/* ==========================================================================
   1. Definição de Variáveis (TEMA ESCURO)
   ========================================================================== */
:root {
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-mono: 'SF Mono', 'Menlo', 'Consolas', 'Courier New', Courier, monospace;
    --color-primary: #0d6efd;
    --color-primary-hover: #3b8bfd;
    --color-success: #198754;
    --color-success-hover: #21b36b;
    --color-danger: #dc3545;
    --color-danger-hover: #e55a66;
    --color-text-primary: #e9ecef;
    --color-text-secondary: #adb5bd;
    --color-border: #495057;
    --color-background: #121212;
    --color-surface: #1e1e1e;
    --color-surface-light: #2c2c2c;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.15);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.25), 0 2px 4px -1px rgba(0, 0, 0, 0.15);
    --border-radius: 0.5rem; /* 8px */
}

/* ==========================================================================
   2. Reset e Estilos Globais
   ========================================================================== */
body {
    font-family: var(--font-sans);
    line-height: 1.6;
    background-color: var(--color-background);
    color: var(--color-text-primary);
    margin: 0;
    padding: 2rem;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

*, *::before, *::after {
    box-sizing: border-box;
}

/* ==========================================================================
   3. Layout Principal
   ========================================================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    background-color: var(--color-surface);
    padding: 2.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border);
}

header {
    text-align: center;
    margin-bottom: 0;
    border-bottom: none;
    padding-bottom: 1.5rem;
}

header h1 {
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: #fff;
}

header p {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.header-logo {
    display: block;
    margin: 0 auto 1.5rem auto;
    max-width: 80px;
    height: auto;
}

.converter-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    row-gap: 1rem;
    column-gap: 2rem;
}

.io-box h2 {
    font-size: 1.25rem;
    font-weight: 500;
    margin-top: 0;
    margin-bottom: 1rem;
    color: var(--color-text-primary);
}

footer {
    text-align: center;
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    font-size: 0.8em;
}

/* ==========================================================================
   4. Estilo dos Elementos de Formulário
   ========================================================================== */
textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    font-family: var(--font-mono);
    font-size: 0.95em;
    resize: vertical;
    transition: border-color 0.2s, box-shadow 0.2s, background-color 0.2s;
    background-color: var(--color-surface-light);
    color: var(--color-text-primary);
}

textarea::placeholder {
    color: var(--color-text-secondary);
}

textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.35);
}

textarea[readonly] {
    background-color: rgba(0,0,0,0.2);
    cursor: default;
}

button, .upload-btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    font-family: var(--font-sans);
    transition: background-color 0.2s, transform 0.1s;
    color: white;
}

button:hover, .upload-btn:hover {
    transform: translateY(-2px);
}

#convert-btn {
    background-color: var(--color-success);
}
#convert-btn:hover {
    background-color: var(--color-success-hover);
}

#clear-btn {
    background-color: var(--color-danger);
}
#clear-btn:hover {
    background-color: var(--color-danger-hover);
}

#copy-btn, .upload-btn {
    background-color: var(--color-primary);
    width: 100%; 
}
#copy-btn:hover, .upload-btn:hover {
    background-color: var(--color-primary-hover);
}

.upload-btn {
    display: block;
    text-align: center;
    margin-bottom: 1rem;
}

.output-controls {
    display: flex;
    margin-bottom: 1rem;
}

#convert-btn,
#clear-btn {
    width: 100%;
    padding-top: 1rem;
    padding-bottom: 1rem;
    font-weight: 700;
}


/* ==========================================================================
   5. Responsividade
   ========================================================================== */
@media (max-width: 768px) {
    body {
        padding: 1rem;
    }
    
    .container {
        padding: 1.5rem;
    }

    .converter-grid, .calculator-layout, .tool-cards-container {
        grid-template-columns: 1fr;
        flex-direction: column;
    }
}

/* ==========================================================================
   6. Animação de Digitação
   ========================================================================== */
.typing-container {
    display: inline-block;
}

.typing-container::after {
    content: '|';
    display: inline-block;
    animation: blink-caret 0.75s infinite;
    font-weight: 700;
    color: var(--color-text-secondary);
}

@keyframes blink-caret {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0;
    }
}

/* ==========================================================================
   7. Estilos Adicionais (Navegação, Hub, Tabelas, etc.)
   ========================================================================== */

.main-nav {
    margin-top: 1.5rem;
    margin-bottom: 2.5rem;
    display: flex;
    gap: 1rem;
    justify-content: center;
    border-bottom: 1px solid var(--color-border);
    padding-bottom: 1.5rem;
    flex-wrap: wrap;
}

.main-nav a {
    color: var(--color-text-secondary);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    transition: background-color 0.2s, color 0.2s;
    font-weight: 500;
}

.main-nav a:hover {
    color: var(--color-text-primary);
    background-color: var(--color-surface-light);
}

.main-nav a.active {
    color: var(--color-primary);
    font-weight: 700;
}

.tool-cards-container {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    justify-content: center;
    padding: 2rem 0;
}

.tool-card {
    background-color: var(--color-surface-light);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    width: 100%;
    max-width: 350px;
    text-decoration: none;
    color: var(--color-text-primary);
    transition: transform 0.2s, box-shadow 0.2s;
}

.tool-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.3);
}

.tool-card h3 {
    margin-top: 0;
    color: #fff;
    border-bottom: 2px solid var(--color-primary);
    padding-bottom: 0.5rem;
    margin-bottom: 1rem;
}

.tool-card p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

.calculator-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.calculator-layout #calculate-btn {
    width: 100%;
    margin-top: 1rem;
    padding: 0.85rem;
    font-weight: 700;
    background-color: var(--color-success);
}
.calculator-layout #calculate-btn:hover {
    background-color: var(--color-success-hover);
}

.calculator-layout #clear-btn {
    width: 100%;
    margin-top: 0.5rem;
    background-color: var(--color-danger);
}
.calculator-layout #clear-btn:hover {
    background-color: var(--color-danger-hover);
}

.results-table-container {
    max-height: 400px;
    overflow-y: auto;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
}
.results-table {
    width: 100%;
    border-collapse: collapse;
}

.results-table th, .results-table td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.results-table th {
    background-color: var(--color-surface-light);
    font-weight: 700;
    position: sticky;
    top: 0;
}

.results-table tr:last-child td {
    border-bottom: none;
}

.results-table .sub-header {
    font-weight: 700;
    background-color: rgba(0,0,0,0.2);
    text-align: center;
    color: var(--color-text-primary);
}

.placeholder-text {
    padding: 1rem;
    color: var(--color-text-secondary);
}

/* ==========================================================================
   8. Estilos da Página Contact Map
   ========================================================================== */

.upload-section {
    text-align: center;
    border: 2px dashed var(--color-border);
    padding: 2rem;
    border-radius: var(--border-radius);
}
.upload-section .description {
    color: var(--color-text-secondary);
    margin-top: 0;
}

.hidden {
    display: none;
}

.pdb-info-container {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    margin: 2rem 0;
    flex-wrap: wrap;
}

.info-card {
    background-color: var(--color-surface-light);
    padding: 1rem 1.5rem;
    border-radius: var(--border-radius);
    text-align: center;
    border: 1px solid var(--color-border);
}

.info-card h3 {
    margin: 0 0 0.5rem 0;
    font-size: 1rem;
    color: var(--color-text-secondary);
}

.info-card p {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-primary);
}

/* ** MUDANÇAS APLICADAS AQUI ** */
.plot-container {
    border: none; /* border: 1px solid var(--color-border); */
    border-radius: var(--border-radius);
    padding: 1rem;
    /* Força o container a ser quadrado para o JS medir corretamente */
    aspect-ratio: 1 / 1; 
    width: 100%;
    max-width: 700px;
    margin: 0 auto;
}

.info-card p.small-text {
    font-size: 1rem;
    font-weight: 400;
    word-break: break-word;
}

#progress-container {
    margin-top: 1.5rem;
    width: 100%;
}

#progress-text {
    text-align: center;
    color: var(--color-text-secondary);
    font-family: var(--font-mono);
    margin-bottom: 0.5rem;
}

.progress-bar-background {
    width: 100%;
    height: 10px;
    background-color: var(--color-surface-light);
    border-radius: 5px;
    border: 1px solid var(--color-border);
    overflow: hidden;
}

#progress-bar {
    width: 0%;
    height: 100%;
    background-color: var(--color-primary);
    border-radius: 5px;
    transition: width 0.4s ease-in-out;
}