:root {
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --accent: #0284c7;
    --accent-light: #e0f2fe;
    --accent-fit: #10b981;
    --accent-fit-light: #d1fae5;
    --danger: #ef4444;
    --border-color: #e2e8f0;
    --radius: 12px;
    --transition: all 0.25s ease;
}

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

body {
    font-family: system-ui, -apple-system, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    padding-bottom: 60px;
}

.main-header {
    background-color: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo { font-size: 24px; font-weight: 800; letter-spacing: -0.5px; }

.main-nav {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px 12px 24px;
    display: flex;
    gap: 12px;
}

/* Links de Navegação entre páginas */
.nav-link {
    text-decoration: none;
    padding: 8px 16px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    border-radius: 20px;
    transition: var(--transition);
}

.nav-link:hover { background-color: var(--bg-color); color: var(--text-primary); }
.nav-link.active { background-color: var(--accent-light); color: var(--accent); }

/* Botões de abas na mesma página */
.nav-btn {
    background: none;
    border: 1px solid var(--border-color);
    padding: 8px 16px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: 20px;
    transition: var(--transition);
}

.nav-btn:hover { background-color: var(--card-bg); color: var(--text-primary); }
.nav-btn.active { background-color: var(--accent); color: white; border-color: var(--accent); }

.content-container { max-width: 1100px; margin: 32px auto; padding: 0 24px; }
.view-header { margin-bottom: 24px; }
.view-header h2 { font-size: 28px; font-weight: 700; }
.subtitle { color: var(--text-secondary); font-size: 15px; }

.card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 24px;
    margin-bottom: 24px;
}

/* Formulários e Inputs */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-weight: 600; font-size: 14px; margin-bottom: 6px; }
.form-control {
    width: 100%; padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px; font-family: inherit;
}
.btn {
    background-color: var(--accent); color: white;
    border: none; padding: 10px 20px; border-radius: 8px;
    font-weight: 600; cursor: pointer; transition: var(--transition);
}
.btn:hover { background-color: #0369a1; }

/* Grid de Perfis */
.profiles-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; }
.tag { display: inline-block; padding: 4px 10px; background: var(--bg-color); border: 1px solid var(--border-color); border-radius: 12px; font-size: 12px; margin: 4px 4px 0 0; }
.tag.danger { color: var(--danger); background: #fef2f2; border-color: #fecaca; }

/* Timeline e Cronograma */
.timeline-card {
    background-color: var(--card-bg); border: 1px solid var(--border-color);
    border-radius: var(--radius); padding: 20px; margin-bottom: 16px;
}
.meal-type { font-size: 12px; font-weight: 700; color: var(--accent); text-transform: uppercase; }
.meal-title { font-size: 18px; font-weight: 700; margin: 4px 0 8px 0; }
.meal-instructions { font-size: 14px; color: var(--text-secondary); background-color: var(--bg-color); padding: 12px; border-radius: 8px; margin-bottom: 12px; }

.portions-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 12px;
}
.portion-box {
    background-color: #f8fafc; border: 1px solid var(--border-color);
    padding: 12px; border-radius: 8px; font-size: 13px;
}
.portion-box strong { display: block; margin-bottom: 4px; color: var(--text-primary); }

.weekly-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 20px; }

/* Estilos do Modal de Edição */
.modal-overlay {
    display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(15, 23, 42, 0.6); z-index: 999; backdrop-filter: blur(2px);
}
.modal {
    position: fixed; top: 50%; left: 50%; transform: translate(-50%, -50%);
    background: var(--card-bg); width: 90%; max-width: 500px;
    border-radius: var(--radius); padding: 24px; z-index: 1000;
    display: none; box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}
.modal.active, .modal-overlay.active { display: block; }
.modal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.modal-header h3 { font-size: 20px; }
.close-btn { background: none; border: none; font-size: 28px; cursor: pointer; color: var(--text-secondary); line-height: 1; }
.close-btn:hover { color: var(--danger); }