
}

.section__title--left::after {
    left: 0;
}

.section__subtitle {
    display: block;
    font-size: var(--small-font-size);
    color: var(--text-color-light);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: 0.5rem;
    font-weight: 600;
    transition: 0.3s;
    cursor: pointer;
    border: none;
}

.btn--primary {
    background-color: var(--first-color);
    color: var(--white-color);
}

.btn--primary:hover {
    background-color: var(--first-color-alt);
    transform: translateY(-3px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.btn--secondary {
    background-color: transparent;
    border: 2px solid var(--first-color);
    color: var(--first-color);
    margin-left: var(--mb-1);
}

.btn--secondary:hover {
    background-color: var(--first-color);
    color: var(--white-color);
}

.btn--white {
    background-color: var(--white-color);
    color: var(--first-color);
}

.btn--white:hover {
    background-color: var(--first-color-light);
}

.btn--block {
    display: block;
    width: 100%;
}

.text-gradient {
    background: linear-gradient(to right, var(--first-color), var(--second-color));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

/* ==================== HEADER ==================== */
.header {
    width: 100%;
    position: fixed;
    top: 0;
    left: 0;
    z-index: var(--z-fixed);
    background-color: var(--body-color);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.05);
    transition: .3s;
}

.scroll-header {
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.1);
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
}

.header__container {
    height: var(--header-height);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--title-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo__highlight {
    color: var(--second-color);
}

.logo__icon {
    color: var(--second-color);
    font-size: 1.5rem;
}

.nav__list {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav__link {
    font-weight: 500;
    color: var(--title-color);
    transition: .3s;
}

.nav__link:hover {
    color: var(--first-color);
}

.active-link {
    color: var(--first-color);
    font-weight: 600;
}

.nav__link--btn {
    padding: 0.5rem 1.25rem;
    background-color: var(--first-color);
    color: var(--white-color);
    border-radius: 0.25rem;
}

.nav__link--btn:hover {
    color: var(--white-color);
    background-color: var(--first-color-alt);
}

.nav__toggle,
.nav__close {
    display: none;
    font-size: 1.5rem;
    color: var(--title-color);
    cursor: pointer;
}

/* ==================== HERO ==================== */
.hero {
    position: relative;
    padding-top: calc(var(--header-height) + 2rem);
    padding-bottom: 4rem;
    overflow: hidden;
}

.hero__container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: center;
}

.hero__title {
    margin-bottom: var(--mb-1);
}

.hero__description {
    margin-bottom: var(--mb-2);
    font-size: var(--normal-font-size);
}

.hero__image-placeholder {
    width: 100%;
    height: 400px;
    background: linear-gradient(135deg, var(--first-color-light), var(--white-color));
    border-radius: 1rem;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 5rem;
    color: var(--first-color);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.05);
}

/* ==================== SERVICES ==================== */
.services__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.service-card {
    background-color: var(--container-color);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
    transition: .3s;
    border-top: 4px solid transparent;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    border-top: 4px solid var(--second-color);
}

.service-card__icon {
    font-size: 2.5rem;
    color: var(--first-color);
    margin-bottom: var(--mb-1);
}

.service-card__title {
    font-size: var(--h3-font-size);
    margin-bottom: var(--mb-1);
}

.service-card__description {
    font-size: var(--small-font-size);
    margin-bottom: var(--mb-1-5);
}

.service-card__list li {
    display: flex;
    align-items: center;
    margin-bottom: 0.5rem;
    font-size: var(--small-font-size);
}

.service-card__list li i {
    color: var(--second-color);
    margin-right: 0.5rem;
}

/* ==================== ABOUT ==================== */
.about__container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.about__image-placeholder {
    width: 100%;
    height: 350px;
    background-color: var(--first-color);
    border-radius: 1rem;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 4rem;
    color: var(--white-color);
}

.about__description {
    margin-bottom: var(--mb-2);
}

.about__stats {
    display: flex;
    gap: 2rem;
}

.stat__item {
    display: flex;
    flex-direction: column;
}

.stat__number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--first-color);
}

.stat__label {
    font-size: var(--small-font-size);
    color: var(--text-color-light);
}

/* ==================== CTA ==================== */
.cta {
    background: linear-gradient(135deg, var(--first-color), var(--first-color-alt));
    padding: 4rem 0;
    text-align: center;
    color: var(--white-color);
}

.cta__title {
    color: var(--white-color);
    margin-bottom: var(--mb-1);
}

.cta__description {
    margin-bottom: var(--mb-2);
    opacity: 0.9;
}

/* ==================== CONTACT ==================== */
.contact__container {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 3rem;
}

.contact__info {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact__card {
    background-color: var(--white-color);
    padding: 1.5rem;
    border-radius: 0.5rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    text-align: center;
}

.contact__icon {
    font-size: 1.5rem;
    color: var(--first-color);
    margin-bottom: 0.5rem;
}

.contact__card-title {
    font-size: var(--normal-font-size);
    margin-bottom: 0.25rem;
}

.contact__card-data {
    font-size: var(--small-font-size);
    color: var(--text-color-light);
}

.contact__form {
    background-color: var(--white-color);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
}

.form__group {
    margin-bottom: var(--mb-1-5);
}

.form__label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form__input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #E0E0E0;
    border-radius: 0.5rem;
    font-family: var(--body-font);
    font-size: var(--normal-font-size);
    outline: none;
    transition: .3s;
}

.form__input:focus {
    border-color: var(--first-color);
}

/* ==================== FOOTER ==================== */
.footer {
    background-color: var(--title-color);
    color: var(--white-color);
    padding: 3rem 0 1rem;
}

.footer__container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.footer__logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white-color);
}

.footer__social {
    display: flex;
    gap: 1rem;
}

.footer__social-link {
    color: var(--white-color);
    font-size: 1.25rem;
    transition: .3s;
}

.footer__social-link:hover {
    color: var(--second-color);
}

.footer__copy {
    text-align: center;
    font-size: var(--small-font-size);
    opacity: 0.7;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1rem;
}

/* ==================== MEDIA QUERIES ==================== */
@media screen and (max-width: 768px) {
    .container {
        padding-left: var(--mb-1);
        padding-right: var(--mb-1);
    }

    .nav {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        background-color: var(--body-color);
        padding: 4rem 0 3rem;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        transition: .4s;
        z-index: var(--z-fixed);
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
    }

    .show-menu {
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
    }

    .nav__list {
        flex-direction: column;
    }

    .nav__toggle,
    .nav__close {
        display: block;
    }

    .nav__close {
        position: absolute;
        top: 1rem;
        right: 1.5rem;
    }

    .hero__container,
    .about__container,
    .contact__container {
        grid-template-columns: 1fr;
    }

    .hero__image-wrapper {
        order: -1;
    }

    .about__image-wrapper {
        order: -1;
    }
}