:root {
    --bg-color: #ffffff;
    --text-color: #1a1a1a;
    --text-secondary: #57606a;
    --accent-color: #0077ff;
    --card-bg: #f6f8fa;
    --card-hover-bg: #f0f2f5;
    --border-color: #d0d7de;
    --nav-bg: #ffffff;
    --btn-text-on-accent: #ffffff;
    --shadow: rgba(0, 0, 0, 0.1);
    --font-main: "Inter", sans-serif;
    --sombra-btn: 0 5px 15px rgba(0, 119, 255, 0.4);
}

[data-theme="dark"] {
    --bg-color: #0a0e14;
    --text-color: #e6edf3;
    --text-secondary: #9da5b4;
    --accent-color: #00f2ff;
    --card-bg: #161b22;
    --card-hover-bg: #1c2128;
    --border-color: #30363d;
    --nav-bg: #0d1117;
    --btn-text-on-accent: #0a0e14;
    --shadow: rgba(0, 0, 0, 0.6);
    --sombra-btn: 0 5px 15px rgba(255, 255, 255, 0.2);
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-main);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
}

a {
    text-decoration: none;
    color: inherit;
    transition: 0.3s;
}

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

/* =========================================
   CONTAINER
   ========================================= */

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding-left: 2rem;
    padding-right: 2rem;
}

/* =========================================
   NAVBAR
   ========================================= */

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.2rem 5%;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    background: var(--nav-bg);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    transition: background 0.3s ease;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-color);
    letter-spacing: -0.5px;
}

.logo::after {
    content: ".";
    color: var(--accent-color);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.theme-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-color);
    padding: 0.5rem;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    font-size: 1.2rem;
    transition: 0.3s;
}

.theme-btn:hover {
    background: var(--bg-color);
    border-color: var(--accent-color);
    color: var(--accent-color);
}

.btn-tradutor {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;

    display: flex;
    align-items: center;
    justify-content: center;

    position: relative;

    padding: 0 0 5px;

    font-family: var(--font-main);
    font-size: 0.9rem;
    font-weight: 600;

    transition: color 0.3s ease;
}

.btn-tradutor::after {
    content: "";
    position: absolute;

    left: 0;
    bottom: 0;

    width: 0;
    height: 3px;

    background: var(--accent-color);

    transition: width 0.3s ease;
}

.btn-tradutor:hover {
    color: var(--text-color);
}

.btn-tradutor:hover::after {
    width: 100%;
}

/* =========================================
   CABEÇALHO DO PROJETO
   ========================================= */

.project-header {
    padding-top: 130px;
    padding-bottom: 4rem;
    background: var(--bg-color);
}

.back-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    margin-bottom: 2.5rem;
    padding: 0.7rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 700;
}

.back-button svg {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
    display: block;
}

.back-button:hover {
    color: var(--btn-text-on-accent);
    background: var(--accent-color);
    border-color: var(--accent-color);
    transform: translateX(-3px);
}

.project-header h1 {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    line-height: 1.05;
    margin-bottom: 1rem;
    color: var(--text-color);
    max-width: 1000px;
}

.project-header h1::after {
    content: "";
    display: block;
    width: 100%;
    max-width: 180px;
    height: 4px;
    background: var(--accent-color);
    margin-top: 1.2rem;
}

.project-subtitle {
    color: var(--text-secondary);
    font-size: 1.15rem;
    max-width: 800px;
}

/* =========================================
   CONTEÚDO
   ========================================= */

.project-content {
    padding-bottom: 5rem;
}

.content-section {
    margin-bottom: 4rem;
}

.content-section h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    padding-bottom: 0.7rem;
    position: relative;
    color: var(--text-color);
}

.content-section h2::after {
    content: "";
    display: block;
    width: 100%;
    height: 3px;
    background: var(--accent-color);
    position: absolute;
    bottom: 0;
    left: 0;
}

.content-section p {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 1.2rem;
    max-width: 900px;
}

.content-section p:last-child {
    margin-bottom: 0;
}

/* =========================================
   IMAGENS
   ========================================= */

.project-image {
    margin: 2rem 0;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 10px 25px var(--shadow);
}

.project-image img {
    width: 100%;
    max-height: 650px;
    object-fit: cover;
}

.project-image figcaption {
    padding: 0.9rem 1.2rem;
    color: var(--text-secondary);
    font-size: 0.85rem;
    border-top: 1px solid var(--border-color);
}

.image-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.image-grid .project-image {
    margin: 0;
}

.image-grid .project-image img {
    aspect-ratio: 16 / 10;
    max-height: none;
    object-fit: cover;
}

/* =========================================
   TABELA
   ========================================= */

.table-wrapper {
    width: 100%;
    overflow-x: auto;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--card-bg);
    box-shadow: 0 10px 25px var(--shadow);
}

table {
    width: 100%;
    min-width: 600px;
    border-collapse: collapse;
    color: var(--text-color);
}

thead {
    background: var(--card-hover-bg);
}

th,
td {
    padding: 1rem 1.2rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    font-weight: 700;
    color: var(--text-color);
}

td {
    color: var(--text-secondary);
}

tbody tr:last-child td {
    border-bottom: none;
}

tbody tr {
    transition: background 0.2s ease;
}

tbody tr:hover {
    background: var(--card-hover-bg);
}

/* =========================================
   BOTÕES
   ========================================= */

.content-actions {
    margin-top: 2rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;

    background: var(--accent-color);
    color: var(--btn-text-on-accent);

    padding: 0.8rem 2rem;
    border-radius: 4px;
    font-weight: 700;

    border: 2px solid var(--accent-color);

    transition: transform 0.2s, box-shadow 0.2s;
}

.btn svg {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
    display: block;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--sombra-btn);
}

/* =========================================
   FOOTER
   ========================================= */

footer {
    text-align: center;
    padding: 2rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
    background: var(--bg-color);
    border-top: 1px solid var(--border-color);
}

/* =========================================
   ACESSIBILIDADE
   ========================================= */

:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 3px;
}

/* =========================================
   RESPONSIVIDADE
   ========================================= */

@media (max-width: 900px) {
    .project-header {
        padding-top: 120px;
    }

    .image-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 700px) {
    .container {
        padding-left: 1.2rem;
        padding-right: 1.2rem;
    }

    .navbar {
        padding: 1rem 5%;
    }

    .project-header {
        padding-top: 110px;
        padding-bottom: 3rem;
    }

    .project-header h1 {
        font-size: 2.5rem;
    }

    .project-subtitle {
        font-size: 1rem;
    }

    .content-section {
        margin-bottom: 3rem;
    }

    .content-section h2 {
        font-size: 1.7rem;
    }

    .image-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .project-image {
        margin: 1.5rem 0;
    }

    .back-button,
    .btn {
        width: 100%;
        justify-content: center;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .project-header h1 {
        font-size: 2.1rem;
    }

    .content-section h2 {
        font-size: 1.5rem;
    }

    th,
    td {
        padding: 0.8rem;
    }
}

/* Respeita usuários que preferem menos animação */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
    }
}