/* 
----------------------------
Header section
----------------------------
*/
.header {
	display: flex;
	justify-content: space-between;
	align-items: center;

	/* for mobile nav bar */
	position: relative;

	background-color: var(--primary-1);
	height: var(--header-height);
	padding: 0 4.8rem;
}

.logo {
	display: block;
	height: 2.4rem;
}

.main-nav-list {
	display: flex;
	align-items: center;
	gap: 4.8rem;

	list-style: none;
}

.main-nav-link:link,
.main-nav-link:visited {
	text-decoration: none;
	color: var(--grey-4);
	font-weight: 500;
	font-size: 1.8rem;

	transition: var(--transition);
}
.main-nav-link:hover,
.main-nav-link:active {
	color: var(--primary-4);
}

/* two classes with and without a blank space is different.
With: descendant class
Without: apply to emelemts that have these two classes together */
.main-nav-link.nav-cta:link,
.main-nav-link.nav-cta:visited {
	padding: 1.2rem 2.4rem;
	border-radius: var(--radius);
	background-color: var(--primary-3);
	color: var(--white);
}
.main-nav-link.nav-cta:hover,
.main-nav-link.nav-cta:active {
	background-color: var(--primary-4);
}

/* Mobile toggle nav button */
.btn-mobile-nav {
	border: none;
	background: none;
	cursor: pointer;

	display: none;
}

.icon-mobile-nav {
	height: 4.8rem;
	width: 4.8rem;
	color: var(--grey-3);
}

.icon-mobile-nav[name='close-outline'] {
	display: none;
}

/* STICKY NAVIGATION */
.sticky .header {
	position: fixed;
	top: 0;

	width: 100%;
	height: 8rem;
	padding-top: 0;
	padding-bottom: 0;
	background-color: rgba(255, 255, 255, 0.97);
	z-index: 9999;
	box-shadow: var(--shadow);
}

.sticky .section-hero {
	margin-top: 8rem;
}

/* 
----------------------------
Hero section
----------------------------
*/
.section-hero {
	display: flex;
	align-items: center;

	height: calc(100vh - var(--header-height));
	background-color: var(--primary-1);
	padding: 4.8rem 0 9.6rem 0;
}

.hero {
	display: grid;
	grid-template-columns: 1fr 1fr;
	align-items: center;
	gap: 9.6rem;

	max-width: 130rem;
	margin: 0 auto;
	padding: 0 3.2rem;
}

.hero-description {
	font-size: 2rem;
	line-height: 1.5;
	margin-bottom: 4.8rem;
}

.hero-img {
	/* make sure the image contains 100% of hero-img-box, which is a grid column of hero, so it only take 50% of the content area */
	width: 100%;
}

.delivered-meals {
	display: flex;
	align-items: center;
	gap: 1.6rem;

	margin-top: 8rem;
}

.delivered-imgs {
	display: flex;
}

.delivered-imgs img {
	height: 3.6rem;
	width: 3.6rem;
	border-radius: 50%;
	border: 2px solid var(--primary-1);

	margin-right: -1.2rem;
}
.delivered-imgs img:last-child {
	margin-right: 0;
}

.delivered-text {
	font-size: 1.6rem;
	font-weight: 600;
}
.delivered-text span {
	color: var(--primary-4);
	font-weight: 700;
}

/* 
----------------------------
Featured in section
----------------------------
*/
.section-featured-in {
	padding: 4.8rem 0 3.2rem 0;
}

.heading-featured-in {
	font-size: 1.4rem;
	text-transform: uppercase;
	letter-spacing: 0.75px;
	font-weight: 500;
	text-align: center;
	margin-bottom: 2.4rem;
	color: var(--grey-4);
}

.featured-in-logos {
	display: flex;
	justify-content: space-around;
}

.featured-in-logos img {
	height: 3.2rem;
	filter: brightness(0);
	opacity: 50%;
}

/* 
----------------------------
How it works section
----------------------------
*/
.section-how {
	padding: 9.6rem 0;
}

.step-number {
	font-size: 8.6rem;
	font-weight: 600;
	color: var(--grey-2);
	margin-bottom: 1.2rem;
}

.step-description {
	font-size: 1.8rem;
	line-height: 1.8;
}

.step-img-box {
	display: flex;
	align-items: center;
	justify-content: center;

	position: relative;
}
.step-img {
	width: 35%;
}

.step-img-box::before {
	content: '';
	display: block;
	width: 60%;
	/* cannot define height, since it is a text content */
	padding-bottom: 60%;

	background-color: var(--primary-2);
	border-radius: 50%;
	/* need responsive */
	box-shadow: inset 0 0 0 30px var(--primary-1);

	position: absolute;
	top: 50%;
	left: 50%;
	transform: translate(-50%, -50%);

	z-index: -1;
}

/* 
----------------------------
Meals section
----------------------------
*/
.section-meals {
	padding: 9.6rem 0;
}

.meal {
	box-shadow: var(--shadow);
	border-radius: var(--radius);
	/* when content is outside of the container, how should it present? In this case, the image's top square corner will be hidden */
	overflow: hidden;

	transition: var(--transition-long);
}

.meal:hover {
	box-shadow: 0 2.4rem 4.8rem 2rem rgba(0, 0, 0, 0.07);
	transform: translate(0, -1.5rem);
}

.meal-img {
	width: 100%;
}

.meal-text {
	padding: 2.4rem 3.6rem 4.2rem 3.6rem;
}

.meal-tags {
	display: flex;
	gap: 0.4rem;

	margin-bottom: 1.2rem;
}

.tag {
	display: inline-block;
	padding: 0.6rem 1.2rem;
	font-size: 1.2rem;
	text-transform: uppercase;
	color: var(--grey-3);
	border-radius: 100px;
	font-weight: 600;
}
.tag--vegetarian {
	background-color: #22c55e;
}
.tag--vegan {
	background-color: #a3e635;
}
.tag--paleo {
	background-color: #facc15;
}

.meal-title {
	font-size: 2.4rem;
	color: var(--grey-4);
	font-weight: 600;
	margin-bottom: 3.2rem;
}

.meal-attributes {
	list-style: none;
	display: flex;
	flex-direction: column;
	gap: 2rem;
}
.meal-attribute {
	display: flex;
	align-items: center;
	gap: 1.6rem;

	font-size: 1.8rem;
}

.meal-icon {
	height: 2.4rem;
	width: 2.4rem;
	color: var(--primary-4);
}

.all-recipes {
	text-align: center;
	/* why put the font-size here but not in the link class?
    Because we may use link class somewhere else, and the font-size there could be different */
	font-size: 1.8rem;
}

/* 
----------------------------
Testimonials section
----------------------------
*/
.section-testimonials {
	display: grid;
	grid-template-columns: 55fr 45fr;

	background-color: var(--primary-1);
	padding: 1rem;
}

.testimonials-container {
	padding: 0 10rem;
}

.testimonials {
	display: grid;
	grid-template-columns: repeat(2, 1fr);
	gap: 4.8rem;
}

.testimonial-img {
	width: 7rem;
	height: 7rem;
	border-radius: 50%;
	margin-bottom: 1.6rem;
}

.testimonial-text {
	color: var(--grey-4);
	font-size: 1.8rem;
	line-height: 1.8;
	margin-bottom: 1.2rem;
}

.testimonial-name {
	font-size: 1.6rem;
	color: var(--grey-3);
}

.gallery {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 1rem;
}

.gallery-item {
	overflow: hidden;
}

.gallery-item img {
	width: 100%;

	transition: var(--transition-long);
}

.gallery-item img:hover {
	transform: scale(1.2);
}

/* 
----------------------------
Pricing section
----------------------------
*/
.section-pricing {
	padding: 9.6rem 0;
}

.pricing-plan {
	background-color: var(--primary-1);
	border-radius: var(--radius);
	padding: 4.8rem;
	width: 78%;

	border: 2px solid var(--primary-1);
}
.pricing-plan--starter {
	justify-self: end;
	background-color: var(--white);
}

.plan-header {
	text-align: center;
	margin-bottom: 4.8rem;
}

.plan-name {
	color: var(--primary-4);
	font-weight: 600;
	font-size: 2rem;
	text-transform: uppercase;
	letter-spacing: 0.75;
	margin-bottom: 3.2rem;
}

.plan-price {
	font-size: 6.2rem;
	font-weight: 600;
	color: var(--grey-4);
	margin-bottom: 3.2rem;
}
.plan-price span {
	font-size: 3rem;
	font-weight: 500;
	margin-right: 0.8rem;
}

.plan-text {
	font-size: 1.6rem;
	line-height: 1.6;
}

.plan-signup {
	text-align: center;
	margin-top: 4.8rem;
}

.pricing-plan--complete {
	position: relative;

	overflow: hidden;
}
.pricing-plan--complete::after {
	content: 'best value';
	text-transform: uppercase;

	position: absolute;
	top: 5%;
	right: -10%;

	font-size: 1.4rem;
	font-weight: 700;
	color: var(--grey-4);
	background-color: #facc15;
	padding: 1rem 4rem;

	transform: rotate(45deg);
}

.plan-support {
	font-size: 1.6rem;
	line-height: 1.8;
}

.feature-icon {
	color: var(--primary-3);
	height: 3rem;
	width: 3rem;
	background-color: var(--primary-1);
	margin-bottom: 3.2rem;
	padding: 1.6rem;
	border-radius: 50%;
}

.feature-title {
	font-size: 2.4rem;
	font-weight: 700;
	color: var(--grey-4);
	margin-bottom: 1.6rem;
}

.feature-text {
	font-size: 1.6rem;
	line-height: 1.8;
}

/* 
----------------------------
CTA section
----------------------------
*/
.section-cta {
	padding: 9.6rem 0;
}

.cta {
	display: grid;
	grid-template-columns: 2fr 1fr;

	box-shadow: var(--shadow);
	border-radius: var(--radius);
	background-image: var(--background-image);

	overflow: hidden;
}

.cta-img-box {
	background-image: linear-gradient(to right bottom, rgba(233, 139, 56, 0.35), rgba(230, 125, 34, 0.35)), url(../img/eating.jpg);
	/* use the image to cover the whole element */
	background-size: cover;
	background-position: center;
}

.cta-input-box {
	padding: 4.8rem 6.4rem 6.4rem 6.4rem;
	color: #2e1907;
}

.cta-input-box .heading-secondary {
	color: inherit;
	margin-bottom: 3.2rem;
}

.cta-text {
	font-size: 1.6rem;
	line-height: 1.6;
	margin-bottom: 4.8rem;
}

.cta-form {
	display: grid;
	grid-template-columns: 1fr 1fr;
	column-gap: 3.2rem;
	row-gap: 2.4rem;
}

.cta-form label {
	display: block;
	font-size: 1.6rem;
	font-weight: 500;
	margin-bottom: 1.2rem;
}

.cta-form input,
.cta-form select {
	width: 100%;
	padding: 1.2rem;
	font-size: 1.8rem;
	color: inherit;
	font-family: inherit;
	border: none;
	background-color: var(--primary-1);
	border-radius: var(--radius);
	box-shadow: var(--shadow);
}
.cta-form input::placeholder {
	color: #bbb;
}

.btn--form {
	background-color: #2e1907;
	color: var(--primary-1);
	align-self: end;
	/* override the padding in .btn style */
	padding: 1.2rem;
}
.btn--form:hover {
	background-color: var(--primary-1);
	color: #2e1907;
}

.cta *:focus {
	outline: none;
	box-shadow: 0 0 0 5px rgba(255, 247, 237, 0.5);
}

/* 
----------------------------
Footer
----------------------------
*/
.footer {
	padding: 12.8rem 0;
	border-top: 1px solid #eee;
}

.grid--footer {
	grid-template-columns: 1.5fr 1.5fr 1fr 1fr 1fr;
}

.footer-heading {
	color: var(--grey-4);
	font-size: 1.8rem;
	font-weight: 500;
	margin-bottom: 4rem;
}

.logo-col,
.addr-col {
	display: flex;
	flex-direction: column;
}

.footer-nav {
	list-style: none;
	display: flex;
	flex-direction: column;
	gap: 2.4rem;
}

.logo-footer {
	margin-bottom: 3.4rem;
}

.social-links {
	list-style: none;
	display: flex;
	gap: 1.8rem;
}

.copyright {
	font-size: 1.4rem;
	line-height: 1.4;
	color: var(--grey-3);
	/* automatically push the copyright to the end of column */
	margin-top: auto;
}

.contacts {
	/* address's font-style is italic by default */
	font-style: normal;
	font-size: 1.6rem;
	line-height: 1.6;
	margin-top: auto;
}

.tel-email {
	margin-top: 1.2rem;
}

.social-links a:link,
.social-links a:visited,
.contacts a:link,
.contacts a:visited,
.footer-nav a:link,
.footer-nav a:visited {
	text-decoration: none;
	font-size: 2.4rem;
	color: var(--grey-3);
	transition: var(--transition);
}
.social-links a:hover,
.social-links a:active,
.contacts a:hover,
.contacts a:active,
.footer-nav a:hover,
.footer-nav a:active {
	color: var(--grey-4);
	text-shadow: 0 2px 2px rgba(0, 0, 0, 0.07);
}

.contacts a:link,
.contacts a:visited,
.footer-nav a:link,
.footer-nav a:visited {
	font-size: 1.6rem;
}