:root {
    --background-color: #ffffff;
    --light-gray: #F8F8F8;
    --gray-font: #666666;
    --lighter-font: #999999;
    --pink-font: #FFB3D1;
    --primary: #FF6B9D;
    --secondary: #FFF0F5;
    --contrast: #2D1920;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 90px;
}

body {
    letter-spacing: 0.05em;
    background-color: var(--background-color);
}

h1 {
    font-family: "Fraunces", serif;
    font-size: 80px;
}

h2 {
    font-family: "Fraunces", serif;
    font-size: 32px;
}

h3 {
    font-family: "Fraunces", serif;
}

h4 {
    font-family: "Nunito", sans-serif;
    color: var(--primary);
    font-weight: 500;
    font-size: 16px;
}

p {
    font-family: "Nunito", sans-serif;
    color: var(--gray-font);
}

ul {
    font-family: "Nunito", sans-serif;
}

span {
    font-family: "Nunito", sans-serif;
}

.highlight {
    color: var(--primary);
}

.back-wrapper {
    padding: 40px 80px 0;
    max-width: 960px;
    margin: 0 auto;
    width: 100%;
}

.back-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
    text-decoration: none;
    font-family: "Nunito", sans-serif;
    font-weight: 600;
    transition: opacity 0.2s ease;
}

.back-btn:hover {
    opacity: 0.7;
}

.project-hero {
    padding: 40px 80px;
    max-width: 960px;
    margin: 0 auto;
    width: 100%;
}

.hero-img {
    width: 100%;
    max-height: 500px;
    object-fit: cover;
    border-radius: 20px;
    object-position: top;
}

.project-intro,
.project-section {
    padding: 20px 80px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    max-width: 960px;
    margin: 0 auto;
    width: 100%;
}

.project-meta {
    display: flex;
    flex-direction: column;
    gap: 8px;
    border-left: 2px solid var(--primary);
    padding-left: 20px;
}

.meta-item {
    display: flex;
    gap: 10px;
}

.meta-label {
    font-family: "Nunito", sans-serif;
    font-weight: 700;
    color: var(--contrast);
    min-width: 110px;
}

.meta-value {
    font-family: "Nunito", sans-serif;
    color: var(--gray-font);
}

.problem-solution {
    display: flex;
    gap: 30px;
}

.ps-block {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 10px;
    background-color: var(--light-gray);
    border-radius: 16px;
    padding: 24px;
}

.ps-block h3 {
    color: var(--primary);
}

.section-number {
    color: var(--primary);
    font-family: "Nunito", sans-serif;
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 0.1em;
}

.project-list {
    padding-left: 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    color: var(--gray-font);
}

.project-list li::marker {
    color: var(--primary);
}

.img-placeholder img {
    width: 100%;
    border-radius: 16px;
    object-fit: cover;
}

.img-label {
    font-family: "Nunito", sans-serif;
    font-size: 13px;
    color: var(--lighter-font);
    padding-top: 10px;
}

@media (max-width: 768px) {
    .back-wrapper,
    .project-hero,
    .project-intro,
    .project-section {
        padding: 24px;
    }

    .project-intro h1 {
        font-size: 2rem;
    }

    .problem-solution {
        flex-direction: column;
    }

    .meta-item {
        flex-direction: column;
        gap: 2px;
    }
}

.cta-btn {
    background-color: var(--primary);
    color: #ffffff;
    border: 1.5px solid var(--primary);
    border-radius: 20px;
    padding: 24px 44px;
    cursor: pointer;
    font-weight: 500;
    letter-spacing: 0.05em;
    transition: all 0.3s ease;
    max-width: 250px;
    font-family: "Nunito", sans-serif;
    display: block;
    margin: 40px auto 80px;
    text-align: center;
}

.cta-btn:hover {
    background-color: #ffffff;
    color: var(--primary);
    border-color: var(--primary);
}

@media (max-width: 768px) {
    .cta-btn {
        width: 100%;
        max-width: none;
        padding: 18px 30px;
    }
}